Figure 32
Typical Representation - Unit Mount
Control
THERMOSTAT KNOB
Do not rotate thermostat knob back and forth from heating
to cooling.
This causes compressor to cycle on and off rapidly and will
cause damage to the compressor.
Allow compressor to remain off for at least three minutes
prior to restarting the unit.
Remote Mounted Thermostat
1.
Use thermostat to place PTAC/PTHP in COOL, HEAT, or
OFF position. Test operation in all positions.
2.
If thermostat is fitted with fan switch, set as desired
places the fan in either ON, OFF, or AUTO. Test
operation in all positions.
3.
Check thermostat calibration for both heating and
cooling operation.
Start Up
1.
Verify unit is secure and level.
2.
Heat pump units only — Verify thermostatic drain pan
valve is operating correctly. Valve should be closed if
temperature is above 60° F and open if below 60°F.
3.
Test fresh air damper, if equipped, by setting damper
door switch to "YES". Verify damper opens and allows
fresh air to be moved into the space. Set damper door
switch to "NO". Verify flow of air into the space has
stopped. Fresh air is only available when indoor fan is
operating.
4.
Verify HP jumper is set correctly for unit type, cooling
only or heat pump. See figure 29, page 29.
5.
Set TEST jumper to test mode, this disables time
delays, including anti-short-cycle and purge times. See
figure 29, page 29.
6.
Verify unit is wired correctly, including requirements on
page 10.
7.
Connect Electric power to unit.
8.
Turn unit on. Verify proper operation.
9.
Verify condensate removal:
A. Pour water into base pan.
B. Place unit in cooling mode, with condenser fan
operating, verify water is picked up by slinger ring
and thrown onto outdoor coil.
Compressor will not start until anti-short time period has
elapsed.
On power-up, there are delays for control board
initialization and random start timing. See Sequence of
Operation Section, page 25.
Unit Mounted Thermostat
1.
Use system switch to place PTAC/PTHP in COOL,
HEAT, or OFF position. Test operation in all positions.
See figure 32.
2.
Use fan speed switch to place fan in LOW or HIGH
speed. Test operation in both positions for heating and
cooling. See figure 32.
3.
Test operation of Fan Cycle switch, toggle switch on
side of control box. Set switch to ON, continuous fan
operation, or AUTO, cycling with thermostat, for both
heating and cooling. Set switch in desired position.
4.
Rotate thermostat knob left to increase setpoint
temperature, or right to decrease.
• Turning unit-mounted thermostat knob to far left
produces the warmest room temperature.
• Turning thermostat knob all the way to the right
produce coolest room temperature.
• Setting can be adjusted for personal comfort. See
figure 32.
FINAL INSPECTION & START-UP
31
Made in USA
P/N 240010545, Rev. B [10/24/2014
]
