Service manual

SECTION 10: WIRING
23 of 55
10.5 UHD[T][X][S][R] Series Internal Wiring Diagram for Two Stage Gas Valves
1
W2
HIGH/LOW CONTROL
HIGH
LOW
COMMON
IMPORTANT:
For field wiring into service junction box, or if any of the original wire supplied with the heater
must be replaced, it must be replaced with wiring material having a temperature rating of at least 221° F
(105° C) and 600 V. For supply connections, use No. 14 AWG or larger wires.