Heatrae Sadia Amptec 95 022 001 C-400 Fitting Instructions And User Manual page 8

SERVICE
VALVE
35mm PIPE
FLOW
36 LITRE/
RETURN
MIN
FIGURE FOUR: 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 a 600 x 600 radiator.
8
22mm PIPE 28mm PIPE
FLOW FLOW
12 LITRE/ 24 LITRE/
MIN MIN
28mm PIPE 22mm PIPE
FLOW FLOW
24 LITRE/ 12 LITRE/
MIN MIN
AUTOMATIC AIR VENT
35mm PIPE
FLOW
36 LITRE/
MIN
DRAIN VALVE
EXPANSION / SAFETY
RELIEF SYSTEM
PUMP
RELAY
SYSTEM
95970136
FLOW