Converting 230V Units to 208V
To convert 230V units to 208V:
1.Turn electric power OFE
2.Remove the blower/electrical access panel.
3.Locate the 24V control transformer.
4.Remove wire from the terminal labeled "240V" on the 24V
control transformer and reconnect it to the 208V terminal of
the 24V control transformer.
5.Replace the electrical/compressor access panel.
Low Voltage Wiring
For access, remove the electrical control/blower access panel.
Refer to the connection wiring diagram for the applicable model
and to the instructions included with the thermostat.
Route low voltage wires through the port located on the rear panel
and up to the control box.
NOTE; If an Electric Heat Accessory is installed, see the Electric
Heat Accessory Installation manual for low voltage connections.
Thermostat Connections
The location of the thermostat has an important effect on the
operation of the unit. See the thermostat instructions for proper
connection. See FIGURE 4 for Low Voltage Wire Harness
Connections
Field Installed Equipment
Wiring to be done in the field between the unit and other devices,
or between separate devices which are field installed and located,
MUST NOT exceed the temperature limitations for type T wire
and MUST be installed in accordance with manufacturer's
instruction and applicable local codes.
Final Electrical Check
Make a final wiring check to be sure system is correctly wired.
Inspect field installed wiring and the routing to ensure that rubbing
or chafing due to vibration will not occur.
NOTE: Wiring MUST be installed so it is protected from possible
mechanical damage.
GuRE4 I Electr°nic Therm°stat L°w V°ltage wiring
Harness Connection Diagram
PHM324-42 Units
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Thermostat and subbase
Unit Control Power
PHM348-54 Units
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Thermostat and subbase
Unit Control Power
6 427 01 1101 O0
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