Carrier 38MHRBC12AA1 Installation Instructions Manual page 10

CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Excessive torque can break the flare nut depending on
installation conditions.
INSTALL ALL POWER AND INTERCONNECTING
WIRING TO OUTDOOR UNITS
1. Mount the outdoor power disconnect.
2. Run the power wiring from the main box to disconnect per
NEC and local codes.
3. Remove the field wiring cover from the unit by loosening
the screws.
4. Remove the caps on the conduit panel.
5. Connect the conduit to conduit panel (see Fig. 12).
6. Properly connect both the power supply and control lines
to the terminal block per the connection diagram for the
appropriate unit capacity and voltage.
7. Ground the unit in accordance with NEC and local electrical
codes.
8. Use the lock nuts to secure the conduit.
9. Reinstall the field wiring cover.
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
S Be sure to comply with local codes while running wire
from indoor unit to outdoor unit.
S Every wire must be connected firmly. Loose wiring may
cause the terminal to overheat or result in unit
malfunction. A fire hazard may also exist. Therefore,
ensure all wiring is tightly connected.
S No wire should be allowed to touch the refrigerant
tubing, compressor or any moving parts.
S Disconnecting means must be provided and shall be
located within sight and readily accessible from the air
conditioner.
S Connecting cable with the conduit shall be routed
through hole in the conduit panel.
Outdoor unit
Terminal Block
Fig. 12 - Field Wiring
DRAIN CONNECTIONS
Install drains must meet local sanitation codes.
Install the outdoor unit drain joint
Fit the seal into the drain joint, then insert the drain joint into the
base pan hole of the outdoor unit. Rotate 90
them. Connect the drain joint with an extension drain hose to avoid
condensate from draining off the outdoor unit during heating
mode.
Images are for illustration purposes only.
In cold climates, ensure the drain hose is as vertical as
possible to ensure swift water drainage.
If water drains too slowly, it can freeze in the hose and flood
the unit.
NOTE: Basepan built−in with multiple holes for proper draining
during defrost. For applications where it is required to seal these
holes, and re−direct the condensate drain, rubber plugs are
available through RCD.
Model Number
38MHRBC12AA1
38MHRBC12AA3
38MHRBC18AA3
38MHRBC24AA3
38MHRBQ12AA1
38MHRBQ09AA3
38MHRBQ12AA3
38MHRBQ18AA3
38MHRBQ24AA3
Conduit panel
Conduit
A07455
10
Seal Drain joint
Base pan
Fig. 13 - Drain Joint
CAUTION
!
Table 8—Rubber Plugs
Basepan Base
Outdoor Unit
Rubber Plugs
RCD Part Number
12600801A00077
_
to securely assemble
Base pan hole
Seal
Drain
joint
Quantity per unit
12
25
12
13
25