UHD S
TANDARD
D
UCT
F
URNACE
I
NSTALLATION
O
PERATION AND
S
ERVICE
M
ANUAL
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10.6 UHD[T][X][S][R] Series Ladder Wiring Diagram for Two Stage Gas Valves
HIGH
STAGE
NOTE:
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 105° C
(221° F) and 600 volts. For supply connections use No. 14 AWG or larger wires.
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