Owner’s Manual KAC/KHP/KAC-M/KHP-M Series
ThermoPlus Air, Inc. February 2007 5
Data subject to change without notice.
Startup
Pre-Startup Adjustments Adjust Airflow
Before the unit is operated, the supply duct air flow must be measured and set
by a qualified air-balancing technician. Air flow must be measured with all air
side access doors closed.
Air flow is adjusted by changing the variable sheave on the blower motor shaft. Do not
use other sheaves or change the airflow outside the range given on the unit nameplate,
without the express approval of ThermoPlus.
To run the blower only:
1. Turn on the branch-circuit disconnect switch. Some units may have voltage monitors
that prevent operation in the event the branch circuit has voltage that is too high, too low,
has lost a phase, or has reversed phase rotation. If the green LED
is not lit, confirm that the applied voltage is within ±10% of the nameplate voltage
(NEMA MG-1), that all three phases are present, and that the phase rotation is correct.
2. In the unit electrical enclosure, press START on the blower motor overload (if any).
3. Follow the steps below to start the blower. If prompted for a password on units made before 4/2005, enter
1793. For units made after 4/2005, enter 17 or 1793.
If the blower does not turn the proper direction, a qualified person should disconnect electric power and
interchange any two of the branch circuit wires at the unit input lugs. Torque the connectors as discussed
earlier.
Do not move any factory installed wires.
4. When air-flow adjustment is complete, the blower can be stopped by repeating the steps above. If
prompted for a password on units made before 4/2005, enter 1793. For units made after 4/2005, enter 17 or
1793.
If possible and safe, leave the electrical power connected to the unit and leave the blower overload
(if any) ON. This will allow the compressor crankcase heater(s) to function. The crankcase heaters
must be on continuously for at least 10 hours before the compressors are started.
Adjust airflow
Important!
Never run the blower without the filters in
place. Regardless of filters, never run the
blower when construction dust is present.
The resulting heat exchanger damage is not
covered by the warranty.
Important!
Airflow must be set and confirmed
before the refrigeration system is
adjusted.
GO TO
AUTO/OFF CONTROLS
BLOWER Off
COMPRESSOR #1 Off
COMPRESSOR #2 Off
TURNING BLOWER
AUTO
ENTER TO CONFIRM
ESC TO CANCEL
Press or to toggle
between AUTOMATIC and OFF.
Then press to confirm.
Press repeatedly to return
to the main menu or default screen.
Press repeatedly to reach screen below.
MAIN MENU
SCROLL DOWN
FOR OPTIONS
Default Screen
HUMIDITY
aaa / bbb %
ROOM AIR ccc / ddd F
Optional
Do not select
compressor(s).
For a controller
interface map,
see
Operation
.
Prg
Esc
HUMIDITY
aaa / bbb %
ROOM AIR ccc / ddd F
Esc
Esc
Esc
Esc
Esc
