DLFSOAH: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
5
SYSTEM REQUIREMENTS
Allow sufficient space for airflow and unit service. See Fig. 3 — on page 6 for the minimum required distances between the unit and walls or ceilings.
Table 4 — Indoor Unit Pipe Sizes
WIRING
All wires must be sized per NEC (National Electrical Code) or CEC
(Canadian Electrical Code) and local codes. See the rating plate and/or
the installation instructions of the compatible outdoor unit for MCA
(minimum circuit amps) and MOCP (maximum over current protection)
to correctly size the wires and the disconnect fuse or breakers
respectively.
Recommended Connection Method for Power and
Communication Wiring:
The main power is supplied to the outdoor unit. The field supplied 14/3
power/communication wiring from the outdoor unit to the indoor unit
consists of four (4) wires and provides the power for the indoor unit. Two
wires are high voltage AC power, one is communication wiring and the
other is a ground wire. Wiring between the indoor and outdoor unit is
polarity sensitive. The use of BX wire is NOT recommended.
If installed in a high Electromagnetic field (EMF) area and
communication issues exists, a 14/2 stranded shielded wire can be used to
replace wires 2 and 3 between the outdoor unit and indoor unit landing
the shield onto ground in the outdoor unit only.
NOTE: The main power is supplied to the outdoor unit. When
disconnecting the power of the outdoor unit, the indoor unit
would lose power. A disconnect switch is not required on the
Indoor unit side on the wiring between the Outdoor and
Indoor unit. A 3 pole disconnect may be used for extra
protection between the Indoor and Outdoor Unit.
UNIT SIZES
6K
(208/230V)
9K
(208/230V)
12K
(208/230V)
18K
(208/230V)
GAS PIPE
in 3/8” 3/8” 1/2” 1/2”
(mm) 9.52 9.52 12.7 12.7
LIQUID PIPE
in 1/4” 1/4” 1/4” 1/4”
(mm) 6.35 6.35 6.35 6.35
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
Wires should be sized based on NEC and local codes.
WAR N I N G
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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