Rheem RSNM SERIES, Installation Instructions Manual

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11
B. POWER WIRING AND ELECTRIC HEATER KIT INSTRUCTIONS
1. Turn off power to unit.
2. Remove control box access panel.
3. Remove unit indoor section top cover.
4. Remove wire notch cover from control bulkhead and discard. Retain screw.
5. Remove heater element cover plate from blower outlet opening and discard. Retain
screws.
6. Mount heater fuse block assembly in location indicated with the three included
screws.
7. Route wire harness assembly through wire notch in control bulkhead and mount ele-
ment assembly in blower outlet opening with screws previously retained.
8. Center wire routing plate over notch in blower bulkhead and secure with screw previ-
ously retained.
9. Route and tie wiring as shown in Figure 5. Wiring must not contact moving parts or
uninsulated electrical connections.
10. Replace unit indoor top cover.
11. Connect power and control wiring as indicated below:
a. Single-point wiring: Connect high voltage field power leads to heater kit fuse
block and connect included unit power pigtails from heater kit fuse block to unit
contactor L1 and L3 connections. Connect ground lead to ground lug on heater kit
fuse block.
b. Dual-circuit wiring: Remove unit power pigtails from heater kit fuse block and
discard. Connect one set of high voltage field power circuit leads to the heater kit
fuse block and connect ground lead to ground lug on heater kit fuse block.
Connect the second set of high voltage field power leads to L1 and L3 on the unit
contactor. Connect ground lead to ground lug on control box bulkhead.
c. Connect heater kit control plug to receptacle in control box.
12. Replace control box access panel.
13. Restore power to unit and verify proper unit and heater kit operation.
C. CONTROL WIRING (Class II)
1. Do not run low voltage wiring in conduit with power wiring.
2. Control wiring is routed through the 7/8" hole corner adjacent to the control box.
See Electrical Connections, Figure 1. Use a minimum #18 AWG thermostat wire.
For wire lengths exceeding 50', use #16 AWG thermostat wire. The low voltage
wires are connected to the unit pigtails which are supplied with the unit in the low
voltage connection box located within the unit control box. See Figure 5.
3. Figure 6 shows representative low voltage connection diagrams. Read your ther-
mostat installation instructions for any special requirements for your specific ther-
mostat.
NOTE — Units installed in Canada require that an outdoor thermostat (30,000
min. cycles of endurance) be installed and be wired with C.E.C. Class I wiring.
!
WARNING
TURN OFF ELECTRIC POWER AT
THE FUSE BOX OR SERVICE
PANEL BEFORE MAKING ANY
ELECTRICAL CONNECTIONS.
ALSO, THE GROUND CONNECTION
MUST BE COMPLETED BEFORE
MAKING LINE VOLTAGE CONNEC-
TIONS. FAILURE TO DO SO CAN
RESULT IN ELECTRICAL SHOCK,
SEVERE PERSONAL INJURY OR
DEATH.