Specification Sheet

14
APPLICATION DATA
UNIT SELECTION
Select equipment that either matches or supports slightly more than
the anticipated peak load. This provides better humidity control,
fewer unit cycles, and less part−load operation.
For units used in spaces with high sensible loads, base equipment
selection on unit sensible load, not on total anticipated load. Adjust
for anticipated room wet bulb temperature to avoid undersizing the
equipment.
UNIT MOUNTING (OUTDOOR)
Refer to the unit’s installation instructions for further details.
Unit leveling − For reliable operation, units should be level in all
planes.
Clearance − Minimum clearance (see Fig. 4) must be provided
for airflow. The condensing units are designed for free−flow
application. Air inlets and outlets should not be restricted.
Unit location − A location which is convenient to installation and
not exposed to strong winds. A location that can bear the weight of
the outdoor unit and where the outdoor unit can be mounted in a
level position.
Do not install the indoor or outdoor units in a location with special
environmental conditions. For those applications, contact your
sales representative.
SYSTEM OPERATING CONDITIONS
OPERATING RANGE
MIN / MAX °F (°C)
COOLING HEATING
Outdoor DB 0 ~ 122 (-17 ~ 50) 0 ~ 86 (-17 ~ 30)
NOTE: Reference the product installation instructions for more
information.
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.
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 Additional Charge table.
ADDITIONAL CHARGE
UNIT
SIZE
TOTAL LINE
LENGTH ft. (m)
ADDITIONAL CHARGE, oz/ft. FT. (m)
Min Max
10-25
(3-8)
>25-82
(8-25)
>82-98
(25-30)
>98-164
(30-50)
9
10(3)
82(25)
None
0.1612
18 98(30) 0.16
24 164(50) 0.32 0.32 0.32