Unical PANEL BOARD MODULATING MASTER User manual

ENGLISH
SYSTEM MANAGER OPERATING INSTRUCTIONS
- MODULATING MASTER
- DUAL-STAGE MASTER
PANEL BOARD
PANEL BOARD
- MODULATING CASCADE
- DUAL-STAGE CASCADE
°C
OK
1
2
1
2
>1s
+
°C
°C
°C
BUS ID 1/2/11/Mod
Run
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1
31
42
11
41 12 13
32
14 15 16 17
35
33 34
18 19 20 21 22 23
21. 0 20
Servizio
Data/Ora/Vacanze
Visual Inf.
Utente
Progr.Tempo
Tecnico
Impianto
Acqua Calda
Circuito risc. I
Solare/MF
Circuito risc. II
°C
OK
1
2
1
2
>1s
+
°C
°C
°C
BUS ID 1/2/11/Mod
Run
2
1

2
Table of contents
1 - SYMBOLS USED IN THE MANUAL
Pay special attention when reading this manual to the parts marked by the symbols:
NOTE!
Suggestions for the user
ATTENTION!
Possible hazardous situation
for the product and the environment
DANGER!
Serious danger for
personal safety and life
2 - APPROPRIATE USE OF APPLIANCE
XC-K appliances have been built according to the current level of engineering and acknowledged technical
safety rules.
Nonetheless, if improperly used, dangers could arise for the safety and the very life of the user and other
persons or damage to the equipment or other objects.
The appliance is intended to operate in hot air circulation heating systems.
Any other use must be considered improper.
UNICAL shall not held be liable for any damage resulting from improper use; in this case the user is fully
responsible for the risk.
Use according to the intended purposes also include careful compliance with the instructions in this manual.
3 - WATER TREATMENT
• Thehardnessofthesuppliedwaterconditionsthefrequencyatwhichthedomestichotwaterexchangermustbe
cleaned.
• Ifthewaterhasahardnessgreaterthan15°f,werecommendusingwatersofteners,chosenaccordingtothe
characteristicsofthewater.
• Werecommendcheckingandcleaningthedomestichotwaterexchangerattheendoftherstyearofuseand
everytwoyearsthereafter;onthisoccasion,alsocheckthestateofwearoftheanode.
TABLE OF CONTENTS
1 Symbolsusedinthemanual...................................................................................................................................................... 2
2 Appropriateuseofappliance...................................................................................................................................................... 2
3 Watertreatment.......................................................................................................................................................................... 2
4 Informationforsystemmanagerbyinstaller/maintenancetechnician........................................................................................ 3
5 Safetywarnings.......................................................................................................................................................................... 3
6 Operatinginstructions................................................................................................................................................................ 4
6.1 MODULATINGMASTERpanelboardcode37892(withsingleboiler)............................................................................... 4
6.2 MODULATINGMASTERpanelboardcode37892(withboilersincascade)...................................................................... 7
6.3 MODULATINGCASCADEpanelboardcode37900(withboilersincascade)................................................................. 10
6.4 DUAL-STAGEMASTERpanelboardcode38778(withsingleboiler)............................................................................... 15
6.5 DUAL-STAGEMASTERpanelboardcode38778(withboilersincascade)..................................................................... 18
6.6 DUAL-STAGECASCADEpanelboardcode37901(withboilersincascade)................................................................... 21
6.7 Checksbeforecommissioning........................................................................................................................................... 26
6.8 Eliminatingfaults................................................................................................................................................................ 26

General information
3
 Thesystemmanagermustbeinstructedconcerningtheuseandoperationofhisheatingsystem,inparticular:
• Givethesystemmanagertheseinstructions,aswellastheotherappliancedocumentsinsertedintheenvelope
insidethepackaging.The system manager must keep this documentation for future consultation.
• Informthesystemmanagerabouttheimportanceoftheairventsandtheuegasexhaustsystem,highlighting
theiressentialfeaturesandtheabsoluteprohibitionofmodifyingthem.
• Informthesystemmanagerconcerningcontrolofthesystem’swaterpressureaswellasoperationstorestoreit.
• Informthesystemmanagerconcerningcorrectcontroloftemperatures,controlunits/thermostatsandradiators
tosaveenergy.
• Rememberthatthesystemmustreceiveregularmaintenanceatleastonceayearand a combustion
analysismustbeperformedinthetimetableforeseenbystandardsinforce.
• Shouldtheappliancebesoldortransferredtoanewownerorifyoumoveandleavetheappliance,alwaysmake
surethattheinstructionbookletaccompaniesitinordertobeconsultedbythenewownerand/orinstaller.
The manufacturer will not be held liable in case of damage to persons, animals or objects resulting from
failure to comply with the instructions contained in this manual.
4 - INFORMATION FOR SYSTEM MANAGER
BY INSTALLER/MAINTENANCE TECHNICIAN
5 - SAFETY WARNINGS
ATTENTION!
The appliance must be installed, adjusted and maintained by professionally qualified personnel, in
compliance with standards and provisions in force. Incorrect installation can cause damage to persons,
animals and objects for which the manufacturer cannot be held responsible.
DANGER!
NEVER attempt performing maintenance or repairs on the boiler on your own initiative.
Any work must be done by professionally qualified personnel authorised by Unical.
We recommend stipulating a maintenance contract.
Insufficient or irregular maintenance can jeopardise the operating safety of the appliance and cause damage
to persons, animals and objects for which the manufacturer cannot be held responsible.
Modifying parts connected to appliance
Donotmodifythefollowingparts:
- theboiler
- thegas,air,waterandelectricitylines
- theuegaspipe,safetyvalveandheatingwaterdrainpipe
- constructionpartswhichaffecttheoperatingsafetyoftheappliance
Smell of gas
Shouldasmellofgasbeperceived,followthesesafetyguidelines:
- donotturnelectricswitchesonoroff
- donotsmoke
- donotusethetelephone
- closethegasshut-offvalve
- airouttheareawherethegasleakagehasoccurred
- informthegassupplieroracompanyspecialisedininstallationandmaintenanceofheatingsystems.
Explosive and easily flammable substances
Donotuseorstoreexplosiveoreasilyammablematerials(e.g.petrol,paints,paper)intheroomwheretheap-
plianceisinstalled.

4
System manager operating instructions
18 19
18 19
14 15
14 15
14 15 16 17
35
33 34
18 19 20 21 22 23
21.0 20
Servizio
Data/Ora/Vacanze
Visual Inf.
Utente
Progr.Tempo
Tecnico
Impianto
Acqua Calda
Circuito risc. I
Solare/MF
Circuito risc. II
°C
OK
1
2
1
2
>1s
+
°C
°C
°C
BUS ID 1/2/11/Mod
Run
2
1
Main switch
Thisswitchconnectsanddisconnectspowertotheboiler:
- Withtheswitchat0 ,theboilerisnotpowered
 electrically(greenindicatorlightoff).
- WiththeswitchatI ,theboilerispoweredelectrically
(greenindicatorlighton)andissetupfortheproduction
ofhotwaterforheating.
Burner switch
Thisswitchconnectsanddisconnectspowertotheburner:
- Withtheswitchat0 ,theburnerisnotpowered
 electrically.
- WiththeswitchatI ,theburnerispoweredelectrically
andissetuptorunatrequestoftheheatingcontroller.
6 - OPERATING INSTRUCTIONS
6.1 - MODULATING MASTER PANEL BOARD code 37892 (with single boiler)
14 Main switch with indicator light
16 General fuse
18 Burner switch
19 P1 system pump switch (cascade)
20 Pz1 direct zone system pump switch
21 Pz2 mixed zone system pump switch
33 Working thermostat
35 Safety thermostat
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System manager operating instructions
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20 21
20 21
20 21
20 21
Direct zone system pump switch
Thisswitchconnectsanddisconnectspowertothedirect
zonesystempump:
- Withtheswitchat0 ,thepumpisnotpowered
 electrically.
- With the switch at I , the system pump is powered
electricallyandisreadytorun.
IMPORTANT: thesystem pumpmustalwaysbeready
torunbeforeswitchingtheburnerontoallowheattobe
dispersed.
Otherwise,thesafetythermostatintheboilerwilltrigger
whenthemaximumtemperatureisreachedwiththe
consequentneedtoberearmed.
Mixed zone system pump switch
Thisswitchconnectsanddisconnectspowertothemixed
zonesystempump:
- Withtheswitchat0 ,thepumpisnotpowered
 electrically.
- With the switch at II, the system pump is powered
electricallyandisreadytorun.
IMPORTANT: thesystem pumpmustalwaysbeready
torunbeforeswitchingtheburnerontoallowheattobe
dispersed.
Otherwise,thesafetythermostatintheboilerwilltrigger
whenthemaximumtemperatureisreachedwiththe
consequentneedtoberearmed.
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6
System manager operating instructions
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33
Heating temperature control
Temperatureisadjustedbetweenaminimumof0°Cand
amaximumof90°C.
Forthe heatingcontrollertoworkproperly,theknobof
theworkingthermostatMUSTbeattheMAXfull-scale
(tothe“right”).
Asfarastheworkingtemperaturesettingisconcerned,
see the paragraph “PROGRAMMINGTHE HEATING
CONTROLLER”.
Thevaluesetwillappearontheheatingcontrollerdisplay.
Resetting safety thermostat
IMPORTANT: The safety thermostat is located below
the cap indicated in the figure to the side.To access it
when the boiler blocks, unscrew the plastic cap with
a screwdriver; after having reset the boiler, put the
plastic cap back on.
Thesafetythermostatcanbetriggeredwhentheboiler
overheats.
Thiscanbesolvedrstofallbyloweringtheworking
temperatureoftheboiler.
Ifthesafetydeviceoftheboilercontinues
totrigger,donottrytorestoreoperationof
theboileronyourown.
ContactanAuthorisedAssistanceCentre.

System manager operating instructions
7
18 19
18 19
14 15
14 15
14 15 16 17
35
33 34
18 19 20 21 22 23
21.0 20
Servizio
Data/Ora/Vacanze
Visual Inf.
Utente
Progr.Tempo
Tecnico
Impianto
Acqua Calda
Circuito risc. I
Solare/MF
Circuito risc. II
°C
OK
1
2
1
2
>1s
+
°C
°C
°C
BUS ID 1/2/11/Mod
Run
2
1
Main switch
Thisswitchconnectsanddisconnectspowertotheboiler
n°1:
- With the switch at 0 , the boiler n°1 is not powered
electrically(greenindicatorlightoff).
- WiththeswitchatI ,theboilern°1ispowered
 electrically(greenindicatorlighton)andissetupfor
theproductionofhotwaterforheating.
Burner switch
Thisswitchconnectsanddisconnectspowertothe
burneroftheboilern°1:
- Withtheswitchat0 ,theburneroftheboilern°1isnot
poweredelectrically.
- With the switch at I , the burner of the boiler n°1 is
poweredelectricallyandissetuptorunatrequestof
theheatingcontroller.
6.2 - MODULATING MASTER PANEL BOARD code 37892 (with boilers in cascade)
14 Main switch with indicator light
16 General fuse
18 Burner switch
19 System pump switch P1 (boiler n°1 in cascade primary ring)
20 Pz1 direct zone system pump switch
21 Pz2 mixed zone system pump switch
33 Working thermostat
35 Safety thermostat
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System manager operating instructions
20 21
20 21
20 21
20 21
18 19
18 19
Direct zone system pump switch
Thisswitchconnectsanddisconnectspowertothedirect
zonesystempump:
- Withtheswitchat0 ,thepumpisnotpowered
 electrically.
- With the switch at I , the system pump is powered
electricallyandisreadytorun.
IMPORTANT: thesystem pumpmustalwaysbeready
torunbeforeswitchingtheburnerontoallowheattobe
dispersed.
Otherwise,thesafetythermostatintheboilerwilltrigger
whenthemaximumtemperatureisreachedwiththe
consequentneedtoberearmed.
Mixed zone system pump switch
Thisswitchconnectsanddisconnectspowertothemixed
zonesystempump:
- Withtheswitchat0 ,thepumpisnotpowered
 electrically.
- With the switch at II, the system pump is powered
electricallyandisreadytorun.
IMPORTANT: thesystem pumpmustalwaysbeready
torunbeforeswitchingtheburnerontoallowheattobe
dispersed.
Otherwise,thesafetythermostatintheboilerwilltrigger
whenthemaximumtemperatureisreachedwiththe
consequentneedtoberearmed.
Boiler n°1 primary ring system pump switch
Thisswitchconnectsanddisconnectspowertothe
systempumpoftheprimaryringofboilern°1:
- Withtheswitchat0 ,thepumpisnotpowered
 electrically.
- With the switch at II, the system pump is powered
electricallyandisreadytorun.
IMPORTANT: thesystem pumpmustalwaysbeready
torunbeforeswitchingtheburnerontoallowheattobe
dispersed.
Otherwise,thesafetythermostatintheboilerwilltrigger
whenthemaximumtemperatureisreachedwiththe
consequentneedtoberearmed.
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System manager operating instructions
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35
33
Heating temperature control
Temperatureisadjustedbetweenaminimumof0°Cand
amaximumof90°C.
Forthe heatingcontrollertoworkproperly,theknobof
theworkingthermostatMUSTbeattheMAXfull-scale
(tothe“right”).
Asfarastheworkingtemperaturesettingisconcerned,
see the paragraph “PROGRAMMINGTHE HEATING
CONTROLLER”.
Thevaluesetwillappearontheheatingcontrollerdisplay.
Resetting safety thermostat of boiler n°1
IMPORTANT: The safety thermostat is located below
the cap indicated in the figure to the side.To access it
when the boiler blocks, unscrew the plastic cap with
a screwdriver; after having reset the boiler, put the
plastic cap back on.
Thesafetythermostatcanbetriggeredwhentheboiler
overheats.
Thiscanbesolvedrstofallbyloweringtheworking
temperatureoftheboiler.
Ifthesafetydeviceoftheboilercontinues
totrigger,donottrytorestoreoperationof
theboileronyourown.
ContactanAuthorisedAssistanceCentre.

10
System manager operating instructions
12 13
12 13
11
11
6.3 - MODULATING CASCADE PANEL BOARD code 37900 (with boilers in cascade)
Main switch
Thisswitchconnectsanddisconnectspowertotheboiler
n°2:
- With the switch at 0 , the boiler n°2 is not powered
electrically(greenindicatorlightoff).
- WiththeswitchatI ,theboilern°2ispowered
 electrically(greenindicatorlighton)andissetupfor
theproductionofhotwaterforheating.
Burner switch
Thisswitchconnectsanddisconnectspowertothe
burneroftheboilern°2:
- Withtheswitchat0 ,theburneroftheboilern°2isnot
poweredelectrically.
- With the switch at I , the burner of the boiler n°2 is
poweredelectricallyandissetuptorunatrequestof
theheatingcontroller.
°C
OK
1
2
1
2
>1s
+
°C
°C
°C
BUS ID 1/2/11/Mod
Run
2
1
31
42
11
41 12 13
32
11 Main switch with indicator light
12 Burner switch
13 System pump switch P1 (boiler n°2 in cascade primary ring)
31 Safety thermostat
32 Working thermostat
41 General fuse
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System manager operating instructions
11
31
42
32
12 13
12 13
Boiler n°2 primary ring system pump switch
Thisswitchconnectsanddisconnectspowertothe
systempumpoftheprimaryringofboilern°2:
- Withtheswitchat0 ,thepumpisnotpowered
 electrically.
- With the switch at II, the system pump is powered
electricallyandisreadytorun.
IMPORTANT: thesystem pumpmustalwaysbeready
torunbeforeswitchingtheburnerontoallowheattobe
dispersed.
Otherwise,thesafetythermostatintheboilerwilltrigger
whenthemaximumtemperatureisreachedwiththe
consequentneedtoberearmed.
Heating temperature control
Temperatureisadjustedbetweenaminimumof0°Cand
amaximumof90°C.
Forthe heatingcontrollertoworkproperly,theknobof
theworkingthermostatMUSTbeattheMAXfull-scale
(tothe“right”).
Asfarastheworkingtemperaturesettingisconcerned,
see the paragraph “PROGRAMMINGTHE HEATING
CONTROLLER”.
Thevaluesetwillappearontheheatingcontrollerdisplay.
Thetemperaturewillalsobevisibleonthethermometer
indicatedattheside,aslongasthebulbhasbeen
positionedcorrectlyinthesumpontheupperpartofthe
bodyofboilern°2.
N.B.Therecouldbeadifferenceofafewdegreesbetween
thetemperaturedisplayedontheanaloguethermometer
andtheheatingcontroldigitaldisplay.
Resetting safety thermostat
IMPORTANT: The safety thermostat is located below
the cap indicated in the figure to the side.To access it
when the boiler blocks, unscrew the plastic cap with
a screwdriver; after having reset the boiler, put the
plastic cap back on.
Thesafetythermostatcanbetriggeredwhentheboiler
overheats.
Thiscanbesolvedrstofallbyloweringtheworking
temperatureoftheboiler.
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12
System manager operating instructions
Set language
TIME Adjust the current time:
1. Minute 2. Hour
ITALIAN
PARAMETERS VISIBLE AT COMMISSIONING
Default Individual valuesValue rangeDescription
INSTALLATION PROGRAMMING
YEAR Adjust the current date
MONTH Adjust the current date
DAY Adjust the current date
BUS ID 1Enter the number for heating circuit “1”:
00-15 default 01
BUS ID 2Enter the number for heating circuit “2”:
00-15 default 02
SENSOR 5K
value 00
00 = sensor 5 kOhm NTC
01 = sensor 1 kOhm PTC, the code number is required;
the controller is restarted after it is entered
RETURN Commissioning complete
open level, change the value, save the value and activate next value
open level, change the value, save the value
Depending on implementation
ITALIAN ITALIAN
(-20) (20)
CONTRAST 0
Sensor, day
CHOICE OF READING - - - -
HS 01 / HS 02
SELECTION - PROGRAMMING
Default Individual valuesValue rangeDescription
DOMESTIC HOT WATER PROGRAMMING
00, 01 (OFF / ON)
1X DHW 00 = OFF
10 °C - 70 °C
DHW TEMPERATURE 1 NOMINAL 60 °C
10 °C - 70 °C
DHW TEMPERATURE 2 NOMINAL 60 °C
Exit level using
RETURN
10 °C - 70 °C
DHW TEMPERATURE 3 NOMINAL 60 °C
OK - 70K
COIL VALUE 0 degrees
00, 01 (OFF / ON)
RECIRCULATION PUMP 00 = OFF
00, 01 (OFF / ON)
ANTI-LEGIONELLA 00 = OFF
PARAMETERS PROGRAMMABLE BY USING
PROGRAMMING E8.5064 HEATING CONTROLLER
Asfarasadjustmentandprogrammingoftheheatingcontroller,thefollowingaretheparameterswhichcanbe
programmedbytheuseraccordingtohisrequirements.
Exit level using
RETURN
01

System manager operating instructions
13
- - - -
, , , , ,
- - - -
, , , , ,
Default Individual valuesValue rangeDescription
PROGRAMMING HEATING CIRCUIT 1
SERVICE OPTIONS - - - -
5 °C - 40 °C
NOMINAL ROOM TEMPERATURE 1*) 20 °C
5 °C - 40 °C
NOMINAL ROOM TEMPERATURE 2 20 °C
Exit level using
RETURN
5 °C - 40 °C
NOMINAL ROOM TEMPERATURE 3 20 °C
5 °C - 40 °C
REDUCED TEMPERATURE *) 10 °C
5 °C - 40 °C
HOLIDAY TEMPERATURE 15 °C
- - - -, (-5) °C - 40 °C
DAY LIMIT TEMPERATURE 19 °C
- - - -, (-5) °C - 40 °C
NIGHT LIMIT TEMPERATURE 10 °C
0,00 - 3,00
HEATING CURVE 1,20
00, 01 (OFF / ON)
ADAPTATION 00 = OFF
00 - 20
THERMOMETER SETTING 10
(-5,0)K - (5,0)K
ROOM ADAPTATION 0.0 degrees
00, 01, 02
HEATING OPTIMISATION 00
0:00 - 3:00 (h)
MINIMUM OPENING TIME 2:00 (h)
0:00 - 3:00 (h)
REDUCTION OPTIMISATION 00:00:00 (h)
0000 - 9999
PC ENABLE 0000
Default Individual valuesValue rangeDescription
PROGRAMMING HEATING CIRCUIT 2
SERVICE OPTIONS - - - -
5 °C - 40 °C
NOMINAL ROOM TEMPERATURE 1*) 20 °C
5 °C - 40 °C
NOMINAL ROOM TEMPERATURE 2 20 °C
Exit level using
RETURN
5 °C - 40 °C
NOMINAL ROOM TEMPERATURE 3 20 °C
5 °C - 40 °C
REDUCED TEMPERATURE *) 10 °C
5 °C - 40 °C
HOLIDAY TEMPERATURE 15 °C
- - - -, (-5) °C - 40 °C
DAY LIMIT TEMPERATURE 19 °C
- - - -, (-5) °C - 40 °C
NIGHT LIMIT TEMPERATURE 10 °C
0,00 - 3,00
HEATING CURVE 0,6
00, 01 (OFF / ON)
ADAPTATION 00 = OFF
00 - 20
THERMOMETER SETTING 10
(-5,0)K - (5,0)K
ROOM ADAPTATION 0.0 degrees
00, 01, 02
HEATING OPTIMISATION 00
0:00 - 3:00 (h)
MINIMUM OPENING TIME 2:00 (h)
0:00 - 3:00 (h)
REDUCTION OPTIMISATION 00:00:00 (h)
0000 - 9999
PC ENABLE 0000
1 2
1 2

14
System manager operating instructions
Monday / Tuesday / Wednesday / Thursday / Friday: from 06:00 to 22:00
Saturday and Sunday: from 07:00 to 23:00
Value rangeDescription
PROGRAMMING TIMER HEATING CIRCUIT 1
HEATING CIRCUIT 1 PROGRAM
DEFAULT SETTINGS:
Monday / Tuesday / Wednesday / Thursday / Friday: from 06:00 to 08:00,
from 16:00 to 22:00
Saturday and Sunday: from 07:00 to 23:00
HEATING CIRCUIT 2 PROGRAM
DEFAULT SETTINGS:
Monday / Tuesday / Wednesday / Thursday / Friday: from 06:00 to 22:00
Saturday and Sunday: from 07:00 to 23:00
Value rangeDescription
PROGRAMMING TIMER HEATING CIRCUIT 2
HEATING CIRCUIT 1 PROGRAM
DEFAULT SETTINGS:
Monday / Tuesday / Wednesday / Thursday / Friday: from 06:00 to 08:00,
from 16:00 to 22:00
Saturday and Sunday: from 07:00 to 23:00
HEATING CIRCUIT 2 PROGRAM
DEFAULT SETTINGS:
Monday / Tuesday / Wednesday / Thursday / Friday: from 05:00 to 21:00
Saturday and Sunday: from 06:00 to 22:00
Value rangeDescription
PROGRAMMING TIMER DHW PRODUCTION CIRCUIT
DEFAULT SETTINGS:
Monday / Tuesday / Wednesday / Thursday / Friday: from 05:00 to 21:00
Saturday and Sunday: from 06:00 to 22:00
Value rangeDescription
PROGRAMMING TIMER DHW PRODUCTION CIRCUIT RECIRCULATION PUMP
DEFAULT SETTINGS:

System manager operating instructions
15
18 19
18 19
14 15
14 15
14 15 16 17
35
33 34
18 19 20 21 22 23
21.0 20
Servizio
Data/Ora/Vacanze
Visual Inf.
Utente
Progr.Tempo
Tecnico
Impianto
Acqua Calda
Circuito risc. I
Solare/MF
Circuito risc. II
°C
OK
1
2
1
2
>1s
+
°C
°C
°C
BUS ID 1/2/11/Mod
Run
2
1
Main switch
Thisswitchconnectsanddisconnectspowertotheboiler:
- Withtheswitchat0 ,theboilerisnotpowered
 electrically(greenindicatorlightoff).
- WiththeswitchatI ,theboilerispoweredelectrically
(greenindicatorlighton)andissetupforthe
 productionofhotwaterforheating.
Burner switch
Thisswitchconnectsanddisconnectspowertotheburner:
- Withtheswitchat0 ,theburnerisnotpowered
 electrically.
- WiththeswitchatI ,theburnerispoweredelectrically
andissetuptorunatrequestoftheheatingcontroller.
6.4 - DUAL-STAGE MASTER PANEL BOARD code 38778 (with single boiler)
14 Main switch with indicator light
16 General fuse
18 Burner switch
19 P1 system pump switch (cascade)
20 Pz1 direct zone system pump switch
21 Pz2 mixed zone system pump switch
33 Working thermostat
35 Safety thermostat
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16
System manager operating instructions
20 21
20 21
20 21
20 21
Direct zone system pump switch
Thisswitchconnectsanddisconnectspowertothedirect
zonesystempump:
- Withtheswitchat0 ,thepumpisnotpowered
 electrically.
- With the switch at I , the system pump is powered
electricallyandisreadytorun.
IMPORTANT: thesystem pumpmustalwaysbeready
torunbeforeswitchingtheburnerontoallowheattobe
dispersed.
Otherwise,thesafetythermostatintheboilerwilltrigger
whenthemaximumtemperatureisreachedwiththe
consequentneedtoberearmed.
Mixed zone system pump switch
Thisswitchconnectsanddisconnectspowertothemixed
zonesystempump:
- Withtheswitchat0 ,thepumpisnotpowered
 electrically.
- With the switch at II, the system pump is powered
electricallyandisreadytorun.
IMPORTANT: thesystem pumpmustalwaysbeready
torunbeforeswitchingtheburnerontoallowheattobe
dispersed.
Otherwise,thesafetythermostatintheboilerwilltrigger
whenthemaximumtemperatureisreachedwiththe
consequentneedtoberearmed.
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System manager operating instructions
17
35
33
Heating temperature control
Temperatureisadjustedbetweenaminimumof0°Cand
amaximumof90°C.
Forthe heatingcontrollertoworkproperly,theknobof
theworkingthermostatMUSTbeattheMAXfull-scale
(tothe“right”).
Asfarastheworkingtemperaturesettingisconcerned,
see the paragraph “PROGRAMMINGTHE HEATING
CONTROLLER”.
Thevaluesetwillappearontheheatingcontrollerdisplay.
Resetting safety thermostat
IMPORTANT: The safety thermostat is located below
the cap indicated in the figure to the side.To access it
when the boiler blocks, unscrew the plastic cap with
a screwdriver; after having reset the boiler, put the
plastic cap back on.
Thesafetythermostatcanbetriggeredwhentheboiler
overheats.
Thiscanbesolvedrstofallbyloweringtheworking
temperatureoftheboiler.
Ifthesafetydeviceoftheboilercontinues
totrigger,donottrytorestoreoperationof
theboileronyourown.
ContactanAuthorisedAssistanceCentre.

18
System manager operating instructions
18 19
18 19
14 15
14 15
14 15 16 17
35
33 34
18 19 20 21 22 23
21.0 20
Servizio
Data/Ora/Vacanze
Visual Inf.
Utente
Progr.Tempo
Tecnico
Impianto
Acqua Calda
Circuito risc. I
Solare/MF
Circuito risc. II
°C
OK
1
2
1
2
>1s
+
°C
°C
°C
BUS ID 1/2/11/Mod
Run
2
1
Main switch
Thisswitchconnectsanddisconnectspowertotheboiler
n°1:
- With the switch at 0 , the boiler n°1 is not powered
electrically(greenindicatorlightoff).
- WiththeswitchatI ,theboilern°1ispowered
 electrically(greenindicatorlighton)andissetupfor
theproductionofhotwaterforheating.
Burner switch
Thisswitchconnectsanddisconnectspowertotheburner
oftheboilern°1:
- Withtheswitchat0 ,theburneroftheboilern°1isnot
poweredelectrically.
- With the switch at I , the burner of the boiler n°1 is
poweredelectricallyandissetuptorunatrequestof
theheatingcontroller.
6.5 - DUAL-STAGE MASTER PANEL BOARD code 38778 (with boilers in cascade)
14 Main switch with indicator light
16 General fuse
18 Burner switch
19 System pump switch P1 (boiler n°1 in cascade primary ring)
20 Pz1 direct zone system pump switch
21 Pz2 mixed zone system pump switch
33 Working thermostat
35 Safety thermostat
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System manager operating instructions
19
20 21
20 21
20 21
20 21
18 19
18 19
Direct zone system pump switch
Thisswitchconnectsanddisconnectspowertothedirect
zonesystempump:
- Withtheswitchat0 ,thepumpisnotpowered
 electrically.
- With the switch at I , the system pump is powered
electricallyandisreadytorun.
IMPORTANT: thesystem pumpmustalwaysbeready
torunbeforeswitchingtheburnerontoallowheattobe
dispersed.
Otherwise,thesafetythermostatintheboilerwilltrigger
whenthemaximumtemperatureisreachedwiththe
consequentneedtoberearmed.
Mixed zone system pump switch
Thisswitchconnectsanddisconnectspowertothemixed
zonesystempump:
- Withtheswitchat0 ,thepumpisnotpowered
 electrically.
- With the switch at II, the system pump is powered
electricallyandisreadytorun.
IMPORTANT: thesystem pumpmustalwaysbeready
torunbeforeswitchingtheburnerontoallowheattobe
dispersed.
Otherwise,thesafetythermostatintheboilerwilltrigger
whenthemaximumtemperatureisreachedwiththe
consequentneedtoberearmed.
Boiler n°1 primary ring system pump switch
Thisswitchconnectsanddisconnectspowertothe
systempumpoftheprimaryringofboilern°1:
- Withtheswitchat0 ,thepumpisnotpowered
 electrically.
- With the switch at II, the system pump is powered
electricallyandisreadytorun.
IMPORTANT: thesystem pumpmustalwaysbeready
torunbeforeswitchingtheburnerontoallowheattobe
dispersed.
Otherwise,thesafetythermostatintheboilerwilltrigger
whenthemaximumtemperatureisreachedwiththe
consequentneedtoberearmed.
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System manager operating instructions
35
33
Heating temperature control
Temperatureisadjustedbetweenaminimumof0°Cand
amaximumof90°C.
Forthe heatingcontrollertoworkproperly,theknobof
theworkingthermostatMUSTbeattheMAXfull-scale
(tothe“right”).
Asfarastheworkingtemperaturesettingisconcerned,
see the paragraph “PROGRAMMINGTHE HEATING
CONTROLLER”.
Thevaluesetwillappearontheheatingcontrollerdisplay.
Resetting safety thermostat of boiler n°1
IMPORTANT: The safety thermostat is located below
the cap indicated in the figure to the side.To access it
when the boiler blocks, unscrew the plastic cap with
a screwdriver; after having reset the boiler, put the
plastic cap back on.
Thesafetythermostatcanbetriggeredwhentheboiler
overheats.
Thiscanbesolvedrstofallbyloweringtheworking
temperatureoftheboiler.
Ifthesafetydeviceoftheboilercontinues
totrigger,donottrytorestoreoperationof
theboileronyourown.
ContactanAuthorisedAssistanceCentre.