Carrier 38GXM series Installation Instructions Manual page 8

Covered conduit connection for size 18k only
Outdoor unit
Terminal Block
Conduit panel
38GXM-40GXM018, 024 & 030 Connection Diaclram
This Se ries of Connections Will be Re peated for Each Indoor Unit {A to A - B to B etc. !
L1 I L2 GND
Main
Power Ground
Supply
208/230-1-60
i
1
_IE
I ONNECTING CABLE I
OUTDOOR TO INDOOR
I Outdoor Unit Terminal Blocks I
I One Terminal Block I Power and Control Signal to
I
Two or Four Term na B ocks
I Indoor Unit Power and Control Signal I
One Terminal Block
Fig. 11 - Field Wiring
A09656a
INSTALL ALL POWER, INTERCONNECTING
WIRING, AND PIPING TO INDOOR UNIT.
1.
2.
3.
4.
Run interconnecting piping and wiring from outdoor unit to
each indoor unit (in matched pairs).
Pass interconnecting cable through hole in wall (outside to
inside).
Lift indoor unit into position and route piping and drain
through hole in wall (inside to outside). Fit interconnecting
wiring into back side of indoor unit,
Hang indoor unit on upper hooks of wall mounting plate (as
shown in Fig. 12)
A08283
Fig. 12 - Hanging Indoor Unit
5. Open front cover of indoor unit and remove field wiring ter-
minal block cover (see Fig. 13)
Field Wiring
Cover
Interconnecting
Cable
Fig. 13 - Field Wiring Cover
A08279
6. Pull interconnecting wire up from back of indoor unit and
position in close to the terminal block on indoor unit.
7. Push bottom of indoor unit onto mounting plate to com-
plete wall mount.
8. Connect wiring from outdoor unit per connection diagram
(see Fig. 11).
NOTE: Polarity of power wires must match original
connection on outdoor unit.
9. Replace field wiring cover and close front cover of indoor
unit,
10. Connect refrigerant piping and drain line outside of indoor
unit. Refer to Fig. 8 for proper installation of flare connec-
tions. Complete pipe insulation at flare connection then
fasten piping and wiring to the wall as required, Com-
pletely seal the hole in the wall.
11. Repeat steps 1 through 10 for each indoor unit,