15
TYPICAL SYSTEM DESIGN
Note: The boiler incorporates an automatic bypass, hence no other
system bypass is necessary. However, it is recommended to fit TRV’s on
all radiators except in rooms with a room thermostat.
If no room thermostat is fitted, at least one radiator (preferable in the
bathroom) must be permanently open, i.e. fitted with two lockshield
valves.
•
APPLIANCE
•
CH FLOW
•
•
DOMESTIC HOT
WATER OUT
•
GAS SUPPLY
•
MAINS IN
•
CH RETURN
•
RADIATOR WITH
2 LOCKSHIELD VALVES
IN OPEN POSITION
PRESSURE RELIEF VALVE
OUTLET TO DRAIN
•
DOMESTIC HOT
WATER
•
DOMESTIC COLD
WATER
•
PRESSURE REDUCING
VALVE IF REQUIRED
•
BS STOP VALVE
(FIXED SPINDLE)
•
MAINS WATER
•
DRAIN COCK
AT LOWEST POINT(S)
OF SYSTEM
11
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