23
PROPER INSTALLATION
Plastic
Holder
Indoor Ambient
Thermistor
Indoor Coil
2. Cut off end of thermistor, separate leads 1” back from cut
and strip 1/2” of insulation from each lead.
3. Wire nut the stripped leads to the two sensor wires run-
ning from terminals 2 and 3 on the remote temperature
sensor base .
4. Place the mode switch in the “OFF” position. Reestablish
power to the unit. The remote temperature will automati-
cally activate.
NOTE:
Ensure the mode switch is in the OFF position before
electrical power is applied to the unit. If the mode switch is not
in the OFF position when electrical power is applied to the unit,
the random restart feature will activate causing a two to four
minute start-up delay.
NOTE:
Freeze protection temperatures will be sensed by the
remote temperature sensing device and not at the PTAC unit
(sensed at the PTAC unit when a remote thermostat is used).
Temperature Limiter
The temperature limiting feature can reduce energy costs by
controlling the maximum temperature available in heating and
the minimum temperature available in cooling. While approxi-
mate temperature settings are shown below, actual room tem-
perature will vary slightly.
64° F
68° F
71° F
75° F
82° F
85° F 87° F
87° F
63° F
63° F
66° F
69° F
76° F
79° F 83° F
86° F
Low End
Cooling Limits
High End
Heating Limits
Temperature Limiter Settings
The temperature limits are set by selecting the proper holes to
use for the limiter screws. The figure above shows the high
and low end temperatures corresponding to the various limiter
holes. Since these temperatures correspond to the unit's ther-
mistor sensor, actual room temperatures will vary depending
on the room heating/cooling load. For example, if the limiter
screws are put in the shaded holes, the coolest setting in the
cooling mode will be 68° F and the warmest setting in the
heating mode will be 83° F.
"A & B model units only, C mod-
els and later have DIP Switches to set the limits"
ON
LED1
EH IN LS FD1 FD2 TF1 TF2 C R GL W2 Y/W1B GH
RMT/STD
CONTROL
FAN
C
B
A
ON/AUTO
Temperature Limiter
POSITION
COOL
HEAT
A
70-78
65-73
B
68-81
63-76
C
66-83
61-78
D
63-88
58-83
Temperature Settings
NOTE: Select only on pin position.
After determining the temperature limits desired, set the lim-
iter as follows:
1. Remove the front cabinet (see Front Removal) to allow ac-
cess to the control panel.
2. Remove the unit control knobs by pulling the knobs off the
control shafts.
3. Remove the escutcheon plate by lifting it off the control
panel cover to expose the temperature limiter as shown.
