Friedrich RT4 - Manual (Page 11)

9
Wiring Diagram
NOTE: B terminal used on heat pump models only
C
R
W
Y
B
G
C
R
W
Y
B
O
G
T
H
E
R
M
O
S
T
A
T
F
R
I
E
D
R
I
C
H
P
T
A
C
HARDWIRED