Page 32 IM-738
Reconnecting Power and Control Wiring
Units that ship split at the condenser section have complete
wire harnesses for power and control wiring just as if they
were a package. However, if the installed harness terminates
in both the condensing section and air handler section and
crosses the split, then only the condensing end is factory con-
nected. The harness is then coiled and strapped down for
shipment. The field must un-coil the wire and make the air
handler termination per the wiring schematic.
1. Size 15-30- The wire is coiled in the condensing section
control box. The condensing section control box has a
hole in the side that lines up with a 3" nipple in the side of
the air handling control box (see Figure 36). Uncoil the
wires, run them out of the hole in the condensing section
box, into the nipple in the air handling box, and make the
proper connections.
2. Size 36-40 - The wire is coiled in the rail of the condensing
section and you access it by removing the rail cover, per
Figure 38.
a. Run the power wire into the FB7 fuse box and connect
to the load size of the fuses.
b. Run control wire into the 3" nipple on air handling con-
trol box (see Figure 36) and make connections.
3. Size 45 to 60 - The wire is coiled in the rail of the condens-
ing section. Remove the rail cover per Figure 38 and run
the wire into the 3" nipple on the air handling control box.
a. Connect power wire to the terminal blocks on the side
of the air handling control box per.
b. Connect control wire per the wiring schematic.
4. Size 70 to 75 - The wire is coiled in FB 1-4 fuse box on the
condensing section. Remove the end cover of the fuse box
and run the wire into the 3" nipple on the air handling con-
trol box.
a. Connect power wire to the terminal blocks on the side
of the air handling control box per Figure 37.
b. Connect control wire per the wiring schematic.
Figure 36. Connecting Power and Control Wiring (015-040)
Figure 37. Connecting Power and Control Wiring (045-075)
Figure 38. Remove Vertical Raceway
3 " N i p p l e
C o n d e n s e
S e c t i o n
F i e l d c o n n e c t e d
i r i n g t h r o u g h
h e N i
l e .
U n i t A i r
F l o w
M a i n
C o n t r o l
B o x
3 " N i p p l e
C o n d e n s e
S e c t i o n
P o w e r b l o c k s m o u n t e d
h e r e o n 0 4 5 c , 0 5 0 c , a n d
0 6 0 c s p l i t a t c o n d e n s e r .
F i e l d i n s t a l l e d w i r e s
f r o m c o n d e n s e r .
F a c t o r y w i r i n g
t o d i s c o n n e c t o r
p o w e r b l o c k i n m a i n
c o n t r o l b o x .
U n i t A i r
F l o w
M a i n
C o n t r o l
B o x
C o n t r o l w i r e s b u n d l e d a n d
t a p e d i n s i d e t h i s r a c e w a y
P o w e r w i r e s b u n d l e d a n d
t a p e d i n s i d e t h i s r a c e w a
R e m o v e
h i p p i n g
o v e r
C o n d e n s e r
S e c t i o n
R e m o v a b l e v e r t i c a l
r a c e w a y s h i p s
w i t h c o n d e n s e r
s e c t i o n s
A i r H a n d l e r
S e c t i o n