Robertshaw 9520 User Manual Page 5

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11. Terminal screws are loosened. Insert wires into terminal strip
(Figure 4) matching the label to the corresponding terminal
(see Wiring Diagrams below). Tighten screws.
5
Typical heat pump with cool active reversing valve and auxiliary/emergency heat.
OB
9520 WIRING SAMPLE #1
Y1 E G W2CLRY2
Typical heat pump with heat active reversing valve and auxiliary/emergency heat.
9520 WIRING SAMPLE #2
CLRY2Y1EGW2OB
Typical heat pump with heat active reversing valve and auxiliary/emergency heat.
Does not have separate wire for emergency heat (jump W2 & E).
9520 WIRING SAMPLE #3
BY1 E G W2CL ORY2
Jumper
Typical heat pump with cool active reversing valve, auxiliary/emergency heat
and second stage of cooling. System fault indicator connected (L terminal).
EG OB
9520 WIRING SAMPLE #4
CW2LRY2Y1
FIGURE 4
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