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34

 

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ANTI-CYCLE FUNCTION (TIMER OFF CH):

 once the 

setpoint has been reached the burner will cycle on and off 

until an external control, e.g. time clock cancels the heating 

request. This function imposes a set time between the 

burner OFF/ON cycles in order to optimise efficiency. The 

factory setting is 3 minutes and can be set and confirmed 

to a value between 0 min and 20 min.

ANTI-CYCLE FUNCTION

3

MIN

 

-

RESET CH TIMER: 

this parameter allows you to reset 

the REDUCED HEATING MAXIMUM OUTPUT TIMING, 

during which the speed of the fan is limited to 75% of the 

maximum heating output that has been set, and the AIR 

PURGING CYCLE. The factory setting for this parameter 

is  FUNCTION NOT ACTIVE, select FUNCTION ACTIVE, 

confirming the selection for resetting the timings.

FUNCTION NOT ACTIVE

RESET CH TIMER

FUNCTION ACTIVE

INSTALLER

 

-

DOMESTIC HOT WATER THERMOSTAT:

  this parameter 

allows you to set the type of DOMESTIC HOT WATER 

THERMOSTAT. The factory setting is RELATED, i.e. for 

domestic hot water the boiler switches off at se5°C 

and restarts at se4°C.  Select the ABSOLUTE 

values, where the boiler for domestic hot water will still 

switch off at 65°C and restart at 63°C.

DHW THERMOSTAT

ABSOLUTE

INSTALLER

RELATED

 

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PREHEATING:

 parameter  PREHEATING = 1 (function 

active, P symbol on steady). This function keeps the water 

in the domestic hot water exchanger hot, to reduce standby 

times when a request is made. During a pre-heating 

request, the P symbol starts flashing. With PREHEATING = 

0, the symbol P switches off aand the function is deactivate. 

The function is not active when the boiler is OFF.

TERMOSTATI SAN

PREHEATING

0

 

-

TOUCH & GO:

  if you do not want PREHEATING to 

be always active and you want hot water immediately 

ready, it is possible to preheat the domestic hot water 

just a few moments before taking it. Set the parameter to 

PREHEATING = 2, to activate the TOUCH&GO function. 

This function allows you, by opening and closing the tap, to 

start the instantaneous preheating that prepare the hot water 

only for that water take.

 

-

DHW DELAY:

 this parameter allows you to set the delayed 

starting of the boiler in domestic hot water mode. The 

factory setting is 0 and can be programmed within the 

range 0 - 60 sec.

 

-

DO_AUX1:

 through this value it is possible to configure the 

functions associated with the digital output used to manage 

the additional pump and the zone valve. The factory setting 

for this parameter is 0 and can be set within the 0 - 2 range 

with the following meaning: 

Pin 1 and 2 of X21 Jumper not present Jumpered

DO_AUX1 = 0

additional pump 

management

zone valve 

management

DO_AUX1 = 1

zone valve 

management

zone valve 

management

DO_AUX1 = 2

additional pump 

management

additional pump 

management

 

-

CONFIG OTBUS:

  this parameter is used to enable the 

remote control of the boiler via an OpenTherm device:

1 = FACTORY VALUE. OTBus function enabled. The 

message “OPEN THERM CONNECTED” will appear on 

the display when an OTBus device connected.

 

b

The OpenTherm connection is not enabled in the presence 

of a heat pump.

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

0, any possible OTBus connection is instantaneously 

interrupted.

6.2.2  CONFIGURATION OF THE ZONE

It is possible to customise the management of the heating 

zone by accessing the ZONES MANAGER menu.

 - Access to menu TECHNICAL 

 INSTALLATION 

 

ZONES MANAGER 

 MODIFY ZONE.

PARAMETERS

WEATHER COMPENSATION

INSTALLATION

RANGE RATED

CALIBRATION

INSTALLER

TECHNICAL

SENSOR CALIBRATION

ZONES MANAGER

SYSTEM RESET

INSTALLER

INSTALLATION

ADD ZONE

MODIFY ZONE

DELETE ZONE

INSTALLATION

INSTALLER

 - Select the desired heating zone and then choose from 

among the options:

MAIN

INSTALLER

INSTALLATION

 

-

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

 

REC10CH MASTER:

 the heat request is generated by the 

REC10CH MASTER; in this case the REC10CH assumes 

the function of an HIU (Human Machine Interface)

 

-

TYPE OF ZONE:

 this parameter allows you to specify the 

type of zone to be heated, it is possible to choose from 

among the following options:

  HIGH TEMPERATURE (factory setting): 

  LOW TEMPERATURE

 

-

MIN SET HEAT:

 this parameter allows you to specify the 

minimum heating setpoint that is possible (range 20°C - 

80.5°C, default 20°C for high temperature systems; range 

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

 

-

MAX SET HEAT:

 this parameter allows you to specify the 

maximum heating setpoint that is possible (range 20°C 

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

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

systems)

 

-

CHANGING NAME:

 this parameter allows you to attribute 

a specific name to the heating zone

 

-

POR (embedded clock function): 

this parameter 

enables or disables the embedded clock.

 

Embedded clock disabled (default) = 0

  Central heating is controlled (ON & OFF) by the room 

thermostat connection (TA).

 

Embedded clock enabled = 1

  Central heating ON/OFF times are controlled according to 

the (default) heating programme, whilst room temperature 

is controlled via the room thermostat (TA). Ensure that the 

operating mode (‘STATE’ menu) is set to AUTO.

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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