65
11 - GENERAL MAINTENANCE AND CLEANING
11.6 Hydraulic Unit (DHW)
For special areas, where water is harder than 200 ppm or 12
grains/ gallon, install polyphosphate dispenser or equivalent
treatment system, compliant with current regulations.
LEGEND
A
DHW exchanger fixing screw
B
DHW priority sensor with filter
C
Boiler/system drain tap (150 unit only)
(
C-1 & C-2:
access to tap
C
- bottom of boiler)
E
DHW temperature NTC probe
F
Low water cutoff
11.7 Cleaning The Cold Water Filter
Boiler is fitted with cold water strainer located on DHW
hydraulic assembly (
B
). To clean:
• Drain domestic hot water system. (C - 115 & 150)
•
165 Drain is field supplied/installed.
• Remove nut on DHW priority sensor unit using 18 mm
wrench. (B)
•
Pull out flow sensor and its filter.
• Remove any impurities.
11.8 Final Commissioning After Annual Service
• Allow heating system to heat. Balance the system to
achieve temperature difference across heating supply and
return pipes at the boiler.
• Check system for proper volume and pressure. See page 4
for acceptable volume and pressure.
•
Turn off boiler.
•
Thoroughly flush water pipe work. Clean filters in heating
return and supply water isolating valves.
• Repressurize the system.
11.9 Final Assembly
• Place front jacket in position on boiler. Secure in position
at bottom using screws previously removed.
• If boiler is to be left in service, set controls and room
thermostat.
•
If boiler is not to be left in service, turn off gas and
electrical supply.
• If there is possibility of boiler being left during freezing
conditions, drain boiler and system. See section 11:4
Draining the boiler. Manufacturer recommends attaching
a label to the boiler drawing attention to the fact that the
system has been drained.
Model DCC-115 & 150
Model DCC-205
B
A
Hydraulic Assembly (B)
F
E
NOTICE
When replacing and/or cleaning “O-rings” on hydraulic
assembly (DHW), use only Molykote 111 as a lubricant,
not oil or grease.
240013501 REV A [03/15/2022]
Содержание Dunkirk DCB-100
Страница 2: ...DCC 205...
Страница 4: ...DCB 165...
Страница 79: ...75 A 2 MODEL 75 100 Heat Only APPENDIX A WIRING DIAGRAMS 240013501 REV A 03 15 2022...
Страница 80: ...76 APPENDIX A WIRING DIAGRAMS A 2 MODEL 125 Heat Only 240013501 REV A 03 15 2022...
Страница 81: ...77 APPENDIX A WIRING DIAGRAMS A 3 MODEL 165 Heat Only 240013501 REV A 03 15 2022...
Страница 82: ...78 APPENDIX A WIRING DIAGRAMS A 1 MODEL 115 Combi 240013501 REV A 03 15 2022...
Страница 83: ...79 APPENDIX A WIRING DIAGRAMS A 4 MODEL 150 Combi 240013501 REV A 03 15 2022...
Страница 84: ...80 APPENDIX A WIRING DIAGRAMS A 5 MODEL 205 Combi 240013501 REV A 03 15 2022...
Страница 85: ...81 NOTES 240013501 REV A 03 15 2022...
Страница 86: ...82 NOTES 240013501 REV A 03 15 2022...
Страница 120: ...32 PN 240011430 REV Q 03 15 2022 CIRCULATOR CONNECTIONS WIRING DIAGRAM SINGLE ZONE CIRCULATOR WIRING USING ARGO AR822 II...
Страница 121: ...33 PN 240011430 REV Q 03 15 2022 75 100 HEAT ONLY WIRING DIAGRAM MODEL 75 100 HEAT ONLY...
Страница 122: ...34 PN 240011430 REV Q 03 15 2022 MODEL 125 HEAT ONLY 125 HEAT ONLY WIRING DIAGRAM...
Страница 123: ...35 PN 240011430 REV Q 03 15 2022 MODEL 165 HEAT ONLY 165 HEAT ONLY WIRING DIAGRAM...
Страница 124: ...36 PN 240011430 REV Q 03 15 2022 115 COMBI WIRING DIAGRAM MODEL 115 COMBI...
Страница 125: ...37 PN 240011430 REV Q 03 15 2022 MODEL 150 COMBI 150 COMBI WIRING DIAGRAM...
Страница 126: ...38 PN 240011430 REV Q 03 15 2022 MODEL 205 COMBI 205 COMBI WIRING DIAGRAM...
Страница 132: ...44 PN 240011430 REV Q 03 15 2022 LOW WATER CUTOFF DETAIL LOW WATER CUTOFF NO NO YES...
Страница 137: ...49 PN 240011430 REV Q 03 15 2022 3 FAULT SOLUTION SECTIONS...
