OPERATION INSTRUCTION
S
-
2
-
To access the control- terminal connections, remove
the front case panel by removing the filter, taking
out the four front screws, the upper two screws from
the top of the panel and the shipping screws on each
side, if present. (Discard the four side shipping
screws, if present).
Controls-terminal connections
R FD GH B
Y W GL C
Red-24VAC
Purple
-LS
control
Green-High
fan
speed
Blue-Reversing
valve
Yellow-Compressor
White-Heater
Orange
-Low
fan
speed
Black
-Common
ground
side
shipping
screws
side
shipping
screws
ON/OFF switches
The unit on/off switch is located on the front of
the unit.
To turn on the unit, push the on/off switch up.
To turn off the unit,
WARNING: The on/off switch will remove
power from the unit but the power cord
terminals will still be live. You must disconnect
power by unplugging power cord prior to
servicing.
push the on/off switch down.
ON
/
OFF
Switch
Details of terminals
Red-24VAC terminal
For obtaining 24VAC operating voltage from the unit
Purple-LS terminal
Turn ON unit: connect R terminal to LS terminal then release for one
time within 5 seconds.
Turn OFF unit: connect R terminal to LS terminal then release for
two times within 5 seconds.
Force shut down: connect R terminal to LS terminal for over 5
seconds.
Note: After force shut down, you can turn the unit ON again by
handheld remote controller or the control panel.
Green-high fan speed terminal
When this terminal is connected to the R terminal, the fan blower will
run on high speed.
Blue-reversing valve terminal
When this terminal is connected to the R terminal, the reversing
valve is energized. Should the compressor be locked out
or disabled, the electric heater shall provide backup.
Yellow-compressor terminal
When this terminal is connected to the R terminal, the compressor
will be switched on (Green-high fan speed or Orangelow
fan speed terminals must also be connected to the R terminal as
well.)
White-heater terminal
When this terminal is connected to the R terminal, electric heater will
be switched on (Green-high fan speed or Orangelow
fan speed terminals must also be connected to the R terminal.)
Orange-low fan speed terminal
When this terminal is connected to the R terminal, the fan blower will
run on low speed.
Black-common terminal
24VAC common to provide opposite polarity voltage to wall
thermostat.
Содержание VTAC
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