Vokera Unica Max 20S/30S INSTALLATION AND SERVICING INSTRUCTIONS (Cod. 20188401 - 10/21 - Ed. 1)

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UNICA MAX

High e󰀩ciency system boiler

Users Instructions

Installation & Servicing Instructions

UNICA MAX 20S NG G.C. N° 41-364-13 UNICA MAX 30S NG G.C. N° 41-364-14

UNICA MAX 20S LPG G.C. N° 41-364-15 UNICA MAX 30S LPG G.C. N° 41-364-16

THESE INSTRUCTIONS TO BE RETAINED BY USER

Vokèra is a licensed member of the Benchmark scheme which aims to improve the standards of installation and commissioning of domestic hot water systems in the UK.

1. THINGS YOU SHOULD KNOW ................................................... 2

2. GETTING STARTED ....................................................................5

3. HOW TO.... ................................................................................. 10

4. WHAT IF ..................................................................................... 10

SECTION 1 - DESIGN PRINCIPLES AND OPERATING

SEQUENCE ...................................................................................12

SECTION 2 - TECHNICAL DATA ..................................................13

SECTION 3 - CONTROL PANEL (REC10) .................................... 17

SECTION 4 - GENERAL REQUIREMENTS (UK) .........................24

SECTION 4A - GENERAL REQUIREMENTS (EIRE) ....................25

SECTION 5 - INSTALLATION ....................................................... 27

SECTION 6 - COMMISSIONING ...................................................32

SECTION 7 - SERVICING INSTRUCTIONS .................................. 42

SECTION 8 - CHECKS, ADJUSTMENTS AND FAULT FINDING ....43

SECTION 9 - LPG INSTRUCTIONS .............................................. 48

Commissioning checklist ............................................................ 49

Benchmark ...............................................................................50-53

Vokèra Warranty Terms and conditions ................................54-55

USERS INSTRUCTIONS

INTRODUCTION

Dear Customer Your Vokèra UNICA MAX boiler has been designed to meet and exceed the very latest standards in gas central heating technology,

and if cared for, will give years of reliable use and e󰀩ciency. Please therefore take some time to read these instructions carefully.

Do’s and Don’t’s

- Do ensure that the system pressure is periodically checked

- Do ensure that the boiler is not used by children or unassisted disabled people

- Do ensure that you know how to isolate the appliance in an emergency

- Do ensure that you are familiar with the appliance controls

- Do ensure that your installer has completed the appliance log book section

- Do not attempt to remove the appliance casing or gain internal access

- Do not hang clothes etc. over the appliance

- Do not forget to have the appliance serviced annually.

This booklet is an integral part of the appliance. It is therefore necessary to ensure that the booklet is handed to the person responsible for the property in which the appliance is located/installed. A replacement copy can be obtained from Vokèra customer services.

At the end of its life, the product should be not be disposed of as solid urban waste, but rather it should be handed over to a

di󰀨erentiated waste collection and/or recycling centre.

1. THINGS YOU SHOULD KNOW

1.1 GAS APPLIANCES

Gas Safety (Installation and Use) Regulation (UK).

In the interests of your safety and that of others it is a legal requirement that all gas appliances are installed and correctly maintained by a competent person and in accordance with the latest regulations.

1.2 ELECTRICAL SUPPLY

Please ensure that this appliance has been properly connected to the electrical supply by means of a double pole isolator or un-switched socket, and that the correct size of fuse (3 AMP)

has been tted.

Warning: this appliance must be earthed!

1.3 WARRANTY REGISTRATION

Please take the time to register the appliance warranty using the documentation provided, call 0800 479 0754 (UK) or 056

7755055 to obtain your warranty conrmation code (please

have your appliance warranty card to hand).

1.4 APPLIANCE COMMISSIONING CHECKLIST (UK only)

The Benchmark checklist section can be found at the rear of the appliance installation booklet. This important document must be completed during the installation/commissioning of your boiler. All GAS SAFE registered installers carry a GAS SAFE ID card, and have a registration number. These details should be recorded in the Benchmark commissioning checklist section within the installation booklet. You can check your installers details by calling GAS SAFE direct on 08004085500. Failure to install and commission the appliance in accordance with the manufacturers instructions will invalidate the warranty.

This does not a󰀨ect your statutory rights.

1.5 HOW DOES IT WORK?

Your UNICA MAX boiler supplies heated water to your radiators and hot water cylinder. The appliance is controlled via a timer or programmer and any thermostats that your installer may

have tted. The boiler will light when it receives a request from

the timer, programmer, or thermostat that your installer has tted. Your UNICA MAX boiler lights electronically and does not have a pilot light. In the unlikely event of a fault developing with your boiler, the supply of gas to the burner will be terminated automatically.

1.6 DIMENSIONS

HEIGHT WIDTH DEPTH

20S 740 mm 420 mm 275 mm 30S 740 mm 470 mm 350 mm

1.7 CLEARANCES REQUIRED

100

ABOVE 25mm* BELOW 100mm^ LEFT SIDE 2mm RIGHT SIDE 2mm** FRONT 4mm***

* 25mm above ue bend

if top ue outlet is used.

Consideration should be given to providing reasonable clearance for the insertion of a FGA probe.

** Disconnection of

adjacent components may be required in order to facilitate syphon removal.

*** Provided that a door or

removal panel enables 450mm access for maintenance.

^ Can be reduced to

5mm if a removal panel enables 100mm for maintenance.

1.8 FROST PROTECTION SYSTEM

The UNICA MAX is equipped with a built-in frost protection system, this enables the boiler to over-ride the time controls

1.9 APPLIANCE STATUS INDICATORS

Your appliance incorporates the REC10H UI (User Interface), that displays information on appliance status and condition.

– even if switched o󰀨 – and operate the burner and/or pump,

should the temperature within the appliance drop below 5 °C. Please note that the frost protection system is designed to protect the appliance only, should frost protection be required for the heating system, additional controls may be required.

NOTE: the frost protection system is reliant on the appliance having a permanent electrical supply, and being in a non-fault condition.

1.10 CONTROL PANEL (REC10H)

Depending on the type of application, some of the functions described in this manual might not be available.

The REC10H UI is a multi-functional control that enables you to view the operating status of your appliance at a glance; and is also used to adjust/set the various ‘User’ settings, including temperature set-points and it also allows the management of functions related to the solar system and the heat pump (if present). The REC10H UI also incorporates an embedded timer that - if enabled - can be used to program and control the ON/OFF times for your central heating. Please consult you installer for further advice on this function.

The REC10H UI features a backlit liquid crystal display.

Boiler control panel

Confirm

back= ret

urn to the previous screen

cancel selection

return to the main screen (press > 2 sec.)

- From the main screen they allow you to choose between the options: MENU, INFO, SET, STATE, PLANT.

g. 1

FRI 18/05/2021 12:17

PLANT

bar

1.3

°C

INFO SET

HOT WATER TEMPERATURE

STAT E

REC10H

Key area

- From the sub-menus they allow you to navigate through the different options

System Icons may appear on both the left and right of the display; and they signify the following condition/status:

This icon indicates that the OFF operating status mode has been set. Each ignition request is ignored except for the frost-protection function. The pump anti-lock and frost-protection function remain active.

This icon indicates that WINTER mode has been selected (HEATING function enabled). If a heating request from the main zone is in progress, the icon will be flashing. If there is a CH request from the additional zone, the number 1 or 2 is flashing.

Only if heat pump is present. This icon indicates that cooling is active in the SUMMER state. If a cooling request from the main zone is in progress, the icon is flashing. If a cooling request from the additional zone is in progress, number 1 is flashing.

This icon indicates that the circuit for domestic hot water production is enabled. When a domestic hot water request is in progress, the icon flashes (default value - parameter: “water tank type = 0”). If we are outside the time slots for enabling the sanitary, the icon is crossed out

When the “central heating programming timing” is enabled this icon indicates that the system heating (main zone) is in AUTOMATIC mode (the management of the heating requests follows what has been set with the timer). If the heating function is not enabled during the current time frame, the icon will be crossed out.

When the “central heating programming timing” is enabled this icon indicates that the system heating (main zone) is in MANUAL mode (the management of the heating requests does not follow what has been set with the programming timing, but it is always active).

This icon indicates that the main zone, when the “

OFF

active).

central heating programming timing

” function is not enabled, has been set to off (not

Only if heat pump is present. This icon indicates that the management of a heat pump is enabled. When the heat pump is running, then the icon is flashing.

Only if solar system is present. This icon indicates that the management of a solar system is enabled. When the solar system circulator is running, then the icon is flashing.

This icon indicates that the system is detecting the presence of a flame.

This icon indicates the presence of an anomaly or fault condition, and is always flashing.

Only with combined boiler and presence of boiler + heat pump enabled for domestic hot water. The icon appears crossed out with an “X” when the system works outside the activation times of the heat pump in the domestic hot water, while it flashes when the heat pump is in operation to load the boiler.

Only if photovoltaic enabled. When the icon is flashing, it means that the electrical productivity of the photovoltaic system is adequate (closed contact). The system exploits the available energy.

Note:

The temperature of the heating outlet sensor is shown at the centre of the main screen. The value’s meaning is indicated at the bottom of the display.

Whenever a heating request is in progress, the value displayed at the centre of the screen refers to the system’s ow sensor, with the relative

indication. The value expressed in bar refers to the system’s water pressure. The top of the screen shows the current date and time, as well as the outdoor temperature, if available.

1.11 USER FUNCTIONS

142

1 MENU

FRI 18/05/2021 12:17

DEFAULT VALUE FACTORY

SET

PLANT

bar

1.3

INFO SET

HOT WATER TEMPERATURE

STAT E

°C

MINIMUM

VALUE

MAXIMUM

VALUE

SETTINGS USER

TIME & DATE USER

DAYLIGHT SAVINGS TIME FUNCTION ACTIVE FUNCTION NOT ACTIVE FUNCTION ACTIVE USER

LANGUAGE ITALIANO / ENGLISH / ... USER

BACKLIGHT 5 min 1 min 15 min USER

TIME SCHEDULE USER

MAIN USER: only if POR = 1

ZONE 1

ZONE 2

DHW USER: only with water tank

HP DHW

ACCESS LEVEL

NOTES

USER: only if POR = 1 and zone

added

USER: only if POR = 1 and zone

added

USER: only if HP present and

enable for DHW

2 STATE

DEFAULT VALUE FACTORY

SET

STAT E

BOILER OFF OFF/SUMMER/WINTER USER

DHW

ANTILEGIO CUT OFF

MAIN ZONE

AUTO AUTO/MANUAL USER

AUTO ON/OFF (if POR=0)

ON ON/OFF (if POR=1)

HEAT PUMP

ENABLE/DISABLE NIGHT REDUCT FUNCTION NOT ACTIVE FUNCTION ACTIVE FUNCTION NOT ACTIVE USER

NIGHT MODE START TIME 20:00 00:00 23:59

NIGHT MODE STOP TIME 20:00 00:00 23:59

MINIMUM

VALUE

MAXIMUM

VALUE

3 SET

DEFAULT VALUE FACTORY

SET

HEATING

DHW

18 °C 4 °C 20 °C

COOLING

0 -5 -6

MINIMUM

VALUE

MAXIMUM

VALUE

ACCESS LEVEL

NOTES

USER

with boiler in OFF and

ANTILEGIO active

USER

only if NIGHT REDUCTION active

USER

ACCESS LEVEL

NOTES

if you work at a

ﬁ xed point

if you work with climatic curves

USER

only if HP enable

for cooling

See speciﬁ c paragraph

4 INFO

2. GETTING STARTED

FRI

PLANT

STATE

BOILER

STATE

DHW

2.1 BEFORE SWITCHING ON

fore switching the appliance on, please familiarise yourself with:

- how to isolate the appliance from the gas, water, and electricity supplies;

- how to check and top-up – if necessary – the system water pressure;

- any external thermostats and their functions;

- the appliance controls.

2.2 APPLIANCE CONTROLS (see fig. 1)

The appliance controls are concealed behind the front ap of

the appliance.

NOTE

The appliance frost protection is active in all the boiler modes. The control panel functions can be used to vary the temperature of the water that circulates around your heating system and hot water cylinder. The heating temperature range can be adjusted between 20C

- 40C (low temperature) or 40C - 80C (high temperature) this

range is congured by your installer and the default is the high

temperature range. Refer to the main appliance status table for fault indicator and boiler status.

2.3 LIGHTING THE BOILER

Ensure the gas and electrical supply to the boiler are turned on.

After completing all operations required to prepare commissioning, proceed as follows to start the boiler.

2.6 STATE

This function can be used to set these operating modes. Select STATE BOILER or DHW (in WATER TANK conguration) or MAIN ZONE or HEAT PUMP (if present).

BOILER

DHW

MAIN ZONE

HEAT PUMP

Note: MAIN ZONE is visible in this menu only if the zone is managed by a room thermostat. HEAT PUMP is only visible if a heat pump is connected to the system.

BOILER

This function can be selected in order to set the boiler’s status: Select STAT E BOILER OFF or HOT WATER

ONLY (SUMMER - only if water tank connected) or HEATING AND HOT WATER (WINTER).

Once the selection has been validated, the display returns to the

STAT E

screen.

OFF

HOT WATER ONLY

HEATING AND HOT WATER

2.4 START SCREEN

When the appliance is first connected to the electrical supply, the REC 10 may require you to set the time and date (see

2.9.1), and the appliance will enter its ‘pre-purge’ mode that

will last for several minutes. On completion of the ‘pre-purge’ phase, the appliance will enter its ‘standby’ mode unless a heating or HW request has been made. By pressing the “up” and “down” keys it is possible to move the selection of the functions in this order:

- PLANT - STATE - SET - INFO - MENU. By pressing the “ok” key you can access the settings of the selected function (except for PLANT).

The “back” key is inactive (except for PLANT). The highlighted status is that which is currently selected.

18/05/2013 12:17

bar

1.3

STAT E

OFF: if OFF is selected, the system enters the standby mode, whereby only the standby functions remain active.

SUMMER (only if water tank connected): if HOT WATER

ONLY is selected, the system produces domestic hot water.

Heating is disabled.

WINTER: if HEATING AND HOT WATER is selected, the system produces domestic hot water and activates the heating function.

DHW (ONLY IF WATER TANK CONNECTED)

By selecting this function it is possible to set the DHW status by selecting one of the following options: AUTO or MANUAL. The highlighted state is the one currently selected. To select a di󰀨erent status, highlight it using the “up” and “DOWN” keys and then press the “OK” key to validate the selection. Once the selection is validated, the display returns to the STATUS screen. Press BACK to return to the home screen without making any selection.

DHW

AUTO

MANUAL

2.5 PLANT

°C

INFO SET

HOT WATER TEMPERATURE

The PLANT menu only becomes available if additional zones

have been added and congured with this system via the

REC10 H. In order to change zones (see above), highlight PLANT if necessary pressing the “up” and “down” keys. Then, pressing the “ok” and “back” keys, it will be possible to select the other zones in this sequence (only if added and congured with the REC10 H):

- PLANT - MAIN ZONE - ZONE 1 - ZONE 2.

The TIME AND DATE, DAYLIGHT SAVINGS TIME,

Antilegio CUT OFF (only with water tank): this function can

be interrupted in advance in two di󰀨erent ways:

- set the boiler to OFF

- select S TATE DHW ANTILEGIO CUTOFF.

If the function is interrupted, it will be repeated at the same time the next day, even if weekly programming is active.

LANGUAGE and BACKLIGHT settings are are related to the appliance only. The information contained in the INFO menu is related to the appliance. No domestic hot water parameters can be set if MAIN, ZONE 1 or ZONE 2 is selected.

BOILER

DHW

MAIN ZONE

ANTILEGIO CUT OFF

MAIN ZONE

ZONE ON

MAIN

ZONE OFF

MAIN

HEAT PUMP

DISABLE NIGHT REDUCT

NIGHT MODE START TIME

HEAT PUMP

NIGHT MODE STOP TIME

HEATING

COOLING

SET

DHW

SELECTION

SET

Select STATE MAIN ZONE to set the main zone’s status, by choosing one of the following options:

- if the embedded time clock is disabled (default):

- ZONE ON: boiler responds to heating request

- ZONE OFF: boiler does not respond to any request for heating

- if the embedded time clock has been enabled:

- AUTO/MANUAL/HEAT OFF.

AUTO

MANUAL

HEAT OFF

Once the selection has been validated, the display returns to the STAT E screen.

ZONE ON: if ZONE ON is selected, the zone heating requests are met.

AUTO: if AUTO is selected, the zone heating requests will be managed based on the scheduled programme.

MANUAL: if MANUAL is selected, the zone requests will be managed based on the selection set by the user.

HEAT OFF: If HEAT OFF is selected, the zone heating requests will be ignored.

NOTE: to deactivate the zone in SUMMER or in WINTER, you must select the required season (SUMMER or WINTER in the BOILER menu) and set the zone concerned to OFF.

HEAT PUMP (if present)

By selecting HEAT PUMP it is possible to enable the NIGHT REDUCTION. This parameter is used to reduce the noise of the heat pump by limiting the maximum operating frequency of the compressor in the time band set by the parameters NIGHT MODE START TIME and NIGHT MODE STOP TIME.

NIGHT MODE START TIME (if NIGHT REDUCTION is active) This parameter is used to set the start time of the heat pump compressor frequency limitation band when the night reduction function is enabled. Range 00:00 - 23:30/Default 22:00.

NIGHT MODE STOP TIME (if NIGHT REDUCTION is active) This parameter is used to set the end time of the heat pump compressor frequency limitation band when the night reduction function is enabled. Range 00:00 - 23:30.

SET

HEATING

78,0

°C

CONFIRM CANCEL

SET

THE PARAMETER

WILL BE CHANGED

CONFIRM OR DELETE

HOT WATER

With heating only boiler connected to a domestic hot water tank, the parameter refers to the temperature of the domestic water stored in the water tank. Press the “up” and “down” keys to modify the domestic water set point delivered by the boiler and then confirm with OK. The user is then asked to confirm the setpoint setting: select CONFIRM or CANCEL and confirm. Once the selection is confirmed, the display returns to the SET screen. If the selection is cancelled or the “BACK” key is pressed you return to the previous SET screen.

HOT WATER

58,0

°C

THE PARAMETER WILL BE

CHANGED

CONFIRM

CONFIRM OR DELETE SELECTION

CANCEL

COOLING (AVAILABLE IF HEAT PUMP ENABLED FOR COOLING IS INSTALLED)

Press the “up” and “down” keys to change the cooling setpoint and then conrm. If the thermoregulation in cooling is activated, the flow temperature value is automatically chosen by the system, which rapidly adjusts the room temperature according to the variations in the external temperature. If you want to change the temperature value, increasing or decreasing it compared to that automatically calculated by the electronic board, you can change the COOLING setpoint by choosing the desired comfort level (-5 ÷ +5) within the range. Then you are asked to confirm the setpoint setting: select ENTER or BACK using “up” and “down”, validate the choice by pressing OK. Confirming the selection returns the display to the previous SET screen. Cancelling the selection or pressing the BACK button returns the display to the SET screen. NOTE: this parameter is available when in the system a heat pump enabled for room cooling is installed.

ENABLE NIGHT REDUCT

2.7 SET

With this function it is possible to congure the setpoints.

Select SET HEATING or DHW or COOLING setpoints.

HEATING

The user can change the heating setpoint by pressing the “up” and “down” keys. When an outdoor temperature sensor is installed, the outlet setpoint temperature is automatically adjusted by the system, in order to maintain the ambient temperature according to any variations in the outdoor temperature. If you want to adjust the outlet temperature, raising it or lowering it with respect to that automatically calculated by the boiler, it is possible to change the HEATING setpoint selecting the desired comfort level within the range (-5 ÷ +5). The user is then asked to confirm the setpoint setting: select CONFIRM or CANCEL and confirm.

Once the selection is confirmed, the display returns to the SET screen.If the selection is cancelled or the “back” key is pressed you return to the previous SET screen.

COOLING

20,0

°C

2.8 INFO

The INFO function can be used to display a series of data regarding the system.

ATTENTION - The displayed data is for information only and

cannot be modied.

SCREED HEATER OPERATING HOURS DELIVERY PROBE RETURN PROBE DOMESTIC HOT WATER PROBE HIGH STORAGE TANK PROBE LOW STORAGE TANK PROBE SOLAR COLLECTOR FLUE GAS PROBE OUTDOOR TEMPERATURE SENSOR EXT T FOR THERMOREG FLOW METER / DHW SETPOINT OT+ FAN DELIVERY ZONE 1 DELIVERY ZONE 2 FLUE GAS PROBE

HOURS MAIN ZONE SET-POINT ZONE 1 SET-POINT

OPERATING

ZONE 2 SET-POINT SYSTEM PRESSURE HEAT PUMP DELIVERY HEAT PUMP RETURN HEAT PUMP EXT. TEMP. TREFR LOW PRESSURE PIPE TREFR HIGH PRESSURE PIPE TREFR CONDENSER TREFR HEAT EXCHANGER HEAT PUMP OPERATING MODE HEAT PUMP FREQUENCY HEAT PUMP COMPRESSOR TIME HEAT PUMP CIRCULATOR TIME HEAT PUMP FLOW SWITCH HEAT PUMP OUTPUT HEAT PUMP SET-POINT NEXT ANTI-LEGIONELLA

The “ok” key is inactive. The “back” key allows you to return

MON

SELECT OPTION

SETTINGS

SELECT OPTION

SETTINGS

SELECT OPTION

ENTER TIME AND DATE

USE THE ARROWS TO MODIFY

12 17

09/04/2021

TIME & DATE

LANGUAGE

SELECT LANGUAGE

MIN

BACKLIGHT

SET THE INTERVAL OF TIME BEFORE AUTOMATIC

SHUT-OFF OF THE SCREEN

MON

SELECT

A DAY

START

MAIN

THURSDAY

07:30

11:30

18:00

END

08:30

13:30

22:30

ZONE SCHEDULE

MAIN

SELECT OPTION

MAIN

USE THE ARROWS TO MODIFY

MAIN

USE THE ARROWS TO MODIFY

to the initial screen. In the absence of additional zones or if the screed heater function is not operating, the relative information will not be displayed.

NOTE: Some of the information might not be available on the REC10CH depending on the access level, the status of the

machine or the system conguration.

: 30 days

05:11

OPTIMUM EFFICIENCY

: 30 days

°C

2.9 MENU

Select MENU SETTINGS or TIME SCHEDULE (available only if the timer is enabled (POR=1).

SETTINGS

Select MENU SETTINGS TIME&DATE (you can change HOURS, MINUTES, DAY, MONTH, YEAR) or DAYLIGHT SAVINGS TIME or LANGUAGE (to select the desired language) or BACKLIGHT.

TIME & DATE

DAYLIGHT SAVINGS TIME

LANGUAGE

BACKLIGHT

TIME AND DATE: press “ok” to highlight in sequence HOURS, MINUTES, DAY, MONTH, YEAR and press the “up” and “down” keys to change the desired values. Once the sequence has nished by pressing “ok”, the settings will be saved and the display will return to the initial screen. By pressing “back” at any time the system will return to the

SETTINGS cancelling the changes that were made. DAYLIGHT SAVINGS TIMES: by selecting FUNCTION

ACTIVE the device automatically manages the change of time from solar to daylight savings time and vice versa.

LANGUAGE: press the “up” and “down” keys to select the desired language. Pressing “ok” the language selection is

conrmed and the display returns to the initial screen.

Pressing “back” the system returns to the SETTINGS screen without changing the system’s language.

BACKLIGHT: the screen saver display (backlight o󰀨) is

automatically activated when the time, that has been set in parameter MENU SETTINGS BACKLIGHT, elapsed without having pressed any buttons. In the screen saver the current time is normally displayed. “ ” symbol and the number of days to STOP appear if the AUTOSTOP function is active. When there is a heat request,

the current time is replaced with the boiler ow temperature

and turns on the icon concerning the type of request in

progress. A system e󰀩ciency indicator is also displayed at the

top of the screen:

- HIGH EFFICIENCY (if the average value of the return probe > 55°C)

- OPTIMUM EFFICIENCY (if average value of the return probe < 55°C).

LANGUAGE

BACKLIGHT

ENGLISH

ITALIANO

18/11/2013 12:17

SETTINGS

TIME SCHEDULE

Select MENU TIME SCHEDULE (only if the time schedule is enabled MAIN (if POR=1) or ZONE 1 (if POR=1) or ZONE 2 (if POR=1) or HP DHW.

NOTES

- the HP DHW parameter is available if the system is fitted with a heat pump that heats the domestic hot water in the storage tank

- for the HP DHW parameter, there are two time schedules: one for winter and the other for summer. select the required season (HOT WATER ONLY or HEATING AND HOT WATER) from the STATE/BOILER menu, then program the HP DHW parameter.

WARNING: in HOT WATER ONLY, the parameter is factory

set to keep time schedule active every day of the week from 05:00 to 08:00, to prevent continuous heat pump cycle reversals if the cooling function is active. If you want to alter this setting, contact the professionally qualied personnel.

For a detailed description of the scheduled programming timer, please refer to the section

12/04/2021

“2.10 TIME SCHEDULE”

SCHEDULE

MAIN

ZONE 1

ZONE 2

HP DHW

12:17

2.10 TIME SCHEDULE

Select the desired day using the “up” and “down” keys. A table will be displayed indicating the day and the time settings that have been pre-programmed. Press “ok” to access the programming for the selected day. Pressing “back” takes you back to the initial screen without making any selection.

Once the selection has been made, the user can choose from among the following options:

ADD (you can add up to four start

& end periods) - MODIFY - DELETE - COPY.

ADD

This function serves to add a new time frame to the selected day (up to a maximum of 4).

END

START

07:30

08:30

11:30

13:30

18:00

22:30

The user can increase or decrease by 30 minutes the time and the

START

07:30

11:30

18:00

END

08:30

13:30

22:30

end

time.

THURSDAY

ADD

PERIOD

ENTER

START TIME

14:00

THURSDAY

ADD

MODIFY

DELETE

COPY

START

07:30

11:30

18:00

14:00

END

08:30

13:30

22:30

start

THURSDAY

ADD

PERIOD

ENTER

END TIME

15:00

In order to conrm that the operation has been completed

USE THE ARROWS TO MODIFY

MAIN

SELECT OPTION

USE THE ARROWS TO MODIFY

MAIN

USE THE ARROWS TO MODIFY

MAIN

USE THE ARROWS TO MODIFY

MAIN

USE THE ARROWS TO MODIFY

SELECT OPTION

USE THE ARROWS TO MODIFY

MAIN

SELECT OPTION

USE THE ARROWS TO MODIFY

MAIN

USE THE ARROWS TO MODIFY

MAIN

USE THE ARROWS TO MODIFY

FRI

PLANT

HOT WATER TEMPERATURE

successfully, the display will show the table with the new time frame ashing.

START

07:30

11:30

14:00

18:00 22:30

END

08:30

13:30

15:00

MAIN

THURSDAY

ADD

MODIFY

DELETE

COPY

MODIFY

This function serves to edit a time frame already present for the selected day.

END

START

07:30

11:30

18:00

08:30

13:30

22:30

THURSDAY

ADD

MODIFY

DELETE

COPY

Conrm or cancel the selection made. In order to conrm that the operation has been completed

successfully, the display will show the table with the selected time frame ashing just before deleting it from the table.

START

07:30

11:30

18:00

END

08:30

13:30

22:30

THURSDAY

ARE YOU SURE

TO DELETE

THE PERIOD ?

CONFIRM

CANCEL

CONFIRM OR DELETE SELECTION

COPY

This function serves to copy the same scheduled programme for other days of the week.

END

START

07:30

11:30

18:00

08:30

13:30

22:30

THURSDAY

ADD

MODIFY

DELETE

COPY

Select the desired time band.

MAIN

END

START

07:30

11:30

18:00

08:30

13:30

22:30

THURSDAY

SELECT

PERIOD TO

MODIFY

07:30

The user can increase or decrease by 30 minutes the time and the

START

07:30

08:30

11:30

13:30

18:00

22:30

end

time.

END

THURSDAY

ENTER

START TIME

11:30

START

07:30

11:30

18:00

END

08:30

13:30

22:30

start

THURSDAY

ENTER

END TIME

14:00

In order to conrm that the operation has been completed

successfully, the display will show the table with the new time frame ashing.

At this point the user can select a new time frame to be

modied, or else can press “back” to return to the previous TIME SCHEDULE screen.

END

START

07:30

11:30

18:00

08:30

14:00

22:30

THURSDAY

SELECT

PERIOD TO

MODIFY

07:30

Select the day on which to copy the hourly schedule to.

MAIN

SELECT DAYS ON WHICH YOU WANT TO COPY SCHEDULE OF THURSDAY

MON TUE WED THU

SAT SUN

CONFIRM

The day will be highlighted and others can be selected using the same

procedure

SELECT DAYS ON WHICH YOU WANT TO COPY SCHEDULE OF THURSDAY

MON TUE WED THU

CONFIRM

SAT SUN

CONFIRM

FRI

In order to conrm that the operation has been completed

successfully, the display will show the list of days to which the scheduled programme has been copied.

SCHEDULE OF THURSDAY WILL BE COPIED ON THE DAYS : TUESDAY

DELETE

This function serves to delete a time frame already present for the selected day.

Select the desired time band.

START

07:30

11:30

18:00

START

07:30

11:30

18:00

END

08:30

13:30

22:30

END 08:30

13:30

22:30

MAIN

THURSDAY

ADD

MODIFY

DELETE

COPY

THURSDAY

SELECT

PERIOD TO

DELETE

2.11 FAULTS

Should a fault occur, a screen will appear on the display indicating the relative error code and a brief alphanumeric description of the fault. Pressing the “back” button it is possible to return to the main screen, where a fault is signalled by this ashing icon .

The user can return to the fault description screen by using the “up” and “down” keys and then pressing the “ok” key. The faults description screen is automatically displayed once the display illumination time has elapsed without any button being pressed. Press the “up” and “down” keys to display the descriptions of any other faults that may be present.

18/05/2013 12:17

INFO SET

1.3

bar

STAT E

°C

For fault E041

If the pressure drops below the safety threshold of 0.3 bar the boiler displays the fault code “E041 - WATER TRANSDUCER LOAD THE SYSTEM” for a transitional time of 30 sec during

which it is possible to open the external lling tap until the

For fault E091

The boiler has an auto-diagnostic system which, based on the total number of hours in certain operating conditions, can signal the need to clean the primary heat exchanger. The intervention of the Technical Assistance Centre is necessary.

pressure is between 1 and 1.5 bar.

E041

WATER TRANSDUCER

LOAD THE SYSTEM

If the pressure drops frequently, contact the Technical Assistance Centre.

Boiler faults list

ERROR

CODE

E010 ame lockout/ACF electronic fault nal

E011 extraneous ame temporary

E020 limit thermostat nal

E030 fan fault nal

E040 water transducer - check system water pressure nal

E041 water transducer - check system water pressure temporary

E042 water transducer fault nal

E060 conguration fault temporary

E070

E077 main zone water thermostat temporary

E080

E090

E091 clean primary heat exchanger temporary

E099 reset attempts exhausted, boiler blocked denitive, not resettable

-- water pressure low - check the system temporary

-- water pressure high - check the system temporary

-- boiler board communication lost temporary

-- BUS 485 communication lost temporary

fault ow sensor/overtemperature ow sensor/

fault return line probe/return line probe overtemperature/

outlet/return line probe di󰀨erential alarm

ERROR MESSAGE

ow/return sensor di󰀨erential alarm

fault ue gases probe/

ue gases overtemperature probe

DESCRIPTION OF

ALARM TYPE

temporary/nal/

nal

temporary/nal/

nal

temporary

nal

List of combustion faults

ERROR

CODE

E021 iono alarm

E022 iono alarm

E023 iono alarm

E024 iono alarm

E067 iono alarm

E088 iono alarm

E097 iono alarm

E085 combustion fault/high CO

E094 combustion fault/high CO

E095 combustion fault/high CO

E058 mains voltage fault

E065 current modulation alarm

E086 obstruction fumes alarm

ERROR MESSAGE DESCRIPTION OF TYPE OF ALARM

These are temporary alarms that if they occur several times in an hour they become denitive;

the alarm E097 is displayed and is followed by post-purging for 45 seconds at the fan’s maximum

speed.

It is always possible to release the alarm before the end of the post-purging.

These are temporary alarms that if they occur several times in an hour they become denitive; the last error to occur is displayed and is followed by a post-purging of 2 minutes at the fan’s maximum speed. It is not possible to release the alarm before the end of the post-purging unless the boiler’s power

supply is switched o󰀨.

These are temporary faults that restrict the ignition cycle.

Temporary fault reported during the post ventilation. It is maintained a post ventilation of 5 min at maximum fan speed.

3. HOW TO...

BOILER

control

3.1 HOW TO TOP-UP THE SYSTEM PRESSURE

The system pressure must be checked periodically to ensure the correct operation of the boiler. The system pressure is shown at the top of the LCD display or can be read on the gauge located on the underside of the appliance. When the boiler is at room temperature, the system pressure should be approximately 1.0 bar. If the pressure requires ‘topping-up’ use the following instructions as a guide.

- Locate the lling valve connections (usually beneath the

boiler, see g. 1).

- Attach the lling loop to both connections.

- Open the lling valve slowly until you hear water entering the

system.

- Close the lling valve when the pressure gauge (on the boiler)

reads between 1 and 1.5 BAR.

- Remove the lling loop from the connections.

3.2 HOW TO RESET THE APPLIANCE

Reset function

In order to reset the boiler’s operation in the event of a fault, it is necessary to access the fault description screen. If the lockout is of a non-volatile type that requires a reset procedure, this will be indicated on the screen, and can be carried out by pressing the “ok” button on the REC10H.

- DHW frost-protection: the function starts if the temperature measured by the DHW sensor falls below 5°C. A heat request is generated in this phase with the ignition of the burner at minimum output, which is maintained until the outlet water temperature reaches 55° C.

The activation of the FROST-PROTECTION function is indicated by a scrolling message at the base of the REC10H display.

- pump anti-blocking: the circulating pump is energised for a 30-second period if it remains inactive for more than 24-hours.

3.4 HOW TO SHUT DOWN THE SYSTEM FOR

LONG PERIODS

If the boiler will not be in used for a prolonged period of time, the following operations must be carried out:

- switch the boiler to OFF

- isolate the appliance from the gas and electricity supplies.

In this case, the frost-protection and anti-blocking systems are deactivated. Drain both the heating and domestic water systems to avoid any risk of freezing.

OFF

WINTER

OFF

E020

LIMIT THERMOSTAT

PRESS OK RESET

At this point, if the correct operating conditions have been restored, the boiler will restart automatically. If the attempts to reset the fault do not restore the boiler’s functionality, please contact your local Customer Support Service. Up to a maximum of 3 reset attempts can be made using the REC10CH. In case of all the attempts are exhausted the definitive fault E099 occurs on the display. After these operations the machine must be disconnected from the power supply to reset the number of attempts available.

If the attempts to reset the fault do not restore the boiler’s functionality, please contact your local Customer Support Service.

E020

LIMIT THERMOSTAT

REC10 ATTEMPTS EXHAUSTED

3.3 HOW TO SHUT DOWN THE SYSTEM FOR SHORT PERIODS

If necessary the boiler status can be switched to the OFF position during short periods of absence.

OFF

WINTER

Provided that the electrical and gas supplies remain switched ON to the appliance, the following frost-protection functions will remain active in order to protect the appliance:

- heating frost-protection: this function is activated if the

temperature measured by the flow sensor drops below 5°C. A heat request is generated in this phase with the ignition of the burner at minimum output, which is maintained until the outlet water temperature reaches 35° C;

3.5 HOW TO CARE FOR THE APPLIANCE

To clean the outer casing use only a clean damp cloth. Do not use any scourers or abrasive cleaners.

Fig. 1

ow/return

pipe

valve

temporary

connection

double

check valve

control

valve

supply pipe

4. WHAT IF...

4.1 WHAT IF I SUSPECT A GAS LEAK

If you suspect a gas leak, turn o󰀨 the gas supply at the gas

meter and contact your installer or local gas supplier. If you

require further advice please contact your nearest Vokèra o󰀩ce.

4.2 WHAT IF I HAVE FREQUENTLY TO TOPUP THE SYSTEM

If the system regularly requires topping-up, it may be indicative of a leak. Please contact your installer and ask him to inspect the system.

4.3 WHAT IF THE APPLIANCE IS DUE ITS ANNUAL SERVICE

Advice for tenants only

Your landlord should arrange for servicing.

Advice for homeowners Please contact Vokèra Customer Service (0844 3910999 (UK) or 056 7755057 (ROI) if you would prefer a Vokèra service

engineer or agent to service your appliance. Alternatively your local GAS SAFE registered engineer may be able to service the appliance for you.

4.4 WHAT IF I NEED TO CALL AN ENGINEER

If you think your boiler may have developed a fault, please contact your installer or Vokèra Customer Services (0844 3910999 (UK) or 056 7755057 (ROI) have all your details to hand including full address and postcode, relevant contact numbers, and your appliance log book. It is a requirement of your warranty terms

& conditions that your Benchmark logbook has been lled out

correctly and is fully up to date.

INSTALLATION AND SERVICING INSTRUCTIONS

INTRODUCTION

All installers are asked to follow the Benchmark Scheme by adhering to the Code of Practise, details of which can be obtained from www.benchmark.org.uk.

The UNICA MAX has a ACC (Active Combustion Control)

system. This control system ensures functionality, e󰀩ciency

and low emissions under any conditions. The ACC system uses an ionisation sensor immersed in the

burner ame, whose information allows the control board to

operate the gas valve that regulates the fuel. This sophisticated control system provides the auto-regulation of the combustion, so there is no need for an initial calibration. The ACC system is able to adapt the boiler to operate with

di󰀨erent gas compositions, di󰀨erent outlet pipes lengths and di󰀨erent altitudes (within the specied design limits).

The ACC system can also perform an auto-diagnostic operation that locks out the burner before the permitted upper emission limit is exceeded. The UNICA MAX product family comprises a range of high-

e󰀩ciency combination and system boilers. These appliances

– by design – incorporate electronic ignition, circulating pump, expansion vessel, safety valve, pressure gauge and automatic by-pass. The range is produced as room sealed, category II2H3PII2HY203P appliances, suitable for internal wall mounting applications only. Each appliance is provided with a fan powered

ue outlet with an annular co-axial combustion air intake that

can be rotated – horizontally – through 360 degrees for various horizontal or vertical applications.

These appliances are designed for use with a sealed system only; consequently they are not intended for use on open vented systems.

This booklet is an integral part of the appliance. It is therefore necessary to ensure that the booklet is handed to the person responsible for the property in which the appliance is located/ installed. A replacement copy can be downloaded from the Vokèra website - www.vokera.co.uk.

The boiler complies with basic requirements of the following Directives:

- Regulation (EU) 2016/426;

- Yield directive: Article 7(2) and Annex III of directive 92/42/ EEC;

- Electromagnetic compatibility directive 2014/30/EU;

- Low-voltage directive 2014/35/EU;

- Directive 2009/125/EC Ecodesign for energy-using appliances;

- Regulation (EU) 2017/1369 Energy labeling;

- Delegated Regulation (EU) No. 811/2013;

- Delegated Regulation (EU) No. 813/2013.

At the end of its life, the product should be not be

disposed of as solid urban waste, but rather it should

be handed over to a di󰀨erentiated

recycling centre

waste collection and/or

General layout

1 Analogue pressure gauge 2 Safety valve 3 Drain valve 4 Pressure transducer 5 Pump 6 Lower auto air vent 7 De-aeration valve 8 Air lter 9 Flow sensor (NTC) 10 Limit thermostat 11 Main heat exchanger 12 Detection electrode 13 Burner 14 Ignition electrode 15 Ignition transformer 16 Fume analysis cap 17 Top ue outlet 18 Flue sensor 19 Expansion vessel 20 Clapet 21 Fan 22 Mixer 23 Return sensor 24 Siphon 25 Injector 26 Gas valve

R F G

R Heating return connection F Heating ow connection G Gas connection

Fig. 2

1. SECTION - DESIGN PRINCIPLES AND OPERATING SEQUENCE

1.1 PRINCIPLE COMPONENTS

• A fully integrated electronic control board featuring electronic temperature control, anti-cycle control, pump over-run, selfdiagnostic fault indicator, full air/gas modulation

• Stainless-steel heat exchanger

• Electronic ignition with ame supervision

• Integral high-head pump

• Fan

• Expansion vessel

• Flue sensor

• Pressure transducer

• Safety valve

1.2 MODE OF OPERATION (at rest)

When the appliance is at rest and there are no requests for heating or hot water, the following functions are active:

• frost-protection system: the frost-protection system protects the appliance against the risk of frost damage, if the main temperature falls to 5°C, the appliance will function on minimum power until the temperature on main reaches 35°C.

• anti-block function: the anti-block function enables the pump to be energised for short periods, when the appliance has been inactive for more than 24-hours.

1.3 MODE OF OPERATION (Heating)

When there is a request for heat via the REC/or any external control, the pump and fan are started, the fan speed will modulate until the correct signal voltage is received at the control PCB. At this point an ignition sequence is enabled.

Ignition is sensed by the electronic circuit to ensure ame stability

at the burner. Once successful ignition has been achieved, the electronic circuitry increases the gas rate to 75% for a period of 15 minutes. Thereafter, the boiler’s output will either be increase to maximum or modulate to suit the set requirement. When the appliance reaches the desired temperature the burner will shut down and the boiler will perform a three-minute anti-cycle (timer delay).

When the request for heat has been satised the appliance

pump and fan may continue to operate to dissipate any residual heat within the appliance.

1.4 SAFETY DEVICES

When the appliance is in use, safe operation is ensured by:

• a pressure transducer that monitors system water pressure and will de-activate the pump, fan, and burner should the system water pressure drop below the required minimum value;

• fan speed sensor to ensure safe operation of the burner;

• a high limit thermostat that over-rides the temperature control circuit to prevent or interrupt the operation of the burner;

• ame sensor that will shut down the burner when no ame signal is detected and/or when incomplete combustion or high emissions are detected;

• ue sensor that will shut down the burner if the ue threshold temperature is exceeded;

• a safety valve which releases excess pressure from the primary circuit.

NOTE: when the appliance is rst switched ON or when the electrical supply is interrupted then restored, the appliance will enter a short ‘purge’ cycle whereby the pump cycles ON & OFF for approximately 2-minutes. Only when the ‘purge’ cycle has been completed, will the appliance go through an ignition sequence.

Main heat exchanger

Return

temperature

sensor

Expansion

vessel

Pump

Drain valve

Lower

AAV

return

thermostat

Analogue

pressure

gauge

Automatic

by-pass

High limit

Safety

valve

Flow

temperature

sensor

Pressure

transducer

flow

Fig. 3

AAV

2. SECTION - TECHNICAL DATA

2.1 Central Heating UNICA MAX 20S UNICA MAX 30S

Heat input (kW) 20.00***

(***) The rated heat input with gas G20.2 (I2Y20) undergoes a reduction: Qn heating = 18.9 kW

Maximum heat output (kW) 60/80°C 19.50 31.23 Minimum heat output (kW) 60/80°C 3.46 4.69 Maximum heat output (kW) 30/50°C 21.32 34.37 Minimum heat output (kW) 30/50°C 3.85 5.06 Minimum working pressure 0.25÷0.45 bar Maximum working pressure 3.0 bar Minimum ow rate 350 l/h

2.2 Gas Pressures UNICA MAX 20S UNICA MAX 30S

Inlet pressure (G20) 20.0 mbar 20.0 mbar Heating maximum gas rate (m3/hr) 2.12 3.38 Minimum gas rate (m3/hr) 0.38 0.52 Injector size (mm) 1 x 4.3 1 x 5.2

2.3 Expansion Vessel UNICA MAX 20S UNICA MAX 30S

Capacity 9 litres 10 litres Maximum system volume 74 litres Pre-charge pressure 1 bar

2.4 Dimensions UNICA MAX 20S UNICA MAX 30S

Height (mm)

740 Width (mm) 420 470 Depth (mm) 275 350 Dry weight (kg) 32 37.5

2.5 Clearances required for maintenance UNICA MAX 20S UNICA MAX 30S

Sides 2mm* Top 100mm** from casing or 25mm above ue elbow (whichever is applicable)** Bottom 100mm^ Front 450mm^^

* It may be necessary to remove adjacent components if component removal/replacement is required ** Consideration should be given to providing reasonable clearance for the insertion of a FGA probe. ^ This can be reduced to 4mm if a removal panel enables the required 100mm ^^ When installed in a cupboard, this dimension can be reduced to 4mm provided that the required 450mm is available when the door is opened/

removed.

2.6 Connections UNICA MAX 20S UNICA MAX 30S

Flow & return 22mm Gas 15mm DHW hot & cold 15mm Safety valve 15mm Condense 21mm

2.7 Electrical UNICA MAX 20S UNICA MAX 30S

Power consumption CH (Watts) Voltage (V/Hz) Internal fuse External fuse

98 112

230/50

4 A T (for PCB) - 3.15A F (for connections block)

2.8 Flue Details (concentric 60-100) UNICA MAX 20S UNICA MAX 30S

Maximum horizontal ue length (60/100mm) Maximum vertical ue length (60/100mm)

10.0 m 6.0 m

11.0 m 7.0 m

2.9 Efficiency UNICA MAX 20S UNICA MAX 30S

SEDBUK 2005 (%)

90.1 90.2

2.10 Emissions UNICA MAX 20S UNICA MAX 30S

CO2 @ maximum output (%) (*) 9.0 9.0 CO2 @ minimum output (%) (*) 9.0 9.0 CO @ maximum output (ppm) CO @ minimum output (ppm)

130 170

10 10

NOx rating class 6 class 6 (*) CO2 tolerance = +0.6% -1%

2.11 Fan rotations UNICA MAX 20S UNICA MAX 30S

Number of fan rotations with slow ignition (rpm)

Maximum number of heating fan rotations (rpm)

Minimum number of heating fan rotations (rpm)

2.12 Gas pressure

5,500 5,500 6,200 7,300 1,600 1,700

UNICA MAX 20S UNICA MAX 30S

Nominal methane gas pressure (G20 - I2H) 20 mbar 20 mbar Nominal methane-hydrogen gas pressure (G20.2 - I2Y20) 20 mbar 20 mbar Nominal liquid gas LPG pressure (G31 - I3P) 37 mbar 37 mbar

32.00

Parameter Symbol

UNICA

MAX 20S

UNICA

MAX 30S

Unit

Seasonal space heating energy e󰀩ciency class - A A Water heating energy e󰀩ciency class - - - -

Rated heat output Pnominal 20 31 kW Seasonal space heating energy e󰀩ciency ηs 93 94 %

Useful heat output

At rated heat output and high-temperature regime (*) P4 19,5 31,2 kW At 30% of rated heat output and low-temperature regime (**) P1 6,5 10,5 kW

Useful e󰀩ciency

At rated heat output and high-temperature regime (*) η4 87,8 87,9 % At 30% of rated heat output and low-temperature regime (**) η1 98,3 98,6 %

Auxiliary electricity consumption

At full load elmax 27,0 49,0 W At part load elmin 13,0 13,0 W In Stand-by mode PSB 3,0 3,0 W

Other parameters

Stand-by heat loss P󰀬by 30,2 26,0 W Pilot ame energy consumption Pign - - W

Annual energy consumption QHE 60 96 GJ Sound power level, indoors LWA 50 54 dB Emissions of nitrogen oxides NOx 46 38 mg/kWh

For combination heaters

Declared load prole - Water heating energy e󰀩ciency ηwh - - %

Daily electricity consumption Qelec - - kWh Daily fuel consumption Qfuel - - kWh Annual electricity consumption AEC - - kWh Annual fuel consumption AFC - - GJ (*) High-temperature regime means 60 °C return temperature at heater inlet and 80 °C feed temperature at heater outlet. (**) Low temperature means for condensing boilers 30 °C, for low-temperature boilers 37 °C and for other heaters 50 °C return temperature (at heater inlet).

NOTE (if the outdoor temperature sensor or the control panel, or even both devices, are present in the boiler) With reference to the Delegated Regulation (EU) No. 811/2013, the information in the table can be used for completing the product data sheet and the labelling for room heating appliances, for mixed heating appliances, for all those appliances for enclosed space heating, for temperature control devices and solar devices:

ADDED DEVICES CLASS BONUS

OUTDOOR TEMPERATURE SENSOR II 2% CONTROL PANEL* V 3% OUTDOOR TEMPERATURE SENSOR + CONTROL PANEL* VI 4%

(*) Set as ambient regulator

2.13 Residual head of the circulator

The boiler is equipped with a high e󰀩ciency modulating circulator already connected hydraulically and electrically, the available useful performances of which are indicated in the graph. The modulation is managed by the board through the DUTY CYCLE PUMP parameter - INSTALLER access level. The circulator is factory set with a 7 meter head curve.

The boiler is equipped with an anti-blocking system that starts an operating cycle every 24 hours of rest in any operating state.

The “anti-blocking” function is active only if the boiler is electrically powered.

If there is a need to use a di󰀨erent curve, the desired level can be

selected on the circulator.

If you need to “ see par.

2.13.1 Variable speed circulator

The modulating circulator function is active only in the heating function. When switching the three-way to the sanitary, the circulator always works at maximum speed. The modulating circulator function applies only to the boiler circulator and not to the circulators of any external connected devices (e.g. booster circulator). Through the DUTY CYCLE PUMP parameter it is possible to choose between 4 management modes according to the situations and the type of system.

1 - VARIABLE SPEED CIRCULATOR WITH PROPORTIONAL

MODE (41 <= DUTY CYCLE PUMP <= 100)

In this mode the boiler card determines which ow curve to adopt

according to the instantaneous power delivered by the boiler.

2 - VARIABLE SPEED CIRCULATOR WITH CONSTANT ∆T

MODE (2 <= DUTY CYCLE PUMP <= 40)

In this mode, the installer sets the ∆T value to be maintained between ow and return (e.g .: by entering a value = 10, the circulator speed will change to obtain a system ow rate with the aim of maintaining the ∆T between the upstream and downstream of

the exchanger of 10°C).

release” the seized rotator shaft, please

6.1.1.

3 - CIRCULATOR IN MAXIMUM FIXED SPEED MODE (DUTY

CYCLE PUMP

= 1)

In this mode the circulator, when activated, always works at maximum speed. Used on systems with high pressure drop where it is necessary

to make the most of the boiler head in order to ensure su󰀩cient circulation (system ow rate at maximum speed less than 600

liters per hour).

Used in the presence of mix bottles with high ow rates in the

downstream circuit. Operationally:

- Enter the DUTY CYCLE PUMP parameter

- Set the value = 1

4 - EXCEPTIONAL USE OF A STANDARD NON-SPEED

ADJUSTABLE CIRCULATOR (DUTY CYCLE PUMP = 0)

This mode must be used in exceptional cases in which a traditional UPS circulator is to be used in the boiler.

CONFIGURATIONS RECOMMENDED BY THE MANUFACTURER

LOW

TEMPERATURE

(floor)

HIGH

TEMPERATURE

(radiators without

thermostatic valves)

HIGH

TEMPERATURE

(radiators with

thermostatic valves)

EXTERNAL SENSOR YES

(WEATHER

COMPENSATION)

ΔT constant

(5 ≤ DUTY CYCLE PUMP ≤ 7)

ΔT constant

(15 ≤

DUTY CYCLE PUMP

≤ 20)

ΔT constant

(15 ≤

DUTY CYCLE PUMP

≤ 20)

EXTERNAL SENSOR

(NO WEATHER

COMPENSATION)

PROPORTIONAL

(DUTY CYCLE PUMP = 85)

PROPORTIONAL

(DUTY CYCLE PUMP = 85)

PROPORTIONAL

(DUTY CYCLE PUMP = 60)

700

7-metre circulator

650

600

550

500

450

400

350

300

250

200

Residual head (mbar)

150

100

0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500

Flow rate (l/h)

85 (default)

100

Fig. 5

Key Location Minimum distance

A Below an opening (window, air-brick, etc.) 300 mm B Above an opening (window, air-brick, etc.) 300 mm C To the side of an opening (window, air-brick, etc.) 300 mm D Below gutter, drain-pipe, etc. 25 mm E Below eaves 25 mm F Below balcony, lowest point of carport roof, etc. 25 mm G To the side of a soil/drain-pipe, etc. 25 mm (60mm for 80/125mm) H From internal/external corner 25 mm (60mm for 80/125mm) I Above ground, roof, or balcony level 300 mm J From a surface or boundary facing the terminal 600 mm* K From a terminal facing a terminal 1200 mm L From an opening in the car-port into the building 1200 mm M Vertically from a terminal on the same wall 1500 mm N Horizontally from a terminal on the same wall 300 mm P From a structure to the side of the vertical terminal 300 mm

Q From the top of the vertical terminal to the roof ashing As determined by the xed collar

of the vertical terminal R To the side of a boundary 300 mm S To the side of an opening or window on a pitched roof 600 mm T Below an opening or window on a pitched roof 2000 mm V From a vertical terminal to an adjacent opening (window, air-brick, etc.) 2000 mm W From a vertical terminal to an adjacent vertical terminal 300 mm (only if both terminals are the same height)

*The possibility that this may be deemed as causing a nuisance, should be considered

3. SECTION - CONTROL PANEL (REC10H)

The REC10 is a fully functional UI (User Interface) that acts as a visual reference for the appliance and system status; and can also be used to view, input and adjust relevant system parameters and functions. The centre of the UI will normally display the current operating temperature (according to the mode of operation); however when the screensaver is active, the current time will be displayed. The value expressed in bar refers to the system’s water pressure. The top of the screen shows the information regarding the current date and time, as well as the outdoor temperature, if available. On the left and right sides are displayed the icons indicating the status of the system; their meaning is as follows.

Boiler control panel

Confirm

back= ret

urn to the previous screen

cancel selection

return to the main screen (press > 2 sec.)

- From the main screen they allow you to choose between the

FRI 18/05/2021 12:17

PLANT

bar

STAT E

1.3

°C

INFO SET

HOT WATER TEMPERATURE

REC10H

1 2

Key area

options: MENU, INFO, SET, STATE, PLANT.

- From the sub-menus they allow you to navigate through the different options

System Icons may appear on both the left and right of the display; and they signify the following condition/status:

This icon indicates that the main zone, when the “

OFF

active).

Only if heat pump is present. This icon indicates that the management of a heat pump is enabled. When the heat pump is running, then the icon is flashing.

Only if solar system is present. This icon indicates that the management of a solar system is enabled. When the solar system circulator is running, then the icon is flashing.

This icon indicates that the system is detecting the presence of a flame.

central heating programming timing

” function is not enabled, has been set to off (not

This icon indicates the presence of an anomaly or fault condition, and is always flashing.

Note:

The temperature of the heating outlet sensor is shown at the centre of the main screen. The value’s meaning is indicated at the bottom of the display.

Whenever a heating request is in progress, the value displayed at the centre of the screen refers to the system’s ow sensor, with the relative

indication. The value expressed in bar refers to the system’s water pressure. The top of the screen shows the current date and time, as well as the outdoor temperature, if available.

Pressing the keys from among the following options:

• PLANT: the display will indicate the temperature of the flow sensor of the boiler

• STATE/BOILER: enables access to choose the operating mode of the appliance: OFF, Winter

• STATE/MAIN ZONE (if embedded clock disabled): enables access to choose the operating mode (On or OFF) of the main heating zone

• STATE/MAIN ZONE (if embedded clock is enabled): enables access to choose operating mode of the embedded clock (AUTO, MANUAL, OFF)

• SET: to view or adjust the heating setpoint value

• INFO: to view the current values or status of the various

the heat pump is in operation to load the boiler.

Only if photovoltaic enabled. When the icon is flashing, it means that the electrical productivity of the photovoltaic system is adequate (closed contact). The system exploits the available energy.

“up” and “down”

it is possible to choose

• MENU: to access the system’s configuration menus. The configuration MENU is organised with a multi-access

level tree structure. With the “ok” key you can access the selected submenu, with the

“up” and “down”

keys it is possible to navigate through the submenus, while the “back” key takes you back to the previous level.

An access level has been fixed for each submenu: USER level, always available; TECHNICAL level, password protected. Below is a summary of the MENU tree structure of the REC10.

Some of the information might not be available on the REC10 depending on the access level, the status of the machine or the system conguration.

appliance inputs/sensors

The display of the REC10H control panel is equipped with the new “Color Bar” that rapidly informs the user about the boiler operation. The operating states and the alarms are grouped by 4 colours:

- GREEN: normal operation, the system is serving domestic hot water/heating requests or else automatic functions like, for example,

anti-legionella, antifreeze, ue cleaning, etc.. Scrolling text describes the function active in that moment

- YELLOW: presence of faults that could be resolved by the user that allow the product to operate even partially. An error triangle on the display gives access to details about the fault like, for example, “call for service”, domestic hot water probe fault, etc..

- RED: presence of lockout faults that require the intervention of the Technical Assistance Centre. An error triangle on the display gives access to details about the fault like, for example, “stop for service”, lockout, etc..

- GREY: system is ready to meet any requests or functions, no fault detected.

If several conditions are present at the same time, the signal on the main screen corresponds to the highest priority, in the following ascending order: Grey, Green, Yellow and Red.

The conguration MENU is organised with a multi-access level tree structure. An access level has been xed for each submenu: USER

level, always available; TECHNICAL (psw 18)/SERVICE (psw 53) level, password protected. Below is a summary of the MENU tree structure of the REC10H.

Some of the information might not be available on the REC10H depending on the access level, the status of the ma-

chine or the system conguration

Scan the QR CODE to access the Programming Manual for managing hybrid systems

ATTENTION

Unauthorised or inexperienced personnel, e.g. end-users,

should not attempt to access or change any of the passcode protected parameters of the appliance.

Any such changes could render the appliance inoperable,

may cause the appliance to malfunction, and could invalidate the appliance warranty.

This manual describes the operation of the boiler with the REC10CH machine interface. In case of installation of additional elements (heat pump, boiler, solar, photovoltaic system, etc.) it is necessary to refer to the instructions contained in the “Programming Manual for the management of hybrid systems”

3.1 Structure of the REC10CH MENU

DEFAULT VALUE FACTORY

SETTINGS USER

TIME & DATE USER

DAYLIGHT SAVINGS TIME FUNCTION ACTIVE FUNCTION NOT ACTIVE FUNCTION ACTIVE USER

LANGUAGE ENGLISH / ITALIANO / ... USER

BACKLIGHT 5 min 1 min 15 min USER

TIME SCHEDULE USER

MAIN USER: only if POR = 1

ZONE 1

ZONE 2

DHW

HP DHW

TECHNICAL INSTALLER

INSTALLATION INSTALLER

ZONES MANAGER INSTALLER

MODIFY ZONE MAIN MAIN / ZONE 1 / ZONE 2 INSTALLER

ACTUATION TYPE

REQUEST TYPE THERMOSTAT

BE16 ADDRESS

HYDRAULIC CONF

ZONE TYPE HIGH TEMP HIGH TEMP LOW TEMP INSTALLER

MIN CH SET

MAX CH SET

CHANGE NAME INSTALLER

PI - PROPORTIONAL

PI - INTEGRAL

VALVE RUN

CLOSING AT POWER ON

OUTLET OVER

OUTLET OVER TEST TIME

OUTLET OVER WAIT TIME

OUTLET OVER REST TIME

FREEZE PROT TEMP

FREEZE PROT OFFSET

FREEZE PROT T EXT

POR 0 (1 if REC10 in the AMBIENT) 0 1 INSTALLER

ADD ZONE INSTALLER

DELETE ZONE INSTALLER

SENSOR CALIBRATION 0.0°C - 6.0°C 6.0°C INSTALLER

SYSTEM RESET INSTALLER

PARAMETERS INSTALLER

ANTI-CYCLE FUNCTION 3 min 0 min 20 min INSTALLER

HYST ON HIGH TEMP 5°C 2°C 10°C SERVICE

HYST OFF HIGH TEMP 5°C 2°C 10°C SERVICE

HYST ON LOW TEMP 3°C 2°C 10°C SERVICE

HYST OFF LOW TEMP 3°C 2°C 10°C SERVICE

SP INCR HIGH TEMP 5°C (0°C if instantaneous boiler) 0°C 10°C SERVICE

SET

ITRF05/boiler card ITRF05/boiler card BE16 INSTALLER: only MAIN zone

-- 1 6

DIRECT ZONE DIRECT ZONE MIXING ZONE

20°C (HT)

20°C (LT)

80.5 °C (HT) 45°C (LT)

5 0 99

10 0 99

120 sec 0 sec 120 sec

140 sec 0 sec 240 sec

55°C 0°C 100°C

0 min 0 min 240 min

2 min VALVE RUN 240 min

2 min 0 min 240 min

6°C -10°C 50°C

5°C 1°C 20°C

10°C 0°C 100°C

MINIMUM

VALUE

THERMOSTAT / TEMPERAURE PROBE / REC10CH

MASTER / REC10CH SLAVE

20°C MAX CH SET INSTALLER

MIN CH SET

MAXIMUM

VALUE

80.5 °C (HT) 45°C (LT)

USER: only if POR = 1 and zone

CONFIGURATION = WATER TANK

USER: only if HP present and

INSTALLER: only zones with

SERVICE: only mixing zones with

SERVICE: only LT zones with

ACCESS LEVEL

NOTES

added

USER: only if PLANT

USE PER DHW active

INSTALLER

ACTUATION=BE16

INSTALLER

ACTUATION=BE16

SERVICE: only zones with

ACTUATION=BE16

SERVICE: only zones with

ACTUATION=BE16

SERVICE: only zones with

ACTUATION=BE16

SET

VALUE

DEFAULT VALUE FACTORY

SET

MINIMUM

VALUE

MAXIMUM

VALUE

ACCESS LEVEL

NOTES

SET

VALUE

WATER TANK

INSTALLER

REMOVE WATER TANK

INSTALLER

WATER TANK TYPE

0 0 1

INSTALLER: only if “only heating”

conﬁ guration

TANK FROST PROTECT 7°C 0°C 100°C

SERVICE: only if “only heating”

conﬁ guration with water-tank

TANK FR PROT OFFSET 5°C 1°C 20°C

SERVICE: only if “only heating”

conﬁ guration with water-tank

WATER TANK FLOW

80°C 50°C 85°C

INSTALLER: only if “only heating”

conﬁ guration with water-tank

ADD SOLAR PLANT

INSTALLER: only if solar system

is not conﬁ gured

SOLAR INSTALLER

REMOVE SOLAR PLANT INSTALLER

T MAX TANK 60°C 10° 130°C INSTALLER

DELTA T ON PUMP 8°C DELTA T OFF PUMP 30°C INSTALLER

DELTA T OFF PUMP 4°C 4°C DELTA T ON PUMP INSTALLER

INTEGRATION DELAY 0 min 0 min 180 min INSTALLER

COLLECTOR T MIN (- -) (- -)/-30°C - -°C INSTALLER

COLLECTOR T MAX 110°C COLLECTOR T PROT 180°C INSTALLER

COLLECTOR T PROT 110°C 80 °C COLLECTOR T MAX INSTALLER

COLLECTOR T AUTH 40°C COLLECTOR T LOCK 95°C INSTALLER

COLLECTOR T LOCK 35°C -20°C COLLECTOR T AUTH INSTALLER

PWM COLL PUMP 0 min 0 min 30 min INSTALLER

TANK COOLING FUNCTION NOT ACTIVE FUNCTION NOT ACTIVE FUNCTION ACTIVE INSTALLER

SOLAR PUMP MODE OFF OFF / ON / AUTO INSTALLER

ADD HEAT PUMP

INSTALLER: only if HP not

conﬁ gured

HEAT PUMP INSTALLER

ADD HEAT PUMP/REMOVE PDC

INSTALLER: only if HP and boiler

present

USE FREE CONTACTS/USE BUS

USE BUS USE BUS USE FREE CONTACT SERVICE

ENABLE/DISABLE COOLING

FUNCTION NOT ACTIVE FUNCTION ACTIVE FUNCTION NOT ACTIVE INSTALLER

USE FOR DHW/DON’T USE FOR DHW DHW FUNCTION NOT ACTIVE DHW FUNCTION ACTIVE DHW FUNCTION NOT ACTIVE INSTALLER: if BE17 present

ANTI FREEZE DELTA SET 1°C 0°C 6°C SERVICE

ENABLE/DISABLE NIGHT REDUCT FUNCTION NOT ACTIVE FUNCTION ACTIVE FUNCTION NOT ACTIVE INSTALLER

REDUCED FREQUENCY 80% 50% 100%

INSTALLER: if NIGHT

REDUCTION active

NIGHT MODE START TIME 20:00 00:00 23:59

INSTALLER: if NIGHT

REDUCTION active

NIGHT MODE STOP TIME 09:00 00:00 23:59

INSTALLER: if NIGHT

REDUCTION active

MIN OUTDOOR TEMP 5°C -5°C 20°C INSTALLER

MIN DHW OUT TEMP 5°C -5°C 20°C

INSTALLER: only if USE FOR

DHW in HP activated

MIN EMERG OUT T -10°C -20°C

10°C and in any case not

over the

MIN OUTDOOR

TEMP value

INSTALLER

BOILER INTEGR DELAY 30 min 1 min 240 min SERVICE

HP INTEGR DELAY 30 min 1 min 240 min SERVICE

BOILER WAITING 2 min 1 min 60 min SERVICE

HEAT PUMP WAITING 2 min 1 min 60 min SERVICE

INTEGRATION OFFSET 5°C 0°C 10°C SERVICE

WINTER SUMMER DELAY 0h 0h 24h SERVICE

WARNING VALIDATION 60 sec 1 sec 300 sec SERVICE

ENABLE CIRC ON/AUTO MODE AUTO ON AUTO

INSTALLER: if boiler in OFF and

AIR PURGING CYCLE not present

DHW HP SETPOINT 60°C 20°C 60°C

SERVICE: only if USE FOR DHW

in HP activated

DHW OFFSET 10°C 0°C 25°C

SERVICE: only if boiler with water

tank with probe and USE FOR

DHW in HP activated

ADD PHOTOVOLTAIC

INSTALLER

PHOTOVOLTAIC

INSTALLER

REMOVE PHOTOVOLTAIC INSTALLER

ELECTRIC CONVENIENCE 2 0 +10°C INSTALLER

BACKUP TYPE

1 0 1 INSTALLER

BOOSTER OAT THRESHOLD -7°C MIN EMERG OUT T 15°C INSTALLER

BOOSTER DELAY 30min 1 min 60 min INSTALLER

DEFAULT VALUE FACTORY

SP INCR LOW TEMP 0°C 0°C 6°C SERVICE

DECR COOLING SP 0°C 0°C 10°C SERVICE

PUMP DUTY CYCLE 85 0 100 INSTALLER

RESET CH TIMERS FUNCTION NOT ACTIVE FUNCTION NOT ACTIVE FUNCTION ACTIVE INSTALLER

SLIDING OUTLET

CH DELAY POST-DHW

CH DELAY TIME 6 sec 1 sec 255 sec

SET

DEACTIVATE FUNCTION DEACTIVATE FUNCTION ACTIVATE FUNCTION

0 0 1 SERVICE

PRESS TRANSDUCER 1 0 1 SERVICE

AUTO WATER FILL ENABLE 0 0 1

BEGIN SYSTEM FILLING 0.6 0.4 1

DO_AUX1 0 0 2

CONFIG OTBUS 1 0 1

WEATHER COMPENSATION INSTALLER

CLIMATIC CURVES MAIN MAIN / ZONE 1 / ZONE 2 INSTALLER

FIXED SET POINT

NIGHT COMP FUNCTION NOT ACTIVE FUNCTION NOT ACTIVE FUNCTION ACTIVE

CURVE SLOPE

AMBIENT INFLUENCE

OFFSET

COOLING 18°C 4°C 20°C

COOLING CURVE

BUILDING TYPE 5 min 5 min 20 min

OUTDOOR REACTIVITY 20 0 255

ENABLE/DISABLE COOLING CURVE

RANGE RATED not used INSTALLER

CALIBRATION INSTALLER

MIN see MULTIGAS TABLE INSTALLER

MAX see MULTIGAS TABLE INSTALLER

80.5 °C (HT) 45 °C (LT)

2.0 1.0 3.0

0.4 0.2 0.8

2.0 1.0 5.0

10 0 20

20°C 20°C 40°C

1 1 2

RLA see MULTIGAS TABLE INSTALLER

MAX CH see MULTIGAS TABLE INSTALLER

COMBUSTION ANALYSIS INSTALLER

ACTIVATE FUNCTION INSTALLER

DEACTIVATE FUNCTION INSTALLER

MAX SPEED MAX INSTALLER

RANGE RATED SPEED RANGE RATED INSTALLER

MIN SPEED MIN INSTALLER

CHANGE FAN SPEED CURRENT SPEED MIN MAX INSTALLER

ANTI-LEGIO

WEEKLY FUNCTION

ANTILEGIO FLOW 80°C 65°C 85°C INSTALLER

ANTILEGIO TIME 03:00 00:00 23:30 INSTALLER

ANTILEGIO TEMP 70°C 55°C WATER TANK T MAX INSTALLER

AIR PURGING CYCLE FUNCTION DISABLED FUNCTION DISABLED FUNCTION ENABLED SERVICE

FUNCTION DISABLED SERVICE

FUNCTION ENABLED SERVICE

STOP FUNCTION

EXHAUST PROBE RESET INSTALLER

ADD WATER TANK

MINIMUM

VALUE

MAXIMUM

VALUE

MIN CH SET MAX CH SET

FUNCTION NOT ACTIVE / DAILY FUNCTION / WEEKLY

FUNCTION

ACCESS LEVEL

NOTES

INSTALLER: only in “heating only”

conﬁ g. and water tank with probe

SERVICE: if CH DELAY POST-

INSTALLER: only if control boards

INSTALLER: if COOLING CURVE

DHW = 1

SERVICE: only if PRESS

TRANSDUCER = 1

SERVICE: only if AUTO WATER

FILL ENABLE = 1

with OTBus

SERVICE: only if control boards

with OTBus

INSTALLER: if EXTERNAL

PROBE NOT connected

INSTALLER: if EXTERNAL

PROBE connected

INSTALLER: if EXTERNAL

PROBE, request type TA and

zone type HT

INSTALLER: if EXTERNAL

PROBE, request type TA and

zone type LT

INSTALLER: if request type

AMBIENT PROBE or REC10CH

INSTALLER: if request type

AMBIENT PROBE or REC10CH

INSTALLER: if request type

deactivated

activated

INSTALLER: if EXTERNAL

PROBE connected

INSTALLER: if EXTERNAL

PROBE connected

INSTALLER: if HP present and

enable to COOLING

INSTALLER: only if “only heating”

conﬁ g. and water tank with probe

INSTALLER: only if AIR

PURGING CYCLE in progress

INSTALLER: only if instantaneous

and “only heating” conﬁ g.

SET

VALUE

DEFAULT VALUE FACTORY

SET

WATER TANK

REMOVE WATER TANK

WATER TANK TYPE

0 0 1

TANK FROST PROTECT 7°C 0°C 100°C

TANK FR PROT OFFSET 5°C 1°C 20°C

WATER TANK FLOW

80°C 50°C 85°C

ADD SOLAR PLANT

MINIMUM

VALUE

MAXIMUM

VALUE

ACCESS LEVEL

NOTES

INSTALLER

INSTALLER: only if “only heating”

conﬁ guration

SERVICE: only if “only heating”

conﬁ guration with water-tank

SERVICE: only if “only heating”

conﬁ guration with water-tank

INSTALLER: only if “only heating”

conﬁ guration with water-tank

INSTALLER: only if solar system

is not conﬁ gured

SOLAR INSTALLER

REMOVE SOLAR PLANT INSTALLER

T MAX TANK 60°C 10° 130°C INSTALLER

DELTA T ON PUMP 8°C DELTA T OFF PUMP 30°C INSTALLER

DELTA T OFF PUMP 4°C 4°C DELTA T ON PUMP INSTALLER

INTEGRATION DELAY 0 min 0 min 180 min INSTALLER

COLLECTOR T MIN (- -) (- -)/-30°C - -°C INSTALLER

COLLECTOR T MAX 110°C COLLECTOR T PROT 180°C INSTALLER

COLLECTOR T PROT 110°C 80 °C COLLECTOR T MAX INSTALLER

COLLECTOR T AUTH 40°C COLLECTOR T LOCK 95°C INSTALLER

COLLECTOR T LOCK 35°C -20°C COLLECTOR T AUTH INSTALLER

PWM COLL PUMP 0 min 0 min 30 min INSTALLER

TANK COOLING FUNCTION NOT ACTIVE FUNCTION NOT ACTIVE FUNCTION ACTIVE INSTALLER

SOLAR PUMP MODE OFF OFF / ON / AUTO INSTALLER

ADD HEAT PUMP

INSTALLER: only if HP not

conﬁ gured

HEAT PUMP INSTALLER

ADD HEAT PUMP/REMOVE PDC

USE FREE CONTACTS/USE BUS

ENABLE/DISABLE COOLING

USE BUS USE BUS USE FREE CONTACT SERVICE

FUNCTION NOT ACTIVE FUNCTION ACTIVE FUNCTION NOT ACTIVE INSTALLER

INSTALLER: only if HP and boiler

present

USE FOR DHW/DON’T USE FOR DHW DHW FUNCTION NOT ACTIVE DHW FUNCTION ACTIVE DHW FUNCTION NOT ACTIVE INSTALLER: if BE17 present

ANTI FREEZE DELTA SET 1°C 0°C 6°C SERVICE

ENABLE/DISABLE NIGHT REDUCT FUNCTION NOT ACTIVE FUNCTION ACTIVE FUNCTION NOT ACTIVE INSTALLER

REDUCED FREQUENCY 80% 50% 100%

NIGHT MODE START TIME 20:00 00:00 23:59

NIGHT MODE STOP TIME 09:00 00:00 23:59

INSTALLER: if NIGHT

REDUCTION active

INSTALLER: if NIGHT

REDUCTION active

INSTALLER: if NIGHT

REDUCTION active

MIN OUTDOOR TEMP 5°C -5°C 20°C INSTALLER

MIN DHW OUT TEMP 5°C -5°C 20°C

MIN EMERG OUT T -10°C -20°C

10°C and in any case not

over the

MIN OUTDOOR

TEMP value

INSTALLER: only if USE FOR

DHW in HP activated

INSTALLER

BOILER INTEGR DELAY 30 min 1 min 240 min SERVICE

HP INTEGR DELAY 30 min 1 min 240 min SERVICE

BOILER WAITING 2 min 1 min 60 min SERVICE

HEAT PUMP WAITING 2 min 1 min 60 min SERVICE

INTEGRATION OFFSET 5°C 0°C 10°C SERVICE

WINTER SUMMER DELAY 0h 0h 24h SERVICE

WARNING VALIDATION 60 sec 1 sec 300 sec SERVICE

ENABLE CIRC ON/AUTO MODE AUTO ON AUTO

DHW HP SETPOINT 60°C 20°C 60°C

DHW OFFSET 10°C 0°C 25°C

ADD PHOTOVOLTAIC

PHOTOVOLTAIC

INSTALLER: if boiler in OFF and

AIR PURGING CYCLE not present

SERVICE: only if USE FOR DHW

in HP activated

SERVICE: only if boiler with water

tank with probe and USE FOR

DHW in HP activated

INSTALLER

REMOVE PHOTOVOLTAIC INSTALLER

ELECTRIC CONVENIENCE 2 0 +10°C INSTALLER

BACKUP TYPE

1 0 1 INSTALLER

BOOSTER OAT THRESHOLD -7°C MIN EMERG OUT T 15°C INSTALLER

BOOSTER DELAY 30min 1 min 60 min INSTALLER

SET

VALUE

DEFAULT VALUE FACTORY

SET

MINIMUM

VALUE

MAXIMUM

VALUE

BOOSTER DELTA TEMP 5°C 1°C 20°C INSTALLER

OAT SENSOR TYP

0 0 3 INSTALLER

MINIMUM PUMP SPEED 19% 19% 100% INSTALLER

MAXIMUM PUMP SPEED 100% 19% 100% INSTALLER

ENABLE ERROR HISTORY SERVICE

ERROR HISTORY INSTALLER

SCREED HEATING DEACTIVATE FUNCTION DEACTIVATE FUNCTION ACTIVATE FUNCTION

DEACTIVATE FUNCTION INSTALLER

ACTIVATE FUNCTION INSTALLER

FUNCTION SETTINGS SERVICE

TFMIN 20 °C 15 °C 30 °C SERVICE

TFMAX 35 °C 30 °C 55 °C SERVICE

COMBUSTION MONITORING SERVICE

GAS TYPE NATURAL GAS NATURAL GAS / LPG INSTALLER

BOILER TYPE (*) A A / B / C / ..... SERVICE

COMBUSTION OFFSET RESTORE RESTORE RESET SERVICE

ACC AUTO CAL RESTORE RESTORE RESET SERVICE

BOILER INSTALLER

REMOVE BOILER 4 0 4 INSTALLER

HYDRAULIC CONFIG 4 0 4 INSTALLER

0 = only heating / 1 = instantaneous with ﬂ owswitch / 2 = instantaneous with ﬂ owmeter /

3 = only heating + water tank with probe / 4 = only heating + water tank with thermostat

SYSTEM INFO SERVICE

ACCESS LEVEL

NOTES

INSTALLER:

low temperature system

OFF state and

SET

VALUE

(*) BOILER TYPE: see “6.18 COMBUSTION PARAMETERS”

3.2 Access to TECHNICAL PARAMETERS

FRI 09/04/2021 12:17

AIR PURGING CYCLE IN PROGRESS

PLANT

bar

1.3

°C .3

INFO SET

STAT E

5 sec

FRI 09/04/2021 12:17

SETTINGS

SELECT OPTION

3.3 Access to SETTINGS - TECHNICAL - INFO SYSTEM menu

and

TECHNICAL

INSTALLATION

PARAMETERS

WEATHER COMPENSATION

RANGE RATED

CALIBRATION

INSTALLER

SETTINGS

TECHNICAL

and

SYSTEM INFO

SELECT OPTION

INSERT PASSWORD

and

PARAMETERS

ANTI-CYCLE FUNCTION

PUMP DUTY CYCLE

RESET CH TIMERS

DHW THERMOSTAT

INSTALLER

PARAMETERS

ANTI-CYCLE FUNCTION

PUMP DUTY CYCLE

RESET CH TIMERS

DHW THERMOSTAT

INSTALLER

TECHNICAL

INSTALLATION

PARAMETERS

WEATHER COMPENSATION

RANGE RATED

CALIBRATION

INSTALLER

ATTENTION

back to previously level

PARAMETERS

ANTI-CYCLE FUNCTION

PUMP DUTY CYCLE

RESET CH TIMERS

DHW THERMOSTAT

INSTALLER

FRI 09/04/2021 12:17

AIR PURGING CYCLE IN PROGRESS

PLANT

bar

1.3

°C .3

INFO SET

STAT E

>2 sec back to main level

Unauthorised or inexperienced personnel, e.g. end-users,

should not attempt to access or change any of the passcode protected parameters of the appliance.

Any such changes could render the appliance inoperable,

may cause the appliance to malfunction, and could invalidate the appliance warranty.

4. SECTION - GENERAL REQUIREMENTS (UK)

BS 5440 PART 1 FLUES BS 5440 PART 2 FLUES & VENTILATION BS EN 12828 DESIGN FOR WATER-BASED HEATING SYSTEMS

BS 6798 INSTALLATION OF BOILERS OF RATED INPUT NOT EXCEEDING 70kW BS 6891 LOW PRESSURE INSTALLATION PIPES

This appliance must be installed by a competent person in accordance with the Gas Safety (Installation & Use) Regulations.

4.1 RELATED DOCUMENTS

The installation of this boiler must be in accordance with the relevant requirements of the Gas Safety (Installation & Use) Regulations, the local building regulations, the current I.E.E. wiring regulations, the bylaws of the local water undertaking, the Building Standards (Scotland) Regulation, and Building Standards (Northern Ireland) Regulations. It should be in accordance also with any relevant requirements of the local authority and the relevant recommendations of the following British Standard Codes of Practice.

ATTENTION

The use of PPE (Personal Protective Equipment) such as but not limited to gloves, mask, safety glasses, etc. is strongly recommended whenever carrying out the installation, repair, or maintenance of this appliance – please pay particular attention to:

• Sharp edges that may be encountered when:- handling or lifting the appliance, removing parts, etc. during installation and maintenance

•

Airborne particles that may be released and/or disturbed when cleaning or removing components during maintenance

• Water treatment chemicals that could have been added to the system water may spill from the appliance and or components during maintenance

Please refer to an appropriate Health and Safety document such as HSE L23 (UK) or S.I. 299 (Ireland), for more detailed advice on safe working practices and procedures.

4.2 LOCATION OF APPLIANCE

The appliance may be installed in any room or internal space, although particular attention is drawn to the requirements of the current I.E.E. wiring regulations, and in Scotland, the electrical provisions of the Building Regulations, with respect to the installation of the appliance in a room or internal space containing a bath or shower. When an appliance is installed in a room or internal space containing a bath or shower, the appliance or any control pertaining to it must not be within reach of a person using the bath or shower (refer to IEE regs). The location chosen for the appliance must permit the

provision of a safe and satisfactory ue and termination.

The location must also permit an adequate air supply for combustion purposes and an adequate space for servicing and air circulation around the appliance. Where the installation of the appliance will be in an unusual location special procedures may be necessary, BS 6798 gives detailed guidance on this aspect. A compartment used to enclose the

appliance must be designed and constructed specically for

this purpose. An existing compartment/cupboard may be utilised provided that it is modied to suit. Details of essential features of compartment/cupboard design including airing cupboard installations are given in BS 6798. This appliance is not congured for external installation applications.

4.4 FLUE SYSTEM

The terminal should be located where the dispersal of combustion products is not impeded and with due regard for the damage and discoloration that may occur to building products located nearby. The terminal must not be located in a place where it is likely to cause a nuisance (see g. 5). In cold and/or humid weather, water vapour will condense on leaving the terminal; the e󰀨ect of such pluming must be considered. If installed less than 2m above a pavement or platform to which

people have access (including balconies or at roofs) the terminal

must be protected by a guard of durable material. The guard

must be tted centrally over the terminal. Refer to BS 5440

Part 1, when the terminal is 0.5 metres (or less) below plastic guttering or 1 metre (or less) below painted eaves.

4.5 AIR SUPPLY

The following notes are intended for general guidance only. This

appliance is a room-sealed, fan-ued boiler, consequently it

does not require a permanent air vent for combustion air supply. When installed in a cupboard or compartment, ventilation for cooling purposes is also not required.

4.6 WATER CIRCULATION

Detailed recommendations are given in BS EN 12828 and BS

6798. The following notes are for general guidance only.

4.6.1 PIPEWORK

It is recommended that copper tubing to BS 2871 Part 1 is used in conjunction with soldered capillary joints. Where possible pipes should have a gradient to ensure air is carried naturally to air release points and that water ows naturally to drain cocks. Except where providing useful heat, pipes should be insulated to avoid heat loss and in particular to avoid the possibility of freezing. Particular attention should be paid to pipes passing through ventilated areas such as under oors, loft space, and void areas.

4.6.2 AUTOMATIC BY-PASS

The appliance has a built-in automatic by-pass, consequently there is no requirement for an external by-pass, however the design of the system should be such that it prevents boiler ‘cycling’.

4.6.3 DRAIN COCKS

These must be located in accessible positions to facilitate draining of the appliance and all water pipes connected to the appliance. The drain cocks must be manufactured in accordance with BS 2879.

4.6.4 AIR RELEASE POINTS

These must be positioned at the highest points in the system where air is likely to be trapped. They should be used to expel trapped air and allow complete lling of the system.

4.6.5 EXPANSION VESSEL

The appliance has an integral expansion vessel to accommodate the increased volume of water when the system is heated. Refer to the specication table for more detailed information.

4.3 GAS SUPPLY

The gas meter – as supplied by the gas supplier – must be checked to ensure that it is of adequate size to deal with the maximum rated input of all the appliances that it serves. Installation pipes must be tted in accordance with BS 6891. Pipe work from the meter to the appliance must be of adequate size. Pipes of a smaller size than the appliance gas inlet connection must not be used. The installation must be tested for soundness in accordance with BS6891. If the gas supply serves more than one appliance, it must be ensured that an adequate supply is maintained to each appliance when they are in use at the same time. NOTE: It is recognised that ‘pressure loss’ through the gas cock and gas valve may result in a pressure drop of approximately 2mbar between the gas meter and gas valve inlet test point; this will not impair the performance of the appliance, provided that a dynamic pressure of 18mbar is available at the appliance inlet.

4.6.6 FILLING POINT

A method for initial lling of the system and replacing water lost

during servicing etc. directly from the mains supply, should be provided (see g. 6). This method of lling complies with the current Water Supply (Water Fittings) Regulations 1999 and Water Bylaws 2000 (Scotland).

4.6.7 LOW PRESSURE SEALED SYSTEM

An alternative method of lling the system would be from an

independent make-up vessel or tank mounted in a position at least 1 metre above the highest point in the system and at least

5 metres above the boiler (see g. 7). The cold feed from the make-up vessel or tank must be tted

with an approved non-return valve and stopcock for isolation purposes. The feed pipe should be connected to the return pipe as close to the boiler as possible.

4.6.8 FREQUENT FILLING

Frequent lling or venting of the system may be indicative

of a leak. Care should be taken during the installation of the appliance to ensure all aspects of the system are capable of withstanding pressures up to at least 3 bar.

4.7 ELECTRICAL SUPPLY

The appliance is supplied for operation on 230V @ 50Hz electrical supply; it must be protected with a 3-amp fuse (supplied). The method of connection to the mains electricity supply must allow for complete isolation from the supply. The preferred method is by using a double-pole switch with a contact separation of at least 3mm. The switch must only supply the appliance and its corresponding controls, i.e. time clock, room thermostat, etc. Alternatively an un-switched shuttered socket with a fused 3-pin plug both complying with BS 1363 is acceptable.

Warning!

This appliance must be earthed.

4.8 MOUNTING ON A COMBUSTIBLE SURFACE

The appliance can be mounted on a wall of combustible material

without any requirement to t any additional protective (re-

resistant) material.

4.9 TIMBER FRAMED BUILDINGS

If the appliance is to be tted in a timber framed building, it should be tted in accordance with the Institute of Gas Engineers

publication (IGE/UP/7) ‘Guide for Gas Installations in Timber Frame Buildings’.

ow/return

pipe

Automatic air-vent

control

valve

Make-up vessel or tank

Non-return

valve

temporary

connection

double

check valve

Stopcock

Fig. 6

control

valve

supply

pipe

5.0 metres minimum

4.10 WATER TREATMENT

Vokera recommend that water treatment be carried out in accordance with the Benchmark Guidance on water treatment in central heating systems. If water treatment products are to be used, then they must be entirely suitable for use with a stainless steel heat exchanger. Any water treatment product, must be administered in strict accordance with the manufacturer’s instructions. If the appliance is to be installed to an existing system; water

treatment and ushing of the complete heating system should

be carried out in accordance with BS 7593 and the Benchmark Guidance on water treatment in central heating systems.

4A. SECTION - GENERAL REQUIREMENTS (EIRE)

This appliance must be installed by a competent person in

accordance with and dened by, the Standard Specication

(Domestic Gas Installations) Declaration (I.S. 813).

4A.1 RELATED DOCUMENTS

The installation of this boiler must be in accordance with the relevant requirements of the local building regulations, the current ETCI National Rules for Electrical Installations, and the bylaws of the local water undertaking. It should be in accordance also with any relevant requirements of the local and/or district authority.

4A.2 LOCATION OF APPLIANCE

The appliance may be installed in any room or internal space, although particular attention is drawn to the requirements of the current ETCI National Rules for Electrical Installations, and I.S. 813, Annex K. When an appliance is installed in a room or internal space containing a bath or shower, the appliance or any control pertaining to it must not be within reach of a person using the bath or shower. The location chosen for the appliance must permit the provision

of a safe and satisfactory ue and termination. The location must

also permit an adequate air supply for combustion purposes and an adequate space for servicing and air circulation around the appliance. Where the installation of the appliance will be in an unusual location special procedures may be necessary, refer to I.S. 813 for detailed guidance on this aspect.

A compartment used to enclose the appliance must be designed and constructed specically for this purpose. An existing compartment/cupboard may be utilised provided that

it is modied to suit. This appliance is not congured for external installation.

4A.3 GAS SUPPLY

NOTE

It is recognised that ‘pressure loss’ through the gas cock and gas valve may result in a pressure drop of approximately 2mbar between the gas meter and gas valve inlet test point; this will not impair the performance of the appliance, provided that a dynamic pressure of 18mbar is available at the appliance inlet.

Heating return

Fig. 7

4A.4 FLUE SYSTEM

The terminal should be located where the dispersal of combustion products is not impeded and with due regard for the damage and discoloration that may occur to building products located nearby. The terminal must not be located in a place where it is likely to cause a nuisance (see I.S. 813). In cold and/or humid weather, water vapour will condense

on leaving the terminal; the e󰀨ect of such pluming must be

considered. If installed less than 2m above a pavement or platform to

which people have access (including balconies or at roofs)

the terminal must be protected by a guard of durable material.

The guard must be tted centrally over the terminal. Refer to

I.S. 813, when the terminal is 0.5 metres (or less) below plastic guttering or 1 metre (or less) below painted eaves.

4A.5 AIR SUPPLY

The following notes are intended for general guidance only.

This appliance is a room-sealed, fan-ued boiler, consequently it

does not require a permanent air vent for combustion air supply. When installed in a cupboard or compartment, ventilation for cooling purposes is also not required.

4A.6 WATER CIRCULATION

Specic recommendations are given in I.S. 813. The following

notes are for general guidance only.

4A.6.1 PIPEWORK

It is recommended that copper tubing be used in conjunction with soldered capillary joints.. Where possible pipes should have a gradient to ensure air

is carried naturally to air release points and that water ows

naturally to drain cocks. Except where providing useful heat, pipes should be insulated to avoid heat loss and in particular to avoid the possibility of freezing. Particular attention should be paid to pipes passing

through ventilated areas such as under oors, loft space, and

void areas.

4A.6.2 AUTOMATIC BY-PASS

The appliance has a built-in automatic by-pass, consequently there is no requirement for an external by-pass, however the design of the system should be such that it prevents boiler ‘cycling’.

4A.6.3 DRAIN COCKS

These must be located in accessible positions to facilitate draining of the appliance and all water pipes connected to the appliance.

4A.6.4 AIR RELEASE POINTS

These must be positioned at the highest points in the system where air is likely to be trapped. They should be used to expel trapped air and allow complete lling of the system.

4A.6.5 EXPANSION VESSEL

The appliance has an integral expansion vessel to accommodate the increased volume of water when the system is heated. Refer to the specication table for more detailed information.

4A.6.6 FILLING POINT

A method for initial lling of the system and replacing water lost during servicing etc. should be provided (see g. 6). You should ensure this method of lling complies with the local water

authority regulations.

4A.6.7 LOW PRESSURE SEALED SYSTEM

An alternative method of lling the system would be from an

independent make-up vessel or tank mounted in a position at least 1 metre above the highest point in the system and at

least 5 metres above the boiler (see g. 7). The cold feed from the make-up vessel or tank must be tted with an approved

non-return valve and stopcock for isolation purposes. The feed pipe should be connected to the return pipe as close to the boiler as possible.

4A.6.8 FREQUENT FILLING

Frequent lling or venting of the system may be indicative

of a leak. Care should be taken during the installation of the appliance to ensure all aspects of the system are capable of withstanding pressures up to at least 3 bar.

4A.7 ELECTRICAL SUPPLY

Warning!

This appliance must be earthed.

4A.8 MOUNTING ON A COMBUSTIBLE SURFACE

The appliance can be mounted on a wall of combustible material

without any requirement to t any additional protective (re-

resistant) material.

4A.9 TIMBER FRAMED BUILDINGS

If the appliance is to be tted in a timber framed building, it should be tted in accordance with I.S. 813 and local Building

Regulations. The Institute of Gas Engineers publication (IGE/UP/7) ‘Guide

for Gas Installations in Timber Frame Buildings’ gives specic

advice on this type of installation.

4A.10 WATER TREATMENT

treatment and ushing of the complete heating system should

be carried out in accordance with BS 7593 and the Benchmark Guidance on water treatment in central heating systems.

4A.11 DECLARATION OF CONFORMITY

A Declaration of Conformity (as dened in I.S. 813) must be

provided on completion of the installation. A copy of the declaration must be given to the responsible person and also to the gas supplier if required.

5. SECTION - INSTALLATION

NOTE: please refer to section 4, section 4.1 and use the ap-

propriate PPE when carrying out any of the actions or procedures contained within this section.

5.1 DELIVERY

Due to the weight of the appliance it may be necessary for two people to lift and attach the appliance to its wall bracket. The appliance is contained within a heavy-duty cardboard carton.

Lay the carton on the oor with the writing the correct way up.

5.2 CONTENTS

Contained within the carton is:

• the boiler

• the wall bracket

• carton template

• an accessories pack containing appliance service connections and washers

• the instruction pack containing the installation, servicing & user instructions, guarantee registration card and a 3-amp fuse.

5.3 UNPACKING

At the top of the carton pull both sides open – do not use a knife – unfold the rest of the carton from around the appliance, carefully remove all protective packaging from the appliance and lay the accessories etc. to one side. Protective gloves should be used to lift the appliance, the appliance back-frame should be used for lifting points.

5.4 PREPARATION FOR MOUNTING THE

APPLIANCE

The appliance should be mounted on a smooth, vertical, surface, which must be capable of supporting the full weight of the appliance. Care should be exercised when determining the position of the appliance with respect to hidden obstructions such as pipes, cables, etc. When the position of the appliance has been decided – using the template supplied – carefully mark the position of the wall

mounting bracket and ue-hole (if applicable).

Top ue

5.5 FITTING THE FLUE

This appliance incorporates a ‘click-t’ ue connection at the

top of the appliance.

5.5.1 CONCENTRIC HORIZONTAL FLUE

These instructions relate specically to the installation of this appliance with the Vokera 60/100mm ‘X-type’ (click-t) ue terminals and accessories. For specic instructions on installing this appliance with an alternative Vokera ue system,

e.g. 80/125mm; please refer to the instructions supplied with

the specic ue system, or download the instructions from the Vokera website. The appliance ue outlet elbow can be rotated through 360º on its vertical axis. In addition the ue may be

extended from the outlet elbow in the horizontal plane (see 2.9). A reduction must also be made to the maximum length (see table below) when additional bends are used.

Reduction for additional bends

Bend Reduction in maximum ue length for each bend

45º bend 1.0 metre 90º bend 1.0 metre

Horizontal ue terminals and accessories

Code Description Length

20122759 XF standard horizontal ue kit TBC 20122761 XT telescopic ue kit TBC 29450123 90-degree bend N/A 29450124 45-degree bends (2) N/A 29450125 500mm extension 500mm 29450126 1000mm extension 1000mm 29450127 2000mm extension 2000mm 29450128 Telescopic extension 372/519mm 522 Plume management kit 1370mm 529 100mm ue brackets (5) N/A

Using the template provided (A), mark and drill a 125mm hole

for the passage of the ue pipe. Each horizontal terminal,

incorporates an incline on the inner (60mm) pipe; this enables the terminal to be installed on a level plane. However any

extended horizontal ue runs must incorporate a 3-degree fallback from the ue terminal towards the appliance. The xing

holes for the wall-mounting bracket should now be drilled and

plugged, an appropriate type and quantity of xing should be

used to ensure that the bracket is mounted securely. Once the bracket has been secured to the wall, mount the appliance onto the bracket.

90° bend

Fig. 11

FITTING THE HORIZONTAL FLUE KIT

Carefully measure the distance from the centre of the appliance

ue outlet to the edge of the nished outside wall (dimension X). Add 65mm to dimension X to give you Dimension Y (see g. 12).

Measure dimension Y from the terminal end of the concentric

ue pipe and cut o󰀨 the excess ensuring any burrs are removed. IMPORTANT: The X-type ue terminals are supplied with

a sachet of silicone lubricant; smear a small amount of the lubricant around both inner and outer connections, at both

ends of the ue bend. NOTE: Attach the decorative white plastic trim to the ue pipe

at this point if it’s required.

ange installed

as standard

Attach the ue bend to the ue terminal ensuring that both pipes are fully inserted into the ue bend. Insert the assembled ue terminal and bend into the pre-drilled hole and o󰀨er up the ue bend to the appliance ue spigot.

NOTE: The appliance incorporates a ‘click-t’ ue connection (see g. 11). Ensure that both screws ‘C’ (g. 11) on the ‘clickt’ have been slackened o󰀨. Ensure that the bend is correctly aligned with the connector and insert the ue bend into the

connector until it clicks into position (this is when the tabs at points ‘A’ are located in the groove of the ue bend - see g.

11). Both screws (C) should now be tightened.

NOTE: If more convenient, the ue bend can be attached to the appliance before connecting it to the ue terminal.

NOTE: Ensure that the outlet of the ue terminal is correctly orientated as shown in g. 12.

NOTE

You must ensure that the entire ue system is properly supported and connected. Seal the ue assembly to the wall using

cement or a suitable alternative that will provide satisfactory

weatherproong. The exterior trim can now be tted.

bends & extensions have push-t connections, care should be

taken to ensure that the correct seal is made when assembling

the ue system. Connect the required number of ue extensions or bends (up to the maximum equivalent ue length) to the ue terminal (see g. 11-14). The ue system should have a 3º rise from the boiler to outside, to ensure any condense uid that

forms, is allowed to drain back to the appliance.

NOTE

When cutting an extension to the required length, you must ensure that the excess is cut from the plain end of the extension

(see g. 11-14). Remove any burrs, and check that all seals are located properly. You must ensure that the entire ue system is properly supported and connected. Seal the ue assembly to

the wall using cement or a suitable alternative that will provide

satisfactory weatherproong. The interior and exterior trim can now be tted.

Fig. 14

Fig. 12

Fig.13

EXTENDING THE FLUE

Connect the bend - supplied with the ue terminal - to the appliance ‘click-t’ connector.

IMPORTANT: The X-type ue terminals are supplied with

a sachet of silicone lubricant; smear a small amount of the lubricant around both inner and outer connections, at both

ends of the ue bend. NOTE: The appliance incorporates a ‘click-t’ ue connection

(see g. 11). Ensure that both screws ‘C’ (g. 11) on the ‘clickt’ have been slackened o󰀨. Ensure that the bend is correctly aligned with the connector and insert the ue bend into the

connector until it clicks into position (this is when the tabs at points ‘A’ are located in the groove of the ue bend - see g.

11). Both screws (C) should now be tightened. The additional 28

5.5.2 CONCENTRIC VERTICAL FLUE

Using g.19 as a reference, cut a 110mm diameter hole in the roof and/or ceiling to facilitate the route of the vertical ue

system. NOTE: ensure that the top of the appliance - if already in position - is covered and protected from the possibility of any

dust or debris falling or entering the appliance via the ue outlet. Fit the appropriate ashing to the roof and insert the vertical ue

terminal through the ashing from outside, ensuring that the collar of the terminal is located over the outlet of the ashing.

The xing holes for the appliance wall mounting bracket should

now be drilled and plugged. An appropriate type and quantity

of xing should be used to ensure that the bracket is mounted

securely. Once the bracket has been secured to the wall, mount the appliance onto the bracket.

If the vertical ue system requires additional extensions or bends,

connect these to the vertical terminal, ensuring the following:

- the maximum permitted ue length is not exceeded

- reductions to the maximum ue length have been made for any bends that are used on the vertical ue system

- any horizontal sections of the ue system, incorporate a

3-degree fallback to the appliance

- the entire ue system is fully supported and secured using

the appropriate brackets

- if/when an extension is cut to a shorter length, ensure that the excess length is cut from the plain end of the extension, and that any burrs or rough edges are removed

- all seals are properly located before assembling or connecting

the ue system.

IMPORTANT: The VX ue terminal is supplied with a sachet of

silicone lubricant; smear a small amount of the lubricant around both inner and outer connections, at both ends of the vertical

ue connector (supplied with the VX terminal). NOTE: The appliance incorporates a ‘click-t’ ue connection

(see g. 18). Ensure that both screws ‘C’ (g. 11) on the ‘click-t’ have been slackened o󰀨. Ensure that the connector is correctly aligned with the ‘click-t’ and insert it into the ‘click-t’ until it

clicks into position (this is when the tabs at points ‘A’ are located

in the groove of the vertical ue connector - see g. 18). Both

screws (C) should now be tightened. NOTE: If more convenient, the vertical ue connector can be

attached to the vertical ue terminal/extension before connecting

it to the appliance.

vertical

Gas

connection

ange installed

as standard

Fig.18

NOTE

Additional bends and/or extensions can be connected to the terminal connector if desired, however if additional bends are

tted, a reduction must be made to the maximum ue length

(see table below). Reduction for bends

Bend Reduction in maximum ue length for each bend

45º bend 1.0 metre 90º bend 1.0 metre

Vertical ue terminal and accessories

Code Description Length

20122763 Vokera XV Vertical Flue kit 1000mm 29450123 90-degree bend N/A 29450124 45-degree bends (2) N/A 29450125 500mm extension 500mm 29450126 1000mm extension 1000mm 29450127 2000mm extension 2000mm 29450128 Telescopic extension 372/519mm 529 100mm ue brackets (5) N/A 531 Pitched roof ashing N/A 532 Flat roof ashing N/A

5.6 CONNECTING THE GAS AND WATER (fig. 20)

The appliance is supplied with an accessory pack that includes service valves. The service valves are of the compression type. The accessory pack contains sealing washers’ etc, for use with the service valves. When connecting pipe work to the valves,

tighten the compression end rst then insert the sealing washers

before tightening the valve to the appliance.

NOTE

It will be necessary to hold the valve with one spanner whilst tightening with another.

Fig. 20

cock

C/H ow

valve

C/H return valve

5.6.1 GAS

The appliance is supplied with a 15mm service valve, connect a 15mm pipe to the inlet of the valve and tighten both nuts.

NOTE

It will be necessary to calculate the diameter of the gas supply pipe to ensure the appliance has an adequate supply of gas.

5.6.2 FLOW & RETURN

The appliance is supplied with 22mm service valves for the

ow and return connections, connect a 22mm pipe to the inlet

of each valve and tighten both nuts.

NOTE

Depending on system requirements, it may necessary to increase

the size of the ow & return pipe work after the service valve

connections.

Fig. 19

IMPORTANT

The vertical ue terminal is 1.0 metre in length and cannot be

cut; therefore it may be necessary to adjust the height of the appliance to suit or use a suitable extension.

5.6.3 SAFETY VALVE

The appliance incorporates a combined safety discharge and condensate discharge arrangement. Consequently the combined discharge pipe must have a continuous fall away from the appliance and should be suitably protected against the risk of freezing.

Alternatively it is permissible to t a tundish, e.g. Mactun, Hotun,

etc. close to or adjacent to the discharge pipe where it exits the appliance.

5.6.4 COMBINED PRV & CONDENSATE DISCHARGE PIPE

This appliance will - under normal operating conditions - produce

condensate uid that will require to be disposed of via the

dwelling’s waste water drainage system. Vokera strongly recommends that the condensate pipe is connected to the internal waste water pipework in accordance with BS6798.

BS6798 provides comprehensive instruction and advice on all

FRI

permissible condensate disposal methods; notwithstanding this, it is essential that the following is strictly adhered to:

- use only plastic drainage pipe (minimum OD of 21.5mm)

- horizontal runs must incorporate a minimum 45mm fall per metre, away from the appliance

- external pipework and/or pipework in unheated areas, must have a minimum OD of 32mm and be insulated with Class-O pipe insulation

- the route, type, and termination of the condensate disposal

method, must not permit any spillage of condensate uid,

into the dwelling in the event of a blockage or freezing of the condesate pipework

- if there is a risk of freezing, Vokera strongly reccomends that a tundish is incorporated within the discharge pipework (see

5.6.3 above).

Should it not be possible to route and terminate the condensate

pipework internally using ‘gravity discharge’; Vokera recommends that the Vokera condensate pump (code 404) be considered as an alternative solution.

Ensure that the end-user is aware of the e󰀨ect/consequences

of the condensate pipework becoming blocked or frozen.

5.7 ELECTRICAL CONNECTIONS

The boiler is supplied with a y-lead. This lead can be used for connection to the electrical supply. Connect the y-lead to a

fused plug or fused isolator in the following way:

• brown wire to LIVE supply

• blue wire to NEUTRAL supply

• green/yellow to EARTH connection.

Insert the supplied 3-AMP fuse into the fused isolator or fused

plug. Should the y-lead be unsuitable, refer to section 5.7.3

for details on how to connect the electrical supply directly to the boiler.

The electrical supply must be as specied in section 4/4A. A qualied electrician should connect the appliance to the

electrical supply. If controls - external to the appliance - are required, a competent person must undertake the design of any external electrical circuits, please refer to section 8 for detailed instructions. ANY EXTERNAL CONTROL OR WIRING MUST BE SERVED FROM THE SAME ISOLATOR AS THAT OF THE APPLIANCE. The supply cable from the isolator to the

appliance must be 3-core exible sized 0.75mm to BS 6500 or

equivalent. Wiring to the appliance must be rated for operation in contact with surfaces up to 90 ºC.

ModBus 485 Connection (CE4)

Carry out the connections as follows:

- use connector CE4 supplied as standard:

- 4

-poles ModBus connector for BUS 485 (- A B +)

CE4

OT+

CN1

orange (SE) orange (SE) pink (OT+)

pink (OT+) black (TA) black (TA)

X11

BE11

black

C NC

black

CN2

SWITCHED LIVE CONNECTION

Should it be necessary/required to control the appliance using a 230V supply from an external control or wiring centre; the switched supply (L&N) must be connected to the relay board BE11 at terminals CN1. See above diagram and also Section 7 (7.11 & 7.12).

Opentherm Control

When an OT control is connected to the appliance, the UI screen will display ‘Opentherm Connected’. The control functions of the appliance UI will be transferred to the OT control, which can then be used to set/adjust the main heating zone settings and the hot water settings.

UI Functions When OT Control is Connected

STATE function is disabled on the UI and must be set/adjusted via the OT control. The outlet HW temperature cannot be adjusted via the appliance UI, and is set/adjusted via the OT control.

INFO Menu

When an OT control is connected, the info menu will display

the HW set-point instead of the HW ow-rate.

NOTE

All/any functions of the ‘main’ zone are disabled on the appliance UI and can only be accessed/adjusted via the OT

control.

18/05/2013 12:17

PLANT

bar

1.5

Open Therm connected

STATE

°C

INFO SET

SE - OT+ connections

- Remove front cover as detailed in 5.7.1.

- Remove PCB cover (see diagram).

- Locate 4-pole terminal block (M4) connected to PCB at X11 (see diagram).

- Connect external sensor to terminals marked ‘SE’ (see diagram).

- Connect Opentherm control to terminals marked ‘OT’ (see diagram).

- Replace PCB cover and appliance front cover as detailed in

5.7.1.

5.7.1 FRONT COVER REMOVAL

Refer to g. 23.

- Locate and remove screws ‘A’ that secure the spring clips to the underside of the appliance.

- Gently unclip the spring clips ‘C’ and pull the front cover outwards and then upwards in order to disengage it from the tabs ‘B’ at the top of the appliance.

- Place the front cover in a safe area to avoid any risk of damage.

- Replace in the reverse order.

HOT WATER TEMPERATURE

REMOVAL OF SIDE PANEL/S

Remove the front cover as indicated above:

- locate and remove the 2-screws that secure the side panel to the appliance

- gently prise the side panel forward to release it from the securing tabs on the appliance rear

- replace in the reverse order.

WARNING

DO NOT remove the ‘side’ panels if/when the appliance has been installed to within the minimum clearances, i.e. 2mm.

When retting the side panels, it is essential that the LH

panel is tted to the left side and the RH panel is tted to

the right side (refer to the attached label).

The front cover and of the ‘room-sealed’ element of the appliance; any damage that results in a loss of their integrity will require the replacement of the cover.

The noise absorbing panels that are located inside the front cover and side panels also act as seals to ensure airtightness and the room-sealed integrity of the appliance. It is essential that these are correctly

positioned during the retting of the front cover

and/or side panels. Any subsequent damage or deterioration to the noise absorbing panels must be

rectied before the appliance i

side panels are an intrinsic part

s put back into service.

5.7.3 CONNECTING A 230V SUPPLY TO THE APPLIANCE PCB

WARNING Isolate the appliance from the electrical supply before

carrying out this procedure.

Remove the front cover as detailed in 5.7.1. Locate the red clip that retains the control panel in the upright position and move it to the left to release the control panel.

Lower the control panel and remove the two PCB cover retaining screws (located adjacent to the PCB’s front retaining clips). Push in the two front clips, and pull out the side clip in order to release the cover and then remove the cover - lifting from the front upwards.

The 230v electrical supply input is located at the rear right hand side of the PCB (see section 8 schematics); disconnect

and remove the factory-tted y-lead, and use the same

cable-entry point, route, and respective electrical terminals for the new 230v supply cable.

NOTE

Ensure that the Earth wire is approximately 30mm longer that the Live and Neutral wires and that each terminal screw is tight.

Carry out any relevant electrical checks as detailed in 8.5 before replacing the PCB cover; ensuring that no cables or wiring is trapped.

Ret the PCB cover screws and move the control panel back

to the upright position ensuring the red securing clip, clicks into place.

Replace the appliance front cover as detailed in 5.7.1 paying attention to the importance of ensuring the cover is providing

an e󰀨ective seal.

NOTE

It is the installer and/or electrician’s responsibility to ensure that the appliance properly earthed. Vokera Ltd. cannot be held responsible for any damages and/or injuries that result from the incorrect wiring of the appliance; or from an

ine󰀨ective/defective Earth connection.

Fig. 23

5.7.2 APPLIANCE MAIN ELECTRICAL SUPPLY INPUT

The appliance is supplied with an electrical y-lead (approx.

1.5m long) and the BE11 board has a link wire inserted across the TA terminals; these measures enable the basic function of

the appliance once the y-lead is connected to the electrical

supply. However if this is not suitable, then it is possible to

remove and replace the ‘y-lead’ with an alternative method

of connection to the electrical supply.

6. SECTION - COMMISSIONING

HOT WATER TEMPERATURE

FRI

PLANT

STATE

OFF

HOT WATER ONLY

HEATING AND HOT WATER

BOILER

FRI

PLANT

HOT WATER TEMPERATURE

USE THE ARROWS TO MODIFY

HOT WATER TEMPERATURE

FRI

OFF

HOT WATER ONLY

HEATING AND HOT WATER

BOILER

TECHNICAL

INSTALLER

NOTE: please refer to section 4, section 4.1 and use the appropriate PPE when carrying out any of the actions or procedures contained within this section.

6.1 PRELIMINARY CHECKS

Before starting up the boiler, check:

- conrm via the appliance data badge, that the appliance is

suitable/congured for the gas type and electrical supply

that has been provided to the appliance

- inspect the entire ue system and ensure that it has been installed in accordance with these instructions and the relevant standards that apply locally and/or nationally

- that the required clearances have been met in respect of the requirements for maintenance

- inspect the entire installation including the gas meter, test for tightness and purge. Refer to BS 6891 (I.S. 813 in ROI)

for specic instruction

- ensure that the rated delivery of the gas meter is adequate enough to serve this appliance and any other gas appliance connected to the same meter

- ensure that the gas supply pipework is of adequate size to provide the maximum gas rate required by this appliance.

6.1.1 FIRST IGNITION ERRORS

- Ensure that the gas supply is ON, water supply is ON, and electrical supply is ON. Ensure that the system pressure is at least 0.6 bar.

- Pump rotator shaft seized (possible alarm code E020 and no circulation within boiler/heating system); this can occur if the appliance has been stored or inactive for a prolonged period.

- To ‘release’ the seized rotator shaft:

- remove front cover as detailed in 5.7.1

- set the boiler to OFF

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MENU STATE

1.3

bar

°C

SETINFO

BOILER

MAIN ZONE

TIME & DATE

ENTER TIME AND DATE

12 17:

18 / 11 / 2013

- Note: it is possible to change the TIME and DATE, DAYLIGHT SAVINGS TIME settings, as well as LANGUAGE and the duration of the back-lighting, at any time by entering the MENU from the main screen and then selecting SETTINGS.

- The device automatically manages the change of time from solar to daylight savings time and vice versa.

Whenever the power supply to the appliance is interrupted and then restored, an automatic venting cycle is carried out lasting 6 min. To interrupt the vent cycle, carry out the procedure explained in the section

6.3.

- Set the boiler to OFF from REC10CH selecting STATE

BOILER.

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PLANT

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1.3

MENU STATE

°C

SETINFO

STATE

BOILER

MAIN ZONE

- Through the REC10CH it is possible to access, using the TECHNICAL menu, a series of parameters that can be programmed to allow you to personalise the operation of the boiler based on the type of system. There are 3 access levels: USER, INSTALLER and SERVICE (see “3.1 Structure of the REC10CH MENU”).

- Access the parameters and set the operation according to your type of system.

- follow in sequence a-b

a b

- replace the front cover as detailed in 5.7.1 ensuring correct seal.

6.2 PROGRAMMING THE BOILER

- Position the system’s main switch to the “on” position. The boiler display looks like this:

- In some cases it may be necessary to set the TIME and DATE; in this case the machine interface request you to carry out the operation with the message “SET TIME AND DATE”. Navigate with the keys to set the values.

Perform this operation with extreme caution to avoid damaging the components.

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INFO SET

1.3

bar

STAT E

°C

6.2.1 BOILER CONFIGURATION

The REC10 UI is supplied with a default conguration that

enables a standard type of external control, e.g. room thermostat & clock, programmable room thermostat, etc. to be connected to the appliance or alternatively the Vokera BeSMART OT+ control. Alternatively and if desired the embedded 7-day clock can be enabled (default is disabled) to control the ON/OFF time schedule for the central heating. In order to enable the embedded clock, it is necessary to access the ‘INSTALLATION’ parameters as dened in section 8.

NOTE

Do not enable the embedded clock if another type of timing control, e.g. time clock, programmable room thermostat, etc. is – or will be – connected to the appliance, in order to manage the heating timing schedule. The following functions can also be accessed and adjusted via the installer parameters (see section 8) if required/necessary.

NOTE

The ‘installer’ parameters should only be accessed and

adjusted by suitably qualied personnel.

- Select PARAMETERS.

INSTALLATION

PARAMETERS

TERMOREGOLAZIONE

WEATHER COMPENSATION

RANGE RATED

CALIBRATION

- Select from among the following options, confirming the selection.

ANTI-CYCLE FUNCTION

PARAMETERS

INSTALLER

RESET CH TIMERS

INSTALLER

TECHNICAL

INSTALLER

INSTALLATION

INSTALLER

RESET CH TIMERS

DHW THERMOSTAT

PRE-HEATING

- CONFIG OTBUS: this parameter is used to enable the remote control of the boiler via an OpenTherm device: 1 = FACTORY VALUE. OTBus function enabled. The

message “OPEN THERM CONNECTED” will appear on the display, when an OTBus device connected.

0 = OTBus function disabled. If this parameter is set at

0, any possible OTBus connection is instantaneously interrupted.

- ANTI-CYCLE FUNCTION: once the setpoint has been reached the burner will cycle on and off until an external control, e.g. time clock cancels the heating request. This function imposes a set time between the burner OFF/ON cycles in order to optimise efficiency. The factory setting for this parameter is 3 minutes and can be set to a value between 0 min and 20 min selecting the desired one.

ANTI-CYCLE FUNCTION

MIN

- RESET CH TIMER: this parameter allows you to reset the REDUCED HEATING MAXIMUM OUTPUT TIMING, during which the speed of the fan is limited to 75% of the maximum heating output that has been set, and the AIR PURGING CYCLE. The factory setting for this parameter is FUNCTION NOT ACTIVE, select FUNCTION ACTIVE, confirming the selection for resetting the timings.

FUNCTION NOT ACTIVE

FUNCTION ACTIVE

- SLIDING OUTLET (only if water tank connected): this parameter allows you to activate the SLIDING OUTLET function for changing the delivery setpoint used by the boiler, when in domestic hot water request mode. The factory value is FUNCTION NOT ACTIVE: modulation at a fixed delivery value of 80°C. By choosing FUNCTION ACTIVE the delivery setpoint is no longer fixed at 80°C, but can be changed and calculated automatically by the boiler on the basis of the difference between the desired domestic hot water setpoint and the temperature measured by the water tank probe. Note: we recommend activating this function for storage cylinders with a capacity greater than 100 litres, loading the cylinder would be too slow.

It might be necessary to reset the value of this parameter when replacing the adjustment board.

SLIDING OUTLET

FUNCTION NOT ACTIVE

FUNCTION ACTIVE

INSTALLER

- DO_AUX1:

through this value it is possible to configure the functions associated with the digital output used to manage the additional pump and the zone valve

. The factory setting

for this parameter is 0 and can be set within the 0 - 2 range with the following meaning:

Pin 1 and 2 of X21 Jumper not present Jumpered

DO_AUX1 = 0 additional pump

management

DO_AUX1 = 1 zone valve

management

DO_AUX1 = 2 additional pump

management

zone valve management

additional pump management

6.2.2 CONFIGURATION OF THE ZONE

It is possible to customise the management of the heating

zone by accessing the ZONES MANAGER menu.

- Access to menu TECHNICAL INSTALLATION ZONES MANAGER MODIFY ZONE.

INSTALLATION

PARAMETERS

WEATHER COMPENSATION

RANGE RATED

CALIBRATION

ZONES MANAGER

SENSOR CALIBRATION

SYSTEM RESET

MODIFY ZONE

ADD ZONE

DELETE ZONE

- Select the desired heating zone and then choose from among the options:

INSTALLATION

MAIN

- TYPE OF ACTUATION: set the parameter in question to ITRF05/AKM (default value)

- TYPE OF HEAT REQUEST: this parameter allows you to specify the type of heat request, it is possible to choose from among the following options:

THERMOSTAT (factory setting): the heat request is

generated with an ON/OFF thermostat

REC10 MASTER: the heat request is generated by the

REC10 MASTER; in this case the REC10 assumes the function of an HIU (Human Machine Interface)

- TYPE OF ZONE: this parameter allows you to specify the type of zone to be heated, it is possible to choose from among the following options:

HIGH TEMPERATURE (factory setting): LOW TEMPERATURE

- MIN SET HEAT: this parameter allows you to specify the minimum heating setpoint that is possible (range 20°C -

80.5°C, default 20°C for high temperature systems; range 20°C - 45°C, default 20°C for low temperature systems)

- MAX SET HEAT: this parameter allows you to specify the maximum heating setpoint that is possible (range 20°C

- 80.5°C, default 80.5°C for high temperature systems

- range 20°C - 45°C, default 45°C for low temperature systems)

- CHANGING NAME: this parameter allows you to attribute a specific name to the heating zone

- POR (embedded clock function): this parameter enables or disables the embedded clock.

Embedded clock disabled (default) = 0 Central heating is controlled (ON & OFF) by the room

thermostat connection (TA).

Embedded clock enabled = 1 Central heating ON/OFF times are controlled according to

the (default) heating programme, whilst room temperature is controlled via the room thermostat (TA). Ensure that the operating mode (‘STATE’ menu) is set to AUTO.

If you want to deactivate the zone in summer or winter, you must select the pre-established season (SUMMER or WIN-

TER in the boiler MENU) and set the zone in question to o󰀨

in the STATE or MODE menu.

6.2.3 ANTI-LEGIONELLA FUNCTION (only if connected a water tank with probe)

The machine has an automatic ANTI-LEGIONELLA function that, if necessary, heats the domestic water to 70°C and keeps it at that temperature for 15 minutes to prevent the proliferation of bacteria in the water tank. This function can be set to be activated every day or every week. This function is not performed if the water tank temperature has reached 70°C over the past 24 h - in case it is set to start daily - or over

the last 7 days - in case it is set to start once a week. If the

STATE

DHW

TECHNICAL

INSTALLER

STATE

ANTILEGIO

INSTALLER

FRI

HOT WATER TEMPERATURE

PLANT

MON

SELECT OPTION

MON

SELECT THE ZONE

SCHEDULE

MAIN

ZONE SCHEDULE

PARAMETERS

WEATHER COMPENSATION

RANGE RATED

TECHNICAL

INSTALLER

CALIBRATION

INSTALLATION

function is activated, it is performed every day at 3:00 a.m. if set to start every day, or on Wednesdays at 3:00 a.m. if set to start every week. The maximum duration of the anti-legionella cycle is 4 hours; if this function is interrupted because the time has been exceeded, the error message “ANTI-LEGIONELLA FUNCTION NOT COMPLETED” will appear on the display. The system will attempt to execute the function again the following day.

The function is not performed when the boiler is OFF.

In the INFO menu, the NEXT ANTILEGIO parameter indicates the number of days left until the next antilegionella cycle.

This function can be interrupted in advance in two di󰀨erent

ways:

- set the boiler to OFF

- select STATE DHW ANTILEGIO CUT OFF. If the function is interrupted, it will be repeated at the same time the next day, even if weekly programming is active.

BOILER

DHW

ANTILEGIO CUT OFF

6.2.4 EMBEDDED CLOCK HEATING SCHEDULE

When the embedded clock is enabled (POR=1 - see above), a default heating schedule is used to manage the ON/OFF timings for each day of the week (operating mode = AUTO). if necessary, the default heating schedule can be changed according to the User’s needs. Refer to for detailed instruction/guidance on how to access and change the default heating schedule.

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INFO SET

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1.3

MAIN

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°C .3

“2.10 TIME SCHEDULE” (User section)

STAT E

START

07:30

11:30

18:00

SETTINGS

TIME SCHEDULE

END

08:30

13:30

22:30

SELECT

A DAY

THURSDAY

To activate the function:

- select TECHNICAL ANTI-LEGIONELLA

- personalise the following parameters: FUNCTION NOT ACTIVE: the function will not be executed DAILY FUNCTION: the anti-legionella cycle is executed

every day at the time set in the ANTILEGIO TIME parameter

WEEKLY FUNCTION: the anti-legionella cycle is executed

every Wednesday at the time set in the ANTILEGIO TIME parameter

ANTILEGIO FLOW: allows you to set the boiler delivery

temperature to the storage tank during the execution of the anti-legionella function (default value 80°C)

ANTILEGIO TIME: allows you to set the function execution

time (default setting 03:00 AM)

ANTILEGIO TEMP: allows you to set the storage tank

retention temperature during the execution of the antilegionella function (70°C).

The water tank retention time for anti-legionella varies according to the temperature value set in the ANTILEGIO TEMP parameter, as shown in the table:

ANTILEGIO TEMPERATURE < 58°C 180 min 58°C < ANTILEGIO TEMPERATURE < 62°C 60 min 62°C < ANTILEGIO TEMPERATURE < 66°C 30 min 66°C < ANTILEGIO TEMPERATURE < 75°C 15 min ANTILEGIO TEMPERATURE > 75°C 1 min

MAIN ZONE

WEATHER COMPENSATION

RANGE RATED

CALIBRATION

COMBUSTION ANALYSIS

ANTI-LEGIONELLA

FUNCTION NOT ACTIVE

MAIN ZONE

DAILY FUNCTION

MAIN ZONE

WEEKLY FUNCTION

MAIN ZONE

ANTILEGIO FLOW

MAIN ZONE

ANTILEGIO TIME

MAIN ZONE

ANTILEGIO TEMP

MAIN ZONE

ANTILEGIO TEMPERATURE

Retention

temperature

6.2.5 SETTING THE THERMOREGULATION

Thermoregulation (weather compensation) controlled by the appliance, can only be enabled if an external sensor has been installed and connected to the M4 terminal strip. When the presence of an external sensor is detected, the appliance immediately enables the thermoregulation function and calculates a required outlet (flow) temperature that is based on the external temperature and the chosen climatic curve. The temperature measured by the outdoor temperature sensor is displayed on the initial page in the top right, alternating with the display of the time. When thermoregulation is enabled (outdoor temperature sensor present), the algorithm for automatically calculating the outlet setpoint depends on the type of heat request. In any case, the thermoregulation algorithm will not directly use the outdoor temperature, but rather a calculated outdoor temperature that takes into account the building’s insulation: in buildings that are well insulated, the outdoor temperature variations will have less impact than those that are poorly insulated by comparison. Enabling THERMOREGULATION occurs in the following way:

- select TECHNICAL WEATHER COMPENSATION

Using the REC10 it is possible to set the value of the following parameters:

BUILDING TYPE: it is indicative of the frequency with which the value of the calculated outdoor temperature for thermoregulation is updated, a low value for this setting will be used for buildings that have little insulation. Setting range: [5min - 20min] Factory setting: [5min]

REACTIVITY EXT SENSOR: it is an indication of the speed with which variations of the measured outdoor temperature affect the calculated outdoor temperature value for thermoregulation, low values indicate high speeds. Setting range: [0 - 255] Factory setting: [20]

To change the value of the previous parameters, proceed as described below:

- select TECHNICAL WEATHER COMPENSATION BUILDING TYPE rather than REACTIVITY EXT

SENSOR

- set the desired value.

Note: The value of the calculated outdoor temperature used by the thermoregulation algorithm is displayed in the INFO menu under T EXT FOR THERMOREG.

HEAT REQUEST FROM THERMOSTAT or POR

Riduzione notturna P ARALLELA

-20-15-10-505101520

STATE

HOT WATER TEMPERATURE

FRI

PLANT

(Programmable Timer)

In this case the outlet setpoint depends on the outdoor temperature for obtaining a reference ambient temperature of 20°C. There are 2 parameters that compete to calculate the output setpoint:

- slope of the compensation curve (KT)

- offset on the reference ambient temperature.

SELECTING THE COMPENSATION CURVE

The compensation curve for heating maintains a theoretical temperature of 20°C indoors, when the outdoor temperature is between +20°C and -20°C. The choice of the curve depends on the minimum outdoor temperature envisaged (and therefore on the geographical location), and on the delivery temperature envisaged (and therefore on the type of system). It is carefully calculated by the installer on the basis of the following formula:

KT = T. outlet envisaged - Tshift

20- min. design external T

Tshift = 30°C standard system 25°C floor installations

If the calculation produces an intermediate value between two curves, you are advised to choose the compensation curve nearest the value obtained. Example: if the value obtained from the calculation is 1.3, this is between curve 1 and curve 1.5. Choose the nearest curve, i.e. 1.5. The settable KT values are as follows: radiator system: 1.0-3.0 under floor heating system 0.2-0.8.

Using the REC10CH it is possible to set the selected thermoregulation curve:

- select TECHNICAL WEATHER COMPENSATION CLIMATIC CURVES

- select the heating zone and set the climatic curve.

OFFSET ON THE REFERENCE AMBIENT TEMPERATURE

In any event, the user can indirectly modify the value of the HEATING setpoint inserting an offset on the reference temperature that can vary within the range -5-+5 (offset 0 = 20°C).

NIGHT COMPENSATION

Whenever a programmable timer is connected to the ROOM THERMOSTAT input, the NIGHT COMPENSATION function can be enabled as follows: TECHNICAL menu WEATHER COMPENSATION

MAIN

In this case

, when the CONTACT is CLOSED, the heat

CLIMATIC CURVES

request is made by the flow sensor, on the basis of the outdoor temperature, to obtain a nominal ambient temperature on DAY level (20°C). The opening of the contact does not produce a switch-off, but a reduction (parallel translation) of the climatic curve on NIGHT level (16°C). Also in this case, the user can indirectly modify the value of the HEATING setpoint inserting once again an offset on the reference DAY temperature (20°C) rather than NIGHT (16°C) that can vary within the range [-5 - +5].

THERMOREGULATION CURVES

100

T HT

T LT

DELIVERY TEMPERATURE (°C)

OUTSIDE TEMPERATURE (°C)

2,02,53,0

1,5

1,0

0,8

0,6

0,4

0,2

-20

-15-10-505101520

T HT std systems heating temperature set point (jumper

pos.1 not inserted)

T LT oor systems heating temperature set point (jumper

pos.1 inserted)

WEATHER COMPENSATION CURVE

25 ° C

20 °C

15 °C

OUTSIDE TEMPERATURE (°C)

PARALLEL NIGHT-TIME REDUCTION

DAY

temperature

Curva climatica GIORNO

curve

NIGHT

Curva climatica NOTTE

temperature

curve

16 °C

OUTSIDE TEMPERATURE (°C)

-20-15-10-5051015202530

DELIVERY TEMPERATURE (°C)

20 °C

6.3 FIRST COMMISSIONING

- Carry out the procedure as detailed in “6.1 Preliminary checks”.

- Ensure that all services (gas, water, electricity) are supplied and turned ON at the appliance.

- Ensure that the appliance has been set to HEATING AND HOT WATER (WINTER - access via STATE menu).

- Ensure that any time control and/or temperature control is calling for heat.

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MENU STATE

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°C

SETINFO

BOILER

MAIN ZONE

BOILER

OFF

HOT WATER ONLY

HEATING AND HOT WATER

- When any heat request is generated and the burner is lit, the “ ” icon appears on the display. The boiler will start up and continue working until the set temperatures are reached, after which it will then go back to standby.

VENT CYCLE FUNCTION

When the appliance is switched on for the first time or whenever the electrical supply has been switched off and then restored, an automatic vent cycle is carried out lasting 6 min. When the vent cycle is in progress, all heat requests are paused except for domestic hot water ones when the boiler is not set to OFF, and a sliding message at the foot of the page appears on the main page of the REC10. In this condition the green and red LEDs are alternately displayed every 0.5 second.

orange

combustion

INSTALLER

HOT WATER TEMPERATURE

FRI

BOILER

F.S.

analysis button

SW1

The vent cycle can be interrupted by removing the cap from the control panel and pressing the combustion

analysis button SW1 or in the following way:

- select TECHNICAL AIR PURGING CYCLE STOP FUNCTION

TECHNICAL

WEATHER COMPENSATION

RANGE RATED

CALIBRATION

COMBUSTION ANALYSIS

AIR PURGING CYCLE

FUNCTION ENABLED

FUNCTION DISABLED

STOP FUNCTION

The REC10CH will briefly display a wait message after which you will automatically be taken to the main screen. The vent cycle can also be interrupted, if the boiler is not set to OFF, by a domestic hot water request.

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MENU STATE

PLANT

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1.3

6.4 ADJUSTING THE HEATING WATER TEMPERATURE WITHOUT AN OUTDOOR TEMPERATURE SENSOR

CONNECTED

When there is no outdoor temperature sensor, the boiler operates at a fixed-point, the HEATING setpoint in this case can be set selecting SET on the main screen of the REC10 and selecting the desired value within the range [40°C -

80.5°C] for high temperature systems or [20°C - 45 °C] for low

temperature systems (default is high temperature).

SET

HEATING

DHW

6.5 ADJUSTING THE HEATING WATER TEMPERATURE WITH AN OUTDOOR TEMPERATURE SENSOR CONNECTED

When an outdoor temperature sensor is installed, the outlet temperature is automatically selected by the system, which quickly adjusts the ambient temperature according to the variations in the outdoor temperature. If you want to change the temperature, raising it or lowering it with respect to that automatically calculated by the electronic board, it is possible to change the HEATING setpoint by selecting SET on the main screen of the REC10 and selecting within the range (-5 - +5) the desired comfort level (see “6.2.5 Setting the thermoregulation”). Note: when there is an outdoor temperature sensor connected it is still possible to have the boiler operate at a fixed point setting the values of MIN SP HEAT and MAX SP HEAT at the desired HEATING setpoint.

°C

INFO

SET

SUMMER (only if a water tank is connected): select STAT E

BOILER

activate the traditional function of only domestic hot water

HOT WATER ONLY (SUMMER)

. The REC10 normally displays the temperature of the domestic hot water stocked in the water tank (only in case of water tank with probe). In case of water tank with thermostat or domestic hot water request in progress, the delivery boiler temperature is displayed.

BOILER

OFF

HOT WATER ONLY

HEATING AND HOT WATER

WINTER / : select STATE

BOILER

HEATING AND HOT WATER (WINTER): the operating mode of the appliance is set to provide both heating and hot water.

NOTE: the main zone also needs to be set to ON (embedded clock disabled) or AUTO/MANUAL (embedded clock enabled) in order for the appliance to provide heating.

The UI will display the flow outlet temperature is displayed.

OFF

HOT WATER ONLY

HEATING AND HOT WATER

6.6 ADJUSTING THE DOMESTIC HOT WATER TEMPERATURE

CASE A: only heating with no external water tank connected

- adjustment not applicable

CASE B: only heating with an external water tank managed

by a thermostat - adjustment not applicable

CASE C: only heating with an external water tank managed by a probe

To set the domestic hot water temperature (bath, shower, kitchen, etc.):

SET

DHW

to choose the desired value between the

range [37,5°C ÷ 60°C].

SET

HEATING

DHW

6.7 ADDING DEVICES

- Select TECHNICAL

Then complete the conguration of the water tank referring to the specic section (section “6.15 Water tank configura-

tion”).

After adding the water tank, DHW is displayed on the “Programme” page. This function allows the domestic hot water programming timing to be carried out

ADD WATER TANK

6.8 BOILER START-UP

In order to initiate a heating request, it is essential that any time or temperature control is set to an ON period and at a higher than current ambient temperature respectively. The boiler will be in standby until the burner switches on following a heat request. The display shows “ ” to indicate the presence of

a ame.

FRI

PLANT

HOT WATER TEMPERATURE

During any heating request, the appliance will attempt to

INSTALLER

TECHNICAL

INSTALLER

SCREED HEATING

BOILER

INSTALLER

COMBUSTION ANALYSIS

F.S.

reach and maintain the selected set point, at which point it will modulate the fan speed to maintain the set outlet temperature. Should the outlet temperature begin to exceed the set point,

the burner will switch o󰀨 and the pump will continue to run.

In the unlikely event of a fault or malfunction occurring, the

appliance will enter a temporary or nal fault condition, during

which it shutdown; this is signalled via the UI by a warning triangle and a short description of the fault. For further detailed information on fault codes please refer to “6.13 Lights and faults”.

6.9 RESET FUNCTION

In the unlikely event of the appliance entering a fault condition; use the arrow buttons on the UI to navigate to the warning triangle, and press select. Then follow the instruction/advice as shown on the UI screen.

6.10 SCREED HEATING FUNCTION

For a low temperature system the boiler has a “screed heating” function that can be activated in the following way:

- set the status of the boiler to OFF

- select SCREED HEATING (Note: SCREED HEATING is not available if the boiler is not OFF) or FUNCTION NOT ACTIVE and confirm to enable /disable the function.

When the SCREED function is enabled, a scrolling message is displayed on the lower part of the UI screen SCREED HEATING FUNCTION IN PROGRESS - OUTLET TEMPERATURE, while on the electronic board the red and green LEDs flash alternately with a frequency of 1 sec ON - 1 sec OFF. The “screed heating” function lasts 168 hours (7 days) during which, in the zones configured as low temperature, a heating request is simulated with an initial zone outlet of 20°C, then increased in line with the table on the side. Accessing the INFO menu from the main page of the REC10 it is possible to display the TIME FUNC SCREED HEATING value regarding the number of hours since the start of the function. Once activated, the function takes priority, if the appliance is shut down by disconnecting the power supply, when it is restarted the function picks up from where it was interrupted. The function can be interrupted before its end by putting the appliance in a condition other than OFF or else by selecting DEACTIVATE FUNCTION from the relative menu.

Note: The temperature and increase values can be set to different values only by qualified personnel, only if strictly necessary. The manufacturer declines all responsibility if the parameters are incorrectly set.

18/05/2013 12:17

INFO SET

If the release attempts do not restart the boiler, contact

bar

1.3

°C

E010

FLAME LOCKOUT

PRESS OK RESET

STAT E

the local Technical Assistance Centre.

FUNCTION ACTIVE

RANGE RATED

CALIBRATION

COMBUSTION ANALYSIS

EXHAUST PROBE RESET

SCREED HEATING

FUNCTION NOT ACTIVE

FUNCTION ACTIVE

DAY TIME TEMPERATURE

1 0 20°C

6 22°C 12 24°C 18 26°C

2 0 28°C

12 30°C

3 0 32°C 4 0 35°C 5 0 35°C 6 0 30°C 7 0 25°C

6.11 CHECKS DURING AND AFTER THE FIRST COMMISSIONING

After start up, check that the boiler carries out the start-up procedures and subsequent shut-down correctly.

NOTE

In order to perform a combustion analysis check, you should ensure that the appliance is HOT; this can be achieved by generating a heating or hot water request for several minutes:

- checking the combustion.

OFF

HOT WATER ONLY

HEATING AND HOT WATER

6.12 COMBUSTION CHECK

To carry out the combustion analysis, proceed as follows:

- ensure that the electrical supply to the appliance is switched ON

- set the status of the boiler to OFF

- select TECHNICAL COMBUSTION ANALYSIS ACTIVATE FUNCTION and confirm

NOTE

The dynamic gas pressure can be checked by attaching a manometer to the test point located on the gas cock (please also refer to section 4.3).

- Select ACTIVATE FUNCTION.

- Note: the sweeper function can also be activated by pressing the SW1 key on the electronic board AKM (this requires removing the plug (C) from the cover of the instrument panel to access the electrical components).

Wait for the burner to ignite. The boiler will operate at maximum heating output and it will

be possible to check the combustion.

TECHNICAL

PARAMETERS

WEATHER COMPENSATION

RANGE RATED

CALIBRATION

COMBUSTION ANALYSIS

ACTIVATE FUNCTION

combustion

analysis button

SW1

STATE

FRI

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PLANT

HOT WATER TEMPERATURE

BOILER

FRI

PLANT

HOT WATER TEMPERATURE

INSTALLER

TECHNICAL

bar

1.3

°C

INFO SET

STATE

BOILER

MAIN ZONE

HOT WATER ONLY

HEATING AND HOT WATER

Installer

manual

OFF

At this point, if the correct operating conditions have been restored, the boiler will restart automatically. There are a maximum of 3 consecutive attempts at a release by the REC10, should all 3 attempts at reset fail, the appliance will require to be isolated briefly from the electrical supply in order to carry out any further reset attempts. Once the electrical supply has been restored, further attempts at reset can be carried out. In case of all the attempts are exhausted the definitive fault E099 occurs on the display.

fumes adaptor

E020

LIMIT THERMOSTAT

REC10 ATTEMPTS EXHAUSTED

- Perform the combustion check verifying that the CO2 values correspond to those indicated in section 6.

- Once completed, remove the analyser probe and close the combustion analysis test points, using the previously removed cap and screw..

Should the readings be signicantly di󰀨erent from the

values declared in the technical data table; do not attempt to carry out any adjustment of the gas valve.

Please call the Vokera technical Helpline for assistance

If the attempts to reset the boiler are unsuccessful, please contact the Vokera technical helpline.

For fault E041

If the pressure drops below the safety pressure limit of

0.3 bar the boiler displays the fault code “E041 - WATER TRANSDUCER LOAD THE SYSTEM” for a transitional time of 30 sec during which it is possible to open the external lling tap until the pressure is between 1 and 1.5 bar.

and further advice.

The gas valve is non-adjustable and must not be tampered with. Tampering with the gas valve will result in the malfunction of the appliance and possible damage to components.

When the sweeper function is in progress all the heat

E041

WATER TRANSDUCER

LOAD THE SYSTEM

requests are paused and a scrolling message appears at the foot of the main page of the REC10; green and red LEDs are o󰀨.

When the checks are completed:

- set the boiler to “SUMMER” or “WINTER” mode depending on the User’s requirements

- regulate the heat request temperature values according to the customer’s needs.

IMPORTANT

The sweeper function is active for a time limit of 15 minutes; the burner shuts down if an outlet temperature of 95° C is reached. It will ignite again when the temperature falls below 75° C.

If the pressure drops frequently, contact your installer or the Vokera customer care centre.

For fault E060

There is a conguration error; check that the appliance has been congured as a CH only boiler.

For fault E091

The boiler has an auto-diagnostic system which, based on the total number of hours in certain operating conditions, can signal the need to clean the primary exchanger (alarm code E091). Once the cleaning operation has been completed, reset to zero the total hour meter following procedure

6.13 LIGHTS AND FAULTS

In the unlikely event of appliance malfunction and/or a

system fault, the appliance will enter a nal or temporary fault

indicated below:

- select TECHNICAL EXHAUST PROBE RESET CONFIRM or CANCEL.

condition, whereby it will shut down and a warning triangle

will appear on the left side of the UI screen. Use the arrow buttons on the UI to navigate to the warning triangle, and press select. Then follow the instruction/advice as shown on the UI screen.

18/05/2013 12:17

bar

1.3

STAT E

WEATHER COMPENSATION

RANGE RATED

CALIBRATION

COMBUSTION ANALYSIS

EXHAUST PROBE RESET

THE PARAMETER WILL BE

CHANGED

CONFIRM CANCEL

CONFIRM OR DELETE SELECTION

NOTE: the meter resetting procedure should be carried out

°C

INFO SET

after each in-depth cleaning of the primary exchanger or if this latter is replaced. The total hours can be verified in the following way: INFO menu EXHAUST PROBE (see “2.8 INFO” - User section).

The faults description screen is automatically displayed once the display illumination time has elapsed without any button being pressed. Press the “up” and “down” keys to display the descriptions of any other faults that may be present.

Reset function

In order to reset the boiler’s operation in the event of a fault, it is necessary to access the fault description screen. If the lockout is of a non-volatile type that requires a reset procedure, this will be indicated on the screen, and can be performed by pressing the “ok” button on the REC10.

Boiler faults list

TO SEE OTHER ANOMALIES

TECHNICAL

INSTALLER

ERROR

CODE

ERROR MESSAGE

DESCRIPTION OF

ALARM TYPE

E010 ame lockout/ACF electronic fault nal

E011 extraneous ame temporary

E020 limit thermostat nal

E030 fan fault nal

E040 water transducer - check system water pressure nal

E041 water transducer - check system water pressure temporary

E042 water transducer fault nal

E060 conguration fault temporary

E070

fault ow sensor/overtemperature ow sensor/

ow/return sensor di󰀨erential alarm

temporary/nal/

nal

E077 main zone water thermostat temporary

E080

E090

fault return line probe/return line probe overtemperature/

outlet/return line probe di󰀨erential alarm

fault ue gases probe/

ue gases overtemperature probe

temporary/nal/

nal

temporary

nal

E091 clean primary heat exchanger temporary

E099 reset attempts exhausted, boiler blocked denitive, not resettable

-- water pressure low - check the system temporary

-- water pressure high - check the system temporary

-- boiler board communication lost temporary

-- BUS 485 communication lost temporary

List of combustion faults

ERROR

CODE

ERROR MESSAGE DESCRIPTION OF TYPE OF ALARM

E021 iono alarm

E022 iono alarm

E023 iono alarm

E024 iono alarm

E067 iono alarm

E088 iono alarm

These are temporary alarms that if they occur several times in an hour they become denitive;

the alarm E097 is displayed and is followed by post-purging for 45 seconds at the fan’s maximum

speed.

It is always possible to release the alarm before the end of the post-purging.

E097 iono alarm

E085 combustion fault/high CO

E094 combustion fault/high CO

E095 combustion fault/high CO

E058 mains voltage fault

E065 current modulation alarm

E086 obstruction fumes alarm

supply is switched o󰀨.

These are temporary faults that restrict the ignition cycle.

Temporary fault reported during the post ventilation. It is maintained a post ventilation of 5 min at maximum fan speed.

6.14 ALARM HISTORY

The ALARM HISTORY function is automatically enabled only after the machine has been powered up for at least 2 consecutive hours, during this period of time any alarms that arise will not be saved in the “alarm history”.

The alarms can be displayed in chronological order, from the most recent to the oldest, up to a maximum of 50 alarms; to display the alarm history:

- select TECHNICAL ERROR HISTORY

RANGE RATED

CALIBRATION

COMBUSTION ANALYSIS

EXHAUST PROBE RESET

ERROR HISTORY

1 - 10:30 18/11/2013

E030

FAN ANOMALY

USE ARROW KEYS

It is possible to return to the start page at any time by keeping the “back” key pressed for at least 2 seconds.

Note: once enabled, the ALARM HISTORY function can no longer be disabled; there is no procedure for resetting the alarm history.

If an alarm repeats consecutively, it is saved only once.

- for each alarms a sequential number is displayed, an error code and the date and time the alarm occurred.

6.15 WATER TANK CONFIGURATION

INSTALLER

WATER TANK

INSTALLER

BOILER

OFF

WINTER

SERVICE

TECHNICAL

COMBUSTION MONITORING

SERVICE

The boiler leaves the factory pre-configured for managing a water tank with a thermostat (water tank type parameter = 0

To modify the configuration of the water tank:

- select TECHNICAL WATER TANK

- choose from the following options:

WATER TANK TYPE: this parameter allows you to set the type of the water tank. Set the value to 1 to select a water tank with probe, set the value to 0 to select a water tank with thermostat (factory setting).

REMOVE

operation of the water tank; water tank disabled, the relative configuration menu is no longer accessible. If you wish to add a storage cylinder again, after a previous removal, follow the instructions in paragraph section 4.7.

WATER TANK FLOW: the parameter allows you to set the delivery temperature of the boiler to the water tank when the SLIDING OUTLET function is not active. The factory setting is 80°C.

TECHNICAL

CALIBRATION

COMBUSTION ANALYSIS

EXHAUST PROBE RESET

WATER TANK

REMOVE WATER TANK

WATER TANK TYPE

WATER TANK FLOW

WATER TANK: this function is used to disable the

PARAMETERS

AIR PURGING CYCLE

EXHAUST PROBE RESET

ERROR HISTORY

COMBUSTION MONITORING

- Select GAS TYPE

- Set this parameter depending on the type of gas of the boiler: NG = NATURAL GAS - LPG = LPG

GAS TYPE

BOILER TYPE

COMBUSTION OFFSET

- Select BOILER TYPE and set as shown in the table

BOILER TYPE

...

BOILER TYPE

UNICA MAX 20S A

UNICA MAX 30S G

- Select COMBUSTION OFFSET RESTORE

- Press OK to confirm.

COMBUSTION OFFSET

6.16 TEMPORARY SWITCH-OFF

In the event of temporary absences (weekends, short breaks, etc.) set the status of the boiler to OFF .

Refer to section 3.3 for further details.

6.17 SWITCHING OFF FOR LENGTHY

Refer to section 3.4 for detailed advice on shutting down th appliance for an extended period of time.

6.18 COMBUSTION PARAMETERS

Although the parameters referring to the combustion control system ACC (Active Combustion Control) are preset in the

factory, the simultaneous replacement of both electronics boards (AKM and REC 10 MASTER) will require the re-

programming of these parameters.

- Set SERVICE password

- Select TECHNICAL COMBUSTION MONITORING

PERIODS

OFF

WINTER

OFF

RESTORE

RESET

COMBUSTION SELF-CALIBRATION

Function used by the after sales service to make an automatic combustion curve correction if the CO2 values (shown in the technical data) are outside the permitted range.

- Power the boiler electrically by bringing the main switch to “ON”.

- Set the boiler status to OFF.

- Select TECHNICAL COMBUSTION CONTROL SELF-CALIBRATION.

- Set the values to:

RESTORE = use the old curve (if the CO2 value is too high) RESET = use the new curve (if the CO2 value is too low).

This parameter is only available when the system is OFF.

6.19 MAINTENANCE

In case where, after the replacement of the electronic board or the maintenance of the detection electrode or the burner, the combustion analysis would restore out of tolerance values, it may be necessary to take action on the parameter COMBUSTION OFFSET as described in the

Note: in case of replacement of the electrode, slight

section 6.18

variations of the combustion parameters can not be excluded. These data wil return to nominal values after a few hours of operation.

Do not clean the appliance or its parts with inammable

substances (e.g. petrol, alcohol, etc.).

Do not clean panels, painted parts and plastic parts with paint thinner.

Panel cleaning must be carried out only with soapy water.

Cleaning the siphon

- Disconnect the tubes (A) and (B), remove the clip (C) and remove the siphon.

- Unscrew the bottom and top caps, then remove the float.

- Clean the parts of the siphon from any solid residues.

Do not remove the syphon float or seal as these items are integral in preventing the possibility of flue gases escaping to atmosphere if/when the syphon is devoid of any condensate fluid

Once the operations have been completed, reassemble the components by operating in the reverse order to what is described, checking the floating seal and replace it if necessary. If replacing the float gasket, make sure it is correctly positioned in its seat (see figure in section).

At the end of the cleaning sequence, ll the siphon with

water before restarting the boiler as follows:

- slowly open the de-aeration valve (7 - fig. 3) and leave it open until the amount of water contained in the siphon reaches the maximum level

- close the de-aeration valve (7 - fig. 3)

- check that the condensate siphon connection is tight

- check that the system pressure has not dropped below 1 bar. If necessary, fill the system.

CHECK THAT THE CONDENSATE DRAIN OUTLET

SIPHON CONTAINS WATER, IF IT WAS NOT FILLED PROCEED AS DESCRIBED ABOVE.

At the end of the siphon maintenance operations, it is recommended to bring the boiler to condensing mode for a few minutes and to check for leaks from the entire condensate evacuation line.

Maintenance of the combustion control system Maintenance electrode

The detection electrode/ionization sensor has an important function in the boiler ignition phase and in the maintenance of optimal combustion; in this context, in the event of replacement, it is necessary to always ensure that it is correctly positioned

and to strictly observe the reference shown in the gure.

ame ignition

electrode

detector electrode/

ionisation sensor

Do not clean the electrode with sandpaper or any other abrasive material.

The ‘Iono’ electrode will degrade over a period of time and continued usage; it is therefore strongly recommended that it be replaced after 5-years of use; in

order to ensure continued performance and e󰀩ciency,

and avoid appliance malfunction

Cleaning the air lter

- Unscrew the fixing screw A and remove the air filter.

- Blow compressed air on the filter to remove any impurities.

- In case of persistent dirt wash with water.

6.20 FINAL CHECKS

• ENSURE THE APPLIANCE FLUE SYSTEM IS FITTED CORRECTLY AND IS PROPERLY SECURED.

• ENSURE ALL PIPE WORK IS RE-CHECKED FOR TIGHTNESS.

• COMPLETE BENCHMARK CHECKLIST.

FOR UK ONLY

Complete details of the boiler, controls, installation and commissioning in the Benchmark checklist at the back of this book. It is important that the Benchmark checklist is correctly completed and handed to the user. Failure to install and commission the appliance to the manufacturers instructions will invalidate the warranty.

6.21 INSTRUCTING THE USER

Hand over all documentation supplied with this appliance – including these instructions – and explain the importance of keeping them in a safe place. Explain to the user how to isolate the appliance from the gas, water and electricity supplies and the locations of all drain points. Show the user how to operate the appliance and any associated controls correctly. Show the

user the location of the lling valve and how to top-up the system

pressure correctly and show the location of all manual air

release points. Explain to the user how to turn o󰀨 the appliance

for both long and short periods and advise on the necessary precautions to prevent frost damage.

Explain to the user that for continued safe and e󰀩cient operation,

the appliance must be serviced annually by a competent person.

IMPORTANT

To validate the appliance warranty, it’s necessary to register the appliance details with us. The warranty can be registered in several ways:

• online at: vokera.co.uk

• for UK residents by calling: 0800 479 0751

• for ROI residents by calling: 056 7755055.

7. SECTION - SERVICING INSTRUCTIONS

GENERAL

Once the appliance has been serviced, the benchmark Service Record must be completed.

For UK only

It is important that the Benchmark Service Record is correctly completed and handed to the user. Failure to install and commission the appliance to the manufacturers instructions will invalidate the warranty.

To ensure the continued safe and e󰀩cient operation of the

appliance, it is recommended that it is checked and serviced at regular intervals. To ensure correct and safe operation of the appliance, it is essential that any worn or failed component be replaced only with a genuine Vokèra spare part. It should be remembered that although certain generic components may

look similar, they will be specic to an individual appliance

or product range. Use of non-genuine Vokèra spare parts could invalidate your warranty and may pose a potential safety hazard. The frequency of servicing will depend upon the particular installation conditions, but in general, once per

year should be su󰀩cient. It is the law that any servicing work

is carried out by competent person such as a Vokèra engineer, an approved service agent, British Gas, GAS SAFE registered

personnel or other suitably qualied personnel. The following

instructions apply to the appliance and its controls, but it should be remembered that the central heating and the domestic hot water systems would also require attention from time to time.

ROUTINE ANNUAL MAINTENANCE

The appliance incorporates many ‘state-of-the-art’ components that are either ‘solid-state’ or are regarded as ‘non-serviceable’ items. As a consequence, the requirements for routine annual maintenance are focussed upon:

1. ensuring that the appliance and ue system are in a safe

condition

2. ensuring that the appliance is operating safely

3. ensuring that the appliance is performing to its design

specication.

When the appliance has been installed to within the minimum stated clearances; the appliance layout is such that it enables routine annual maintenance to be carried out entirely from the front of the appliance.

NOTE

Any noticeable defect or deterioration on or within the

appliance and ue system that impacts or a󰀨ects the above

requirements; will warrant further diagnosis and repair, which may result in the replacement of components.

Specic advice and instruction on the removal and replacement

of component parts of the appliance can be found online using the adjacent QR code or by visiting our website.

ROUTINE ANNUAL MAINTENANCE REQUIREMENTS

1. Check the operation of the appliance in both the heating and hot water modes and ensure the performance is in line

with the appliance specication.

2. Using the UI menu, navigate to the alarms history and check for any recent alarm events (menu string is: MENU SETTINGS TECHNICAL ERROR HISTORY).

Refer to the alarm/fault codes description chart for further

information.

3. Remove the front cover (see section 6.12) and visually inspect the internal components and electrical wiring for any defect or deterioration.

4. Visually check for any dirt or debris within the condensate trap (the trap is translucent and can be checked visually).

5. Replace the front cover as detailed in section 6.12 taking

notice of the importance of ensuring that the e󰀨ectiveness

of the – front cover – seals are not compromised.

6. Carry out a combustion analysis as detailed in section

6.12.

7. Visually check the entire ue system for any damage, defect,

or deterioration.

NOTE

In order to access the ‘alarms history’ it is necessary to access the password protected settings. Refer to section 8 for further details.

UNSCHEDULED MAINTENANCE

The appliance incorporates software that monitors the operating conditions of the appliance, and will record any

‘unusual usage conditions’ that will a󰀨ect the requirement to

remove and clean the burner/heat exchanger assembly. When the ‘unusual usage’ hours reach a pre-determined threshold, the appliance will signal – via alarm code E091 – that the heat exchanger requires to be cleaned.

REPLACEMENT OF COMPONENTS

Although it is anticipated that this appliance will provide years of trouble-free service and outstanding performance; the lifespan of any component will be determined by factors such as operating conditions and usage levels. Should the appliance develop a

fault, the fault-nding section of this manual will greatly assist

in determining the cause; however further advice can be sought from the Vokera Technical Help-line. Remember always to use only genuine Vokera spare parts.

COMPONENT REMOVAL PROCEDURE

To remove/replace a component, access to the interior of the appliance is usually essential. Always isolate the appliance from the electrical supply – and if necessary remove the fuse.

• Close all service valves if any hydraulic and/or gas carrying item is to be removed.

• Remove the front cover – and where necessary or convenient – the side panels of the appliance as detailed in

5.7.1.

• If required, drain the primary circuit via the drain valve (located adjacent to the diverter valve) using the tubing supplied with the appliance.

• If required, drain the secondary circuit via the available DHW outlets.

NOTE

When removing a hydraulic component, ensure that some water absorbent cloths are available to catch any residual water that may drip from the appliance and/or the removed component.

When the appliance has been installed to within the stated minimum clearances; it may be necessary to remove

adjacent components in order to facilitate access to a specic

component. Carry out the relevant elements of the commissioning

procedure (section 8) after replacing a component.

ALWAYS TEST FOR GAS TIGHTNESS IF ANY GAS CARRYING COMPONENT HAS BEEN DISTURBED, REMOVED, OR REPLACED.

WHEN REPLACING THE SIDE PANELS AND/OR THE FRONT COVER, ENSURE THE ROOM SEALED INTEGRITY OF THE APPLIANCE HAS NOT BEEN COMPROMISED – REFER TO 5.7.1.

To obtain detailed specic information and instructions on how to remove and replace specic components, please access

our online resources by logging on to our website.

www.vokera.co.uk www.vokera.ie

8. SECTION - CHECKS, ADJUSTMENTS AND FAULT FINDING

NOTE: please refer to section 4, section 4.1 and use the ap-

propriate PPE when carrying out any of the actions or procedures contained within this section.

8.1 CHECKING APPLIANCE OPERATION

When carrying out any repairs or servicing to the appliance, the relevant commissioning procedure must be undertaken to ensure the continued safe operation of the appliance. Particular attention should be made to ensure gas tightness, water tightness and the electrical integrity of the appliance.

8.2 APPLIANCE MODES OF OPERATION

NOTE

There must be su󰀩cient system water pressure (min. 0.5 bar)

to ensure the water pressure switch is activated. If there is

insu󰀩cient system pressure the pump and fan will be prevented

from operating and the low-pressure fault code will be indicated.

8.2.1 OFF

When the appliance has been set to OFF via the REC10 UI, the following functions will remain active:

• frost-protection system

• pump anti-block.

8.2.2 ON-BOARD FUNCTIONS

• FROST-PROTECTION: this function is only active when there are no requests for heating or HW. If the temperature drops below 5°C, the boiler will operate on minimum power until the temperature of the thermistors reaches 35°C for CH and 55°C for DHW. Thereafter the pump & fan will over-run for 30-seconds.

• ANTI-CYCLE FUNCTION: the anti-cycle function ensures the

burner remains switched o󰀨 for at least 3-minutes after the

set-point hysterisis (set-point + 5-deg) for CH heat request.

• PUMP ANTI-BLOCK FUNCTION: when there has been no heating or HW request for 24-hours, the anti-block cycle is activated. The pump will be activated for a period of 30-seconds.

8.2.3 HEATING MODE

When a ‘heating’ request is generated via the connected external control/s and/or the REC10 UI, the appliance will operate in the heating mode. The pump and fan will be activated

via the ow temperature sensor. When the fan is sensed to

be operating correctly (tacho signal), the ignition sequence commences. Ignition is sensed by the electronic circuit to

ensure ame stability at the burner. Once successful ignition

has been achieved, the electronic circuitry increases the gas rate to 75% for a period of 15 minutes. The speed of the fan and therefore the output of the boiler is determined by the temperature of the water sensed by the

ow temperature sensor, consequently a high temperature at the ow sensor results in a lower fan speed. As the water

temperature increases, the temperature sensors – located

on the ow pipe of the boiler – reduce the fan speed via the

electronic circuitry. Depending on the load, either the water temperature will continue to rise until the set point is achieved or the water temperature will fall whereby fan speed will increase relative to the output required. When the boiler has reached

the set point (+ hysterisis), the burner will switch o󰀨. The built-

in anti-cycle device prevents the burner from re-lighting for approximately 3-minutes.

When the temperature of the ow sensor falls below the set

point (- hysterisis), the burner will re-light.

NOTE

If burner ignition is not detected at the rst attempt, the appliance

will repeat the ignition sequence another two times (3-times in total) before going to lockout. When the set-point has been reached as measured at the primary thermistor, the appliance

will begin the modulation phase whereby the fan and gas valve will continuously modulate to maintain the set-point. If the temperature continues to rise and exceeds the set-point by 5°C (hysterisis), the burner will shut down. A new ignition sequence will be enabled when the 3- minute anti-cycle has been performed and the temperature at the primary thermistor has dropped 5°C (hysterisis) below the set-point.

NOTE

When the request for heating and/or hot water has been

satised, the appliance pump and fan may continue to circulate

to dissipate any residual heat within the appliance.

ATTENTION

Gas type and appliance outputs are factory set by default, at

the values declared in the specication data in section 2.

Vokera cannot accept any responsibility for any damage or malfunction that has been caused as a result of tampering or incorrect set up of this appliance during installation or commissioning.

8.3 CHECKING THE EXPANSION VESSEL

Carry out the component removal procedure. You must ensure that the boiler is completely drained of water. Using a suitable pressure gauge, remove dust cap on expansion vessel and check the charge pressure. The correct charge pressure should be 1.0 bar ± 0.1 bar. If the charge pressure is less, use a suitable pump to increase the charge.

NOTE

You must ensure the drain valve is in the open position whilst re-charging takes place. Replace the dust cap and carry out the relevant commissioning procedure (section 6).

8.4 EXTERNAL FAULTS

Before carrying out any faultnding or component replacement,

ensure the fault is not attributable to any aspect of the installation.

8.4.1 INSTALLATION FAULTS

Symptom Possible cause

No ignition Check wiring/check electrical

supply/check gas supply

No Heating and/or HW Check external controls

Fault Possible cause Fault code Check gas supply, check ue

system

8.5 ELECTRICAL CHECKS

Any electrical checks must be carried out by a suitably qualied

person.

8.5.1 EARTH CONTINUITY TEST

Isolate the appliance from the electrical supply, and using a suitable multi-meter carry out a resistance test. Connect test leads between an appliance earth point and the earth wire of the appliance supply cable. The resistance should be less than 1 OHM. If the resistance is greater than 1 OHM check all earth wires and connectors for continuity and integrity.

8.5.2 SHORT CIRCUIT CHECK

Isolate the appliance from the electrical supply, and using a suitable multi-meter, carry out a short circuit test between the Live & Neutral connections at the appliance terminal strip. Repeat above test on the Live & Earth connections at the appliance terminal strip.

NOTE

Should it be found that the fuse has failed but no fault is indicated, a detailed continuity check will be required to trace the fault. A visual inspection of components may also assist in locating the fault.

8.5.3 POLARITY CHECK

INSTALLER

INSTALLATION

INSTALLER

TIME & DATE

USE THE ARROWS TO MODIFY

CONFIGURATION

ON BOARD

AMBIENT

WHERE IS

THE REC10 INSTALLED?

BOILER

With the appliance connected to the electrical supply and using a suitable multimeter, carry out the following voltage tests:

• connect test leads between the Live & Neutral connections at the appliance terminal strip. The meter should read approximately 230V ac. If so proceed to next stage. If not, see section 8.6.

• connect test leads between the Live & Earth connections at the appliance terminal strip. The meter should read approximately 230V ac. If so proceed to next stage. If not, see section 8.6.

• connect test leads between the Neutral & Earth connections at the appliance terminal strip. The meter should read approximately 0 – 15Vac. If so polarity is correct. If not, see section 8.6.

8.5.4 REVERSED POLARITY OR SUPPLY FAULT

Repeat the above tests at the appliance isolator, if testing reveals correct polarity and/or supply at the isolator, re-check wiring and connections between the isolator and the appliance. If tests on the isolator also reveal reversed polarity or a supply fault, consult the local electricity supplier for advice.

DISTANCE TO EARTH CHECK

Isolate the appliance from the electrical supply, and using a suitable multi-meter carry out a resistance test. Connect test leads between the Live & Earth connections at the appliance

terminal strip. If the meter reads other than innity there is a

fault that must be isolated, carry out a detailed continuity check to identify the location of the fault. These series of checks must be carried out before attempting

any faultnding procedures on the appliance. On completion

of any task that required the disconnection and re-connection of any electrical wiring or component, these checks must be repeated.

- the UI screen will display the rmware version – press any

key to continue

- select language (ENGLISH)

- enter the time and date

- select MASTER

- select conguration type: NEW or MAIN PCB (see below)

MULTI ZONE CONTROLLER

8.8.1

REC10 V01.26

PRESS ANY KEY

TO CONTINUE

ENTER TIME AND DATE

12 17:

18 / 11 / 2013

BOILER CONFIGURATION

ENGLISH

ITALIANO

SELECT THE TYPE

OF CONFIGURATION

MAIN PCB

FROM AKM

NEW

The BOILER menu allows you to change the hydraulic configuration without necessarily having to go through a SYSTEM RESET operation. The HYDRAULIC CONF parameter can assume values between 0 and 4 with the following meaning: 0 = only heating boiler 1 = instantaneous boiler with flowswitch 2 = instantaneous boiler with flowmeter 3 = only heating boiler with water tank with probe 4 = only heating boiler with water tank with thermostat.

8.6 FAULT FINDING

Before attempting any faultnding, the electrical checks as

detailed in section 8.5 must be carried out. Isolate the appliance from the electrical supply. Disconnect any external controls from terminal plug, and insert a link-wire between the two wires at the ‘TA’ connections of the BE11 board.

NOTE

Restore the electrical supply to the boiler and RESET functionning. The boiler should now function as described in section 8.2. Should the boiler fail to respond, the internal fuses and connectors should be checked to ensure integrity and continuity.

8.7 APPLIANCE STATUS AND FAULT CODES

When the boiler detects a temporary fault condition, the

appropriate code is shown. If/when the fault is nal, the pump

will perform 30 to 60-second post circulation (depending on the error code) and fault code will be displayed. For combustion fault, FAN can also post vent up to 5min if required.

8.8 REC10 SYSTEM RESET

Warning! – This operation must only be carried out by

qualied personnel!

If required, the system conguration can be reset back to the factory default conguration; however care needs to be taken

in order to carry out a successful reset:

- access to menu TECHNICAL INSTALLATION SYSTEM RESET CONFIRM or CANCEL

WEATHER COMPENSATION

TECHNICAL

INSTALLATION

PARAMETERS

RANGE RATED

CALIBRATION

ZONES MANAGER

SENSOR CALIBRATION

SYSTEM RESET

CONFIRM

CANCEL

8.8.2 CONFIGURATION FROM AKM PCB

- Select conguration type: MAIN PCB

- The REC10 will use the information/settings stored on the

AKM PCB to congure the appliance

SELECT THE TYPE

OF CONFIGURATION

MAIN PCB

NEW

8.8.3 NEW CONFIGURATION

- Select conguration type: NEW

- Select location of REC10: ON BOARD

- Select PLANT type: CH ONLY – INSTANTANEOUS – HW (STORAGE TANK) (see below)

SELECT THE TYPE

OF CONFIGURATION

MAIN PCB

NEW

PLANT

CH ONLY

INSTANTANEOUS

HW TANK

SELECT THE PLANT

- select CH ONLY if the appliance is a ‘heat’ only system boiler

- select INSTANTANEOUS if the appliance is a combination boiler

- then select FLOW METER (FLUX METER (only selectable with INSTANTANEOUS).

NOTE

PLANT

FLOW METER

FLOW SWITCH

After a system reset where the conguration selection is

‘new’, carry out a check on the various (applicable) installation

parameters to ensure that the ‘new’ conguration meets the

requirements of the system.

8.9 ACCESS TO INSTALLATION PARAMETERS

Warning! – Unqualied personnel and/or ‘end-users’

should not attempt to access or adjust ANY installation parameter; serious damage or appliance malfunction may occur as the result of an incorrectly set parameter.

To access the installation parameters:

1. select MENU from the REC10 UI

2. simultaneously press and hold both the ‘return’ and ‘downarrow’ buttons until the display changes to show: INSERT PASSWORD

3. using the ‘up-arrow’ button, press until ‘18’ is shown in the display, then press ‘select’

4. use the following menu string: MENU TECHNICAL

5. refer to the section 3.1 for further details.

8.10 Typical BeSMART connection –

connected to the M4 terminal strip

8.11 Typical connection from remote room thermostat and clock – connected to the BE11

8.12 S-PLAN & Y-PLAN WIRING CONFIGURATIONS

Warning! – Failure to follow the wiring congurations as

detailed below, may result in malfunction and/or internal damage to the appliance.

The UNICA MAX S system boilers incorporate an internal relay that enables a direct switched 230v supply to be used to generate a heating or hot water request from an external control system such as Y-PLAN or S-PLAN.

To congure an S or Y PLAN control system with the UNICA MAX S boiler, proceed as follows:

1 Isolate the appliance from the electrical supply and remove

the front cover as detailed in section 5.7.1. gain access to the appliance PCB as detailed 5.7.3

2 Identify the internal relay PCB (BE11), which is located to

the right hand side of the main control PCB

3 Route the external wiring from the Y-Plan/S-Plan control

system through one of the cable entry points that are located on the lower right-side of the appliance

4 Using the (below) relevant diagram as a reference, connect

the switched 230v supply (Live & Neutral) from the external control system (Y-Plan/S-Plan) to the small PCB (BE11) at terminals CN1

5 Replace the PCB cover ensuring that no internal wiring is

trapped or strained

6 Replace the appliance front cover as detailed in section

5.7.1.

NOTE

• Under no circumstances should the Y-Plan/S-Plan wiring be

connected directly to the TA connections.

• Ensure that the appliance and all other external controls,

are served and isolated from the same electrical supply/ isolator.

• Ensure that the cable entry point is suitably sealed with

silicone sealant or adhesive tape.

S-plan

BE11

BE11 CONNECTIONS

black

CN2

black

CN1

BOILER

230 V

auxiliary

blue

brown

blue

F=3.15A F

brown

123

230 V

Fuse 3 AMP

ORANGE

BROWN

BLUE

2 PORT VALVE

HEATING

GREY

ORANGE

BROWN

BLUE

2 PORT VALVE HOT WATER

GREY

PROGRAMMER

Hot Water

Heating

COM

THERMOSTAT

COM

THERMOSTAT

ROOM

CYLINDER

COM

Y-plan

BE11

BE11 CONNECTIONS

black

CN2

black

CN1

BOILER

230 V

auxiliary

blue

brown

blue

F=3.15A F

brown

123

230 V

Fuse 3 AMP

ORANGE

GREEN-YELLOW

BLUE

WHITE

GREY

PROGRAMMER

Hot Water

Heating

COM

THERMOSTAT

COM

CYLINDER

THERMOSTAT

ROOM

MID POSITION ZONE VALVE

Key

AKM0X Main PCB REC Remote control BE11 On board relè PCB X1-X25-CN1 Connectors S.W.1 CO2 function button F.S. Flame sensor F External fuse 3.15A F F1 Fuse 4A T M2 Terminal strip for electrical connection high power M4 Terminal strip for electrical connection OT+ Open therm SE External sensor CE4 External link connector:

(- A B +) Bus 485

OPE Gas valve solenoids P Pump PWM PWM signal F Hv Fan power supply 230 V TSC2 Ignition transformer S.E. Spark electrode F.O.H.T Flow over heat thermostat FS Flue sensor FT Flow thermistor RS Return thermistor P.T. Pressure transducer MOD Modulator F Lv Fan signal control

FUNCTIONAL DIAGRAM

TBT

thermostat)

ACCESSORIES

(underoor heating

X25

(room thermostat)

M4 OT+ (open therm)

BE11

REC

(external sensor)

CE4 Zone control dir/mix

orange (A) yellow (B) black (-)

red (+24 Vdc)

CE4 Hybrid modules

X2 Remote alarm

yellow (B)

black (-)

orange (A)

X14

SW1

Zone valve or

supplementary pump

X21

red (+24 Vdc)

X14

red (+24 Vdc) yellow (B) orange (A) black (-)

X12

+ B

CE4 (removable connector

positioned under shelf)

S.E.

TSC2

F=3.15A F

L N

230 V

auxiliary

blue (-)

brown (+)

PWM

OPEOPE

GAS VALVE

F.S.

NOTA : L-N- E connection is advisable

orange

yellow/green

blue

brown

X15

1 2

blue brown

brown blue

blue

F Hv

blue

brown

5 4

2 1

brown

blue

pink

blue

brown

1 2 43

X15

X8 X21 X2

1 3 1 5 1

AKM0x

1 2

F1=4A T

X11

X13

X25

P.T.

F Lv

MOD

X9 X19

X13

grey (-) blue (HS)

pink(PWM) red (+24Vdc)

grey

black (+5Vdc)

blue (sign.)

brown (-)

X19

X11

To connect the:

TBT = Underfloor heating thermostat

the white marked jumper must

be cut in halfwith the word TBT

present in the 2-pole connector

(X25),strip the wires and use an

electrical clamp for the splice.

white

X25

red

red white

white grey grey

blue blue

orange (SE)

pink (OT+)

orange (SE)

OT+

pink (OT+)

black (TA)

CN1

BE11

black

CN2

black

R.S.

F.T.

TBT

-t°

F.S.

-t°

F.O.H.T.

9. SECTION - LPG INSTRUCTIONS

ERROR HISTORY

EXHAUST PROBE RESET

AIR PURGING CYCLE

PARAMETERS

COMBUSTION MONITORING

SERVICE

TECHNICAL

BOILER TYPE

COMBUSTION OFFSET

GAS TYPE

SERVICE

COMBUSTION MONITORING

GAS TYPE

9.1 RELATED DOCUMENTS

BS 6798 INSTALLATION OF BOILERS OF RATED INPUT NOT EXCEEDING 60 kW BS EN 12828 DESIGN FOR WATER-BASED HEATING SYSTEMS BS 5440 PARTS 1 & 2 FLUES & VENTILATION BS 6891 SPECIFICATION FOR THE INSTALLATION AND MAINTENANCE OF LOW

PRESSURE GAS INSTALLATION PIPEWORK OF UP TO 35 MM

9.2 TECHNICAL DATA

Gas Pressures UNICA MAX 20S UNICA MAX 30S

Inlet pressure 37.0 mbar 37.0 mbar

Maximum gas rate 1.55 (kg/h) 2.48 (kg/h)

Minimum gas rate 0.39 (kg/h) 0.54 (kg/h)

Injector size (mm) 1 x Ø 4.3 mm 1 x Ø 5.2 mm

Number of fan rotations with slow ignition 5,500 (rpm) 5,500 (rpm)

Maximum number of heating fan rotations 6,000 (rpm) 7,200 (rpm)

Minimum number of heating fan rotations 2,000 (rpm) 1,900 (rpm)

Emissions

NOx (max-min) 30 - 30 p.p.m. 50 - 40 p.p.m.

CO (max-min) 130 - 10 p.p.m. 160 - 10 p.p.m.

CO2 (max-min) (*) 10.0 - 10.0 % 10.0 - 10.0 %

(*) CO2 tolerance = +0.6% -1%

9.3 APPLIANCE RE-CONFIGURATION FOR LPG

WARNING! The gas supply to the appliance must remain turned OFF until the following procedure has been completed.

1. Select S TATE BOILER.

2. Set the SERVICE password

3. Select TECHNICAL COMBUSTION MONITORING GAS TYPE LPG

NATURAL GAS

LPG

4. Use the ‘back’ button to return to the ‘TECHNICAL’ menu

and select ‘COMBUSTION MONITORING’.

5. Using the data in section 6.2.5, adjust the fan speed

settings to the values indicated in section 6.2.5 – pressing

the select button to conrm each change.

6. Press and hold the ‘back’ button for 2-seconds to exit the

‘Service’ parameters menu.

7. Carry out a combustion check – as detailed in section 6.12

– using the LPG values as indicated in section 6.2.5 above.

NOTE: the appliance gas valve is factory set and therefore non-adjustable. Do not attempt to adjust or interfere with the settings of the gas valve, as to do so, will cause the appliance to malfunction and may lead to serious damage. The boiler DOES NOT require additional adjustments.

The boiler may only be converted by qualied sta󰀨.

After conversion apply the LPG label to the appliance data plate (LPG label is contained within the documentation pack).

COMMISSIONING: CO AND COMBUSTION RATIO CHECK

SET BOILER TO MAXIMUM RATE

stabilise. , insert analyser probe into air inlet sampling point.

Is O2 ≥20.6%

CHECK CO AND

YES

CHECK CO AND COMBUSTION

recording.

Turn off appliance and

and resolved.

Turn off appliance and call

YES

BEFORE CO AND COMBUSTION RATIO CHECK

The installation instructions should have been followed, gas type verified and gas supply pressure/rate checked as required prior to commissioning. As part of the installation process, ESPECIALLY WHERE A

FLUE HAS BEEN FITTED BY PERSONS OTHER THAN THE BOILER INSTALLER, visually check the integrity of the whole

flue system to confirm that all components are correctly assembled, fixed and supported. Check that the maximum flue lengths have not been exceeded and all guidance has been followed (e.g. Technical Bulletin 008). The flue gas analyser should be of the correct type, as specified by BS 7967. Before use, the flue gas analyser should have been maintained and calibrated as specified by the manufacturer. The installer must have the relevant competence for use of the analyser. Check and zero the analyser IN FRESH AIR, as per analyser

NOTE

The air/gas ratio valve is factory-set and must not be adjusted during commissioning unless this action is recommended, following contact with the Vokera technical help line. If any such adjustment is recommended and further checking of the boiler is required, the engineer must be competent to carry out this work and to use the flue gas analyser accordingly. If the boiler requires conversion to operate with a different gas family (e.g., conversion from natural gas to LPG) separate guidance will be provided by the Vokera technical help line and must be followed.

manufacturer’s instructions.

In accordance with, section 7.3, set boiler to operate at maximum rate (full load condition). Allow sufficient time for combustion to

Verify flue integrity

Analyser readings indicate that combustion products and inlet air are mixing. Further investigation of the flue is therefore required. Check that flue components are correctly assembled, fixed and supported as per boiler/flue instructions.

and CO2 < 0.2%?

COMBUSTION RATIO AT MAXIMUM RATE

With boiler still set at maximum rate, insert analyser probe into flue gas sampling point. Allow readings to stabilise before

Check that flue and flue terminal are not obstructed.

Vokera’s technical helpline

call Vokera’s technical helpline for advice. The appliance must not be commissioned until problems are identified

Check all seals around the appliance burner, internal flue seals, door and case seals. Rectify where necessary.

Is CO less than 350ppm AND CO/CO

2 ratio less

than 0.004?

for advice. The appliance must not be commissioned until problems are identified and resolved. If commissioning cannot be fully completed, the appliance must be disconnected from the gas supply in accordance with the GSIUR.

NOTE: Check and record CO and

combustion ratio at both maximum AND minimum rate before contacting the Vokera

Is CO less than 350ppm AND CO/CO

2 ratio

less than

0.004?

IIss CCOO << 335500ppppmm aanndd CCOO//CCO lleesss

tthhaann 00..000044 ?

rraattiioo

RATIO AT MINIMUM RATE

With boiler set at minimum rate, insert analyser probe into flue gas sampling point. Allow readings to stabilise before

SET BOILER TO MINIMUM RATE

In accordance with section 7.3, set boiler to operate at minimum rate (to minimum load condition). Allow sufficient time for combustion to stabilise.

Boiler is operating satisfactorily No further actions required.

Ensure test points are capped, boiler case is correctly replaced and all other commissioning procedures are completed. Complete Benchmark Checklist, recording CO and combustion ratio readings as required.

Benchmark Commissioning &

Warranty Validation Service Record

It is a requirement that the boiler is installed and commissioned to the manufacturers’

To instigate the boiler warranty the boiler needs to be registered with the manufacturer within one month of the installation. The warranty rests with the end-user (consumer), and they should be made aware it is ultimately their responsibility to register with the manufacturer, within the allotted time period.

It is essential that the boiler is serviced in line with the manufacturers’ recommendations, at least annually. This must be carried out by a competent Gas Safe registered engineer. The service details should be recorded on the Benchmark Service and Interim Boiler Work Record and left with the householder. Failure to comply with the manufacturers’ servicing instructions and requirements will invalidate the warranty.

www.hhic.co.uk

This Commissioning Checklist is to be completed in full by the competent person who commissioned the boiler as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference.

Failure to install and commission according to the manufacturers’ instructions and complete this Benchmark Commissioning Checklist will invalidate the warranty. This does not affect the customer’s statutory rights.

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GAS BOILER SYSTEM COMMISSIONING CHECKLIST & WARRANTY VALIDATION RECORD

Address:

Boiler make and model:

Boiler serial number:

Commissioned by (PRINT NAME): Gas Safe registration number:

Company name: Telephone number:

Company email: Company address:

Commissioning date:

Heating and hot water system complies with the appropriate Building Regulations? Yes

Time, temperature control and boiler interlock provided for central heating and hot water Yes

Boiler Plus requirements (tick the appropriate box(s))

Boiler Plus option chosen for combination boiler in ENGLAND

Time and temperature control to hot water Cylinder thermostat and programmer/timer Combination boiler

Zone valves pre-existing Fitted Not required

Thermostatic radiator valves pre-existing Fitted Not required

Automatic bypass to system pre-existing Fitted Not required

pre-existing Fitted Not required

Water quality

What system cleaner was used? Brand: Product:

What inhibitor was used? Brand: Product:

pre-existing Fitted Not required

CENTRAL HEATING MODE measure and record (as appropriate)

Gas rate (for combination boilers complete DHW mode gas rate) m3/hr or ft3/hr

Central heating output left at factory settings? Yes No

If no, what is the maximum central heating output selected? kW

Dynamic gas inlet pressure mbar

Central heating return temperature °C

System correctly balanced/rebalanced? Yes

COMBINATION BOILERS ONLY

Is the installation in a hard water area (above 200ppm)? Yes No

Water scale reducer/softener pre-existing Fitted Not required

Brand: Product:

If yes- DHW expansion vessel pre-existing Fitted Not required

Pressure reducing valve pre-existing Fitted Not required

DOMESTIC HOT WATER MODE Measure and record

Gas rate m3/hr or ft3/hr

Dynamic gas inlet pressure at maximum rate mbar

Cold water inlet temperature °C

Hot water has been checked at all outlets Yes Temperature °C

CONDENSATE DISPOSAL

The condensate drain has been installed in accordance with the manufacturers’ instructions and/or BS5546/BS6798 Yes

Point of termination Internal External (only where internal termination impractical)

Method of disposal Gravity Pumped

ALL INSTALLATIONS

Record the following

At max rate: CO ppm CO

At min rate (where possible) CO ppm CO

The operation of the boiler and system controls have been demonstrated to and understood by the customer Yes

The manufacturers’ literature, including Benchmark Checklist and Service Record, has been explained and left with the customer Yes

Commissioning Engineer’s signature

Customer’s signature

Weather compensation Smart thermostat with automisation and optimisation

Load compensation Flue Gas Heat Recovery

instructions Yes

Yes No

% CO/CO

instructions, and readings are correct? Yes

Ratio

°C

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SERVICE & INTERIM BOILER WORK RECORD

It is recommended that your boiler and heating system are regularly serviced and maintained, in line with manufacturers’ instructions, and that the appropriate service / interim work record is completed.

Service provider

When completing a service record (as below), please ensure you have carried out the service as described in the manufacturers’ instructions. Always use the

SERVICE/INTERIM WORK ON BOILER delete as appropriate

Engineer name: Company name:

Telephone N

Max rate CO ppm CO

Min rate CO ppm CO

undertaken in accordance with manufacturers’ instructions, and readings are correct?”

Gas rate: m

System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *

: Gas Safe registration No:

/h OR ft3/h

delete as appropriate Yes No

% CO/CO

Date:

yes

yes n/a

Comments:

Signature:

instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.

SERVICE/INTERIM WORK ON BOILER delete as appropriate

Engineer name: Company name:

Telephone N

Max rate CO ppm CO

Min rate CO ppm CO

undertaken in accordance with manufacturers’ instructions, and readings are correct?”

Gas rate: m

: Gas Safe registration No:

/h OR ft3/h

delete as appropriate Yes No

% CO/CO

Date:

yes

SERVICE/INTERIM WORK ON BOILER delete as appropriate

Engineer name: Company name:

Telephone N

Max rate CO ppm CO

Min rate CO ppm CO

undertaken in accordance with manufacturers’ instructions, and readings are correct?”

Gas rate: m

System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *

: Gas Safe registration No:

/h OR ft3/h

delete as appropriate Yes No

% CO/CO

Date:

yes

yes n/a

Comments:

Signature:

instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.

SERVICE/INTERIM WORK ON BOILER delete as appropriate

Engineer name: Company name:

Telephone N

Max rate CO ppm CO

Min rate CO ppm CO

undertaken in accordance with manufacturers’ instructions, and readings are correct?”

Gas rate: m

: Gas Safe registration No:

/h OR ft3/h

delete as appropriate Yes No

% CO/CO

Date:

yes

System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *

yes n/a

Comments:

Signature:

instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.

SERVICE/INTERIM WORK ON BOILER delete as appropriate

Engineer name: Company name:

Telephone N

Max rate CO ppm CO

Min rate CO ppm CO

undertaken in accordance with manufacturers’ instructions, and readings are correct?”

Gas rate: m

System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *

: Gas Safe registration No:

/h OR ft3/h

delete as appropriate Yes No

% CO/CO

Date:

yes

yes n/a

Comments:

Signature:

instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.

System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *

yes n/a

Comments:

Signature:

instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.

SERVICE/INTERIM WORK ON BOILER delete as appropriate

Engineer name: Company name:

Telephone N

Max rate CO ppm CO

Min rate CO ppm CO

undertaken in accordance with manufacturers’ instructions, and readings are correct?”

Gas rate: m

System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *

: Gas Safe registration No:

/h OR ft3/h

delete as appropriate Yes No

% CO/CO

Date:

yes

yes n/a

Comments:

Signature:

instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.

www.centralheating.co.uk

SERVICE & INTERIM BOILER WORK RECORD

Service provider

When completing a service record (as below), please ensure you have carried out the service as described in the manufacturers’ instructions. Always use the

SERVICE/INTERIM WORK ON BOILER delete as appropriate

Engineer name: Company name:

Telephone N

Max rate CO ppm CO

Min rate CO ppm CO

undertaken in accordance with manufacturers’ instructions, and readings are correct?”

Gas rate: m

System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *

: Gas Safe registration No:

/h OR ft3/h

delete as appropriate Yes No

% CO/CO

Date:

yes

yes n/a

Comments:

Signature:

instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.

SERVICE/INTERIM WORK ON BOILER delete as appropriate

Engineer name: Company name:

Telephone N

Max rate CO ppm CO

Min rate CO ppm CO

undertaken in accordance with manufacturers’ instructions, and readings are correct?”

Gas rate: m

: Gas Safe registration No:

/h OR ft3/h

delete as appropriate Yes No

% CO/CO

Date:

yes

SERVICE/INTERIM WORK ON BOILER delete as appropriate

Engineer name: Company name:

Telephone N

Max rate CO ppm CO

Min rate CO ppm CO

undertaken in accordance with manufacturers’ instructions, and readings are correct?”

Gas rate: m

System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *

: Gas Safe registration No:

/h OR ft3/h

delete as appropriate Yes No

% CO/CO

Date:

yes

yes n/a

Comments:

Signature:

instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.

SERVICE/INTERIM WORK ON BOILER delete as appropriate

Engineer name: Company name:

Telephone N

Max rate CO ppm CO

Min rate CO ppm CO

undertaken in accordance with manufacturers’ instructions, and readings are correct?”

Gas rate: m

: Gas Safe registration No:

/h OR ft3/h

delete as appropriate Yes No

% CO/CO

Date:

yes

System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *

yes n/a

Comments:

Signature:

instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.

SERVICE/INTERIM WORK ON BOILER delete as appropriate

Engineer name: Company name:

Telephone N

Max rate CO ppm CO

Min rate CO ppm CO

undertaken in accordance with manufacturers’ instructions, and readings are correct?”

Gas rate: m

System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *

: Gas Safe registration No:

/h OR ft3/h

delete as appropriate Yes No

% CO/CO

Date:

yes

yes n/a

Comments:

Signature:

instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.

System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *

yes n/a

Comments:

Signature:

instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.

SERVICE/INTERIM WORK ON BOILER delete as appropriate

Engineer name: Company name:

Telephone N

Max rate CO ppm CO

Min rate CO ppm CO

undertaken in accordance with manufacturers’ instructions, and readings are correct?”

Gas rate: m

System inhibitor concentration has been checked and appropriate action taken, in accordance with BS 7593 and boiler manufacturers’ instructions. *

: Gas Safe registration No:

/h OR ft3/h

delete as appropriate Yes No

% CO/CO

Date:

yes

yes n/a

Comments:

Signature:

instructions and BS 7593. It is only acceptable to not have undertaken this if the service engineers attendance visit was in between annual services to attend a non-water facing component.

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Vokèra Warranty Terms and Conditions

Vokèra Ltd offer customers the comfort of a parts and labour warranty repair service subject to the following terms and conditions.

Vokèra Ltd only obligation under the guarantee shall be to repair or replace the faulty appliance at Vokèra Ltd

discretion. This will be carried out where a fault arises from defects within the appliance, caused by either material or workmanship of the manufacturer.

1. The boiler must have been installed and commissioned within 12 months of manufacture by a registered Gas

Safe (RGII ROI) installer in accordance with the guidelines in the installation and servicing booklet provided with the boiler.

2. This guarantee does not protect malfunction or damage arising from incorrect installation, commissioning or

maintenance procedures, as laid out in the installation handbook, inefficient flue system, poor or incorrect electricity, wrong gas supply or pressure, tampering by inexperienced persons and any other cause not directly due to manufacture.

3. Vokèra Ltd cannot accept responsibility for any costs arising from repair or maintenance carried out by any

third party.

4. The "Benchmark" commissioning sheet (RGII Installation Certificate, ROI) must be completed by the installer

and left with the boiler for reference purpose.

5. The warranty will commence from the date of installation. Without proof of purchase ie an invoice or completed

"Benchmark" commissioning sheet (RGII Installation Certificate, ROI), the warranty will commence from the date of manufacture as detailed on the appliance data plate.

6. To qualify for the full term of warranty, the boiler must be serviced once annually by a Gas Safe

Registered Engineer (RGII ROI). Proof of annual service in accordance with the manufacturer’s instructions must be provided (e.g. Benchmark Service Record or RGII Service Certificates ROI). If this condition is not met the period of warranty will extend to only 12 months from date of installation.

7. The Vokèra “parts and labour” warranty is applicable to the boiler only. Vokèra controls and accessories,

including all time clocks, room thermostats, smart controls and weather compensation devices are sold subject to a 24 month Return to Base Warranty. No engineer service cover is offered on any Vokèra controls and/or accessories.

By registering your appliance, you will be helping us provide you with the best after sales service in the unlikely event that your boiler requires attention during the guarantee period.

If the boiler suffers a mechanical or an electrical breakdown or you require an annual service, please contact our Customer Care Centre on:

UK: 01274 866100

ROI: 056 7755057

Our normal working hours, excluding Bank holidays are:

8.15am - 5.00pm Monday to Friday (ROI, 8.30am - 5.00pm Monday to Thursday, 8.30am - 4.00pm Friday)

8.00am - 12.00pm Saturday (UK only)

We will arrange for an engineer or appointed agent, to inspect and repair, or where in our sole opinion repair is not economic, arrange to replace the boiler.

8. Health & Safety:

a. Engineers will only attend to boiler products where it is considered by the engineer that the installation does

not pose a risk to health and safety.

b. A permanently fixed access ladder must service installations in lofts or attics. Adequate lighting and

permanently fixed flooring must also be available.

c. Cupboard installations must provide minimum working clearances as detailed in the installation instructions.

Vokèra will not accept responsibility for the removal of cupboards, kitchen units or trims in order to gain access for repairs.

9. Warranty does not apply:

a. If the boiler is removed from its place of installation without our prior consent.

b. To any defect, damage or breakdown caused by inadequate servicing of the boiler or by deliberate action,

accident, misuse or third party interference including modification or an attempted repair which does not fully comply with industry standards.

c. To any defect, damage or breakdown caused by the design, installation and maintenance of the central

heating system.

d. To de-scaling or other work required as a result of hard water scale deposits or from damage caused by

aggressive water or sludge resulting from corrosion. Indications that such work may be required include a noisy boiler, cold spots on radiators, sludge in pipes and poor circulation of the central heating system.

e. If the claim/contact procedure set out in section 6 is not adhered to.

f. To any other costs or expenses caused by or arising as a result of the breakdown of a Vokèra Boiler.

g. To any costs incurred during delays in fixing reported faults.

10. We reserve the right to a charge a callout fee where:

a. There is no completed "Benchmark" commissioning sheet or equivalent control document present. b. There is incomplete or no service record(s) for each and every year the boiler has been installed. c. A fault cannot be found. d. The breakdown or fault has been caused by an event, which is excluded from the warranty – see section 9. e. Failure to cancel an agreed appointment prior to our engineers visit. f. The boiler is outside the period of warranty or the conditions of the warranty have not been met.

11. If we fit replacement parts or replace a boiler it will not extend the period of the warranty. All replaced parts or

boilers will become the property of Vokèra Ltd.

12. The warranty applies only where a Vokèra boiler has been installed in a domestic dwelling in the United Kingdom, Northern Ireland or Republic of Ireland, to provide heat and/or hot water to the central heating system.

13. Vokèra Ltd warranty is offered in addition to the rights provided to a consumer by law. Details of these rights can be obtained from a Trading Standards Authority or a Citizen Advice Bureaux.

UK: Vokèra Ltd, Custom er Care, Stubs Beck Lane, West 26 Business Park, Whitehall Road, Cleckh eaton,

BD19 4TT

ROI: Vokèra Lt d, Custom er Care, West Court, Callan, Co Kilkenny, Ireland , R95 PW40

Email: service@vokera.co.uk (UK), eire-service@vokera.co.uk (ROI)

RANGE RATED - EN 15502

The max CH input of this boiler has been adjusted to_____ kW, equivalent to _____ rpm max CH fan speed.

Date___/____/____

Signature _____________________

Boiler serial number

_____________________

Cod. 20188401 - 10/21 - Ed. 1

Registered address:

Unit 7 Riverside Industrial Estate

www.vokera.co.uk

Sales, General Enquires

Vokèra Limited reserve the right to change

specication without prior notice

Consumers statutory rights are not a󰀨ected.

Company Reg No: 1047779

Vokèra Ltd

Borderlake House

London Colney Herts AL2 1HG

www.vokera.ie

T 0844 391 0999 F 0844 391 0998

Vokèra Ireland

West Court, Callan

Co Kilkenny

T 056 7755057 F 056 7755060

Vokera Unica Max 20S/30S INSTALLATION AND SERVICING INSTRUCTIONS (Cod. 20188401 - 10/21 - Ed. 1)

Specifications and Main Features

Frequently Asked Questions

User Manual