507296-01
Page 9 of 13
Issue 1650
system charge, evacuate to 500 microns, and weigh in
refrigerant to nameplate charge. It is critical that the exact
charge is re-installed. Failure to comply will compromise
system performance.
If unit performance is still questionable, check for
refrigerant related problems, such as blocked coil or
circuits, malfunctioning metering device or other system
components.
Model
Suction
Sup/- 3°
Liquid
Subc/- 2°
2 Ton
10
2.5 Ton
14
3 Ton
13
3.5 Ton
12
4 Ton
14
5 Ton
17
Based on outdoor ambient temperature of 82°F, and indoor
entering air of 80°F db, 67°F wb.
Table 4. Air Conditioner Unit Cooling System
Performance Values
Model
Suction
Sup/- 3°
Liquid Subcooling
+/- 2°
2 Ton
18
2.5 Ton
16
3 Ton
14
3.5 Ton
9
4 Ton
8
5 Ton
5
Based on outdoor ambient temperature of 82°F, and indoor
entering air of 80°F db, 67°F wb.
Table 5. Heat Pump Cooling System Performance
Values
Model
Liquid Subc/- 2°
2 Ton
25
2.5 Ton
15
3 Ton
11
3.5 Ton
22
4 Ton
24
5 Ton
28
Based on outdoor ambient temperature of 47°F, and indoor
entering air of 70°F db.
Table 6. Heat Pump Heating System Performance
Values
Maintenance
Before performing maintenance operations on the
system, shut off all electrical power to the unit. Turn off
accessory heater power switch if applicable. Electrical
shock could cause personal injury or death.
WARNING
Periodic inspection and maintenance normally consists of
changing or cleaning the filters and cleaning the outdoor
coil. On occasion, other components may also require
cleaning.
Filters
Filters are not supplied with the unit. Inspect once a month.
Replace disposable or clean permanent type as necessary.
Do not replace permanent type with disposable.
Motors
Indoor and outdoor fan and vent motors are permanently
lubricated and require no maintenance.
Some models may be equipped with a permanent magnet,
constant torque indoor blower motor. These motors remain
energized and are controlled by 24V signals. For high
static applications, use tap 3 for cooling speed and tap
5 for heating speed. Refer to the heater install label for
limitations to blower tap selection on heating speeds.
Outdoor Coil
Dirt and debris should not be allowed to accumulate on
the outdoor coil surface or other parts in the air circuit.
Cleaning should be as often as necessary to keep the coil
clean. Use a brush, vacuum cleaner attachment, or other
suitable means. If water is used to clean the coil, be sure
the power to unit is shut off prior to cleaning. Care should
be used when cleaning the coil so that the coil fins are not
damaged.
