Rheem 265 litre Owner's Manual And Installation Instructions page 31

POWER FLUE EXTERNAL CONTROLS – INTERMITTENT OPERATION
Notes
1. Power source for the water heater, fan and control
circuit must be from the same circuit.
2. R1 monitors return signal.
3. R2 monitors alarm signal.
4. T1 to be set for 20-30 seconds.
5. Meets requirements of Clause H2.2.6 of AS5601 or
Clause H2.2.5 of AS/NZS 5601.1, as applicable under
local regulations, providing lockout in the event of flue
product flow failure.
6. Where intermittent fan operation is utilised, it is
necessary to run the fan for some time after
combustion ceases to prevent flue spillage of
combustion products. T2 to be set for 5 minutes.
jumper lead must be
removed for connection
to a power flue
2 1
INTERLOCK TERMINAL
621 SERIES RHEEM
WIRING DIAGRAM - POWER FLUE CONNECTION
INTERMITTENT FAN OPERATION-MULTIPLE WATER HEATER
Rheem Heavy Duty Gas Water Heaters-621 Series
Raypak B Type Water Heaters-B0507 to B4224
For a single water heater installation, connect
1 and 2 directly to the water heater
2
1
INTERLOCK TERMINAL
multiple water heater installation
31
CONNECTIONS – ELECTRICAL
1
1 2
RAYPAK B TYPE
2