DLCLRC: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
13
Step 6 - Electrical Connections
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.21).
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.
Fig. 21 —Field Wiring
WIRING
All wires must be sized per NEC (National Electrical Code) or CEC (Canadian
Electrical Code) and local codes. Use Electrical Data table MCA (minimum
circuit amps) and MOCP (maximum over current protection) to correctly size
the wires and the disconnect fuse or breakers respectively.
SIZES 36-58 RECOMMENDED CONNECTION METHOD
FOR POWER AND COMMUNICATION WIRING
Power and Communication Wiring: The main power is supplied to the
outdoor unit. The field supplied power wiring from the outdoor unit to the
indoor unit consists of three (3) wires and provides the power for the
indoor unit. Two wires are high voltage AC power and one is a ground
wire. To minimize voltage drop, the factory recommended wire size is 14/
2 stranded with a ground.
Communication Wiring: A separate shielded stranded copper conductor
only, with a 600 volt rating and double insulated copper wire, must be
used as the communication wire from the outdoor unit to the indoor unit.
Please use a separate shielded 16GA stranded control wire.
Table 8 — Wiring Sizes 36-58
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or
improper operation.
Be sure to comply with local codes while running wire from
indoor unit to outdoor unit.
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.
No wire should be allowed to touch the refrigerant tubing,
compressor or any moving parts.
Disconnecting means must be provided and shall be located within
sight and readily accessible from the air conditioner.
Connecting cable with the conduit shall be routed through hole in
the conduit panel.
CAUTION
Wire Cover
Over 1.57in.(40mm)
Terminal block
Conduit panel
Conduit fitting
Connecting cable
Select the appropriate conduit opening for the
wire size used.
An approved and listed fitting must be used to securely affix
conduit in accordance with NEC and local codes.
WARNING
Cable Cable Size Remarks
Power
Connection Cable
14AWG 2 wire + Ground 1Φ 208/230 V
Communication
Cable
16AWG
2 wire stranded shielded
control wire
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or
improper operation. Wires should be sized based on NEDC and
local codes.
WARNING
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or
improper operation. Be sure to comply with local codes while
running wire from the indoor unit to the outdoor unit. 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.
Ensure all wiring is tightly connected.
No wire should touch the refrigerant tubing, compressor or any
moving parts. Disconnecting means must be provided and shall be
located within sight and readily accessible from the air conditioner.
Connecting cable with conduit shall be routed through the hole in
the conduit panel.
CAUTION
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