Universal Electronics 975 operating instructions Wiring Diagrams, L J I K M

WIRING DIAGRAMS

All wiring diagrams are for typical systems only. Refer to equipment manufacturers’ instructions for specific system wiring information.

MV 6 Y G W

E

1From heating system

2From 24 VAC transformer

3Red jumper wire (provided) See page 10 for letter identification.

1 2 3

H

O B RC RH W RH

MV W RH RC G Y O B 6

L

J I K

M

NOTE: Ensure that RED RH/RC jumper wire (provided with thermostat) is connected between thermostat’s RH and RC terminals for proper operation with this system.

Figure 2. Typical wiring diagram for heating only, two-wire, single transformer system

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