LG LP090HEM - Manual (Page 10)

10
GL GH O W Y R C LO LI
Front Desk Switch
LO LI GL GH O W Y R C
Low Fan
High Fan
Reversing Valve
Heater
Compressor
24 Volt-L
24 Volt-N
Wiring Schematic for
Remote Heat Pump
Wiring Schematic for
Straight Cool Unit.
Additional Controls
Operating
Instructions
When the pair wire is connected to the connector LOand LI, the unit can be turned ON or OFF with a switch
located at the Front Desk Control panel. When the front desk switch is ON, the fan operate according to the
condition of setting without working compressor and heater. When the front desk switch is OFF, the unit can
operate according to the setting of controls.
When the wires are connected, the unit will be controlled by a remote
wall thermostat.
The thermostat connections supply the 24 Volt AC. When you install
the digital / electronic thermostat, you must set it to the 24 Volt AC.
See the installation Instruction in this manual for the Remote Wall
Thermostat.
Front Desk Control
Remote Wall Thermostat
Remote/Local Control
Energy Saver
When remote/local switch #1 is on, it allow the unit to operate by the control of Remote Wall Thermostat.
The unit control by knobs are not available.
The energy saver switch #2 is on. This switch is set at continuous fan to provide continuous fan operation in cool
or heat modes. When the switch is off the continuous fan allows continuous circulation of room air and make the
more balanced temperature of the room. When the switch is on the fan is on or off with the compressor or with
the heater.
Wire # AWG Maximum Length
#22 600ft(180m)
#20 900ft(270m)
#18 1500ft(450m)
#16 2000ft(610m)
The following figures show wiring
schematics for heat pump and
straight cool units with electric
heat, respectively.
NOTICE