Three Boiler Plumbing Schematic - Heatrae Sadia Amptec Installation Instructions And User Manual

22mm PIPE
FLOW
12 LITRE/
MIN
EXPANSION
SAFETY
RELIEF
SYSTEM
SERVICE
VALVE
35mm PIPE 28mm PIPE
FLOW FLOW
36 LITRE/ 24 LITRE/
RETURN
MIN MIN
FIGURE 4 : THREE BOILER PLUMBING SCHEMATIC
A typical plumbing schematic connecting 3 x 1200 boilers together.
NOTE the increase in pipework sizing to ensure proper flow through the boilers.
Ensure there are no restrictions in the heating circuit such as thermostatic radiator valves etc.
Expansion vessel etc. has not been shown on this schematic.
For 2 x 1200 boilers, 28mm pipework flow and return is required.
A bypass must be fitted. Preference should be made for the equivalent of a 600 x 600 radiator per boiler.
28mm PIPE 35mm PIPE
FLOW FLOW
24 LITRE/ 36 LITRE/
MIN MIN
22mm PIPE
FLOW
DRAIN VALVE
12 LITRE/
MIN
AUTOMATIC
AIR VENT
150mm
min
PUMP
FLOW
RELAY
SYSTEM
95970136
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