82
11 - GENERAL MAINTENANCE AND CLEANING
11.6 Combi (DHW)
Install an appropriate water treatment system compliant with
current regulations.
For installations using well water or areas with sediment in the water
supply, a sediment filter is manufacturer recommended.
LEGEND
A
DHW exchanger retaining screw
B
DHW priority sensor with filter
C
Boiler/system drain tap (125C unit only)
E
DHW temperature NTC probe
F
Low water pressure sensor
11.7 The Cold Water Filter
Boiler is fitted with a cold water filter located on DHW
hydraulic assembly (
B
). To clean:
•
Drain domestic hot water system. Drain is field
supplied/installed.
• Remove nut on DHW priority sensor unit using 18mm
wrench. (B)
•
Remove flow sensor and filter.
• Remove any debris.
•
Replace nut and filter.
11.7 Maintenance
• 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 pressure. See page 4 for
acceptable pressure.
•
Turn off boiler.
•
Check water and flush if necessary. Clean filters in heating
return and supply water isolating valves.
• Repressurize the system.
11.8 Final Assembly
• If boiler is to be left in service with the User, set controls
and room thermostat.
• If boiler is not to be handed over immediately, close boiler
gas service valve and turn off electrical supply.
• If there is possibility of boiler being left during frost
conditions drain boiler and system. See section 11.3
- Component Replacement Or Periodic Cleaning.
Manufacturer recommends attaching a label to the boiler
drawing attention to the fact that the system has been
drained.
Model GMCB150
Model GMCB200
B
A
Hydraulic Assembly (B)
F
NOTICE
When replacing and/or cleaning “O-rings” on hydraulic
assembly (DHW), use only a food grade lubricant, not
oil or grease.
E
C
E
F
A
B
PN 240012363 REV. A [08/31/2018]
Содержание Green Mountain GMCB150
Страница 51: ...51 8 ELECTRICAL CONNECTIONS FIGURE 8 13A WIRE DIAGRAM GMCB150 COMBI BOILER PN 240012363 REV A 08 31 2018 ...
Страница 52: ...52 FIGURE 8 13B 8 ELECTRICAL CONNECTIONS LADDER DIAGRAM GMCB150 COMBI BOILER PN 240012363 REV A 08 31 2018 ...
Страница 55: ...55 8 ELECTRICAL CONNECTIONS FIGURE 8 15A WIRE DIAGRAM GMCB200 COMBI BOILER PN 240012363 REV A 08 31 2018 ...
Страница 56: ...56 8 ELECTRICAL CONNECTIONS FIGURE 8 15B LADDER DIAGRAM GMCB150 COMBI BOILER PN 240012363 REV A 08 31 2018 ...
