INDOOR
THERMOSTAT
RETURN
AIR
CONNECTING GROUND LEAD TO UNIT GROUND
Refer to Fig. 8 and 9. Connect the ground lead to the chassis using the unit ground in the control box.
ROUTING CONTROL POWER WIRES
TOP COVER
Power Wiring
Control Wiring
Condenser Airflow
Evaporator Airflow
POWER AND
ENTRY
COMPOSITE
BASEPAN
CONDENSATE
DRAIN
CONNECTION
*Separate disconnect per NEC (National Electrical Code) required for electric heater when single- point conection is not used.
FROM
POWER
SOURCE
DISCONNECT PER NEC* (UNIT AND ELECTRIC HEATER)
C00008
Form a
Route thermostat wires through grommet providing a
The unit transformer supplies
ACCESSORY ELECTRIC HEAT WIRING
C00008
Fig. 4—Typical installation
1” (25mm) MIN.
TRAP
OUTLET
2” (50mm) MIN.
C99013
Fig. 5—Condensate Trap (Using Tubing)
TRAP
OUTLET
1" min.
2" min.
C00009
Fig. 6—PVC Condensate Trap
Table 3—Minimum Airflow for Safe Electric Heater
Operation (CFM)
SIZE | 024 | 030 | 036 | 042 | 048 | 060 |
Cfm | 600 | 750 | 900 | 1050 | 1200 | 1500 |
UNIT DAMAGE HAZARD
Failure to follow this caution may result in unit component damage. Operation of unit on improper line voltage consti- tutes abuse and may cause unit damage that could affect warranty.
ROUTING POWER LEADS INTO UNIT
Use only copper wire between disconnect and unit. The high- voltage leads should be in a conduit until they enter the unit; conduit termination at the unit must be watertight. Run the
Refer to accessory electric heat installation instructions for infor- mation on installing accessory electric heat. Accessory electric heat wiring is shown in Fig. 11A, 11B, & 11C.
PRE-START-UP
FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD Failure to observe the following warnings could result in serious injury, death and/or property damage:
1.Follow recognized safety practices and wear protective goggles when checking or servicing refrigerant system.
2.Do not operate compressor or provide any electric power to unit unless compressor terminal cover is in place and secured.
3.Do not remove compressor terminal cover until all electri- cal sources are disconnected and lockout tag is installed.
4.Relieve all pressure from both high- and
5.Never attempt to repair soldered connection while refrig- erant system is under pressure.
6.Do not use torch to remove any component. System contains oil and refrigerant under pressure. To remove a component, wear protective goggles and proceed as fol- lows:
a.Shut off electrical power to unit and install lockout tag.
b.Relieve all refrigerant from system using both high- and
c.Cut component connecting tubing with tubing cutter and remove component from unit.
d.Carefully unsweat remaining tubing stubs when neces- sary. Oil can ignite when exposed to torch flame.
Use the
1.Remove all access panels.
2.Read and follow instructions on all DANGER, WARNING, CAUTION, and INFORMATION labels attached to, or shipped with unit.
Make the following inspections:
a.Inspect for shipping and handling damages such as broken lines, loose parts, disconnected wires, etc.
6