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40

6.15 WATER TANK CONFIGURATION

 

b

The boiler leaves the factory pre-configured for manag-

ing a water tank with a thermostat (water tank type pa-

rameter = 0

). 

To modify the configuration of the water tank:

 

-

select TECHNICAL 

 WATER TANK

CALIBRATION

TECHNICAL

INSTALLER

COMBUSTION ANALYSIS

EXHAUST PROBE RESET

WATER TANK

 

 

-

choose from the following options:

WATER TANK

INSTALLER

REMOVE WATER TANK

WATER TANK TYPE

WATER TANK FLOW

WATER TANK TYPE:

  this parameter allows you to set the 

type of the water tank. Set the value to 1 to select a water 

tank with probe, set the value to 0 to select a water tank with 

thermostat (factory setting).

REMOVE WATER TANK: 

this function is used to disable the 

operation of the water tank; water tank disabled, the relative 

configuration menu is no longer accessible. If you wish to add 

a storage cylinder again, after a previous removal, follow the 

instructions in paragraph section 4.7.

WATER TANK FLOW:

 the parameter allows you to set the 

delivery temperature of the boiler to the water tank when the 

SLIDING OUTLET function is not active. The factory setting 

is 80°C.

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

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

WINTER

ON

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 re-

programming of these parameters.

 - Set SERVICE password

 - Select TECHNICAL 

 COMBUSTION MONITORING

AIR PURGING CYCLE

PARAMETERS

EXHAUST PROBE RESET

ERROR HISTORY

COMBUSTION MONITORING

SERVICE

TECHNICAL

 - Select GAS TYPE

 - Set this parameter depending on the type of gas of the 

boiler: NG = NATURAL GAS - LPG = LPG

COMBUSTION MONITORING

COMBUSTION OFFSET

BOILER TYPE

GAS TYPE

SERVICE

 - Select BOILER TYPE and set as shown in the table

A

B

C

SERVICE

BOILER TYPE

...

BOILER TYPE

UNICA MAX 20S

A

UNICA MAX 30S

G

 

-

Select COMBUSTION OFFSET 

 RESTORE

 

-

Press OK to confirm.

COMBUSTION OFFSET

RESTORE

RESET

SERVICE

COMBUSTION SELF-CALIBRATION

Function used by the after sales service to make an automatic 

combustion curve correction if the CO

2

 values (shown in the 

technical data) are outside the permitted range.

 - Power the boiler electrically by bringing the main switch to 

“ON”.

 - Set the boiler status to OFF.

 - Select TECHNICAL 

 COMBUSTION CONTROL 

 

SELF-CALIBRATION.

 - Set the values to:

  RESTORE = use the old curve (if the CO

2

 value is too high)

  RESET = use the new curve (if the CO

2

 value is too low).

This parameter is only available when the system is OFF.

6.19 MAINTENANCE 

 

b

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. 

 

 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.

 

b

Do not clean the appliance or its parts with inflammable 

substances (e.g. petrol, alcohol, etc.).

 

b

Do not clean panels, painted parts and plastic parts with 

paint thinner.

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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