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33

ANTI-CYCLE FUNCTION

RESET CH TIMERS

DHW THERMOSTAT

PARAMETERS

INSTALLER

PRE-HEATING

 

-

ANTI-CYCLE FUNCTION:

  once the setpoint has been 

reached the burner will cycle on and off until an external 

control, e.g. time clock cancels the heating request. This 

function imposes a set time between the burner OFF/ON 

cycles in order to optimise efficiency. The factory setting 

for this parameter is 3 minutes and can be set to a value 

between 0 min and 20 min selecting the desired one.

ANTI-CYCLE FUNCTION

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 ACTIVE

INSTALLER

FUNCTION NOT ACTIVE

RESET CH TIMERS

 

-

SLIDING OUTLET (only if water tank connected):

 this 

parameter allows you to activate the SLIDING OUTLET 

function for changing the delivery setpoint used by the boiler, 

when in domestic hot water request mode. The factory value 

is FUNCTION NOT ACTIVE: modulation at a fixed delivery 

value of 80°C. By choosing FUNCTION ACTIVE the delivery 

setpoint is no longer fixed at 80°C, but can be changed and 

calculated automatically by the boiler on the basis of the 

difference between the desired domestic hot water setpoint 

and the temperature measured by the water tank probe. Note: 

we recommend activating this function for storage cylinders 

with a capacity greater than 100 litres, loading the cylinder 

would be too slow. 

 

b

It might be necessary to reset the value of this parameter 

when replacing the adjustment board.

FUNCTION NOT ACTIVE

SLIDING OUTLET

FUNCTION ACTIVE

INSTALLER

 

-

DO_AUX1:

 through this value it is possible to configure the 

functions associated with the digital output used to manage 

the additional pump and the zone valve. The factory setting 

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

with the following meaning: 

Pin 1 and 2 of X21 Jumper not present Jumpered

DO_AUX1 = 0

additional pump 

management

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.

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

 

REC10 MASTER:

 the heat request is generated by the 

REC10 MASTER; in this case the REC10 assumes the 

function of an HIU (Human Machine Interface)

 

-

TYPE OF ZONE:

 this parameter allows you to specify the 

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

among the following options:

  HIGH TEMPERATURE (factory setting): 

  LOW TEMPERATURE

 

-

MIN SET HEAT:

 this parameter allows you to specify the 

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

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

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

 

-

MAX SET HEAT:

 this parameter allows you to specify the 

maximum heating setpoint that is possible (range 20°C 

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

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

systems)

 

-

CHANGING NAME: 

this parameter allows you to attribute 

a specific name to the heating zone

 

-

POR (embedded clock function): 

this parameter 

enables or disables the embedded clock.

 

Embedded clock disabled (default) = 0

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

thermostat connection (TA).

 

Embedded clock enabled = 1

  Central heating ON/OFF times are controlled according to 

the (default) heating programme, whilst room temperature 

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

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

 

b

If you want to deactivate the zone in summer or winter, you 

must select the pre-established season (SUMMER or WIN-

TER in the boiler MENU) and set the zone in question to off 

in the STATE or MODE menu

.

6.2.3  ANTI-LEGIONELLA FUNCTION (only if 

connected a water tank with probe)

The machine has an automatic ANTI-LEGIONELLA function 

that, if necessary, heats the domestic water to 70°C and 

keeps it at that temperature for 15 minutes to prevent the 

proliferation of bacteria in the water tank. This function can 

be set to be activated every day or every week. This function 

is not performed if the water tank temperature has reached 

70°C over the past 24 h - in case it is set to start daily - or over 

Summary of Contents for 41-364-13

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 20S NG G C N 41 364 13 UNICA MAX 30S NG G C N 4...

Page 2: ...s 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 fus...

Page 3: ...shing This icon indicates that the circuit for domestic hot water production is enabled When a domestic hot water request is in progress the icon flashes default value parameter water tank type 0 If w...

Page 4: ...OP TIME 20 00 00 00 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 FU...

Page 5: ...essing the ok and back keys it will be possible to select the other zones in this sequence only if added and configured with the REC10 H PLANT MAIN ZONE ZONE 1 ZONE 2 The TIME AND DATE DAYLIGHT SAVING...

Page 6: ...and confirm Once the selection is confirmed the display returns to the SET screen If the selection is cancelled or the back key is pressed you return to the previous SET screen SET HEATING 78 0 C SET...

Page 7: ...t time is replaced with the boiler flow temperature and turns on the icon concerning the type of request in progress A system efficiency indicator is also displayed at the top of the screen HIGH EFFIC...

Page 8: ...er to confirm that the operation has been completed successfully the display will show the table with the selected time frame flashing just before deleting it from the table START MAIN THURSDAY ARE YO...

Page 9: ...l E090 fault flue gases probe flue gases overtemperature probe temporary final E091 clean primary heat exchanger temporary E099 reset attempts exhausted boiler blocked definitive not resettable water...

Page 10: ...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...

Page 11: ...ous 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 pa...

Page 12: ...abled Ignitionissensedbytheelectroniccircuittoensureflamestability at the burner Once successful ignition has been achieved the electronic circuitry increases the gas rate to 75 for a period of 15minu...

Page 13: ...ance 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 requi...

Page 14: ...ime P4 19 5 31 2 kW At 30 of rated heat output and low temperature regime P1 6 5 10 5 kW Useful efficiency At rated heat output and high temperature regime 4 87 8 87 9 At 30 of rated heat output and l...

Page 15: ...CULATOR 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 change to o...

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: ...ne the number 1 or 2 is flashing Only if heat pump is present This icon indicates that cooling is active in the SUMMER state If a cooling request from the main zone is in progress the icon is flashing...

Page 18: ...he 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: ...I PROPORTIONAL 5 0 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 ACT...

Page 20: ...IENT PROBE or REC10CH AMBIENT INFLUENCE 10 0 20 INSTALLER if request type AMBIENT PROBE or REC10CH OFFSET 20 C 20 C 40 C INSTALLER if request type AMBIENT PROBE or REC10CH COOLING 18 C 4 C 20 C INSTAL...

Page 21: ...SABLE 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 prese...

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

Page 23: ...CH TIMERS DHW THERMOSTAT PARAMETERS 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...

Page 24: ...rves 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 c...

Page 25: ...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 Insta...

Page 26: ...provided see fig 6 You shouldensurethismethodoffillingcomplieswiththelocalwater authority regulations 4A 6 7 LOW PRESSURE SEALED SYSTEM An alternative method of filling the system would be from an in...

Page 27: ...ystem or download the instructions from the Vokera website The appliance flue outlet elbow can be rotated through 360 on its vertical axis In addition the flue may be extended from the outlet elbow in...

Page 28: ...hat all seals are located properly You must ensure that the entire flue system is properly supported and connected Seal the flue assembly to the wall using cement or a suitable alternative that will p...

Page 29: ...hers before tightening the valve to the appliance NOTE It will be necessary to hold the valve with one spanner whilst tightening with another Gas cock C H flow valve C H return valve Fig 20 5 6 1 GAS...

Page 30: ...ust be 3 core flexible sized 0 75mm to BS 6500 or equivalent Wiring to the appliance must be rated for operation in contact with surfaces up to 90 C ModBus 485 Connection CE4 Carry out the connections...

Page 31: ...e the fly 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 car...

Page 32: ...AND DATE Navigate with the keys to set the values 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 DAYLIGHT SAVINGS TIME setting...

Page 33: ...tantaneously 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...

Page 34: ...N 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 2 10 TIME SCHEDULE User section for detailed...

Page 35: ...ot 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...

Page 36: ...alue 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 HEATING 6 5 ADJUSTING THE HEATING WATER TEMPERATURE WITH AN...

Page 37: ...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...

Page 38: ...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...

Page 39: ...rm E097 iono alarm E085 combustion fault high CO These are temporary alarms that if they occur several times in an hour they become definitive the last error to occur is displayed and is followed by a...

Page 40: ...lectronics boards AKM and REC 10 MASTER will require the re programming of these parameters Set SERVICE password Select TECHNICAL COMBUSTION MONITORING AIR PURGING CYCLE PARAMETERS EXHAUST PROBE RESET...

Page 41: ...f replacement it is necessary to always ensure that it is correctly positioned and to strictly observe the reference shown in the figure detector electrode ionisation sensor flame ignition electrode a...

Page 42: ...ct 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...

Page 43: ...nt hysterisis the burner will re light NOTE Ifburnerignitionisnotdetectedatthefirstattempt theappliance will repeat the ignition sequence another two times 3 times in total before going to lockout Whe...

Page 44: ...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 final the pump will perform 30 to 60 second post...

Page 45: ...iance The UNICA MAX S system boilers incorporate an internal relay that enables a direct switched 230v supply to be used to generate a heating or hot water request from an external control system such...

Page 46: ...T Pressure transducer MOD Modulator F Lv Fan signal control M GREY BROWN BLUE ORANGE ORANGE BLUE BROWN GREY M N L 230 V Fuse 3 AMP NO NC COM NO NC COM ROOM THERMOSTAT CYLINDER THERMOSTAT M NO NC COM...

Page 47: ...SC2 blue S E brown yellow green N F X6 3 1 red 24 Vdc yellow B orange A black red 24 Vdc yellow B orange A black REC black orange A yellow B red 24 Vdc A B CE4 removable connector positioned under she...

Page 48: ...E password 3 Select TECHNICAL COMBUSTION MONITORING GAS TYPE LPG ERROR HISTORY EXHAUST PROBE RESET AIR PURGING CYCLE PARAMETERS COMBUSTION MONITORING SERVICE TECHNICAL BOILER TYPE COMBUSTION OFFSET GA...

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

Page 55: ...dhered 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 right...

Page 56: ...Ireland West Court Callan Co Kilkenny T 056 7755057 F 056 7755060 Vok ra Limited reserve the right to change specification without prior notice Consumers statutory rights are not affected Company Reg...

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