Electrical Connections - Rheem STID30 Instruction Manual

SECTION IV: INSTALLATION (cont .)

eleCTrICal ConneCTIons

Figure 9: Boiler Maintaining 180°F
Indirect
Aquastat
L1 HOT
120 VOLT
L2 NEUTRAL
Figure 9: Boiler Maintaining 180°F
Figure 10: Cold Start Boiler
L1 HOT
120 VOLT
L2 NEUTRAL
Indirect
Aquastat
Burner
Control
Figure 10: Cold Start Boiler
Figures 9 and 10 are general wiring diagrams.
Indirect
For a maintaining temperature boiler, Figure 9
Circulator
should closely match your system. For cold start
boilers your wiring may resemble Figure 10, but will
vary depending on the boiler type and controls or
relays used. It is not possible to list all wiring
variations here. When connecting to a cold start
boiler, always remember that in principle an indirect
water heater operates as another heating zone. The
difference is when the indirect water heater calls for
heat, the indirect water heater circulator must start
rather than opening a zone valve; the system
circulator stays off; and the boiler must light to
reach high limit.
WIRING NOTES:
1. Dashed lines indicate low voltage (24 VAC)
Indirect
2. Use jumper wire between terminals #1 and #3 on
R845 relay
Circulator
THERMOSTAT SPECIFICATIONS:
Thermostats can operate at low or line voltages.
24 volt
R845 Relay
120 volt
or Equivalent
240 volt
This equipment must be properly grounded to
prevent a potential shock hazard, and to reduce
deterioration of the anode due to electrolysis. Refer
to local electrical codes and ordinances.
N/A
8 amp
5 amp
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