Specification Sheet

18
METERING DEVICES
The outdoor unit has an electronic expansion valve to manage the
refrigerant flow of the connected fan coil.
DRAIN CONNECTIONS
Install drains to meet the local sanitation codes.
See the physical dimension tables for the drain sizes.
REFRIGERANT LINES
General refrigerant line sizing:
1. The outdoor units are shipped with a full charge of R410A
refrigerant. All charges, line sizing, and capacities are based on
runs of 25 ft. (7.6 m). For runs over 25 ft. (7.6 m), review the
Long Line Applications section for the proper charge
adjustments.
2. Refrigerant lines should not be buried in the ground. If it is
necessary to bury the lines, do not bury more than 36−in (914
mm). Provide a minimum 6−in (152 mm) vertical rise to the
service valves to prevent refrigerant migration.
3. Both lines must be insulated. Use a minimum of 1/2−in.
(12.7 mm) thick insulation. Closed−cell insulation is
recommended in all long−line applications.
4. Special consideration should be given to isolating the
interconnecting tubing from the building structure. Isolate the
tubing so vibration or noise is not transmitted into the
structure.
Long Line Applications:
1. No change in line sizing is required.
2. Add refrigerant per the following table.
ADDITIONAL CHARGE TABLE
UNIT
SIZE
TOTAL LINE
LENGHT ft
ADDITIONAL CHARGE, oz/ft.
ft (m)
Min Max
10 - 25
(3 - 8)
>25 - 82
(8 - 25)
>82 - 164
(25 - 50)
9
10
82
None
0.1612
18
98
24
0.32 0.3230
164
36
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. Per the caution note, only
stranded copper conductors with a 600 volt rating and double
insulated copper wire must be used.
The use of BX cable is not recommended.
Recommended Connection Method for Power and
Communication Wiring
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 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.
Recommended Connection Method for Power and
Communication Wiring (To minimize
communication wiring interference)
PowerWiring:
The main power is supplied to the outdoor unit. The field supplied
power wiring from the outdoor unit to 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.
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
S Wires should be sized based on NEC and local codes.
S Use copper conductors only with a 600 volt rating and
double insulated copper wire.
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 the indoor unit to the 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. Ensure all
wiring is tightly connected.
S No wire should 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 conduit shall be routed through
the hole in the conduit panel.