Phau Ntawv Qhia
12
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment dam-
age or improper operation. Improper wiring may damage unit
electronics. Common busing is not permitted. Damage or
erratic operation my result.
Use terminal 4-way for heat pump connection only. Sug-
gested set compressor protection time is more than 3
minutes in the wall thermostat. If set less than 3 minutes,
the compressor will restart delay 3 minutes still.
Wall Thermostat must be heating changeover 4-way valve.
For thermostats that have only one fan speed output (on
or auto), the fan speed is determined by how the terminal
connector is wired. If Low fan is desired, wire the G output
from the thermostat to (LOW-FAN) on the units terminal
block. If High fan is desired, wire the G output from the
thermostat to (HI-FAN) on the units terminal block.
The range of set temperature of wall thermostat must be
in consonance with the range of DIP switch setting. Wall
Thermostat must be set the type properly in consonance
with the unit type: heat pump or no heat pump.
If the Wall Thermostat has only one electrical heater output,
connect the two terminals of HEAT 1 and HEAT 2, the unit
can operate two electrical heaters (only for the unit has two
electrical heaters). Otherwise operate one electrical heater.
Please do not remove the control panel.
Front Desk Control
The controller can handle a switch signal from FC(L)
and FC(N) input, called front desk control. Input must be
24VAC. If system doesn’t receive a 24VAC signal, it will
turn unit o; otherwise, the unit runs in normal control. The
DIP switch can control the FRONT DESK CONTROL fea-
ture. The DIP switch is on the DOWN position, the unit will
be turn o; otherwise the unit runs in normal control. See
Figure B.
INSTALLATION
How to Install the Unit:
CAUTION
There are sharp edges that can cause serious cuts. When
lifting the air conditioner, it is HEAVY. Use two people to lift.
• For existing sleeve, you should measure the wall
sleeve dimensions.
• Install the new air conditioner according to these in-
stallation instructions to achieve the best performance.
All wall sleeves used to mount the new air conditioner
must be in good structural condition and have a rear
grille that securely attaches to the sleeve or the ange
of the sleeve to secure the new air conditioner.
• To avoid vibration and noise, make sure the unit is
installed securely and rmly.
• When installing the sleeve,make certain there is noth-
ing within 20 of the back that would interfere with heat
radiation and exhaust air ow. (See Figure 6)
Figure 6
Preparation of Sleeve Assembly (Optional)
Refer to the installation instruction of sleeve assembly for
details.
Preparation of Rear Grill Assembly (Optional)
Refer to the installation instruction of rear grille assembly for
details.
Unit Installation
Carefully remove shipping tapes from the front panel (See
Figure 7).
Remove the front panel (See Figure 8).
Remove the shipping screw from the vent door (See Figure 9).