Wiring Diagrams - Robertshaw 9520 User Manual

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.
Typical heat pump with cool active reversing valve and auxiliary/emergency heat.
C L
Typical heat pump with heat active reversing valve and auxiliary/emergency heat.
C L
Typical heat pump with heat active reversing valve and auxiliary/emergency heat.
Does not have separate wire for emergency heat (jump W2 & E).
C L
Typical heat pump with cool active reversing valve, auxiliary/emergency heat
and second stage of cooling. System fault indicator connected (L terminal).
C L
FIGURE 4
9520 WIRING SAMPLE #1
R Y2 Y1
9520 WIRING SAMPLE #2
R Y2 Y1
9520 WIRING SAMPLE #3
R Y2 Y1
9520 WIRING SAMPLE #4
R Y2 Y1
E G
E G
E G
Jumper
E G
5
W2 O
W2 O
W2 O
W2 O
B
B
B
B