Справочник Пользователя для Rheem Gas Heavy Duty Water Heater Models 265 Litre and 275 Litre

30 

POWER FLUE EXTERNAL CONTROLS – INTERMITTENT OPERATION 
 

 

 
 
 

INTERLOCK TERMINAL

621 SERIES RHEEM

 

 

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 H.2.2.6 of 

AS5601 – 2004, 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 

For a single water heater 

installation, connect 1 and 2 

directly to the water heater

2 

1 

2

2

2 

1

1

1