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5

2.  GETTING STARTED

2.1  BEFORE SWITCHING ON

Before switching the appliance on, please familiarise yourself with:

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

supplies;

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

pressure;

-  any external thermostats and their functions;

-  the appliance controls.

2.2  APPLIANCE CONTROLS (see fig. 1)

The appliance controls are concealed behind the front flap 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 flows 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 configured 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 flow-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 REC10CH may require you to set the time and date (see 

“2.9 MENU”), and the appliance will enter its ‘pre-purge’ 

mode that will last for several minutes. On completion of the 

‘pre-purge’ phase, the appliance will enter its ‘standby’ mode 

unless a heating or HW request has been made. By pressing 

the 

“up”

 and 

“down”

 keys it is possible to move the selection 

of the functions in this order: PLANT - STATE - SET - INFO 

- MENU.

By pressing the 

“ok”

 key you can access the settings of the 

selected function (except for PLANT).

The 

“back”

 key is inactive (except for PLANT).

The highlighted status is that which is currently selected.

18/05/2013

12:17

MENU

INFO

SET

42

°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  configured  with  this  system  via  the 

REC10CH.

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 

configured with the REC10CH)

: PLANT - MAIN ZONE - ZONE 

1 - ZONE 2.

The TIME&DATE, DAYLIGHT SAVINGS TIME, LANGUAGE 

and BACKLIGHT settings 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

This function can be used to set these operating modes.

Select 

STATE

 

 

BOILER

 or 

MAIN ZONE

 or 

HEAT PUMP

 

(if present).

BOILER

MAIN ZONE

STATE

HEAT PUMP

Note:

 MAIN ZONE is visible in this menu only if the zone is managed 

by a room thermostat.

HEAT PUMP is only visible if a heat pump is connected to the system.

BOILER

This function can be selected in order to set the boiler’s status:

Select 

STATE

 

 

BOILER

 

 

OFF

 or 

HOT WATER ONLY

 

(SUMMER) or 

HEATING AND HOT WATER

 (WINTER).

Once the selection has been validated, the display returns to 

the 

STATE

 screen.

OFF

HOT WATER ONLY

HEATING AND HOT WATER

BOILER

OFF: 

if 

OFF

 is selected, the system enters the standby mode, 

whereby only the standby functions remain active.

SUMMER:

  if 

HOT WATER ONLY

 is selected, the system 

produces domestic hot water. Heating is disabled.

WINTER

:  if 

HEATING AND HOT WATER

 is selected, the 

system produces domestic hot water and activates the heating 

function.

MAIN ZONE

Select 

STATE

 

 

MAIN ZONE

 to set the main zone’s status, 

by choosing one of the following options:

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

-  ZONE ON: boiler responds to heating request

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

heating

-  if the embedded time clock has been enabled:

-  AUTO/MANUAL/HEAT OFF.

ZONE ON

MAIN

ZONE OFF

AUTO

MANUAL

MAIN

HEAT OFF

Once the selection has been validated, the display returns to 

the 

STATE

 screen.

ZONE ON: 

if 

ZONE ON

 is selected, the zone heating requests 

are met.

AUTO:

 if 

AUTO

 is selected, the zone heating requests will be 

managed based on the scheduled programme.

MANUAL

: if 

MANUAL

 is selected, the zone requests will be 

managed based on the selection set by the user.

HEAT OFF: 

If 

HEAT OFF

 is selected, the zone heating 

requests will be ignored.

NOTE:

 to deactivate the zone in SUMMER or in WINTER, you 

must select the required season (SUMMER or WINTER in the 

BOILER menu) and set the zone concerned to OFF.

HEAT PUMP (if present)

By selecting 

HEAT PUMP

 it is possible to enable the NIGHT 

REDUCTION. This parameter is used to reduce the noise of 

the heat pump by limiting the maximum operating frequency 

of the compressor in the time band set by the parameters 

NIGHT MODE START TIME and NIGHT MODE STOP TIME.

NIGHT MODE START TIME (if NIGHT REDUCTION is active)

This parameter is used to set the start time of the heat pump 

compressor frequency limitation band when the night reduc-

tion function is enabled. Range 00:00 - 23:30/Default 22:00.

NIGHT MODE STOP TIME (if NIGHT REDUCTION is active)

This parameter is used to set the end time of the heat pump 

compressor frequency limitation band when the night reduc-

tion function is enabled. Range 00:00 - 23:30.

ENABLE NIGHT REDUCT

HEAT PUMP

DISABLE NIGHT REDUCT

NIGHT MODE START TIME

HEAT PUMP

NIGHT MODE STOP TIME

Summary of Contents for 47-364-61

Page 1: ...d member of the Benchmark scheme which aims to improve the standards of installation and commissioning of domestic hot water systems in the UK UNICA MAX High efficiency combi boiler UNICA MAX 35C NG G...

Page 2: ...d Your UNICA MAX boiler lights electronically and does not have a pilot light In the unlikely event of a fault developing with your boiler the supply of gas to the burner will be terminated automatica...

Page 3: ...rost 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...

Page 4: ...0 23 59 USER only if NIGHT REDUCTION active 1 MENU DEFAULT VALUE FACTORY SET MINIMUM VALUE MAXIMUM VALUE ACCESS LEVEL NOTES MENU SETTINGS USER TIME DATE USER DAYLIGHT SAVINGS TIME FUNCTION ACTIVE FUNC...

Page 5: ...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 This function can be used to set these operating modes Select STATE BOILER or MA...

Page 6: ...g it compared to that automatically calculated by the electronic board you can change the COOLING setpoint by choosing the desired comfort level 5 5 within the range Then you are asked to confirm the...

Page 7: ...Pressing ok the language selection is confirmed and the display returns to the initial screen Pressing back the system returns to the SETTINGS screen without changing the system s language BACKLIGHT t...

Page 8: ...30 18 00 END 08 30 14 00 22 30 USE THE ARROWS TO MODIFY DELETE This function serves to delete a time frame already present for the selected day START MAIN THURSDAY 07 30 11 30 18 00 END 08 30 13 30 22...

Page 9: ...t exchanger temporary E099 reset attempts exhausted boiler blocked definitive not resettable water pressure low verify the system pressure temporary water pressure high check system temporary boiler b...

Page 10: ...perature 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...

Page 11: ...re 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 th...

Page 12: ...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 se...

Page 13: ...MAX 35C UNICA MAX 40C Sides 2mm Top 100mm from casing or 25mm above flue elbow whichever is applicable Bottom 100mm Front 450mm It may be necessary to remove adjacent components if component removal r...

Page 14: ...Unit Seasonal space heating energy efficiency class A A Water heating energy efficiency class A A Rated heat output Pnominal 31 31 kW Seasonal space heating energy efficiency s 94 94 Useful heat outp...

Page 15: ...SPEED CIRCULATOR WITH CONSTANT T MODE 2 DUTY CYCLE PUMP 40 In this mode the installer sets the T value to be maintained between flow and return e g by entering a value 10 the circu lator speed will ch...

Page 16: ...ning 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 vertic...

Page 17: ...l be flashing If there is a CH request from the additional zone the number 1 or 2 is flashing Only if heat pump is present This icon indicates that cooling is active in the SUMMER state If a cooling r...

Page 18: ...e signal on the main screen corresponds to the highest priority in the following ascending order Grey Green Yellow and Red The configuration MENU is organised with a multi access level tree structure...

Page 19: ...99 SERVICE only mixing zones with ACTUATION BE16 PI INTEGRAL 10 0 99 SERVICE only mixing zones with ACTUATION BE16 VALVE RUN 120 sec 0 sec 120 sec SERVICE only mixing zones with ACTUATION BE16 CLOSIN...

Page 20: ...est type TA and zone type HT 0 4 0 2 0 8 INSTALLER if EXTERNAL PROBE request type TA and zone type LT 2 0 1 0 5 0 INSTALLER if request type AMBIENT PROBE or REC10CH AMBIENT INFLUENCE 10 0 20 INSTALLER...

Page 21: ...LE COOLING FUNCTION NOT ACTIVE FUNCTION ACTIVE FUNCTION NOT ACTIVE INSTALLER USE FOR DHW DON TUSE FOR DHW DHW FUNCTION NOT ACTIVE DHW FUNCTION ACTIVE DHW FUNCTION NOT ACTIVE INSTALLER if BE17 present...

Page 22: ...N INSTALLER ACTIVATE FUNCTION INSTALLER FUNCTION SETTINGS SERVICE TFMIN 20 C 15 C 30 C SERVICE TFMAX 35 C 30 C 55 C SERVICE COMBUSTION MONITORING SERVICE GAS TYPE NATURAL GAS NATURAL GAS LPG INSTALLER...

Page 23: ...INSTALLER PUMP DUTY CYCLE INSTALLATION WEATHER COMPENSATION RANGE RATED TECHNICAL INSTALLER PARAMETERS CALIBRATION 8 FRI 09 04 2021 12 17 MENU INFO SET AIR PURGING CYCLE IN PROGRESS STATE 30 C 3 PLAN...

Page 24: ...ly 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...

Page 25: ...BLE SURFACE Theappliancecanbemountedonawallofcombustiblematerial without any requirement to fit any additional protective fire resistant material 4 9 TIMBER FRAMED BUILDINGS If the appliance is to be...

Page 26: ...o which people have access including balconies or flat roofs the terminal must be protected by a guard of durable material The guard must be fitted centrally over the terminal Refer to I S 813 when th...

Page 27: ...he correct way up 5 2 CONTENTS Contained within the carton is the boiler the wall bracket carton template anaccessoriespackcontainingapplianceserviceconnections and washers theinstructionpackcontainin...

Page 28: ...d an appropriate type and quantity of fixing 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 fla...

Page 29: ...and plugged An appropriate type and quantity of fixing 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...

Page 30: ...pliance Fig 18 5 6 6 COMBINED PRV CONDENSATE DISCHARGE PIPE This appliance will under normal operating conditions produce condensate fluid that will require to be disposed of via the dwelling s waste...

Page 31: ...ance 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 flow rate NOTE all any functions of the main zone...

Page 32: ...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 r...

Page 33: ...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 DAYLIGHT SAVINGS TIME settings as well as LANGUAGE and the duration of the back li...

Page 34: ...d DO_AUX1 0 additional pump management zone valve management DO_AUX1 1 zone valve management zone valve management DO_AUX1 2 additional pump management additional pump management CONFIG OTBUS this par...

Page 35: ...CTIVITY EXT SENSOR set the desired value Note The value of the calculated outdoor temperature used by the thermoregulation algorithm is displayed in the INFO menu under T EXT FOR THERMOREG HEAT REQUES...

Page 36: ...be interrupted by removing the cap from the control panel and pressing the combustion analysis button SW1 or in the following way Select TECHNICAL AIR PURGING CYCLE STOP FUNCTION INSTALLER WEATHER CO...

Page 37: ...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 final fault condition during which it shutdo...

Page 38: ...ER ONLY HEATING AND HOT WATER 1 Perform the combustion check verifying that the CO2 values correspond to those indicated in section 2 Once completed remove the analyser probe and close the combustion...

Page 39: ...ault 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...

Page 40: ...ry the simultaneous replacement of both electronics boards AKM and REC10CH MASTER will require the re programming of these parameters Set SERVICE password Select TECHNICAL COMBUSTION MONITORING AIR PU...

Page 41: ...sate fluid b Once the operations have been completed reassem ble the components by operating in the reverse order to what is described checking the floating seal and replace it if necessary If replaci...

Page 42: ...lace 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 co...

Page 43: ...t 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...

Page 44: ...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...

Page 45: ...disconnection and re connection of any electrical wiring or component these checks must be repeated 8 6 FAULT FINDING Before attempting any faultfinding the electrical checks as detailed in section 8...

Page 46: ...return and down arrow 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 ME...

Page 47: ...HS pink PWM grey F Lv X13 1 4 1 10 X19 D H W T 1 3 P T t F M 1 3 black 5Vdc blue sign brown red blue sign violet 5Vdc orange red grey grey MOD 1 X9 12 t t t F O H T R S F T F S red red white white gr...

Page 48: ...WARNING The gas supply to the appliance must remain turned OFF until the following procedure has been completed 1 Select STATE BOILER 2 Set the SERVICE password 3 Select TECHNICAL COMBUSTION MONITORI...

Page 49: ...h section 7 3 set boiler to operate at minimum rate to minimum load condition Allow sufficient time for combustion to stabilise YES I Is s C CO O 3 35 50 0p pp pm m a an nd d C CO O C CO O2 2 r ra at...

Page 50: ...turers recommendations at least annually This must be carried out by a competent Gas Safe registered engineer The service details should be recorded on the Benchmark Service and Interim Boiler Work Re...

Page 51: ...no what is the maximum central heating output selected kW Dynamic gas inlet pressure mbar C Central heating return temperature C System correctly balanced rebalanced Yes COMBINATION BOILERS ONLY Is t...

Page 52: ...eer name Company name Telephone No Gas Safe registration No Max rate CO ppm CO CO CO Min rate CO ppm CO CO CO undertaken in accordance with manufacturers instructions and readings are correct yes Gas...

Page 53: ...eer name Company name Telephone No Gas Safe registration No Max rate CO ppm CO CO CO Min rate CO ppm CO CO CO undertaken in accordance with manufacturers instructions and readings are correct yes Gas...

Page 54: ...mmissioning sheet RGII Installation Certificate ROI the warranty will commence from the date of manufacture as detailed on the appliance data plate 6 To qualify for the full term of warranty the boile...

Page 55: ...adhered to f To any other costs or expenses caused by or arising as a result of the breakdown of a Vok ra Boiler g To any costs incurred during delays in fixing reported faults 10 We reserve the righ...

Page 56: ...Herts AL2 1HG www vokera co uk www vokera ie Sales General Enquires T 0844 391 0999 F 0844 391 0998 Vok ra Ireland West Court Callan Co Kilkenny T 056 7755057 F 056 7755060 Vok ra Limited reserve the...

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