Evolve 24C G.C., 28C G.C., 32C G.C., 36C G.C. User Instructions

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Users Instructions

Installation & Servicing Instructions

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.

evolve

High efciency combi boiler

evolve 24C G.C. N° 47-364-37 evolve 28C G.C. N° 47-364-38 evolve 32C G.C. N° 47-364-39 evolve 36C G.C. N° 47-364-40

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1. THINGS YOU SHOULD KNOW ................................................... 3

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

3. HOW TO.... .................................................................................12

4. WHAT IF ..................................................................................... 13

SECTION 1 - DESIGN PRINCIPLES AND OPERATING

SEQUENCE ...................................................................................15

SECTION 2 - TECHNICAL DATA ..................................................16

SECTION 3 - CONTROL PANEL (REC10) .................................... 19

SECTION 4 - GENERAL REQUIREMENTS (UK) .........................25

SECTION 4A - GENERAL REQUIREMENTS (EIRE) ....................26

SECTION 5 - INSTALLATION .......................................................28

SECTION 6 - COMMISSIONING ...................................................34

SECTION 7 - SERVICING INSTRUCTIONS .................................. 50

SECTION 8 - CHECKS, ADJUSTMENTS AND FAULT FINDING ....57

SECTION 9 - LPG INSTRUCTIONS .............................................. 62

Commissioning checklist ............................................................ 64

Benchmark ...............................................................................65-67

RANGE RATED

This boiler can be adapted to the heat requirements of the system, and in fact it is possible to set the range rated parameter as shown

in the specic paragraph.

After setting the desired output report the value in the table on the back cover of this manual, for future references.

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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 affect your statutory rights.

1.5 HOW DOES IT WORK?

Your evolve boiler supplies heated water to your radiators and hot water to your hot water taps. The central heating is controlled via a time clock and any thermostats that your installer

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

from the time clock via any thermostat that may be installed, or whenever a hot water outlet (tap) is opened. Your evolve 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.

USERS INSTRUCTIONS

Dear Customer Your Vokèra evolve 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 ef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.

INTRODUCTION

1. THINGS YOU SHOULD KNOW

1.7 CLEARANCES REQUIRED

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

evolve 24C - 28C 32C - 36C

HEIGHT 740 mm 740 mm WIDTH 420 mm 420 mm DEPTH 275 mm 350 mm

1.6 DIMENSIONS

* 100mm if rear-ue outlet is used or 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.

100

1.8 FROST PROTECTION SYSTEM

The evolve is equipped with a built-in frost protection system, this enables the boiler to over-ride the time controls – even if switched off – 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.

1.9 APPLIANCE STATUS INDICATORS

Your appliance incorporates the REC 10 UI (User Interface), that displays information on appliance status and condition.

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

The REC 10 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 setpoints.

The REC 10 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 REC 10 UI features a backlit liquid crystal display.

LED

Light signal indicating the operating status of the boiler. Can be red or green (see specific paragraph)

REC10

Boiler control panel

Key area

ok= confirm

back= ret

urn to the previous screen

cancel selection

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

up= allows you to choose between the options PLANT-STATE-SET-INFO-MENU and to

surf through the

submenus

scrolling upwards

down= allows you to choose between the options PLANT-STATE-SET-INFO-MENU and to

surfe through the

submenus

scrolling down

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, 3-way valve 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.

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. The “P” at the top of the domestic hot water icon indicates that the boiler preheating function is enabled; the “P” when flashing indicates that a preheating request is in progress.

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).

OFF

This icon indicates that the system (main zone) has been set to off (not active).

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.

Note:

The temperature of the hot water 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.

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

LED

REC10

FRI

18/05/2013 12:17

INFO SET

PLANT

HOT WATER TEMPERATURE

STATE

°C

1.3

bar

CONTROL PANEL (REC10)

Fig. 1

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2. GETTING STARTED

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g.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 radiators

and the water that ows from your hot water taps.

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. The hot water temperature range can be adjusted between 37C - 60C.

Please Note: the actual delivery temperature is also conditional

upon the incoming water temperature and the actual ow-rate

at the outlet. 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.

2.4 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).

18/05/2013 12:17

INFO SET

°C

1.3

bar

FRI

PLANT

HOT WATER TEMPERATURE

STATE

2.5 PLANT

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, 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.

2.6 STATE

The STATE function can be used to set the BOILER and MAIN ZONE operating modes.

To do this, it is necessary to highlight the desired entry using the “up” and “down” keys and then pressing “ok” to conrm the selection. Pressing “back” takes you back to the initial screen without making any selection.

BOILER

STATE

MAIN ZONE

2.6.1 Boiler

This function can be selected in order to set the boiler’s status, by choosing one of the following options:

- OFF

- SUMMER

- WINTER.

The highlighted status is that which is currently selected. In order to select a different status highlight it using the “up” and “down” keys and then press “ok” to conrm the selection. Once the selection has been validated, the display returns to the STAT E screen. Press “back” to return to the start screen without making any selection.

OFF

SUMMER

BOILER

WINTER

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

SUMMER: if SUMMER is selected, the system produces domestic hot water. Heating is disabled.

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

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2.6.2 Main zone

Selecting this function allows you 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

ZONE ON

MAIN

ZONE OFF

- if the embedded time clock has been enabled:

- AUTO

- MANUAL

- HEAT OFF.

AUTO

MANUAL

MAIN

HEAT OFF

In order to select a different status highlight it using the “up” and “down”keys and confirm the selection by pressing “ok”. Once the selection has been validated, the display returns to the STAT E screen. Press “back” to return to the S TATE screen without making any selection.

ON: if 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: if you want 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.

2.7 SET

With the SET function it is possible to congure the HEATING,

HOT WATER and PREHEATING setpoints. To do this, it is necessary to highlight the desired entry using the “up” and “down” keys and then pressing “ok” to conrm the selection. Pressing “back” takes you back to the initial screen without making any selection.

HEATING

SET

HOT WATER

PREHEATING

2.7.1 Heating

Press the “up” and “down” keys to change the heating

setpoint temperature and conrm the selection by pressing

“ok”. Press “back” to return to the SET screen without making any selection.

SET

HEATING

78,0

°C

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 using the “up” and “down” keys, and confirm the selection pressing “ok”.

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.

SET

THE PARAMETER

WILL BE CHANGED

CONFIRM CANCEL

CONFIRM OR DELETE

SELECTION

2.7.2 Hot water

Press the “up” and “down” keys to change the boiler’s domestic hot water setpoint. Press “ok” to conrm the selection. Press “back” to return to the SET screen without making any selection.

SET

HOT WATER

58,0

°C

The user is then asked to conrm the setpoint setting: select

CONFIRM or else CANCEL using the “up” and “down” keys

and conrm with “ok”. Once the selection is conrmed, the display returns to the

previous SET screen. If the selection is cancelled or the “back” key is pressed you return to the SET screen.

SET

THE PARAMETER

WILL BE CHANGED

CONFIRM OR DELETE

SELECTION

CONFIRM CANCEL

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2.7.3 Preheating

This function keeps the water in the domestic hot water exchanger hot, to reduce standby times when a request is made. When the preheating function is enabled, the symbol P comes on with a steady light at the top of the domestic hot water icon. During burner ignition following a preheating request, the symbol P starts flashing. It is possible to access the PREHEATING function selecting SET on the main screen of the REC10. Setting PREHEATING = 1 the boiler’s domestic hot water function activates. To deactivate the preheating function, set the parameter to PREHEATING = 0, the symbol P switches off. The function is not active when the boiler is OFF.

TERMOSTATI SAN

PREHEATING

THE PARAMETER

WILL BE CHANGED

CONFIRM CANCEL

CONFIRM OR DELETE

SELECTION

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.

Press the “up” and “down” keys to go through the list of information available, in this order:

- SCREED HEATER OPERATING HOURS (*)

- CH PROBE

- RETURN PROBE

- DHW PROBE

- EXHAUST PROBE

- OUTDOOR TEMPERATURE SENSOR (*)

- EXT T FOR THERMOREG (*)

- FLOWMETER

- FAN SPEED

- ZONE 1 DELIVERY (*)

- ZONE 2 DELIVERY (*)

- EXHAUST PROBE HOURS

- MAIN ZONE SET-POINT

- SET MAIN ZONE

- ZONE 2 SET-POINT (*)

- WATER PRESSURE.

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

2.9 MENU

Using the MENU it is possible to access the conguration of

the SETTINGS and the TIME SCHEDULE (available only if the embedded timer is enabled (POR=1). To do this, it is necessary to highlight the desired entry using the “up” and “down” keys and then pressing “ok” to conrm the selection.

Pressing “back” takes you back to the initial screen without making any selection.

MON

18/11/2013 12:17

SETTINGS

SELECT OPTION

TIME SCHEDULE

2.9.1 Settings

Select this function to modify the following settings:

- TIME AND DATE

- LANGUAGE

- BACKLIGHT.

To access the desired setting, it is necessary to highlight it using the “up” and “down” keys and then pressing “ok” to

conrm the selection.

Press “back” to return to the start screen without making any selection.

TIME & DATE

LANGUAGE

SETTINGS

SELECT OPTION

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.

12 17:

ENTER TIME AND DATE

TIME & DATE

USE THE ARROWS TO MODIFY

18 / 11 / 2013

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.

ENGLISH

LANGUAGE

SELECT LANGUAGE

ITALIANO

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BACKLIGHT

The screen saver display (backlight off) 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 ef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).

: 30 days

05:11

OPTIMUM EFFICIENCY

°C

: 30 days

2.9.2 Time schedule

This function can only be selected if the embedded clock has been enabled (POR=1), it is possible to change the following:

- MAIN.

To access the desired timer programme, it is necessary to highlight the relevant zone, e.g. MAIN, using the “up” and “down” keys and then pressing “ok” to conrm the selection. Press “back” to return to the start screen without making any selection. For a detailed description of the scheduled programming timer, please refer to the section

“2.10 TIME SCHEDULE”

MON

18/11/2013 12:17

MAIN

SCHEDULE

SELECT THE ZONE

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.

SELECT

A DAY

START

MAIN

THURSDAY

07:30 11:30 18:00

END

08:30 13:30 22:30

ZONE SCHEDULE

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.

2.10.1 Add

This function serves to add a new time frame to the selected day (up to a maximum of 4). Press “ok” to select the function, after having highlighted it (if necessary) using the “up” and “down” keys.

START

MAIN

ADD

THURSDAY

MODIFY

DELETE

COPY

07:30 11:30 18:00

END

08:30 13:30 22:30

SELECT OPTION

Press the “up” and “down” keys to increase or decrease by 30 minutes the start time and press “ok” to conrm the selection.

START

MAIN

THURSDAY

ADD

PERIOD

ENTER

START TIME

14:00

07:30 11:30 18:00

END

08:30 13:30 22:30

USE THE ARROWS TO MODIFY

Press the “up” and “down” keys to increase or decrease by 30 minutes the end time and press “ok” to conrm the selection.

START

MAIN

THURSDAY

ADD

PERIOD

ENTER

END TIME

15:00

07:30 11:30 18:00

END

08:30 13:30 22:30

USE THE ARROWS TO MODIFY

14:00

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

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

MAIN

USE THE ARROWS TO MODIFY

START

THURSDAY

07:30 11:30

14:00

END

08:30 13:30

15:00

18:00 22:30

ADD

MODIFY

DELETE

COPY

2.10.2 Modify

This function serves to edit a time frame already present for the selected day. Press “ok” to select the function, after having highlighted it (if necessary) using the “up” and “down” keys.

START

MAIN

ADD

THURSDAY

MODIFY

DELETE

COPY

07:30 11:30 18:00

END

08:30 13:30 22:30

SELECT OPTION

Press the “up” and “down” keys to select the desired time band and press “ok” to conrm the selection.

START

MAIN

THURSDAY

SELECT

PERIOD TO

MODIFY

07:30

11:30 18:00

END 08:30

13:30 22:30

USE THE ARROWS TO MODIFY

Press the “up” and “down” keys to increase or decrease by 30 minutes the start time and press “ok” to conrm the selection.

START

MAIN

THURSDAY

11:30

07:30

11:30

18:00

END

08:30

13:30

22:30

USE THE ARROWS TO MODIFY

ENTER

START TIME

Press the “up” and “down” keys to increase or decrease by 30 minutes the end time and press “ok” to conrm the selection.

START

MAIN

THURSDAY

14:00

07:30

11:30

18:00

END

08:30

13:30

22:30

USE THE ARROWS TO MODIFY

ENTER

END TIME

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.

START

MAIN

THURSDAY

SELECT

PERIOD TO

MODIFY

07:30

11:30 18:00

END 08:30

14:00 22:30

USE THE ARROWS TO MODIFY

2.10.3 Delete

This function serves to delete a time frame already present for the selected day. Press “ok” to select the function, after having highlighted it (if necessary) using the “up” and “down” keys.

START

MAIN

THURSDAY

07:30 11:30 18:00

END

08:30 13:30 22:30

SELECT OPTION

ADD

MODIFY

DELETE

COPY

Press the “up” and “down” keys to select the desired time band and press “ok” to conrm the selection.

START

MAIN

THURSDAY

SELECT

PERIOD TO

DELETE

07:30

11:30 18:00

END 08:30

13:30 22:30

USE THE ARROWS TO MODIFY

To conrm or cancel the selection made, highlight the corresponding option and conrm it by pressing “ok”. 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

MAIN

THURSDAY

ARE YOU SURE

TO DELETE

THE PERIOD ?

END

CONFIRM OR DELETE SELECTION

07:30

11:30

18:00

08:30

13:30

22:30

CONFIRM

CANCEL

Page 10

2.10.4 Copy

This function serves to copy the same scheduled programme for other days of the week. Press “ok” to select the function, after having highlighted it (if necessary) using the “up” and “down” keys.

START

MAIN

THURSDAY

07:30 11:30 18:00

END

08:30 13:30 22:30

SELECT OPTION

ADD

MODIFY

DELETE

COPY

Press the “up” and “down” keys to select the day on which to copy the hourly schedule to and press “ok” to conrm the selection.

CONFIRM

MON TUE WED THU

SAT SUN

FRI

MAIN

SELECT DAYS ON WHICH YOU WANT

TO COPY SCHEDULE OF THURSDAY

USE THE ARROWS TO MODIFY

The day will be highlighted and others can be selected using the same procedure. When nished highlight CONFIRM and press “ok”.

CONFIRM

MON TUE WED THU

SAT SUN

FRI

MAIN

SELECT DAYS ON WHICH YOU WANT

TO COPY SCHEDULE OF THURSDAY

USE THE ARROWS TO MODIFY

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.

MAIN

SCHEDULE OF THURSDAY

WILL BE COPIED ON THE DAYS :

TUESDAY

USE THE ARROWS TO MODIFY

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.

FRI

18/05/2013 12:17

INFO SET

PLANT

HOT WATER TEMPERATURE

STATE

°C

Boiler faults list

ERROR

CODE

ERROR MESSAGE RED LED GREEN LED RED and GREEN

DESCRIPTION OF

ALARM TYPE

E010 ame lockout/ACF electronic fault ON nal

E011 extraneous ame

ashing

0.2 sec. on/0.2 off

temporary

E020 limit thermostat

ashing

0.5 sec. on/0.5 off

nal

E030 fan fault ON nal

E040 water transducer - check system water pressure ON nal

E041 water transducer - check system water pressure

ashing

0.5 sec. on/0.5 off

temporary

E042 water transducer fault ON nal

E060 domestic hot water probe fault

ashing

0.5 sec. on/0.5 off

temporary

E070

fault ow sensor

overtemperature ow sensor

ow/return sensor differential alarm

temporary

nal nal

E077 main zone water thermostat ON temporary

E080

fault return line probe

return line probe overtemperature

outlet/return line probe differential alarm

temporary

nal nal

E090

fault ue gases probe

ue gases overtemperature probe

ashing

0.5 sec. on/0.5 off

temporary

nal

E091 clean primary heat exchanger

ashing

0.5 sec. on/0.5 off

temporary

Page 11

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 10 min during

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

pressure is between 1 and 1.5 bar.

E041

WATER TRANSDUCER

LOAD THE SYSTEM

List of combustion faults

ERROR

CODE

ERROR MESSAGE

LED RED

LED

GREEN

DESCRIPTION OF TYPE OF ALARM

E021 iono alarm ON

These are temporary alarms that if they occur 6 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 not possible to release the alarm before the end of the post-purging

unless the boiler’s power supply is switched off.

E022 iono alarm ON

E023 iono alarm ON

E024 iono alarm ON

E067 iono alarm ON

E088 iono alarm ON

E097 iono alarm ON

E085 combustion fault/high CO ON

These are temporary alarms that if they occur 3 times in an hour they

become denitive; the last error to occur is displayed and is followed by a

post-purging of 5 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 off.

E094 combustion fault/high CO ON

E095 combustion fault/high CO ON

E058 mains voltage fault ON

These are temporary faults that restrict the ignition cycle.

E065 current modulation alarm ON

E086 obstruction fumes alarm ON

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

Warning lights

BOILER STATUS RED LED GREEN LED RED and GREEN NOTES

Power-on

ashing

0.5 sec. on/0.5 sec. off

The red and green LEDs come on at the same time

Vent cycle

ashing

0.5 sec. on/1 sec. off

ashing

0.5 sec. on/1 sec. off

The red and green LEDs come sequentially one at a time

OFF status

ashing

0.3 sec. on/0.5 sec. off

No heat request (stby)

ashing

0.3 sec. on/0.5 sec. off

Transitional ignition/

overtemperature

ashing

0.3 sec. on/0.5 sec. off

Presence of ame ON

Chimney sweep ON Only if the ame is present

Screed heater

ashing

1 sec. on/1 sec. off

ashing

1 sec. on/1 sec. off

The red and green LEDs come on alternately

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

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.

-- water pressure low - verify the system pressure

ashing

0.5 sec. on/0.5 off

temporary

-- water pressure high check system

ashing

0.5 sec. on/0.5 off

temporary

-- boiler board communication lost ON temporary

-- BUS 485 communication lost ON temporary

Page 12

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

E020

LIMTIT 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 REC10, after which the machine must be disconnected from the power supply to reset the number of attempts available.

Request the intervention of the Technical Assistance Centre.

E020

LIMIT THERMOSTAT

REC10 ATTEMPTS EXHAUSTED

3. HOW TO...

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.

BOILER

OFF

SUMMER

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;

- 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 REC10 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.

BOILER

OFF

SUMMER

WINTER

OFF

Page 13

4.1 WHAT IF I SUSPECT A GAS LEAK

If you suspect a gas leak, turn off 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 ofce.

4.2 WHAT IF I HAVE FREQUENTLY TO TOP-UP 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.

4. WHAT IF...

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.

control

valve

temporary

connection

control

valve

supply pipe

double

check valve

ow/return

pipe

Fig. 1

Page 14

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

The evolve has a new ACC (Active Combustion Control) system.

This new control system ensures functionality, ef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 different gas compositions, different outlet pipes lengths and

different 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 comprises a range of high-efciency combination 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 II2H3P 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 obtained online from the Vokera website. When the product reaches the end of its life it should dismantled and recycled in accordance with current requirements. Local authority waste collection facilities may offer such disposal services.

The boiler complies with basic requirements of the following Directives:

Gas directive 2009/142/EC; 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; Directive 2010/30/EU Indication by labelling of the consumption

of energy by energy-related products; Delegated Regulation (EU) No. 811/2013; Delegated Regulation (EU) No. 813/2013; Delegated Regulation (EU) No. 814/2013.

Fig. 2

General layout

1 Analogue pressure gauge 2 Drain valve 3 Diverter valve 4 DHW exchanger 5 Safety valve 6 Pump 7 Lower auto air vent 8 Return sensor 9 Burner 10 Inlet conveyor 11 Fan

12 Mixer 13 Ignition transformer 14 Top ue outlet 15 AAV hose 16 Upper auto air vent 17 Limit thermostat 18 Flow sensor 19 Ignition electrode 20 Detection electrode 21 Expansion vessel 22 Main heat exchanger 23 Pressure transducer

24 Injector 25 Gas valve 26 DHW sensor 27 Siphon 28 Flowmeter

R Heating return connection

F Heating ow connection

G Gas connection O Hot water outlet I Cold water inlet

INTRODUCTION

INSTALLATION AND SERVICING INSTRUCTIONS

R F G O I

24C - 28C 32C - 36C

R F G O I

Page 15

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

• Aluminium heat exchanger

• Electronic ignition with ame supervision

• Integral high-head pump

• Fan

• Expansion vessel

• Water owmeter

• 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 both for CH and DHW. For CH line, if the main temperature falls to 5°C, the appliance will function on minimum power until the temperature on main reaches 35°C.

Moreover if the DHW temperature falls to 5°C, the appliance

will function on minimum power until the temperature on main reaches 55°C.

• anti-block function: the anti-block function enables the pump

and divertor valve actuator 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 MODE OF OPERATION (Hot water)

When there is a request for DHW via a hot water outlet or tap, 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 maximum or will modulate output to stabilise the temperature. In the event of the appliance exceeding the desired temperature (set point) the burner will shut down until the temperature drops.

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

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

SECTION 1 - DESIGN PRINCIPLES AND OPERATING SEQUENCE

1.5 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.

Fig. 3

Expansion

vessel

Pump

Return

temperature

sensor

Main heat

exchanger

Lower

AAV

DHW heat

exchanger

Diverter

valve

Drain valve

DHW

temperature

sensor

Flow temperature

sensor

Upper AAV

Automatic

by-pass

DHW

non return

valve

return

ow

DHW

inlet

DHW outlet

Flow restrictor

DHW

owmeter

Analogue

pressure

gauge

Safety

valve

Pressure

transducer

High limit

thermostat

Page 16

SECTION 2 - TECHNICAL DATA

2.1 Central Heating evolve 24C evolve 28C evolve 32C evolve 36C

Heat input (kW) 18.00 24.00 30.00 32.00

Maximum heat output (kW) 60/80°C 17.60 23.54 29.37 31.39

Minimum heat output (kW) 60/80°C 3.61 4.19 4.74 4.99

Maximum heat output (kW) 30/50°C 19.17 25.56 31.77 34.08

Minimum heat output (kW) 30/50°C 3.99 4.58 5.26 5.28

Heat input RANGE RATED (Qn) (kW) 18.00 24.00 30.00 32.00

Minimum heat input RANGE RATED (Qm) (kW) 6.70 4.30 4.90 5.10

Minimum working pressure 0.25-0.45 bar

Maximum working pressure 2.5 bar

Minimum ow rate 350 l/h

2.2 Domestic Hot Water

Heat input (kW) 26.00 30.00 34.60 36.00

Flow Rate: ΔT35°C 10.6 12.3 14.2 14.7

Maximum inlet pressure 8 bar

Minimum inlet pressure 0.2 bar

Minimum ow rate 2 l/min

Flow regulator 9 l/min 10 l/min 12 l/min 12 l/min

2.3 Gas Pressures

Inlet pressure (G20) 20.0 mbar 20.0 mbar 20.0 mbar 20.0 mbar

Heating maximum gas rate (m3/hr) 1.90 2.54 3.17 3.38

DHW maximum gas rate (m3/hr) 2.75 3.17 3.66 3.81

Minimum gas rate (m3/hr) 0.39 0.45 0.52 0.54

Injector size (mm) 4.3 4.3 5.2 6.0

2.4 Expansion Vessel

Capacity 8 litres 9 litres

Maximum system volume 74 litres

Pre-charge pressure 1 bar

2.5 Dimensions

Height (mm) 740

Width (mm) 420

Depth (mm) 275 350

Dry weight (kg) 35 36 38 39

2.6 Clearances required for maintenance

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.

2.7 Connections

Flow & return 22mm

Gas 15mm

DHW hot & cold 15mm

Safety valve 15mm

Condense 21mm

2.8 Electrical

Power consumption CH (Watts) 54 65 79 93

Power consumption DHW (Watts) 86 89 94 103

Voltage (V/Hz) 230/50

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

External fuse 3A

2.9 Flue Details (concentric 60-100)

Maximum horizontal ue length (60/100mm) 10.0 m 10.0 m 8.0 m 6.0 m

Maximum vertical ue length (60/100mm) 11.0 m 11.0 m 9.0 m 7.0 m

2.10Efciency

SEDBUK (%) 90.16 90.30 90.21 90.30

2.11 Emissions

CO2 @ maximum output (%) (*) 9.2 9.0 9.0 9.0

CO2 @ minimum output (%) (*) 9.1 8.9 9.1 8.8

CO @ maximum output (ppm) 140 150 220 160

CO @ minimum output (ppm) 10 10 20 20

NOx rating class 6 class 6 class 6 class 6

Page 17

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:

NOTE NOTE NOTE

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

(*) Set as ambient regulator

(*) CO2 tolerance= +0.6% -1%

2.12 Fan rotations

Number of fan rotations with slow ignition (rpm) 5,500 5,500 5,000 5,000

Maximum number of heating fan rotations (rpm) 5,600 6,500 6,900 7,500

Minimum number of heating fan rotations (rpm) 1,500 1,500 1,500 1,500

Maximum number of DHW fan rotations (rpm) 7,900 7,900 7,800 8,100

Minimum number of DHW fan rotations (rpm) 1,500 1,500 1,500 1,500

Parameter Symbol evolve

24C

evolve

28C

evolve

32C

evolve

36C

Unit

Seasonal space heating energy efciency class - A A A A Water heating energy efciency class - A A A A -

Rated heat output Pnominal 18 24 29 31 kW Seasonal space heating energy efciency ηs 94 94 94 94 %

Useful heat output

At rated heat output and high-temperature regime (*) P4 17.6 23.5 29.4 31.4 kW

At 30% of rated heat output and low-temperature regime (**) P1 5.9 7.9 9.8 10.5 kW

Useful efciency

At rated heat output and high-temperature regime (*) η4 88.2 88.3 88.1 88.2 %

At 30% of rated heat output and low-temperature regime (**) η1 98.9 98.9 98.6 98.6 %

Auxiliary electricity consumption At full load elmax 28.0 37.0 40.0 31.4 W At part load elmin 14.0 14.0 14.0 10.5 W In Stand-by mode PSB 3.0 3.0 3.0 3.0 W Other parameters Stand-by heat loss Pstby 42.0 42.0 37.0 46.0 W Pilot ame energy consumption Pign - - - - W Annual energy consumption QHE 37 42 52 56 GJ Sound power level, indoors LWA 51 53 54 52 dB Emissions of nitrogen oxides NOx 46 33 41 48 mg/kWh For combination heaters

Declared load prole XL XL XXL XXL

Water heating energy efciency ηwh 87 87 85 86 %

Daily electricity consumption Qelec 0.152 0.148 0.165 0.159 kWh Daily fuel consumption Qfuel 22.216 22.411 28.358 28.227 kWh Annual electricity consumption AEC 33 32 36 35 kWh Annual fuel consumption AFC 17 17 22 22 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).

Page 18

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, car-port 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.) (call Vokera technical for advice) W From a vertical terminal to an adjacent vertical terminal 300 mm (only if both terminals are the same height)

Fig. 4

2.13 PUMP DUTY

Fig. 4 shows the ow-rate available – after allowing for pressure loss through the appliance – for system requirements. When

using this graph, apply only the pressure loss of the system.

Flow rate (l/h)

Residual head (mbar)

100

150

200

250

300

350

400

450

500

550

600

0 1 00 200 300 400 500 600 700 800 900 10 00 1100 12 00

Fig. 5

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

Page 19

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.

FRI

18/05/2013 12:17

INFO SET

PLANT

HOT WATER TEMPERATURE

STATE

°C

1.3

bar

LED

REC10

SECTION 3 - CONTROL PANEL (REC10)

This icon indicates that the OFF operating status mode has been set. Any ignition request is ignored except for the frost-protection function. The pump anti-lock, 3-way valve and frost protection functions 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.

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. The P at the top of the domestic hot water icon indicates that the boiler preheating function is enabled; the P when flashing indicates that a preheating request is in progress.

When the “embedded clock ” is enabled this icon indicates that the system heating (main zone) is in AUTOMATIC mode (the management of the heating requests follows the ON/OFF times that have been programmed). If the heating function is not enabled during the current time frame, the icon will be crossed out.

OFF This icon indicates that the system (main zone) has been set to off (not active).

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

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

Pressing the keys

“up” and “down”

it is possible to choose

from among the following options:

• PLANT: the display will indicate the temperature of the

domestic hot water sensor rather than the flow sensor of the boiler

• STATE/BOILER: enables access to choose the operating

mode of the appliance: OFF, Summer, 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 or hot water setpoint

value or to enable or disable preheating

• INFO: to view the current values or status of the various appliance inputs/sensors

• 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.

LED

Light signal indicating the operating status of the boiler. Can be red or green (see specific paragraph)

REC10

Boiler control panel

Key area

ok= confirm

back= ret

urn to the previous screen

cancel selection

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

up= allows you to choose between the options PLANT-STATE-SET-INFO-MENU and to

surf through the

submenus

scrolling upwards

down= allows you to choose between the options PLANT-STATE-SET-INFO-MENU and to

surfe through the

submenus

scrolling down

Page 20

DEFAULT VALUE

MINIMUM

VALUE

MAXIMUM

VALUE

ACCESS LEVEL

NOTES

SET

VALUE

SETTINGS

USER

TIME & DATE

USER

LANGUAGE

ITALIANO / ENGLISH USER

BACKLIGHT

5 min 1 min 15 min USER

TIME SCHEDULE

USER

MAIN

USER

Only if POR = 1

ZONE1

USER

Only if POR = 1

ZONE2

USER

Only if POR = 1

DHW

USER

DHW HEAT PUMP

USER

TECHNICAL

INSTALLER

INSTALLATION

INSTALLER

ZONES MANAGER

INSTALLER

MODIFY ZONE MAIN MAIN / ZONE1 / ZO NE2 INSTALLER

ACTUATION TYPE

ITRF05/AKM ITRF05/AK M BE16

INSTALLER

Only MAIN zo ne

REQUEST TYPE THERMOSTAT

THERMOSTAT / TEMPERATURE PROBE /

REC10 MASTER / REC10 SLAVE

INSTALLER

BE16 ADDRESS - - 1 6

INSTALLER

Only zones wit h

ACTUATION = BE16

HYDRAULIC CONF DIRECT ZONE DIRECT ZONE MIXING ZONE

INSTALLER

Only zones wit h ACTUATION = BE16

ZONE TYPE HIGH TEMP. HIGH TEMP . LOW TEMP. INSTALLER

MIN CH SET

40°C (AT)

20°C (BT)

20°C MAX CH SET INSTALLER

MAX CH SET

80,5°C (AT)

45°C (BT)

MIN CH SET

80,5°C (AT)

45°C

(BT)

INSTALLER

CHANGE NAME

INSTALLER

PI - PROPORTIONAL 5 0 99

SERVICE

Only mixing z ones with A

CTUATION=BE16

PI - INTEGRAL 10 0 99

SERVICE

Only mixing z ones with ACTUATION=BE 16

VALVE RUN 120 s ec 0 sec 240 s ec

SERVICE

Only mixing z ones with ACTUATION=BE 16

CLOSING AT POWE R ON 140 sec 0 sec 240 sec

SERVICE

Only mixing z ones with ACTUATION=BE 16

OUTLET OVER 55°C 0°C 100°C

SERVICE

Only BT zones with A CTUATION =BE16

OUTLET OVER TEST TIME 0min 0min 240min

SERVICE

Only BT zones with A CTUATION =BE16

OUTLET OVER WAIT TIME 2min VALVE RUN 240min

SERVICE

Only BT zones with A CTUATION =BE16

OUTLET OVER REST TIME 2min 0min 24 0min

SERVICE

Only

BT zones with ACT UATION =BE16

FREEZE PROT TEMP 6°C -20°C 50°C

SERVICE

Only zones wit h ACTUATION = BE16

FREEZE PROT OFFSET ZONE 5°C 1°C 20°C

SERVICE

Only zones wit h ACTUATION = BE16

FREEZE PROT T EXT 10°C 0°C 100°C

SERVICE

Only zones wit h ACTUATION = BE16

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

FACTORY SET

Page 21

MINIMUM

VALUE

MAXIMUM

VALUE

ACCESS LEVEL

NOTES

SET

VALUE

PARAMETERS

INSTALLER

TIMER OFF CH 3 m in 0 m in 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 10°C SERVICE

SP INCR LOW TEMP

0°C 0°C 6°C SERVICE

INCR COOLING SP

0°C 0°C 10°C SERVICE

PUMP DUTY CYCLE

85 41 100 SERVICE

RESET TIMERS CH

FUNC. NOT ACTIVE FUNC. NOT ACT IVE FUNCTION A CTIVE INSTALLER

DHW THERMOSTAT

RELATED RELATED ABSOLUTE

INSTALLER

Only in insta ntaneous configuration

SLIDING OUTLE T

DEACTIVATE FUNC. DEACTIVATE FUNC. AC TIVATE FUNCTION

INSTALLER

CH DELAY POST-DHW

0 0 1 SERVICE

CH DELAY TIME

6sec 1sec 255sec

SERVICE

If CH DELAY POST-DHW = 1

PRESS TRANSDUCE R

1 0 1 SERVICE

LOAD ENABLE

0 0 1

SERVICE

Only if PRESS TRANSDUCER = 1

START LOADING VALUE

0,6 0,4 1

SERVICE

Only if LOAD ENABLE = 1

PREHEATING

0 0 1

INSTALLER

Only if managed by the c ontrol board

THERMOREGULATI ON

INSTALLER

CLIMATIC CURVES

MAIN MAIN / ZONE1 / ZONE2 INSTALLER

FIXED SET POINT

80,5 °C (AT)

45 °C (BT)

MIN CH SET MAX CH SET

INSTALLER

If EXTERNAL PROBE NOT connected

NIGHT COMP FUNC. NOT ACTIV E FUNC. NOT A CTIVE FUNCTI ON ACTIVE

INSTALLER

If EXTERNAL PROBE connected

CURVE SLOPE

2,0 1,0 3,0

INSTALLER

If EXTERNAL PROBE connected,

request type

and zone type

0,4 0,2 0,8

INSTALLER

If EXTERNAL PROBE connected,

request type TA and zone ty pe

2,0 0,1 5,0

INSTALLER

If request type AMBIENT PROBE

or REC10

AMBIENT INFLUE NCE 10 0 20

INSTALLER

If request type AMBIENT PROBE

or REC10

OFFSET 20°C 20°C 40 °C

INSTALLER

If request type AMBIENT PROBE

or REC10

COOLING

18°C 4°C 20°C INSTALLER

BUILDING TYPE

5min 5min 20min

INSTALLER

Only i

f EXTERNAL PROBE connected

OUTDOOR REACTIV ITY

20 0 255

INSTALLER

Only i

f EXTERNAL PROBE connected

RANGE RATED

MAX CH MIN MAX CH INSTALLER

CALIBRATION

INSTALLER

MIN

INSTALLER

MAX

INSTALLER

MIN MAX INSTALLER

MAX CH

DEFAULT VALUE

FACTORY SET

see MULTIGAS TABLE

1500 RPM

3000 RPM

9999 RPM5500 RPM

Page 22

MINIMUM

VALUE

MAXIMUM

VALUE

ACCESS LEVEL

NOTES

SET

VALUE

SWEEPER

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-LEGIONEL LA

WEEKLY FUNCTION

F. NOT ACTIVE / DAILY FUNCTION /

WEEKLY FUNCTION

INSTALLER

VENT CYCLE

ENABLE FUN. ENABLE FUN. DISABLE FUN. SERVICE

DISABLE FUNCTION

SERVICE

ENABLE FUNCTION

SERVICE

STOP FUNCTION

INSTALLER

Only if VENT CYLCE in pro gress

EXHAUST PROBE RESET

INSTALLER

ADD WATER TANK

INSTALLER

Only in insta ntaneous configuration

WATER TANK

INSTALLER

REMOVE WATER TANK

INSTALLER

WATER TANK SETPOINT

50°C 37,5°C 60°C

INSTALLER

Only if HEAT P UMP enabled to DHW

TANK FROST PROTE CT

7°C 0°C 100°C

SERVICE

Only if HEAT P UMP enabled to DHW

TANK FR PROT OFFSET

5°C 1°C 20°C

SERVICE

Only if HEAT P UMP enabled to DHW

ADD SOLAR PLANT

INSTALLER

Only if solar system is not c onfigured

SOLAR

INSTALLER

REMOVE SOLAR PLANT

INSTALLER

T MAX TANK 60°C 10°C 130°C INSTALLER

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

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

INTEGRATION DELAY 0 min 0 min 199 mi n INSTALLER

COLLECTOR T MIN (- -) (- -) / -30°C 0°C INSTALLER

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

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

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

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

PWM COLL PUMP 0 min 0 min 30 min INSTALLER

TANK COOLING FUNC. NOT ACTIVE FUNC. NOT ACTIVE FUNCTION A CTIVE INSTALLER

SOLAR PUMP STATE OFF OFF / ON / AUTO INSTALLER

DEFAULT VALUE

FACTORY SET

Page 23

MINIMUM

VALUE

MAXIMUM

VALUE

ACCESS LEVEL

NOTES

SET

VALUE

ADD HEAT PUMP

INSTALLER

Only if heat pump not configured

HEAT PUMP

INSTALLER

REMOVE HEAT PUMP

INSTALLER

Only if heat pump configure d

USE FREE CONTACTS / USE BUS USE BUS USE BUS USE FREE CONTACTS SERVICE

ENABLE / DISABLE COOLING DEACTIVATE FUNCTION FUNCTION ACTIVE DEACTIVATE FUNCTION INSTALLER

USE FOR DHW / DON'T USE FOR DHW

DHW FUNCTION

NOT ACTIVE

DHW FUNCTION

ACTIVE

DHW FUNCTION

NOT ACTIVE

INSTALLER

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

ENABLE / DISABLE NIGHT REDUCT DEACTIVATE FUNCTION FUNCTION A CTIVE DEACTIVATE FUNCTION INSTALLER

REDUCED FREQUE NCY 100% 50% 100% SERVICE

MIN OUTDOOR TEM P 5°C -5°C 20°C INSTALLER

MIN DHW OUT TEMP 5°C -5°C 20°C INSTALLER

MIN EMERG OUT T -10°C -20°C 10°C INSTALLER

BOILER INTEGR DELAY

30min

1min

240min

SERVICE

HP INTEGR DELAY

30min

1min

240min

SERVICE

BOILER WAITING

2min

1min

60min

SERVICE

HEAT PUMP WAITING

2min

1min

60min

SERVICE

INTEGRATION OFFSET

5°C

0°C

10°C

SERVICE

WINTER SUMMER DE LAY

24h

SERVICE

WARNING VALIDATION

60sec

1sec

300sec

SERVICE

ENABLE CIRC STATE ON/ AUTO

AUTO

INSTALLER

DHW HP SETPOINT

60°C

20°C

60°C

SERVICE

DHW OFFSET

10°C

0°C

25°C

SERVICE

ENABLE ALARM HISTORY

SERVICE

ALARM HISTORY

INSTALLER

SCREED HEATING

DEACTIVATE F.

ACTIVATE F.

INSTALLER

DEACTIVATE FUNCTION

INSTALLER

ACTIVATE FUNCTION

INSTALLER

FUNCTION SETTIN GS

SERVICE

TFMIN

20°C

15°C

30°C

SERVICE

TFMAX

35°C

30°C

55°C

SERVICE

SYSTEM INFO

SERVICE

DEFAULT VALUE

FACTORY SET

COMBUSTION MONITORING

GAS TYPE

COMBUSTION OFFSET

BOILER TYPE

NG/LPG

SERVICE

A/B/C

RESTORE

RESET

Page 24

3.1 Access to the technical parameters

Through the REC10 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:

- select MENU on the initial page of the REC10 and press the key

18/05/2013 12:17

INFO SET

°C .3

FRI

STATE

PLANT

HOT WATER TEMPERATURE

1.3

bar

- keep the keys

and

pressed at the same time to

enter the

password menu (about 5 sec)

18/11/2013 12:17

FRI

SETTINGS

SELECT OPTION

- using the keys and select the value of the password to

access the INSTALLER or SERVICE authorisation level, depending on the level of the tree menu, then press the key

INSERT PASSWORD

- select TECHNICAL with the keys and , confirming the selection with the key

SETTINGS

TECHNICAL

SELECT OPTION

- access the desired menu and change/view the parameter concerned (see the menu tree on page 20).

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

Page 25

SECTION 4 - GENERAL REQUIREMENTS (UK)

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.

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.

4.3 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.

4.4 FLUE SYSTEM

In cold and/or humid weather, water vapour will condense on leaving the terminal; the effect 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 5449 Part 1 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.

4.6.6 FILLING POINT

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

during servicing etc. directly from the mains supply, is 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.

BS 5440 PART 1 FLUES BS 5440 PART 2 FLUES & VENTILATION BS 5449 PART 1 FORCED CIRCULATION HOT WATER SYSTEMS

BS 5546 INSTALLATION OF GAS HOT WATER SUPPLIES FOR DOMESTIC PURPOSES BS 6798 INSTALLATION OF BOILERS OF RATED INPUT NOT EXCEEDING 70kW BS 6891 LOW PRESSURE INSTALLATION PIPES

Page 26

ow/return

pipe

control

valve

temporary

connection

control

valve

supply

pipe

double

check valve

Make-up vessel or tank

Automatic air-vent

Non-return

valve

Stopcock

5.0 metres minimum

Heating return

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.

SECTION 4A - GENERAL REQUIREMENTS (EIRE)

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

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 I.S. 813. 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 I.S. 813. 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

Fig. 6

Fig. 7

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’.

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 an aluminium 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.

4.11 SHOWERS

If the appliance is intended for use with a shower, the shower should be thermostatically controlled and be suitable for use with a combination boiler. 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).

Page 27

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 effect 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. is 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 SHOWERS

If the appliance is intended for use with a shower, the shower should be thermostatically controlled and be suitable for use with a combination boiler.

4A.12 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.

Page 28

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).

5.4.1 FITTING THE PRE-FIXING JIG (optional)

When the position of the appliance has been decided – using the template supplied – carefully mark the position of the wall

mounting bracket/pre-xing jig and ue-hole (if applicable). Once the pre-xing jig is in place, the pipework can now be tted. Fit the pipework to sit within the pre-formed guides of the xing jig and to the required length for either a standard

wall or standoff bracket.

Once the pipes have been tted, the jig can now be removed.

SECTION 5 - INSTALLATION

1 1

2 2

4 4

Top ue

Rear ue

use position 2

Fig. 9

Fig. 8

Fig. 10

Page 29

5.5 FITTING THE FLUE

This appliance incorporates a ‘click-t’ ue connection at the top of the appliance, and also incorporates a rear-ue connection. Should the rear-ue connection be preferred, the ue outlet will require to be re-congured from a top outlet to a rear outlet.

Please refer to section 5.5.1.2 and the instructions supplied

with the rear-ue kit (code 29450133) on how to re-congure the ue outlet and how to install the rear-ue terminal.

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 29450133 Rear-ue terminal kit TBC 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.

Fig. 11

ange installed

as standard

90° bend

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 off 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.

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 offer 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 off. 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.

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 off. Ensure that the bend is correctly

Page 30

Fig. 14

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

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.

5.5.1.2 FITTINGTHEREARFLUE(g.15)(rearueoutlet

only)

Refer to g. 16 & 17 and the instructions supplied with the rearue kit (code 29450133) for details on how to re-congure the

appliance from a top outlet to a rear outlet. Using the template provided, mark and drill a 125mm hole

for the passage of the ue pipe. The hole should be drilled

LEVEL as the terminal already incorporates a fall-back to

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, attach the rear ue terminal to the appliance (using the previously retained screws) and x the telescopic terminal to

the correct length (wall thickness) ensuring that the terminal will protrude through the wall by the correct distance. Once the terminal has been adjusted to the correct length,

ensure that the ue outlet is orientated to the correct position, and then insert the xing screw (supplied) and attach the sealing strip (supplied) at the ue joint.

NOTE: If required the telescopic section that incorporates the

ue outlet can be trimmed to reduce its length.

NOTE:Theinner60mmpipeoftherearueterminalmust becutby8mmatthepointindicated(g.15pos.A).

At this point, lift the appliance and carefully insert the terminal into and through the wall, ensuring that the wall bracket engages with the corresponding holes at the top of the appliance.

A: cutting 8mm

pre-shearing

Fig.15

When reconguring the outlet from a top to a rear outlet, it is necessary to remove the ‘click-t’ connector; replace all but

one of the securing screws - using the remaining screw to

secure the top outlet cap (g. 16).

When removing the rear outlet cap; retain the 4-screws as

these are required to attach the rear-ue terminal to the appliance (g. 17).

Fig.17

Fig.16

Seal the ue assembly to the wall using cement or a suitable alternative that will provide satisfactory weatherproong. The exterior wall trim can now be tted.

Part No. Description Length

29450133 Rear ue terminal 825mm

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 off. Ensure that the connector is correctly

aligned with the ‘click-t’ and insert it into the ‘click-t’ until it

Page 31

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

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

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 CONNECTING THE GAS AND WATER

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.

5.6.1GAS(g.20)

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(g.20)

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.

5.6.3COLDWATERINLET(g.20)

The appliance is supplied with a 15mm combined stopcock and

lling valve, connect a 15mm pipe to the inlet of the stopcock

and tighten both nuts.

5.6.4HOTWATEROUTLET(g.20)

The appliance is supplied with a 15mm outlet connection, connect a 15mm pipe to the outlet connection and tighten both nuts.

5.6.5SAFETYVALVE(g.20)

Connect the safety valve connection pipe to the safety valve outlet and tighten. The discharge pipe must have a continuous fall away from the appliance to outside and allow any water to drain away thereby eliminating the possibility of freezing. The discharge pipe must terminate in a position where any water

- possibly boiling - discharges safely without causing damage or injury, but is still visible.

Fig. 20

Hot water

outlet

Cold water

inlet

stopcock

C/H return valve

C/H ow

valve

Safety valve

outlet

Gas

cock

Filling loop

5.6.6 CONDENSATE DISPOSAL

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.

Page 32

BS6798 provides comprehensive instruction and advice on all 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.

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 effect/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 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.

The appliance is supplied with a ‘D-sub’ interface, that enables

various control congurations to be connected to the appliance

without any need for the removal of the casing. NOTE: The appliance will enter a fault condition if/when the D-sub

interface is removed or incorrectly attached to the appliance. For detailed wiring information and schematic diagrams see Section 8.

D-sub Interface

- Loosen cover retaining screws (V) and remove cover.

- Refer to g. 22 and below for relevant wiring connections for

the envisaged controls regime:

- TA (5 & 6) - for use with a ‘voltage-free’ control, e.g. room

thermostat and/or clock (remove link wire)

- OT+ (13 & 14) - for use with BeSMART control

- SE (11 & 12) - for use with an external temperature sensor

- TBT (9 & 10) - for use as a fail-safe if/when an external

device fails, e.g. condensate pump.

- Make the required connections.

- Replace cover and re-tighten securing screws.

- Press and hold both tabs and insert the D-sub interface into

the D-sub socket on the appliance underside (g. 21).

- Tighten the securing screw V1.

Fig. 21

Fig. 22

TBOL

TBT

OT+

SBOL

M20

Voltage free contact input

1-2-3-4

(- A B +)

Bus 485

5-6 TA Room thermostat

(contact must be free of voltage) 7 - 8 TBOL Not used 9-10 TBT Low temperature limit thermostat 11-12 SE Outdoor temperature sensor 13-14 OT+ Open therm 15-16 SBOL Not used 17-18 X1 Not used 19-20 X2 Not used

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.

Page 33

18/05/2013 12:17

INFO SET

°C

1.5

bar

FRI

PLANT

HOT WATER TEMPERATURE

STATE

Open Therm connected

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.

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

side panels are an intrinsic part 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

s put back into service.

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 D-sub interface has a link wire inserted across the TA terminals (5 & 6); 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.

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 effective 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 ineffective/defective Earth connection.

Page 34

SECTION 6 - COMMISSIONING

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.

- D-sub interface incorrectly located (alarm code E077); ensure that the D-sub interface is located within the guide

slot (g. 21).

- 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

- refer to g. 24 and locate the hole (1) that allows access

to the shaft centre screw (a)

- insert an N2 Phillips screwdriver (b) into the screw-head,

gently push forward and turn the shaft with the screwdriver

- this will release the rotator shaft

- replace the front cover as detailed in 5.7.1 ensuring

correct seal.

Fig. 24

6.2 PROGRAMMING THE BOILER

- Position the system’s main switch to the “on” position.

- If necessary set the TIME and DATE setting the HOURS, MINUTES, DAY, MONTH and YEAR with the keys “up” and “down”, confirming the selection.

12 17:

ENTER TIME AND DATE

TIME & DATE

USE THE ARROWS TO MODIFY

18 / 11 / 2013

Note: it is possible to change the TIME and DATE 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.

Whenever the power supply to the appliance is interrupted and then restored, an automatic venting cycle is carried out lasting 2 min. To interrupt the vent cycle, carry out the procedure explained in the section

“6.3 First commissioning”

- Set the boiler to OFF from REC10 selecting the status menu and then BOILER.

18/05/2013 12:17

INFO SET

°C

1.3

bar

FRI

PLANT

HOT WATER TEMPERATURE

STATE

BOILER

MAIN ZONE

BOILER

OFF

SUMMER

WINTER

Through the REC10 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.

- Then set the parameters according to the desired operating modes.

Page 35

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 (see

also menu hierarchy on page 18).

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 & page 18) if required/ necessary.

NOTE

The ‘installer’ parameters should only be accessed and

adjusted by suitably qualied personnel.

TERMOREGOLAZIONE

PARAMETERS

INSTALLATION

THERMOREGULATION

RANGE RATED

TECHNICAL

INSTALLER

CALIBRATION

- Select from among the following options with the “up” and “down”, keys, confirming the selection.

PARAMETERS

INSTALLER

TIMER OFF CH

RESET TIMERS CH

PREHEATING

DHW THERMOSTAT

TIMER OFF CH

This parameter allows you to change the TIMER OFF

CH, regarding the delay time introduced for re-igniting the burner in the face of an off due to the heating temperature being reached. 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 with the “up” and “down”, keys confirming the selection.

TIMER OFF CH

MIN

RESET TIMERS CH

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 TIMER OFF CH. The factory setting for this parameter is FUNCTION INACTIVE, select FUNCTION ACTIVE using the keys “up” and “down”, confirming the selection for resetting the timings.

FUNCTION NOT ACTIVE

RESET TIMER CH

FUNCTION ACTIVE

INSTALLER

- DOMESTIC HOT WATER THERMOSTAT

This parameter allows you to set the type of DOMESTIC

HOT WATER THERMOSTAT.

The factory setting for this parameter is RELATED, i.e. for

domestic hot water the boiler switches off at setpoint +5°C and restarts at setpoint +4°C.

To select the ABSOLUTE values, where the boiler for

domestic hot water will still switch off at 65°C and restart at 63°C, use the keys “up” and “down”.

DHW THERMOSTAT

ABSOLUTE

INSTALLER

- PREHEATING

Setting PREHEATING = 1 the boiler’s domestic hot water

function activates. This function keeps the water in the domestic hot water exchanger hot, to reduce standby times when a request is made. When the preheating function is enabled the symbol P comes on with a steady light at the top with respect to the hot water icon. During burner ignition following a preheating request, the symbol P starts flashing.

To deactivate the preheating function, set the parameter to

PREHEATING = 0, the symbol P switches off.

The function is not active when the boiler is OFF.

TERMOSTATI SAN

PREHEATING

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 the technical parameters as explained in the section

“3.1 Access to the technical parameters”

- In sequence select INSTALLATION, ZONES MANAGER and MODIFY ZONE with the “up” and “down” keys, confirming the selection.

PARAMETERS

INSTALLATION

THERMOREGULATION

RANGE RATED

TECHNICAL

INSTALLER

CALIBRATION

Page 36

INSTALL

SENSOR CALIBRATION

INSTALLER

ZONES MANAGER

SYSTEM RESET

ADD ZONE

MODIFY ZONE

DELETE ZONE

INSTALL

INSTALLER

- Select the desired heating zone and then choose from among the options with the “up” and “down” keys, confirming the selection:

MAIN

INSTALLER

INSTALL

- 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

40°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.

6.2.3 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 section 2.10 for detailed instruction/guidance on how to access and change the default heating schedule.

18/05/2013 12:17

°C .3

1.3

bar

INFO SET

FRI

HOT WATER TEMPERATURE

STATE

PLANT

MON

SETTINGS

SELECT OPTION

TIME SCHEDULE

MON

18/11/2013 12:17

MAIN

SELECT THE ZONE

SCHEDULE

07:30 11:30 18:00

08:30 13:30 22:30

SELECT

A DAY

START

MAIN

THURSDAY

END

ZONE SCHEDULE

6.2.4 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 D-sub interface (SE terminals 11 & 12). 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.

Page 37

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 THERMOREGULATION with the “up” and “down” keys, confirming the selection.

PARAMETERS

THERMOREGULATION

RANGE RATED

TECHNICAL

INSTALLER

CALIBRATION

INSTALLATION

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]

At this point, to change the value of the previous parameters, proceed as described below:

- in sequence select THERMOREGULATION and TYPE OF BUILDING rather than REACTIVITY EXT SENSOR with the “up” and “down” keys, confirming the selection

- set the desired value with the “up” and “down” keys, confirming the selection.

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 (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 REC10 it is possible to set the selected thermoregulation curve:

- in sequence select THERMOREGULATION and CLIMATIC CURVES with the “up” and “down” keys, confirming the selection

- select the desired heating zone with the “up” and “down” keys, confirming the selection

- set the desired climatic curve with the “up” and “down” keys, confirming the selection.

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, from the TECHNICAL\ THERMOREGULATION\CLIMATIC CURVES\MAIN the NIGHT COMPENSATION function can be enabled. In this case, when the CONTACT is CLOSED, the heat 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].

T80 std systems heating temperature set

point (jumper pos.1 not inserted)

T45 oor systems heating temperature set

point (jumper pos.1 inserted)

PARALLEL NIGHT-TIME REDUCTION

DELIVERY TEMPERATURE (°C)

OUTSIDE TEMPERATURE (°C)

Riduzione notturna P ARALLELA

-20-15-10-505101520

Curva climatica GIORNO

Curva climatica NOTTE

16 °C

20 °C

DAY

temperature

curve

NIGHT

temperature

curve

DELIVERY TEMPERATURE (°C)

OUTSIDE TEMPERATURE (°C)

WEATHER COMPENSATION CURVE

20 °C

25 ° C

15 °C

-20-15-10-5051015202530

OUTSIDE TEMPERATURE (°C)

THERMOREGULATION CURVES

DELIVERY TEMPERATURE (°C)

CURVE DI TERMOREGOLAZIONE

-20

2,02,53,0

T80

T45

-15-10-505101520

Page 38

6.3 FIRST COMMISSIONING

- Carry out the procedure as detailed in section 6.1.

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

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

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

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INFO SET

°C

1.3

bar

FRI

PLANT

HOT WATER TEMPERATURE

STATE

BOILER

STATE

MAIN ZONE

BOILER

OFF

SUMMER

WINTER

- 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 2 min. When the vent cycle is in progress, all heat requests are paused 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.

X17

X14

arancione

E.R.

SW1

arancione (ES)

giallo (B)

nero (-)

rosso (+)

arancione (A)

(OT+)

(ES)

(TBT)

(RT)

REC

F= 3.15A F

230 V

blu

marrone

TSC2

blu

marrone

giallo/verde

N F

marrone

X15

blu

V Hv

verde A1)

rosso (A2)

arancione (K2)

bianco(K1)

BE20

C.S.A.

marrone

blu

combustion analysis button SW1

The vent cycle can be interrupted from the TECHNICAL menu of the REC10:

- select VENT CYCLE with the “up” and “down” keys, confirming the selection

TECHNICAL

INSTALLER

CALIBRATION

RANGE RATED

SWEEPER

THERMOREGULATION

VENT CYCLE

- select STOP FUNCTION with the “up” and “down” keys, confirming the selection.

VENT CYCLE

STOP FUNCTION

INSTALLER

DISABLE FUNCTION

ENABLE FUNCTION

The REC10 will briefly display a wait message after which you will automatically be taken to the main screen.

18/05/2013 12:17

INFO SET

°C .3

FRI

STATE

PLANT

HOT WATER TEMPERATURE

1.3

bar

SUMMER : when the operating mode is set to SUMMER (STATE>BOILER>SUMMER). The operating mode of the appliance is set to HW only. The REC10 normally displays the temperature of the domestic hot water supplied by the boiler.

BOILER

OFF

SUMMER

WINTER

WINTER / : when the operating mode is set to WINTER (STATE>BOILER>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 always display the current HW outlet temperature unless a heating request is active. In this case, the flow outlet temperature is displayed.

Page 39

BOILER

OFF

SUMMER

WINTER

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).

DHW

SET

PREHEATING

HEATING

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 section

“6.2.4 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.

6.6 ADJUSTMENT OF THE DOMESTIC HOT

WATER TEMPERATURE

To adjust the domestic hot water temperature (bath, shower, kitchen, etc.), set the DOMESTIC HOT WATER setpoint selecting SET on the main screen of the REC10 and selecting the desired value within the range [37.5°C - 60°C].

SET

HEATING

PREHEATING

DHW

6.7 “PREHEATING” FUNCTION

It is possible to access the PREHEATING function selecting SET on the main screen of the REC10. Setting PREHEATING = 1 the boiler’s domestic hot water function activates. This function keeps the water in the domestic hot water exchanger hot, to reduce standby times when a request is made. When the preheating function is enabled, the symbol P comes on with a steady light at the top with respect to the hot water icon. During burner ignition following a preheating request, the symbol P starts flashing. To deactivate the preheating function, set the parameter to PREHEATING = 0, the symbol “P” switches off. The function is not active when the boiler is OFF.

SET

HEATING

DHW

PREHEATING

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.

18/05/2013 12:17

INFO SET

°C

1.3

bar

FRI

PLANT

HOT WATER TEMPERATURE

STATE

During any heating request, the appliance will attempt to 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 off 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 section 6.14.

E010

FLAME LOCKOUT

PRESS OK RESET

Page 40

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.

If the release attempts do not restart the boiler, contact the local Technical Assistance Centre.

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

BOILER

OFF

SUMMER

WINTER

- select SCREED HEATING with the “up” and “down” keys, confirming the selection (note: SCREED HEATING is not available if the boiler is not OFF)

EXHAUST PROBE RESET

SCREED HEATING

TECHNICAL

INSTALLER

CALIBRATION

RANGE RATED

SWEEPER

- select ACTIVATE FUNCTION with the “up” and “down” keys and confirm the selection to activate the function

- select DEACTIVATE FUNCTION with the “up” and “down” keys and confirm the selection to deactivate the function.

SCREED HEATING

INSTALLER

DEACTIVATE FUNCTION

ACTIVATE 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.

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. Check the domestic hot water operation by opening a hot water tap in SUMMER or WINTER mode.

NOTE

In order to perform a combustion analysis check, you should ensure that the appliance is HOT; this can be achieved by opening a hot water outlet and letting it run for several minutes:

- checking the combustion.

BOILER

OFF

SUMMER

WINTER

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

- access the technical parameters as explained in section 8

- select SWEEPER with the “up” and “down” keys, confirming the selection

THERMOREGULATION

PARAMETERS

RANGE RATED

CALIBRATION

SWEEPER

INSTALLER

TECHNICAL

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 4.3).

Page 41

- select ACTIVATE FUNCTION with the “up” and “down” keys, confirming the selection.

SWEEPER

INSTALLER

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).

X17

E.R.

SW1

612

nero (RT)

rosa (OT+)

arancione (ES)

rosso (+)

giallo (B)

arancione (A)

nero (-)

giallo (B)

nero (-)

rosso (+)

arancione (A)

bianco (TBT)

(OT+)

(ES)

(TBT)

(RT)

REC

X11

X14

X25

TSC2

blu

marrone

giallo/verde

N F

marrone

X15

blu

V Hv

verde A1)

rosso (A2)

arancione (K2)

bianco(K1)

BE20

C.S.A.

marrone

blu

combustion analysis button SW1

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

be possible to check the combustion.

- Insert the analyser probes in the specific positions on the air distribution box, after removing screw (A) and cap of the flue gases analysis socket (B).

- Perform the combustion check verifying that the CO2 values correspond to those indicated in section-2 “Technical Data”.

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

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.

In case of a low temperature system we recommend

carrying out the efciency test by taking hot water

setting the boiler STATE to SUMMER, opening the hot water tap to full capacity and setting the temperature of the domestic hot water to the maximum.

6.13 RANGE RATED

This appliance can be ‘range-rated’ if necessary, and this function enables a bespoke maximum heat output to be set according to the specic application:

- access the technical parameters as explained in section 8

- select RANGE RATED

PARAMETERS

RANGE RATED

THERMOREGULATION

TECHNICAL

INSTALLER

CALIBRATION

INSTALLATION

- set the desired heating maximum value (rpm) with the “up” and “down” keys, confirming the selection

RANGE RATED

5100

RPM

- once the desired power is set (maximum heating) note the value onto the supplied self-adhesive label. For further checks and adjustments refer to the set value.

The calibration does not affect the boiler ignition.

The boiler is supplied with the settings indicated in the technical data (section 2). Nonetheless, it is possible to alter or limit the appliance output, according to the system requirements or the regional regulations on the combustion gas emission limits, to set that value by referring to the graphs below.

Page 42

evolve 24C

Heat output (kW)

Fan rotations (rpm)

HTG curve (Qnheating)

800

1200

1600

2000

2400

2800

3200

3600

4000

4400

4800

5200

5600

6000

6400

6800

7200

7600

8000

8400

2 4 6 8 10 12 1 4 16 18 20 22 2 4 26 28 30

Curva portata termica - giri venlatore

Caldaia Vision+ 24C PLUS

2 4 6 8 1 0 12 14 16 18 2 0 22 24 26 28 3 0

Curva portata termica - emissioni CO

Caldaia Vision+ 24C PLUS

CO emissions s.a. (p.p.m.)

Heat output (kW)

CO s.a. curve (Qnheating)

Page 43

Heat output (kW)

Fan rotations (rpm)

HTG curve (Qnheating)

800

1200

1600

2000

2400

2800

3200

3600

4000

4400

4800

5200

5600

6000

6400

6800

7200

7600

8000

8400

2 4 6 8 10 12 14 1 6 1 8 20 22 24 26 2 8 3 0

Curva portata termica - giri venlatore

Caldaia Vision+ 28C PLUS

CO emissions s.a. (p.p.m.)

Heat output (kW)

CO s.a. curve (Qnheating)

100

110

120

130

140

150

160

0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32

Curva portata termica - emissioni CO

Caldaia Vision+ 28C PLUS

evolve 28C

Page 44

Heat output (kW)

Fan rotations (rpm)

HTG curve (Qnheating)

800

200

600

000

400

800

200

600

000

400

800

200

600

000

400

800

200

600

000

400

2 4 6 8 10 12 1 4 16 18 20 22 2 4 26 28 30 3 2 34 36

Curva portata termica - giri venlatore

Caldaia Vision+ 32C PLUS

CO emissions s.a. (p.p.m.)

Heat output (kW)

CO s.a. curve (Qnheating)

100

110

120

130

140

150

160

170

180

0 2 4 6 8 10 12 14 16 18 20 22 2 4 2 6 2 8 3 0 3 2 34 36

Curva portata termica - emissioni CO

Caldaia Vision+ 32C PLUS

evolve 32C

Page 45

Heat output (kW)

Fan rotations (rpm)

HTG curve (Qnheating)

CO emissions s.a. (p.p.m.)

Heat output (kW)

CO s.a. curve (Qnheating)

evolve 36C

1200

1600

2000

2400

2800

3200

3600

4000

4400

4800

5200

5600

6000

6400

6800

7200

7600

8000

8400

8800

4 6 8 1 0 1 2 14 16 18 20 2 2 24 26 28 30 32 3 4 36 38

100

110

120

130

140

4 6 8 10 12 1 4 16 18 20 22 2 4 26 28 3 0 32 34 3 6 38

Page 46

6.14 LIGHTS AND FAULTS

In the unlikely event of appliance malfunction and/or a

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

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

INFO SET

°C

1.3

bar

FRI

PLANT

HOT WATER TEMPERATURE

STATE

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. 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 supply has been restored, further attempts at reset can be carried out.

E020

LIMIT THERMOSTAT

REC10 ATTEMPTS EXHAUSTED

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 10 min during which it is possible to open the external lling

tap until the pressure is between 1 and 1.5 bar.

E041

WATER TRANSDUCER

LOAD THE SYSTEM

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

For fault E060

The boiler is working normally, but does not provide any stability of the domestic hot water temperature that, in any event, is supplied at a temperature of around 50°C. The intervention of an engineer will be required.

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 with special kit supplied as an accessory following procedure indicated below:

- access the technical parameters as explained in section 8

- select EXHAUST PROBE RESET with the “up” and “down” keys, confirming the selection

TECHNICAL

INSTALLER

CALIBRATION

RANGE RATED

SWEEPER

THERMOREGULATION

EXHAUST PROBE RESET

- select CONFIRM to confirm the rest of the flue gases probe meter or else CANCEL to cancel the operation

THE PARAMETER

WILL BE CHANGED

CONFIRM CANCEL

CONFIRM OR DELETE

SELECTION

NOTE: the meter resetting procedure should be carried out 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:

- select INFO on the initial screen of the REC10 and press

“ok”

18/05/2013 12:17

INFO SET

°C .3

FRI

PLANT

HOT WATER TEMPERATURE

STATE

1.3

bar

- with the “up” and “down” keys select EXHAUST PROBE RESET and press “ok” to display the value of the flue gases probe meter.

Page 47

Boiler faults list

ERROR

CODE

ERROR MESSAGE RED LED GREEN LED RED and GREEN

DESCRIPTION OF

ALARM TYPE

E010 ame lockout/ACF electronic fault ON nal

E011 extraneous ame

ashing

0.2 sec. on/0.2 off

transitional

E020 limit thermostat

ashing

0.5 sec. on/0.5 off

nal

E030 fan fault ON nal

E040 water transducer - check system water pressure ON nal

E041 water transducer - check system water pressure

ashing

0.5 sec. on/0.5 off

temporary

E042 water transducer fault ON nal

E060 domestic hot water probe fault

ashing

0.5 sec. on/0.5 off

temporary

E070

fault ow sensor

overtemperature ow sensor

ow/return sensor differential alarm

temporary

nal nal

E077 main zone water thermostat ON temporary

E080

fault return line probe

return line probe overtemperature

outlet/return line probe differential alarm

temporary

nal nal

E090

fault ue gases probe

ue gases overtemperature probe

ashing

0.5 sec. on/0.5 off

temporary

nal

E091 clean primary heat exchanger

ashing

0.5 sec. on/0.5 off

temporary

-- water pressure low - verify the system pressure

ashing

0.5 sec. on/0.5 off

temporary

-- water pressure high check system

ashing

0.5 sec. on/0.5 off

temporary

-- boiler board communication lost ON temporary

-- BUS 485 communication lost ON temporary

List of combustion faults

ERROR

CODE

ERROR MESSAGE

LED

RED

LED

GREEN

DESCRIPTION OF TYPE OF ALARM

E021 iono alarm ON

These are temporary alarms that if they occur 6 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 not possible to release the alarm before the end of the post-purging

unless the boiler’s power supply is switched off.

E022 iono alarm ON

E023 iono alarm ON

E024 iono alarm ON

E067 iono alarm ON

E088 iono alarm ON

E097 iono alarm ON

E085 combustion fault/high CO ON

These are temporary alarms that if they occur 3 times in an hour they

become denitive; the last error to occur is displayed and is followed by a

post-purging of 5 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 off.

E094 combustion fault/high CO ON

E095 combustion fault/high CO ON

E058 mains voltage fault ON

These are temporary faults that restrict the ignition cycle.

E065 current modulation alarm ON

E086 obstruction fumes alarm ON

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

Warning lights

BOILER STATUS RED LED GREEN LED RED and GREEN NOTES

Power-on

ashing

0.5 sec. on/0.5 sec. off

The red and green LEDs come on at the same time

Vent cycle

ashing

0.5 sec. on/1 sec. off

ashing

0.5 sec. on/1 sec. off

The red and green LEDs come sequentially one at a time

OFF status

ashing

0.3 sec. on/0.5 sec. off

No heat request (stby)

ashing

0.3 sec. on/0.5 sec. off

Transitional ignition/

overtemperature

ashing

0.3 sec. on/0.5 sec. off

Presence of ame ON

Chimney sweep ON Only if the ame is present

Screed heater

ashing

1 sec. on/1 sec. off

ashing

1 sec. on/1 sec. off

The red and green LEDs come on alternately

Page 48

6.15 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 would 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:

- access the technical parameters as explained in section 8

- select ALARM HISTORY with the “up” and “down” keys, confirming the selection

TECHNICAL

INSTALLER

CALIBRATION

RANGE RATED

SWEEPER

EXHAUST PROBE RESET

ALARM HISTORY

- scroll through the alarm history with the “up” and “down” keys; for each alarms a sequential number is displayed, an error code and the date and time the alarm occurred.

1 - 10:30 18/11/2013

E030

FAN ANOMALY

USE ARROW KEYS

TO SEE OTHER ANOMALIES

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.

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.

BOILER

OFF

SUMMER

WINTER

6.17 SWITCHING OFF FOR LENGTHY PERIODS

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

BOILER

OFF

SUMMER

WINTER

OFF

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 reprogramming of these parameters.

- Access the technical parameters as explained in the section 8

- Select COMBUSTION MONITORING with the “up” and “down” keys, confirming the selection

VENT CYCLE

PARAMETERS

EXHAUST PROBE RESET

ALARM HISTORY

COMBUSTION MONITORING

SERVICE

TECHNICAL

Select GAS TYPE

- Set this parameter depending on the type of gas of the boiler. The values for this parameter are NG = NATURAL GAS - LPG = LPG

COMBUSTION MONITORING

COMBUSTION OFFSET

BOILER TYPE

GAS TYPE

SERVICE

- Select BOILER TYPE

- Set this parameter depending on the type of boiler as shown in the table

BOILER TYPE

SERVICE

BOILER TYPE

evolve 24C A

evolve 28C B

evolve 32C C

evolve 36C D

Page 49

- Select COMBUSTION OFFSET

- Select RESTORE

- Press OK to confirm.

COMBUSTION OFFSET

RESTORE

RESET

SERVICE

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 section

“6.18 Combustion check parameters”

Note: in case of replacement of the electrode, slight

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.

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 a proper combustion; in this context, in case of replacement, it is necessary to always ensure that it is correctly positioned

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

ame detection electrode/

ionization sensor

ame

ignition electrode

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

The ‘Iono’ electrode will degrade over a 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 efciency,

and avoid appliance malfunction.

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 off 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 ef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.

Page 50

7.1 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 ef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 suf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.

7.2 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 affects 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 in the following pages of this section.

7.2.1 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>ALARM HISTORY).

Refer to the alarm/fault codes description chart for further

information.

3. Remove the front cover (see 5.7.1) 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 5.7.1 taking notice of

the importance of ensuring that the effectiveness of the – front cover – seals are not compromised.

6. Carry out a combustion analysis as detailed in 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.

SECTION 7 - SERVICING INSTRUCTIONS

7.2.2 UNSCHEDULED MAINTENANCE

The appliance incorporates software that monitors the operating conditions of the appliance, and will record any ‘unusual usage conditions’ that will affect 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.

7.3 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.

7.4 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 appliancee.

• 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 6.3) 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.

7.4.1 APPLIANCE PCB

Carry out the component removal procedure as outlined in 7.4. Remove the appliance PCB cover as detailed in 5.7.3.

TO REMOVE AND REPLACE THE APPLIANCE PCB

Remove the 4-screws – located at each corner of the PCB – that secure the PCB to the rear of the control panel. Remove the screws and store them safely. Take note of the corresponding locations where each of the wiring plugs and terminals are connected to on the PCB, and then carefully remove each plug/terminal. Replace the PCB in the reverse

order and ret the securing screws and PCB cover. Ret the

front cover as detailed in 5.7.1.

NOTE

If a new PCB has been installed, the appliance conguration

will need to be uploaded onto the new PCB from the REC10 UI. Therefore at start-up, the UI screen will request selection

of the conguration type:

• from AKM

• from REC10.

Use the up/down buttons to highlight ‘REC10’ and press select (for detailed advice on this, refer to section 7.4.26).

Page 51

7.4.2 REC10 USER INTERFACE (UI)

Carry out the component removal procedure as outlined in 7.4. Remove the appliance PCB cover as detailed in 5.7.3.

TO REMOVE AND REPLACE THE REC10

Locate and remove the 2-screws that secure the REC10 to its aperture. From the front of the control panel, gently lever out the REC10 from its sealing aperture; and once removed, disconnect the wiring plug from the REC10. Replace the

REC10 in the reverse order and ret the securing screws and PCB cover. Ret the front cover as detailed in 5.7.1.

NOTE

If a new REC10 has been installed, the appliance conguration

will need to be uploaded onto the new REC10 from the appliance PCB. Therefore at start-up, the UI screen on the

REC10 will request selection of the conguration type:

• from AKM

• from REC10.

Use the up/down buttons to highlight ‘AKM’ and press select (for detailed advice on this, refer to section 7.4.25).

NOTE

If both REC10 and appliance PCB are replaced simultaneously, refer to the detailed guidance provided in section 8.8 and 6.18,

on how to set up a new appliance conguration.

7.4.3 ELECTRODE ASSEMBLIES

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Disconnect the electrode from its wiring connector. Each electrode assembly is retained by two securing screws (A); remove both securing screws from the relevant electrode assembly and carefully withdraw the electrode from its location – taking extreme care not to damage or bend the electrode in the process. Replace in the reverse order.

NOTE

Any damage or deterioration to the electrode seal will require it to be replaced with a new seal.

7.4.4 AIR/GAS CONVEYOR COVER

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Remove securing screws (A). Replace in the reverse order.

NOTE

Any damage or deterioration to the seal will require it to be replaced with a new seal.

7.4.5 BURNER

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Remove air/gas conveyor cover as detailed in 7.4.4. Locate and remove cylindrical burner (A). Replace in the reverse order ensuring that the seal (B) is correctly located, and that the burner (A) is also correctly located (both the seal and the burner incorporate a ‘notch’ that must be in alignment with the corresponding tab of the burner aperture).

Ret air/gas conveyor cover as detailed in 7.4.4.

7.4.6 FAN & MIXER ASSEMBLY

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Disconnect wiring from fan. Disconnect electrode leads. Disconnect outlet gas pipe (F) from the gas valve loosen nut (G), and remove locking pin (E) that secures the pipe to the fan mixer. Loosen the 4 screws (H). The entire fan mixer assembly can now be removed. Replace in the reverse order ensuring any worn or damaged seals are replaced with new ones.

7.4.7 FAN REMOVAL

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Remove the fan and mixer assembly as detailed in 7.4.6. Remove the 4-hex screws (A) that secure the fan to the air/ gas mixer assembly. Replace in the reverse order ensuring any worn or damaged seals are replaced with new ones.

Page 52

7.4.10 IGNITION TRANSFORMER

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Disconnect wiring from ignition transformer (B). Locate and remove securing screw (A). Replace in the reverse order.

7.4.11 EXPANSION VESSEL

Carry out the component removal procedure as outlined in

7.4, paying special attention to the possibility of some residual water still remaining within the vessel (with the appliance drain still open, it is possible to displace most of the residual water in the vessel by attaching a pump to the valve on the vessel and pump it out via the drain). Remove the front cover as detailed in 5.7.1. Disconnect the exible expansion pipe (D) from the bottom of the expansion vessel (H). Locate and remove the top rear securing screw (C). Locate and remove the front securing screw (C). The vessel can now be lifted out of its lower retaining bracket. Replace in the reverse order, ensuring that the vessel’s charge pressure is correct and that any worn or damaged seals are replaced with new ones.

7.4.12 DHW FLOWMETER

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Disconnect the electrical plug from the owmeter (C). Disconnect pipe (B) from the owmeter outlet and place the

ow-restrictor (D) to the side. Locate and withdraw the locking pin that secures the owmeter body to the lower frame of the appliance and lift the owmeter

away. Replace in the reverse order ensuring any worn or damaged seals are replaced with new ones.

7.4.8 PRIMARY HEAT EXCHANGER

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Disconnect wiring to fan. Detatch the wiring from the clip on the left rear side of the exchanger. Disconnect electrode leads. Loosen the 2 screws (C) and disconnect and/or remove ow pipe (D) from cyclonic separator as detailed in 7.4.6. Disconnect return pipe (A) from pump outlet. Disconnect and remove outlet gas pipe (F) as detailed in 7.4.6. Disconnect condensate pipe (B) from the bottom of the exchanger (C). Locate and remove the 4-securing screws (D) that secure the exchanger to the appliance back frame. Gently withdraw the entire fan/mixer & heat exchanger assembly from the appliance. Carefully replace the assembly in the reverse order paying attention to aligning the rear outlet of the exchanger with the

corresponding inlet of the ue gas conveyor and ensuring no

pipes or wiring is trapped between the exchanger and the appliance back frame. Replace any worn or damaged seals where necessary.

7.4.9 FLUE GAS CONVEYOR

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Remove the fan/mixer & heat exchanger assembly as detailed in 7.4.8. Disconnect tubing from the top AAV at the conveyor. Disconnect the condensate tubing (A) from the bottom of the conveyor (D). Locate and remove the 3-securing screws (C) and withdraw the conveyor. Replace in the reverse order ensuring any worn or damaged seals are replaced with new ones.

Page 53

Replace in the reverse order ensuring that the 4-ports of the heat exchanger are correctly aligned with the corresponding ports of the hydraulic manifolds. Replace any worn or damaged seals with new ones.

7.4.15.1 PUMP HEAD

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Disconnect both electrical plugs on the pump head. Unscrew the 4 retaining screws (A) that secure the pump head to the pump body (use a 4mm allen key or t-bar) and remove the pump head. Replace in the reverse order.

7.4.15.2 LOWER AAV

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Locate and remove the locking pin (B) that secures the exible expansion pipe to the pump body; then remove the pipe from its aperture. Locate and pull out locking pin (G) until it touches the edge of the safety valve pipe. Apply rm pressure around the AAV (H) in order to free it from its aperture within the pump body. Replace in the reverse order ensuring that the AAV is orientated as shown in the diagram; and ensure that the AAV is fully inserted and clicks into it’s aperture. NOTE: the locking

pin for the exible expansion pipe can only be inserted one

way, with the straight leg to the right. Replace any worn or damaged seals with new ones.

7.4.15.3 PUMP ASSEMBLY

Disconnect the return pipe from the pump outlet. Disconnect the electrical plugs from the pump head. Extract the locking pin (E) from the base of the pump body (F). Remove locking pin (B) from the top right of the pump body. Locate and remove securing screws (D). Gently lift the pump assembly upwards then outwards, then remove locking pin (C) from the top left of the pump body, before removing the assembly from the appliance. Replace in the reverse order. Replace any worn or damaged seals with new ones.

7.4.13 CONDENSATE TRAP

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. The condensate trap can be removed from the right hand side if/when there is a minimum of 50mm clearance to the side of

the appliance. This method of removal is signicantly quicker.

The following method of removal assumes that there is

insufcient clearance to the right-side of the appliance.

NOTE

Ensure that the appliance/components are protected from any residual water that may still remain within the expansion vessel. Disconnect the gas valve as detailed in 7.4.21. (NOTE: it is not necessary to remove the electrical wiring to the gas valve), and move it to the side.

Disconnect the DHW pipe at the outlet of the DHW owmeter. Disconnect the exible pipe from the bottom of the expansion

vessel. Disconnect the three rubber tubes (A) that are connected to the condensate trap. Disconnect pipe (C) that is connected to the condensate outlet (located beneath the appliance). Remove the locking pin (B) at the condensate outlet that secures the condensate trap to the lower frame of the appliance. The condensate trap can now be lifted and removed from its location. Replace in the reverse order, ensuring any worn or damaged seals are replaced with new ones.

7.4.14 DHW HEAT EXCHANGER

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Remove the condensate trap as detailed in 7.4.13. Locate and unscrew both securing screws (A). Move the heat exchanger (B) sideways to the right and then lift it out from the appliance (NOTE: the heat exchanger can

only be tted in one way; pay attention to its orientation when

you are removing it, and ensure that it’s replaced in the exact same way).

Page 54

7.4.16 BYPASS/NON RETURN VALVE

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Remove locking pin as shown in the diagram. Using a hooked piece of wire or similar; insert the hook into the AB and/or NRV and engage the hook in order to extract the item/s. Replace in the reverse order; ensuring that any worn or damaged seals are replaced with new ones.

7.4.17 DIVERTER VALVE CARTRIDGE

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Remove locking pin (A) and extract the complete cartridge/ actuator assembly (B). Replace in the reverse order ensuring correct orientation and alignment.

7.4.18.1 DEGASSING UNIT

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Detach the rubber tube (A) that connects to the AAV (E). Locate and remove the locking pin (C).

Using rm steady pressure, extract the AAV from its aperture

Replace in the reverse order. NOTE: The AAV must be inserted as shown in the diagram.

The rubber O’ring seal should be placed over the AAV and smeared with some silicone grease. The AAV should ‘click’ when correctly inserted into its aperture.

7.4.18.2 CYCLONIC SEPERATOR

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Remove both locking pins that secure the inlet and outlet pipes to the separator (D). Slacken - but do not remove - both screws that secure the outlet pipe on the main heat exchanger (allowing the pipe to rotate freely). Gently prize apart the inlet/outlet pipes from the separator until it is free. Detach the rubber tube (A) that connects to the AAV. Replace in the reverse order ensuring that any worn or damaged seals are replaced with new ones.

7.4.19.1 PRESSURE TRANSDUCER

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Locate and remove locking pin (A). Remove transducer (B). Disconnect plug from transducer. Replace in the reverse order.

7.4.19.2 DHW SENSOR

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Locate and remove locking pin (C). Remove sensor (D). Disconnect plug from sensor. Replace in the reverse order.

Page 55

7.4.20 SAFETY VALVE

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Disconnect safety valve outlet pipe (A) from the safety valve. Locate and remove locking pin (B) and then extract safety valve (C) from its aperture. Replace in the reverse order.

7.4.21 GAS VALVE

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Slacken off both inlet and outlet nuts (A&B). Swivel the gas valve (C) round and disconnect the electrical connections. Unscrew both A&B completely in order to remove the gas valve. Remove the nozzle (D) for use with a replacement valve if the gas valve is to be replaced. Replace in the reverse order.

NOTE: the gas valve is a non-serviceable item - DO NOT attempt to alter or adjust any of its mechanical settings. Both sealing washers must be replaced.

7.4.22 DRY CONTACT SENSORS (FLOW, RETURN, HI-LIMIT)

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Identify the sensor to be replaced. Remove the pipe clip that incorporates the sensor from its location. Disconnect both wires from the sensor. Remove the sensor from the pipe clip. Replace in the reverse order - ensuring that the sensor is correctly positioned and that some heat conduction paste has been applied to the face of the sensor.

7.4.23 ANALOGUE PRESSURE GAUGE

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. Locate and remove the locking pin that secure the pressure gauge to the pump assembly (rear left side). Ease the connection from its aperture. Locate and remove the 2-screws that secure the gauge to the underside of the appliance. The gauge incorporates a ‘bayonet’ type connection; rotate the gauge 90-degree in order to remove it from its aperture, ensuring that the gauge tubing does not get jammed or caught internally. Replace in the reverse order ensuring that any worn or damaged seal is replaced with a new one.

7.4.24 FLUE SENSOR

Carry out the component removal procedure as outlined in 7.4. Remove the front cover as detailed in 5.7.1. If required, remove the fan/mixer assembly as detailed in 7.4.6. Disconnect the electrical plug from the sensor. Unscrew the sensor from the sensor pocket. Replace in the reverse order, ensuring any worn or damaged seals are replaced with new ones.

7.4.25 REPLACING THE REC10 MASTER

The system’s configuration operations need to be carried out by professionally qualied personnel of the Technical Assistance Centre.

When replacing the REC10 MASTER, at the subsequent restart it displays an initial screen with the firmware revision. Pressing “ok” starts a guided procedure for configuring the system, see section

“6.19 System configuration”

. Follow the

procedure and carry out the FROM AKM type of configuration.

MULTI ZONE CONTROLLER

REC10 V01.26

PRESS ANY KEY

TO CONTINUE

SELECT THE TYPE

OF CONFIGURATION

NEW

FROM AKM

7.4.26 REPLACING THE AKM01 BOARD

The configuration operations should be carried out by professionally qualied personnel of the Technical Assistance Centre. The systems continually carries out a consistency control between the saved configuration data on the AKM01 electronic board and those saved in the REC10; therefore, when replacing the AKM01 electronic board, it can happen that the system detects an inconsistency between the data saved on the AKM01 and that in the REC10. In this case, the latter will ask the user which of the two configurations is to be considered valid; selecting to recuperate the configuration from the REC itself it is possible to avoid reconfiguring the machine:

- select REC10 with the “up” and “down” keys, confirming the selection.

FROM AKM

REC10

SELECT THE TYPE

OF CONFIGURATION

Page 56

7.4.27 GUIDANCE ON THE REMOVAL & REPLACEMENT OF COMPONENTS

The following table provide guidance on the removal and replacement of components from the appliance with regards to the average ‘R&R’ (Removal & Replacement) time, and the

TASK TIME (minutes) SKILL LEVEL

Burner

Fan/mixer assembly

Fan 9

Top electrode 3

Lower electrode 2

Gas valve 3

Return NTC sensor 3

Flow NTC sensor 2

High limit thermostat 2

DHW sensor 3

Ignition transformer 2

Pump head 4

Complete pump assembly 8

Pressure transducer 2

DHW ow meter 6

Safety valve 3

Diverter valve (cartridge & actuator) 2

Analogue pressure gauge 6

Non-return valve 3

Automatic bypass 3

Expansion vessel 4

Flue sensor 10

Top automatic air vent 4

Lower automatic air vent 3

Condensate trap 7

Cyclonic separator 5

DHW plate heat exchanger 10

Primary heat exchanger 12

Exhaust ue gas conveyor 12

Appliance PCB 4

REC10 User Interface 4

Front cover 1

Side cover* 1

required skill level. This guidance is based on the assumption that the removal of components will be undertaken using ‘FRONT’ access only.

*NOTE

Do not attempt removal of the side cover/s if/when there is less than 25mm clearance to the side of the appliance.

Page 57

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 sufcient system water pressure (min. 0.5 bar)

to ensure the water pressure switch is activated. If there is

insuf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 & actuator 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 off 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.

• ACTUATOR ANTI-BLOCK FUNCTION: when there has been no heating or HW request for 24-hours, the anti-block cycle

is activated. The divertor valve actuator will motor briey to

the heating position, and then back to the DHW position. The

pump will run briey.

• DHW PRE-HEAT FUNCTION: when the DHW pre-heat

function is enabled, the appliance will light periodically to maintain the temperature of the DHW heat exchanger. When the DHW thermistor and the primary thermistor fall below 35°C

and 55°C respectively, the boiler will re on minimum +25%

power until the primary thermistor exceeds 55°C. Thereafter the pump will over-run 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 off. The builtin anti-cycle device prevents the burner from re-lighting for approximately 3-minutes.

SECTION 8 - CHECKS, ADJUSTMENTS AND FAULT FINDING

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.

8.2.4 DHW MODE

The appliance will operate in the hot water mode whenever

a DHW outlet is opened. The appliance owmeter will detect

water movement (min 2L/pm) and signal a hot water request

whereupon 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 circuitry to ensure ame

stability at the burner. Once successful ignition has been achieved, the electronic circuit allows the gas rate to achieve the modulation value.

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 as described in

7.4. 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 No hot water Check pipe-work No heating Check external controls

Fault Possible cause Fault code Check gas supply, check ue

system

Page 58

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

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 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 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

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.

8.6 FAULT FINDING

Before attempting any faultnding, the electrical checks as

detailed in 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 D-sub interface.

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 the technical parameter settings as outlined in section 8

- scroll to and select the following menu string:

MENU>TECHNICAL>INSTALLATION>SYSTEM

RESET>CONFIRM

PARAMETERS

INSTALLATION

THERMOREGULATION

RANGE RATED

TECHNICAL

INSTALLER

CALIBRATION

INSTALL

SENSOR CALIBRATION

INSTALLER

ZONES MANAGER

SYSTEM RESET

CONFIRM

CANCEL

Page 59

- 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 FROM AKM (see below)

MULTI ZONE CONTROLLER

REC10 V01.26

PRESS A BUTTON

TO CONTINUE

ITALIANO

ENGLISH

12 17:

ENTER TIME AND DATE

TIME & DATE

USE THE ARROWS TO MODIFY

18 / 11 / 2013

SELECT THE TYPE

OF CONFIGURATION

NEW

FROM AKM

8.8.1 CONFIGURATION FROM AKM PCB

- Select conguration type: FROM AKM

- The REC10 will use the information/settings stored on the

AKM PCB to congure the appliance

SELECT THE TYPE

OF CONFIGURATION

NEW

FROM AKM

8.8.2 NEW CONFIGURATION

- Select conguration type: NEW

- Select location of REC10: ON BOARD

- Select PLANT type: CH ONLY – INSTANTANEOUS – STORAGE TANK (see below)

NEW

FROM AKM

SELECT THE TYPE

OF CONFIGURATION

MACCHINA

AMBIENTE

DOVE E’ POSIZIONATO

IL MULTI ZONE CONTROLLER?

CALDAIA

PLANT

CH ONLY

INSTANTANEOUS

SELECT THE PLANT

CONFIGURATION

STORAGE TANK

- select CH ONLY if the appliance is a ‘heat’ only system boiler

- select INSTANTANEOUS if the appliance is a combination boiler

- then select FLUX METER (only selectable with INSTANTANEOUS).

NOTE

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.

Page 60

PLANT

FLUX METER

FLUX SWITCH

PLANT

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 menu hierarchy tree on page 20 for further details.

8.10 TYPICAL BESMART CONNECTION

– CONNECTED TO THE ‘D-SUB’ INTERFACE

8.11 TYPICAL CONNECTION FROM REMOTE ROOM THERMOSTAT AND CLOCK – CONNECTED TO THE ‘D-SUB’ INTERFACE

Page 61

FUNCTIONAL DIAGRAM

AKM0x

X17

X14

X12

X23

X16

X21

X13

X19

X25

X11

X18

X22

X15

orange

F.S.

F2=4A T

CN1

X10

SW1

TBOL

TBT

OT+

SBOL

black (TA)

pink (OT+)

orange (SE)

red (+)

yellow (B)

orange (A)

black (-)

yellow (B) black (-) red (+)

orange (A)

white (TBT)

(OT+)

(SE)

(TBT)

(TA)

A B

REC

X11

X14

X25

M20

Voltage free contact input

brown blue

2 1

5 4

pink

blue

F= 3.15A F

230 V

blue

brown

brown (+)

blue (-)

PWM

brown

blue

brown

blue

brown

blue

GAS VALVE

1 2 43

OPEOPE

230 V

auxiliary

brown

X15

blue

F Hv

1 2

red (+)

blue (HS) pink (PWM)

grey (-)

X13

F Lv

white

F.T.

-t°

R.S.

red

-t°

F.S.

grey grey yellow

F.O.H.T.

blue blue

yellow

Not use

grey

orange (-) blue (sign.) violet (alim.)

red

black (alim.) blue (sign.) brown (-)

F.M.

D.H.W.T.

MOD

P.T.

X19

4 3 2 1

red

blue

violet

white

X12

green (A1)

red (A2)

green (A1)

orange (K2)

white (K1)

X10

BE20

TSC2

blue

brown

yellow/green

Page 62

Key

AKM0X Main PCB REC Remote control BE20 Led board:

green led (working status or temporary stop) red led (boiler lock out)

X1-X25-CN1 Connectors S.W. CO2 function button F.S. Flame sensor F External fuse 3.15A F F2 Fuse 4A T M3-M4 Terminal strip for electrical connection high

power

M20 Terminal box

(- A B +) ● Bus 485 TA ● Room Thermosat (contact must be free

of voltage)

TBOL ● Unused TBT ● Low temperature limit thermostat SE ● External sensor

OT+ ● Open therm SBOL ● Unused X1 – X2 ● Unused

P Pump PWM PWM signal OPE Gas valve solenoids 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 (NTC) RS Return thermistor (NTC) F.M. Flow meter D.H.W.T Domestic hot water temperature P.T. Pressure transducer MOD Modulator F Lv Fan signal control 3W 3 way valve stepper motor

9.1 RELATED DOCUMENTS

9.2 TECHNICAL DATA

SECTION 9 - LPG INSTRUCTIONS

BS 6798 INSTALLATION OF BOILERS OF RATED INPUT NOT EXCEEDING 60 kW BS 5449 PART 1 FORCED CIRCULATION HOT WATER SYSTEMS BS 5446 INSTALLATION OF GAS HOT WATER SUPPLIES FOR DOMESTIC PURPOSES BS 5440 PART 1 FLUES BS 5482 PART 1 DOMESTIC BUTANE & PROPANE GAS BURNERS IN PERMANENT DWELLINGS

Gas Pressures

evolve 24C evolve 28C evolve 32C evolve 36C

Inlet pressure 37.0 mbar 37.0 mbar 37.0 mbar 37.0 mbar

Maximum gas rate (CH) 1.40 (kg/h) 1.86 (kg/h) 2.33 (kg/h) 2.48 (kg/h)

Maximum gas rate (DHW) 2.02 (kg/h) 2.33 (kg/h) 2.69 (kg/h) 2.80 (kg/h)

Minimum gas rate (CH) 0.40 (kg/h) 0.47 (kg/h) 0.54 (kg/h) 0.56 (kg/h)

Minimum gas rate (DHW) 0.40 (kg/h) 0.47 (kg/h) 0.54 (kg/h) 0.56 (kg/h)

Injector size (mm) 1 x Ø 4.3 mm 1 x Ø 4.3 mm 1 x Ø 5.2 mm 1 x Ø 6.0 mm

Number of fan rotations with slow ignition 5,500 (rpm) 5,500 (rpm) 5,000 (rpm) 5,000 (rpm)

Maximum number of heating fan rotations 5,600 (rpm) 6,500 (rpm) 6,500 (rpm) 7,100 (rpm)

Maximum number of DHW fan rotations 7,900 (rpm) 7,900 (rpm) 7,500 (rpm) 8,100 (rpm)

Minimum number of heating fan rotations 2,000 (rpm) 2,000 (rpm) 1,900 (rpm) 2,000 (rpm)

Minimum number of DHW fan rotations 2,000 (rpm) 2,000 (rpm) 1,900 (rpm) 2,000 (rpm)

Emissions

NOx (max-min) 60 - 35 p.p.m. 40 - 40 p.p.m. 30 - 40 p.p.m. 40 - 50 p.p.m.

CO (max-min) 150 - 15 p.p.m. 200 - 30 p.p.m. 220 - 40 p.p.m. 200 - 20 p.p.m.

CO2 (max-min) 10.2 - 10.2 % 10.3 - 10.0 % 10.0 - 10.0 % 10.1 - 10.1 %

(*) 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. Using the REC10 UI, navigate to STATE>BOILER and select ‘OFF’.

2. Refer to Section 8 on how to access the ‘Service’ parameters, and use passkey ‘53’ to navigate to

MENU>SETTINGS>TECHNICAL>COMBUSTION-

MONITORING>GAS-TYPE

3. Scroll to ‘LPG’ and press the select button.

4. Use the ‘back’ button to return to the ‘TECHNICAL’ menu and select ‘CALIBRATION’.

5. Using the data in table 9.2, adjust the fan speed settings to the values indicated in 9.2 – 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 table 9.2 above.

NOTE

The appliance gas valve is factory set and therefore nonadjustable. 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.

Page 63

VENT CYCLE

PARAMETERS

EXHAUST PROBE RESET

ALARM HISTORY

COMBUSTION MONITORING

SERVICE

TECHNICAL

- select GAS TYPE

COMBUSTION MONITORING

COMBUSTION OFFSET

BOILER TYPE

GAS TYPE

SERVICE

- select LPG

GAS TYPE

LPG

SERVICE

The boiler DOES NOT require additional adjustments.

The boiler may only be converted by qualied staff.

After conversion apply the new rating plate contained in the kit.

Page 64

COMMISSIONING: CO AND COMBUSTION RATIO CHECK

SET BOILER TO MAXIMUM RATE

In accordance with, section 7.3, set boiler to operate at maximum rate (full load condition). Allow sufficient time for combustion to

stabilise. , insert analyser probe into air inlet sampling point.

Is O2 ≥20.6%

and CO2 < 0.2%?

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. Check that flue and flue

terminal are not obstructed.

Is O2 ≥20.6%

and CO2 < 0.2%?

CHECK CO AND

COMBUSTION RATIO AT MAXI MUM RA TE

With boiler still set at maximum rate, insert analyser probe into flue gas sampling point. Allow readings to stabilise before

Is CO less than 350ppm AND CO/CO

2 ratio less

than 0.004?

YES

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?

CHECK CO AND COMBUSTION

RATIO AT MINIMUM RATE

With boiler set at minimum rate, insert analyser probe into flue gas sampling point. Allow readings to stabilise before

recording.

Turn off appliance and

call Vokera’s technical helpline for advice. The appliance must not be commissioned until problems are identified

and resolved.

Turn off appliance and call

Vokera’s technical helpline 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

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.

YES

Is CO < 350ppm a

nd CO/CO2 ratio

ess than 0.004 ?

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.

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.

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 manufacturer’s instructions.

YES

Page 65

www.centralheating.co.uk

Benchmark Commissioning and Servicing Section

It is a requirement that the boiler is installed and commissioned to the

manufacturers instructions and the data elds on the commissioning checklist

completed in full.

To instigate the boiler guarantee the boiler needs to be registered with the manufacturer within one month of the installation.

To maintain the boiler guarantee it is essential that the boiler is serviced annually by a Gas Safe registered engineer who has been trained on the boiler installed. The service details should be recorded on the Benchmark Service Interval Record and left with the householder.

Page 66

*AllinstallationsinEnglandandWalesmustbenotiedtoLocalAuthorityBuildingControl(LABC)eitherdirectlyorthrougha

CompetentPersonsScheme.ABuildingRegulationsComplianceCerticatewillthenbeissuedtothecustomer.

www.centralheating.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manufacturer’sinstructionsandcompletethisBenchmarkCommissioningChecklistwillinvalidatethe warranty.Thisdoesnotaffectthecustomer’sstatutoryrights.

GAS BOILER SYSTEM COMMISSIONING CHECKLIST

Customername: Telephonenumber:

Address:

Boilermakeandmodel:

Boilerserialnumber:

Commissionedby(PRINTNAME): GasSaferegisternumber:

Companyname: Telephonenumber:

Companyaddress:

Commissioningdate:

To be completed by the customer on receipt of a Building Regulations Compliance Certicate*

BuildingRegulationsNoticationNumber(ifapplicable):

CONTROLS(ticktheappropriateboxes)

Timeandtemperaturecontroltoheating

Roomthermostatandprogrammer/timer Programmableroomthermostat

Load/weathercompensation Optimum start control

Timeandtemperaturecontroltohotwater Cylinderthermostatandprogrammer/timer CombinationBoiler

Heatingzonevalves Fitted Notrequired

Hotwaterzonevalves Fitted Notrequired

Thermostaticradiatorvalves Fitted Notrequired

Automaticbypasstosystem Fitted Notrequired

Boilerinterlock Provided

ALL SYSTEMS

ThesystemhasbeenushedandcleanedinaccordancewithBS7593andboilermanufacturer’sinstructions Yes

Whatsystemcleanerwasused?

Whatinhibitorwasused? Quantitylitres

Hasaprimarywatersystemlterbeeninstalled? Yes No

CENTRAL HEATING MODE measureandrecord:

Gasrate m³/hr OR ft³/hr

Burneroperatingpressure(ifapplicable) mbar ORGasinletpressure mbar

Centralheatingowtemperature °C

Centralheatingreturntemperature °C

COMBINATION BOILERS ONLY

Istheinstallationinahardwaterarea(above200ppm)? Yes No

Ifyes,andifrequiredbythemanufacturer,hasawaterscalereducerbeentted? Yes No

Whattypeofscalereducerhasbeentted?

DOMESTIC HOT WATER MODEMeasureandRecord:

Gasrate m³/hr OR ft³/hr

Burneroperatingpressure(atmaximumrate) mbar ORGasinletpressureatmaximumrate mbar

Coldwaterinlettemperature °C

Hotwaterhasbeencheckedatalloutlets Yes Temperature °C

Waterowrate I/min

CONDENSING BOILERS ONLY

Thecondensatedrainhasbeeninstalledinaccordancewiththemanufacturer’sinstructionsand/orBS5546/BS6798 Yes

ALL INSTALLATIONS

Recordthefollowing:

Atmax.rate:COppm AND CO/CO

Ratio

Atmin.rate:(wherepossible)COppm AND CO/CO

Ratio

TheheatingandhotwatersystemcomplieswiththeappropriateBuildingRegulations Ye s

Theboilerandassociatedproductshavebeeninstalledandcommissionedinaccordancewiththemanufacturer’sinstructions Ye s

Theoperationoftheboilerandsystemcontrolshavebeendemonstratedtoandunderstoodbythecustomer Yes

Themanufacturer’sliterature,includingBenchmarkChecklistandServiceRecord,hasbeenexplainedandleftwiththecustomer Yes

CommissioningEngineer’sSignature

Customer’sSignature

(Toconrmsatisfactorydemonstrationandreceiptofmanufacturer’sliterature)

www.centralheating.co.uk

Page 67

*AllinstallationsinEnglandandWalesmustbenotiedtoLocalAuthorityBuildingControl(LABC)eitherdirectlyorthrougha

CompetentPersonsScheme.ABuildingRegulationsComplianceCerticatewillthenbeissuedtothecustomer.

It is recommended that your heating system is serviced regularly and that the appropriate Service Interval Record is completed.

Service Provider

BeforecompletingtheappropriateServiceRecordbelow,pleaseensureyouhavecarriedouttheserviceasdescribedinthemanufacturer’sinstructions. Alwaysusethemanufacturer’sspeciedsparepartwhenreplacingcontrols.

SERVICE RECORD

SERVICE 01

Date:

Engineername:

Companyname:

TelephoneNo:

GassaferegisterNo:

Record:

Atmax.rate: COppm AND CO² %

Atmin.rate:

(WherePossible) COppm AND CO

Comments:

Signature

SERVICE 02

Date:

Engineername:

Companyname:

TelephoneNo:

GassaferegisterNo:

Record:

Atmax.rate: COppm AND CO² %

Atmin.rate:

(WherePossible) COppm AND CO

Comments:

Signature

SERVICE 03

Date:

Engineername:

Companyname:

TelephoneNo:

GassaferegisterNo:

Record:

Atmax.rate: COppm AND CO² %

Atmin.rate:

(WherePossible) COppm AND CO

Comments:

Signature

SERVICE 04

Date:

Engineername:

Companyname:

TelephoneNo:

GassaferegisterNo:

Record:

Atmax.rate: COppm AND CO² %

Atmin.rate:

(WherePossible) COppm AND CO

Comments:

Signature

SERVICE 05

Date:

Engineername:

Companyname:

TelephoneNo:

GassaferegisterNo:

Record:

Atmax.rate: COppm AND CO² %

Atmin.rate:

(WherePossible) COppm AND CO

Comments:

Signature

SERVICE 06

Date:

Engineername:

Companyname:

TelephoneNo:

GassaferegisterNo:

Record:

Atmax.rate: COppm AND CO² %

Atmin.rate:

(WherePossible) COppm AND CO

Comments:

Signature

SERVICE 07

Date:

Engineername:

Companyname:

TelephoneNo:

GassaferegisterNo:

Record:

Atmax.rate: COppm AND CO² %

Atmin.rate:

(WherePossible) COppm AND CO

Comments:

Signature

SERVICE 08

Date:

Engineername:

Companyname:

TelephoneNo:

GassaferegisterNo:

Record:

Atmax.rate: COppm AND CO² %

Atmin.rate:

(WherePossible) COppm AND CO

Comments:

Signature

SERVICE 09

Date:

Engineername:

Companyname:

TelephoneNo:

GassaferegisterNo:

Record:

Atmax.rate: COppm AND CO² %

Atmin.rate:

(WherePossible) COppm AND CO

Comments:

Signature

SERVICE 10

Date:

Engineername:

Companyname:

TelephoneNo:

GassaferegisterNo:

Record:

Atmax.rate: COppm AND CO² %

Atmin.rate:

(WherePossible) COppm AND CO

Comments:

Signature

Page 68

Cod. 20131172 - 09/17 - Ed. 4

Registered address:

Vokèra Ltd

Borderlake House

Unit 7 Riverside Industrial Estate

London Colney Herts AL2 1HG

[email protected]

www.vokera.co.uk

www.vokera.ie

Sales, General Enquires

T 0844 391 0999 F 0844 391 0998

Vokèra Ireland

West Court, Callan

Co Kilkenny

T 056 7755057 F 056 7755060

Vokèra Limited reserve the right to change

specication without prior notice

Consumers statutory rights are not affected.

Company Reg No: 1047779

RANGE RATED - EN 483

The max CH input of this boiler has been adjusted to_____ kW, equivalent to _____ rpm max CH fan speed.

Date___/____/____

Signature _____________________

Boiler serial number

_____________________