VOKERA CONDEXA PRO 100 M, CondexaPRO 100 S Installation & Servicing Instructions Manual

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.

CondexaPRO

Light commercial boiler

CONDEXA PRO2

MODEL FUEL CODE

CONDEXA PRO 50 M Natural gas - LPG 50-37685-12869-4 CONDEXA PRO 100 M Natural gas - LPG 50-37685-12867-0 CONDEXA PRO 100 S Natural gas - LPG 50-37685-12868-7

The

Vokera CONDEXA PRO

boilers comply with:

• Gas Appliances Directive 90/396/EEC

• Boiler Efficiency Directive 92/42/EEC

• Electromagnetic Compatibility Directive 89/336/EEC

• Low Voltage Directive 73/23/EEC.

• EN 677 standard on condensing boilers.

0085

CONFORMITY

RANGE

CONDEXA PRO 3

Dear Customer,

congratulations on your purchase of a

Vokera CONDEXA PRO

Boiler. You have chosen proven

technology based on

Vokera Ltd

experience in this field and if fully compliant with current European standards. This appliance ensures maximum comfort for an extended period, with high reliability, efficiency, quality and safety. The purpose of this manual is to provide all the information that we feel is necessary for the correct and simple installation of the boiler and must be preserved and made available as and when requested to ensure correct installation, operation and maintenance. Full warranty cover applies providing the boiler has been correctly installed, operated and commissioned by qualified personnel. The manufacturer is not liable for any damage caused by the incorrect layout or installation of the flue system.

Vokera Ltd

The Vokera CONDEXA PRO Boiler comes with a SPECIFIC WARRANTY of 24 months (parts and

labour) starting from the date of commissioning or 3 months from date of purchase which ever soo-

ner providing it has been commissioned by

Vokera or a qualified engineer and a copy of the com-

missioning certificate has been returned and filled with

Vokera Ltd.

As a result, we suggest that you contact

Vokera Service Department or a qualified engineer for

commissioning of the boiler, as described in the conditions listed on the WARRANTY CERTIFICA-

TE supplied with the boiler, which should be read with care.

WARRANTY

CONDEXA PRO4

GENERAL

General warnings page 5 Fundamental safety rules “ 5 Description of the appliance “ 6 Safety devices “ 6 Identification “ 7 Structure “ 8 Technical specifications “ 9 Accessories “ 9 Water circuit “ 10 Positioning the probes “ 11 Pumps “ 11 Wiring diagrams “ 14 Control panels “ 18 User interface “ 19

- Display mode “ 20

- Readout mode “ 20

- Setting the user parameters “ 21

- Monitor mode “ 22

- Installer programming mode “ 23

- Test mode “ 24

- Error mode “ 24

- Permanent lockout “ 24

INSTALLER

Receiving the product pag. 25 Dimensions and weight “ 25 Handling “ 26 Room where the boiler is installed “ 26 Installation in old systems or systems to be upgraded

“ 27 Installing the boiler “ 28 Water connections “ 28 Fuel connections “ 30 Flue gas outlet and combustion air intake “ 30 Electrical connections “ 33 Installing the outside probe “ 35 Filling and emptying the systems “ 36 Preparing for first start-up “ 38

TECHNICAL

Starting for the first time pag. 39 Checks during and after first start-up “ 41 Setting the functional parameters “ 45 Setting the central heating parameters “ 45 Setting the domestic hot water parameters “ 47 Setting the temperature controller “ 48 Setting the addresses for cascading configurations“54 Fault codes “ 56 List of parameters “ 58

Conversion from one type of gas to the other “ 60 Adjustments “ 62 Temporary shutdown “ 63 Shutting down for extended periods “ 63 Servicing “ 64 Cleaning the boiler and dismantling the inside components “ 64 Troubleshooting “ 69

The following symbols are used in some parts of this booklet:

bCAUTION = actions that require special care and

suitable preparation

aPROHIBITED = actions that absolutely must

NOT be carried out

This booklet, code 068464EN - Rev. 0 (09/05), contains 76 pages.

CONTENTS

CONDEXA PRO 5

aThe boiler must not be used by children or invalid

persons without supervision.

Electrical devices or appliances, such as switches, household appliances, etc. must not be used if there is the smell of gas or unburned fuel. In this case:

- ventilate the room by opening doors and windows;

- close the fuel stopcock;

- promptly contact

Vokera Ltd, your gas supplier or

other professionally qualified personnel.

aDo not touch the boiler when barefoot or with wet

parts of the body.

aNo service or cleaning operations may be perfor-

med without first having disconnected the boiler from the mains power supply, moving the main system switch to "off".

aThe safety or control devices must not be adjusted

without the authorisation and written instructions from the manufacturer of the boiler.

aThe condensate drain must not be plugged.

aDo not pull, remove or twist the electrical cables

coming out of the boiler, even if the appliance is disconnected from the mains power supply.

aThe ventilation openings in the room where the

appliance is installed must not be plugged or reduced in size and must comply with any current standards and law applicable.

aDo not expose the boiler to the elements. It is not

designed to operate outdoors and does not have sufficient frost protection systems.

aDo not switch the boiler off if the outside temperatu-

re may fall below ZERO (risk of freezing).

aDo not leave containers and flammable substances

in the room where the boiler is installed.

aThe packaging material must not be dispersed in

the environment or left within the reach of children as it is a potential source of hazard. It must be disposed of according to the legislation in force.

The use of products that operate on fuel, electricity and water requires a number of fundamental safety rules to be observed, including:

bAfter having removed the packaging, check that the

material supplied is intact and complete; if this is not the case, contact

Vokera Ltd.

bThe CONDEXA PRO Boiler must be installed by

qualified personnel as detailed under any current standards and law applicable and with the instructions provided by

Vokera in the manual supplied

with the appliance.

bThe boiler must be used for the purposes it has

been expressly manufactured.

Vokera Ltd declines

all contractual and extra-contractual liability for damage caused to persons, animals or things, due to errors in installation, control, servicing or improper use.

bIn the event of water leaks, disconnect the boiler

from the mains power supply, close the water supply and promptly notify

Vokera Ltd or other profes-

sionally qualified personnel.

bPeriodically check that the condensate drain is free

of blockages.

bPeriodically check that the operating pressure of

the water circuit when cold is

1.5 bar and less than

the maximum limit specified for the appliance. If this is not the case, contact

Vokera Ltd or other profes-

sionally qualified personnel.

bIf the boiler is not used for an extended period, the

following minimum operations must be completed:

- move the main system switch to "off"

- close the fuel cock and the water cocks on the central heating system

- empty the central heating system if there is the risk of frost.

bServicing must be performed on the boiler at least

once a year.

bThis manual is an integral part of the boiler and as a

consequence must be kept with care. If the manual is damaged or lost, contact

Vokera Ltd for another

copy.

GENERAL WARNINGS

FUNDAMENTAL SAFETY RULES

CONDEXA PRO6

The CONDEXA PRO Boiler is a wall-hung condensing boiler, for heating only, with a premix burner, made up of one or two heating units, depending on the model. The

CONDEXA PRO Boiler can be combined in a casca-

ding configuration with other heat generators to create modular heating plants made up of boilers connected to the same water circuit and with electronic controllers communicating via bus. The heat output of each heating unit reaches 48.50 kW (100%, 50°C-30°C) and can be modulated from 30% to 100%. The efficiency reaches

108.7% and the low flue gas outlet temperature allows the use of a flame-retardant polypropylene flue (class B1), with a diameter of just 50 mm and a total equivalent height of 30 metres. The versatility of the electronic board makes quick connection possible to all types of central heating and domestic hot water production systems with storage, managing three circuits operating with three different temperatures at the same time. The individual heating units in cascading configuration can be activated, as well as by simple rotation, in such a way that when a certain percentage of output is reached by the first unit, the other units start automatically, all with the same load factor. Specific accessories are available for the boiler, such as two-way valves or pumps, or devices for taking in the combustion air. These ensure adaptability to a vast range of system configurations. Other accessories include water headers and the flue gas header for cascading installations.

The

CONDEXA PRO Boiler is fitted with the following safety devices, installed on each heating unit:

Safety thermostat with automatic reset, activated if the

outlet temperature exceeds 90°C, shutting down the burner. Diagnosis in the water circuit, the minimum flow-rate of the heat exchange fluid in each heating unit is controlled by a water differential pressure switch and an electronic safety system, using an outlet probe and a return probe. The appliance goes into safety mode if there is insufficient water or circulation. Flue gas outlet safety device: the flue gas probe, located at the bottom of the exchanger, sets off an alarm in the event of high flue gas temperatures (> 80°C). In addition, the float in the drain trap prevents the flue gas from passing through the condensate drain. Fan safety device: a Hall-effect sensor constantly monitors the rotation speed of the fan.

The CONDEXA PRO

Boilers are designed for cascading connection, which allows the creation of compact and very flexible heating plants, due to the high degree of modulation.

bThe activation of the safety devices indicates a

potentially dangerous malfunction on the boiler; immediately contact

Vokera Ltd or other professio-

nally qualified personnel.

After a short wait, try restarting the boiler (see chapter on starting for the first time).

aThe boiler must never be started, even temporarily,

with the safety devices not working or having been tampered with.

bThe safety devices must be replaced by the only

using the original components supplied by the manufacturer. See the spare parts catalogue supplied with the boiler.

After having performed the repairs or replacements, check the correct operation of the boiler.

The main features of the

CONDEXA PRO Boiler are:

- premix jet burner with constant air-gas ratio

- output from 16.3 to 100 kW (models 100 M and 100 S)

- heat output up to 450 kW, by connecting up to 9 heating units in a cascading configuration, using the waterconnection kit (code 5037685135029), available separately

- maximum flue gas outlet temperature 80°C

- total flue gas outlet and combustion air intake length up to 30 m, Ø 50 mm

- quick connection of the water and gas headers (optional), with outlet on the right or left

- microprocessor control with self-diagnosis, shown on LEDs and the display

- the electronic controller can manage up to 60 heating units in cascading

- frost protection function activated according to the outside temperature and/or the temperature of the boiler

- fitted for room thermostat in the high and low temperature zones

- outside probe to enable the climate control function

- post-circulation function for the central heating and DHW circuits

- priority settable on the DHW, high or low temperature circuit

- possibility to manage two circuits with fixed set point or with climate control using two separate curves

- automatic reversal of the burner ignition order

- emergency function, which in the event of faults on the Master board still allows the Slave boards to be controlled.

DESCRIPTION OF THE APPLIANCE

SAFETY DEVICES

CONDEXA PRO 7

Models

50 M - 100 M

Models

100 S

The boilers can be identified by the:

bIf the plates or other means for clearly identifying the product have been tampered with, removed or are missing,

the installation and servicing operations will be much more difficult.

- Rating plate

This shows the technical and performance specifications.

- Packaging label

This shows the code, the serial number and the barcode.

- Gas label

This is applied on the side of the frame, and describes the type of fuel used by the boiler, and the country of destination.

Country of destination:

Type of appliance Boiler category::

II2H3+

Gas supply pressure:

G20

G30+G31

20 mbar 28-30/37 mbar

Manufacturer settings:

G20 - 20 mbar - 2H NATURAL GAS

WARNING

Carefully read the instruction manual before installing and starting the appliance.

(Laterale DX)

B23, C63

068465EN_1_E0

IDENTIFICATION

CONDEXA PRO8

1 2 3 4

6 7

1 2 3 4 1 2 3 4

6 7

14 13 12 15

17 16

14 13 12 1514 13 12 16 17

1 - Fan 2 - Combustion air intake fitting 3 - Gas valve 4 - Flue gas outlet fitting 5 - Flue gas analysis test point 6 - Outlet probe 7 - Safety thermostat 8 - SECOND combustion chamber

(models 100 M and 100 S) 9 - Return probe 10 - Condensate collection drain trap 11 - Control panel (90° rotation) 12 - Gas supply

CONDEXA PRO 50 M CONDEXA PRO 100 M - 100 S

13 - Central heating return inlet 14 - Central heating flow outlet 15 - Main switch 16 - Safety valve connection pipe 17 - Safety valve 6 bar 18 - Water differential pressure switch 19 - Drain cock 20 - Flue gas probe 21 - FIRST combustion chamber 22 - Automatic vent valve 23 - Ignition / detection electrode 24 - Panelling

STRUCTURE

CONDEXA PRO 9

ACCESSORY CODE

Flue gas header kit 5037685135005 Water connection kit for installations < 100 kW 5037685135012 Water connection kit for installations > 100 kW 5037685135029 Remote control kit 5037685135036 Two-way valve kit 5037685135043 Injection pump kit 5037685135050 Conversion kit for room-sealed operation

CONDEXA PRO 50 5037685135067

Conversion kit for room-sealed operation

CONDEXA PRO 100 5037685135074

The following accessories are available to be ordered separately.

Fuel G20 - G30 - G31 Appliance category II2H3+ Type of appliance B23 - C63 Heat input ref. HHV (min - max) 16,3 - 50 16,3 - 100 16,3 - 100 kW Heat input ref. NHV (min - max) 15 - 45 15 - 90 15 - 90 kW Useful heat output (80°/60°C) 44,2 88,30 88,30 kW Useful heat output (50°/30°C) 48,5 96,8 96,8 kW Useful efficiency ref. NHV (80°C/60°C) 98,2 kW Useful efficiency ref. NHV (50°C/30°C) 107,7 % Useful efficiency at 30% ref. NHV (50°C/30°C) 108,7 % Losses through the chimney with the burner operating 1,3 % Losses through the chimney with the burner off 0,1 % Losses through the casing (Tm=70°C ) 0,5 % Flue gas temperature Return temp. + 5 °C CO2 at minimum - maximum 8,4 - 9,4 % CO without air at minimum - maximum less than 10 - 120 p.p.m. NOx without air at minimum - maximum less than 10 - 20 p.p.m. NOx class 5 Maximum operating pressure, central heating 6 bar Maximum admissible temperature 90 °C Range of boiler water temperature settings (± 3 °C) 20-80 °C Water content 5 10 10 l Power supply 230~50 V~Hz Maximum power input 169 333 333 W Index of protection X0D IP Quantity of condensate 7,2 14,4 14,4 l/h

DESCRIPTION

CONDEXA PRO

50 M 100 M 100 S

TECHNICAL SPECIFICATIONS

ACCESSORIES

CONDEXA PRO10

Water-side pressure drop in the boiler

The CONDEXA PRO Boiler does not come with a pump, which must be installed in the system. When sizing the pump, refer to the water-side pressure drop in the boiler, as shown in the figure below.

MI RI GASSC2

7 8

SC1

Pressure drop (mbar)

Flow-rate (l/h)

1200 1100 1000

900 800 700 600 500 400 300 200 100

250 500 750 1000 1250 1500 1750 2000 2250 30002500 2750

1 - Fan 2 - Gas valve 3 - Automatic vent valve 4 - Burner 5 - Heat exchanger 6 - Condensate drain trap 7 - Drain cock 8 - Water differential pressure switch 9 - Safety valve (6 bar)

AA - Air intake SF - Flue gas outlet SC1 - Safety valve drain SC2 - Condensate drain MI - Central heating flow outlet RI - Central heating return inlet GAS - Gas supply

WATER CIRCUIT

CONDEXA PRO 11

CENTRAL HEATING

OUTLET PROBE

SAFETY THERMOSTAT

FLUE GAS PROBE

CENTRAL HEATING

RETURN PROBE

The following probes/thermostats are installed for each heating unit:

POSITIONING THE PROBES

80°C

60°C

50°C

30°C

Configuration with distribution pumps

Boiler discharge head: 7 mWC Boiler flow-rate: 2 m

/h for each heating unit.

Also consider the pressure drops in the individual circuit.

PZ1

PZ2

V2V2

THE CONDEXA PRO Boiler

does not come with a pump, which must be installed in the system.

When choosing the pump, refer to the following system diagrams.

PB - DHW pump PZ1 - Pump in zone 1

(high temperature)

PZ2 - Pump in zone 2

(low temperature)

V2 - Two-way valve

(accessory)

PUMPS

CONDEXA PRO12

80°C

60°C

50°C

30°C

Configuration with injection pumps

Boiler discharge head: 6 mWC Boiler flow-rate: 2 m

/h for each pump.

Recommended pump TYPE A for each heating unit.

PZ1

PZ2

80°C

60°C

50°C

30°C

Configuration with loop pump and valves on the heating units (*)

Boiler discharge head: 7 mWC. Boiler flow-rate: 2 m

/h for each heating unit.

Recommended: p 50 M: TYPE A; 100M/S: TYPE B; 100M+100S: TYPE C.

PZ1

PZ2

V2V2

(*) With this configuration the pump in the low temperature circuit is managed externally by a

thermostat (see parameter 34 on page 59).

PB - DHW pump PZ1 - Pump in zone 1

(high temperature)

PZ2 - Pump in zone 2

(low temperature)

P - Injection pump

(accessory)

PB - DHW pump PZ1 - Pump in zone 1 (high temperature) PZ2 - System pump V2 - Two-way valve (accessory)

CONDEXA PRO 13

Pump TYPE A

Residual head (mbar)

III

100

200

300

400

500

600

700

0 1 2 3 4 5 6 7 8 9

800

Flow-rate (m /h)

Pump TYPE B

100

200

300

400

500

600

700

0 2 4 6 8 10 12 14 16 20

1100

800

900

1000

Residual head (mbar)

Flow-rate (m /h)

Pump TYPE C

100

200

300

400

500

600

700

0 4 8 12 16 20 24 32 36 44

800

28 40

900

1000

1100

1200

Residual head (mbar)

Flow-rate (m /h)

CONDEXA PRO14

The control panel on

CONDEXA PRO

models 50 M and 100 M contains one master board and one or two slave boards,

depending on the output of the boiler. Model

100 S contain just two slave boards. If connecting a series of boilers in casca-

ding, the master board on the

CONDEXA PRO

50 M or 100 M manages all the boards on the

CONDEXA PRO

100 S boi-

lers via BUS.

CONDEXA PRO 50 M - 100 M part 1

Bus

Com.

8 7

23 22 21

Max valve

OFF

Alarm

24V

1314

Input

Analogic

NTC

Circ. 2

10 9

Circ.2

J12

4 3 2 1

J10

28 27

Pump

25 24

Pump 3

Pump

1 2

J11

NTC

1 2

NTC

4 5

Off - Max. valve

Neutral 230 Vac.

Line 230 Vac.

Earth

Line Pump 1

Neutral pump 1

Line DHW pump

Neautral DHW pump

Neutral Max. valve

Line Pompa 3

Neutral pump 3

J9 J8

J10

Fuse

3.15 A

R3 R2

342

On - Max. valve

Alarm

Common

J12

BUS J14

Ebus remote cont.

24V remote cont.

Common

Analogic Input

Common

765

R.T. circ. 1

Common

R.T. circ. 2

243

Common

Bus line with female connector for connection to another model 100S boiler.

J11

BARCODE

Climate NTC

J11 8

Common

Outlet NTC circ. 2

Outlet NTC circ. 1

Common

DHW NTC

Common

13 2

Main earth

pole

Joint with sheath

Line

Earth Neutral

MASTER

230V~50Hz

PZ1

PZ2

SZ1

SZ2

TA1TA2

J11 7

J11 6

J11 5

J11 4

J11 3

J11 2

J11 1

J11 1 J11 2 J11 3 J11 4 J11 5 J11 6

J11 7

J11 8

IACR

J12 1

J12 2

J12 3

J12 4

J12 5

J12 6

J12 7

J12 8

J12 9

J12 8

J12 7

J12 6

J12 5

J12 4

J12 3

J12 2

J12 1

J10 6

J10 5

J10 4

J10 3

J10 2

J10 1

J9 3

J9 2

J9 1

J8 2

J8 1

J10 6 J10 5 J10 4 J10 3 J10 2 J10 1

J9 3 J9 2 J9 1 J8 2 J8 1

Bus line with male connector for connection to another model 100S boiler.

WIRING DIAGRAMS

CONDEXA PRO 15

SLAVE 1

Hall sensor power

BUS 1

Main

J16

J12

4 3 2

b m

21 3

Flue gas NTC

J11

1 2

5 4

4 3

1 3

Blower (-)

Outlet NTC

Hall sensor imput

Blower (+)

Return NTC

Hall sensor common

Safety thermostat

Gas valve

1 2

BUS 2

Fuse 4A

to main earth pole

3 2 1

J15

J14

Line Neutral

Earth Earth

Earth

123

Line Neutral

Earth

SLAVE 2

IG1

EA/ER

IG2

J10

J17

to main earth pole

EA/ER

Diff. pressure switch

PB - DHW pump PZ1 - Pump in zone 1

(high temperature)

PZ2 - Pump in zone 2

(low temperature) VM - Mixing valve CR - Remote control (accessory) IA - Analogue input SB - DHW probe SZ1 - Probe in zone 1 SZ2 - Probe in zone 2 SE - Outside probe TA1 - Room thermostat in zone 1

(high temperature) TA2 - Room thermostat in zone 2

(low temperature)

or injection pump (accessories) IG - Main boiler switch IG1 - FIRST heating unit switch IG2 - SECOND heating unit switch J10/J17 - Microswitches for setting the address

(see page 54)

SYSTEM

The pumps should be connected by installing suitable contactors with manual emergency operation.

HEATING UNIT

part 2

CONDEXA PRO16

CONDEXA PRO 100 S part 1

Bus line with male connector for connection to another model 100S boiler.

L = 1500 mm

Main

BUS 1

J16

J12

a m gv

11109

4 3

1 2

J11

7 5

J6 J14

123

J15

230V~50Hz

SLAVE 1

EA/ER

IG1

SM SR

J10

J17

to main earth pole

Main earth pole

Joint with sheath

Earth

Line

Neutral

Fuse 4A

Earth

Neutral

Line

Earth

Gas valve

Safety thermostat

Diff. pressure switch

Hall sensor common

Blower (+) Hall sensor imput

Blower (-)

Hall sensor power

Flue gas NTC

Return NTC

Outlet NTC

CONDEXA PRO 17

Fuse 4A

Bus line with female connector for connection to another model 100S boiler.

to main earth pole

J12

BUS 1

L = 1200 mm

Main

J16

1 2

9 10 11

J15

J14

J11

v g

2 3

1 6 6

575

3 2 1

gv m

SLAVE 2

EA/ER

IG2

J10

J17

Line Neutral

Earth Earth Earth

Gas Valve

Safety thermostat

Diff. pressure switch

Hall sensor common

Blower (+) Hall sensor imput

Blower (-)

Hall sensor power

Flue gas NTC

Return NTC

Outlet NTC

VG - Gas valve TS - Safety thermostat PD - Water differential pressure switch SM - Outlet probe SR - Return probe SF - Flue gas probe EA/ER - Ignition/detection electrode C - Cable for connection to two-way valve or injection pump (accessories) IG - Main boiler switch IG1 - FIRST heating unit switch IG2 - SECOND heating unit switch J10/J17 - Microswitches for setting the address (see page 54)

part 2

CONDEXA PRO18

12131411 12 13

2 3 4 65 7 98 10

121314 1511 12 13

1 2 3 4 65 7 98

1411 12 13

1 - FIRST heating unit switch 2 - Button for selecting

the operating mode 3 - Reset button (Master) 4 - Boiler lockout signal 5 - Button for selecting

the parameters 6 - Display 7 - Save button 8 - Button to increase values 9 - Button to decrease values 10 - SECOND heating unit switch 11 - Slave power supply signal 12 - Slave lockout signal 13 - Reset button (Slave) 14 - Instrument panel 15 - Main boiler switch

CONDEXA PRO 50 M

CONDEXA PRO 100 M

CONDEXA PRO 100 S

CONTROL PANELS

CONDEXA PRO 19

- The domestic hot water priority function whereby when there is demand for domestic hot water, the master board can also serve the high or low temperature circuit.

- The fr

ost protection function, also active in standby, which starts the pump in the high temperature circuit and the loop pump if the temperature in the manifold falls below 5°C. If the outside probe is fitted, the pumps start if the outside temperature falls below 3°C. If after 10 minutes the temperature in the manifold is less than 5°C, one burner starts at maximum output, until the temperature in the manifold reaches 20°C. If after 10 minutes the temperature in the manifold exceeds 5°C but the outside temperature is less than 3°C, the pumps stay on until the outside temperature exceeds this value.

- The dispersion function

: the pumps in the high and low temperature circuits remain on for 5 minutes after the last burner has shut down. There is a 6 minute delay from when the burner shuts down before closing the two-way valve. When the last burner has shut down, the valve closes only when there is no demand from the room thermostat.

- The cascading function

: to manage the output delivered by the system, the minimum and maximum number of burners started can be selected.

- The bur

ner on/off control function: in both cascading modes there is a function that limits the ignition and shutdown of the burners in the event of low heating requirement.

Functional notes

The control panel on the CONDEXA PRO Boiler models 50 M and 100 M manages:

The buttons on the CONDEXA PRO 50 M and 100 M control panel have different functions in different modes. For example, the combination of two buttons corresponds to one specific function. Alternatively, a function can be activated by pressing the button briefly or by holding it for around 5 seconds.

RESET

This resets the electronic board after a permanent lockout.

MODE

This is used to enter parameter setting mode and monitor mode on the individual units.

SEL

This is used to display the operating status of the various circuits managed by the Master board.

+ and -

Permettono di aumentare o diminuire un determinato valore

MEMO

This is used to save the new values.

USER INTERFACE

CONDEXA PRO20

DISPLAY MODE

The red LED (see ref. 4 on page 18) comes on in the event of faults that cause the permanent lockout of a heating unit (normal operation is reset only by pressing the Master or Slave reset button).

The 3 digits with seven segments display the status of the system:

Status of the system Display

No central heating or DHW demand. The two digits on the right display the outlet temperature T1. E.g.: T1 = 30°C

Demand from circuit no.1 or from circuits 1 and 2 together. The two digits on the right display the outlet temp. T1. E.g.: T1 = 80°C

Demand from the DHW circuit or simultaneous operation. The two digits on the right display the outlet temp. T1 E.g.: T1 = 80°C. The decimal point after the 1st digit on the left flashes

Demand from the 2nd circuit The two digits on the right display the outlet temperature T1. E.g. T1 = 80°C.

READOUT MODE

(TEMPERATURE VALUES AND OPERATING STATUS OF THE VARIOUS CIRCUITS)

Press the "SEL" button to scroll forwards and display the values set for the individual circuits. The values listed below will be displayed in sequence when pressing the "SEL" button.

Value displayed Display

1 Outlet temperature T1 in the high temperature circuit. E.g. : T1 = 80°C

2 DHW temperature T3. E.g.: storage heater temperature = 50°C

3 Outside temperature T4. E.g. T4 = 7°C

4 Outlet temperature in 2nd circuit or low temperature circuit T6

5 Room thermostat in the 1st circuit, closed or open.

OFF = contact open ON = contact closed

6 Room thermostat in the 2nd circuit, closed or open

OFF = contact open ON = contact closed

7 0-10V analogue input

E.g. 5.5V, 10V

CONDEXA PRO 21

To exit the display of the values, press the "MEMO" button. If no operation is performed for 5 minutes, the board automatically returns to Display mode.

Value displayed Display

8 Operating status of the mixing valve

E.g.: closing, opening, standby

9 Operating status of the main pump

E.g.: pump not working, pump working

10 Operating status of the DHW pump

E.g.: pump not working, pump working

11 Operating status of the secondary pump

E.g.: pump not working, pump working

SETTING THE USER PARAMETERS

Pressing "SEL" displays the following values in sequence:

- Outlet temperature T1 in the high temperature circuit

- DHW temperature T3

- Outlet temperature in the second circuit or low temperature circuit T6.

To change the corresponding set points:

- Press "

MODE", the corresponding value will be displayed and the two digits on the right will flash.

- If the value does not need to be changed, press "

MODE" again to return to Display mode.

- If the value needs to be changed, press "

+" or "-" until reaching the desired value. Press "MEMO" to save the new value.

The value displayed will stop flashing and the display will return to Display mode.

Procedure Display

1 E.g.: Value read on the display in the high temperature circuit 80°C

2 Press "

SEL" to access Readout mode, press the button again

and scroll the first digit to 6 so as to display the set value, E.g.: 50°C

Example: changing the set point in the low temperature circuit from 50°C to 40°C

CONDEXA PRO22

If after having pressed “MODE” no change is made for 10 seconds (because the desired value is already set), the operation of the board returns to Display mode.

If after having pressed “+” or “-” no other button is pressed for at least one minute, Display mode resumes. If this hap-

pens, the new value is not saved.

Procedure Display

3 Press “MODE” 4 Press “-” to change the set point to the desired value. E.g.: 40°C.

5 Press “MEMO” to save the new value

6 After 3 seconds Display mode resumes, with the new value set.

MONITOR MODE

Press “MODE” for 5 seconds to access "Monitor" mode. This mode is used to check the operating values of each individual unit in the system (addresses from 1 to 60).

Operation Display

1 The boiler is operating with the high temperature circuit at 80°C

2 Press “

MODE” for 5 seconds. The display indicates that the values

and the operating status of unit 1 can be read.

3 Press “+” or “-” to scroll and read the values for the desired unit.

4 Pressing “

SEL” on the display shows the 1st value for the selected unit.

Pressing the "

SEL" button again displays the following values.

E.g. outlet temperature 70°C

5 To exit Monitor mode, press “

MODE”.

If within 5 minutes no button is pressed or no operation is performed, Display mode resumes.

Value Display

1 Outlet temperature E.g.: 70°C

2 Return temperature E.g.: 50°C

3 Flue gas temperature E.g.: 60°C

4 Ionisation current (index from 0 to 99)

E.g.: ionisation current index 44

Press “SEL” to display the subsequent values for the individual unit:

CONDEXA PRO 23

Value Display

5 Fan PWM signal (%).

If PWM = 100%, this corresponds to 99 on the display. E.g.: 66 %

6 Flow switch contact open/closed (not active)

E.g.: contact open

7 Pump or motorised valve on the individual unit on/off

E.g.: Pump ON E.g.: Pump OFF

8 Maximum ionisation current (range from 0 to 99) at first attempt

E.g.: maximum ionisation current 80

INSTALLER PROGRAMMING MODE

The installer parameters can be changed by entering the password (22). The password for the installer level allows access to display and change the user and installer parameters. Procedure to enter programming mode:

Procedure Display

1 E.g.: the outlet temperature T1 is 80°C

2 Press “MODE” and “MEMO”. After 5 seconds the second and third digit will flash.

3 Use “

+” and “-” to enter the first number in the password on the centre digit.

E.g.: password = X2

4 Press “MEMO” to save the second number in the password.

5 Use “

+” and “-” to enter the first number in the password on the centre digit.

E.g.: password = 22

5 Press “

MEMO” to confirm the password, if the password is wrong

the board returns to Display mode.

6 Press “

+” and “-” to scroll the parameters enabled by the password.

Press “

MODE” to start setting the parameters.

The code P-XX and the corresponding value will alternate on the display.

7 Use “

+” and “-” to change the value of the parameter.

Whenever a button is pressed, the alternating display of the parameter and the corresponding value is stopped for 5 seconds and only the value is shown.

8 Press “MEMO” to save the new value of the parameter.

To exit installer programming mode press “MEMO”.

For the complete list of parameters see page 58.

+ 53 hidden pages

VOKERA CONDEXA PRO 100 M, CondexaPRO 100 S Installation & Servicing Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual