Owner’s Manual -
Packaged Terminal
3
2
UNIT FEATURES
This unit has many features which are different than
those found on conventional PTAC units. The servicer
must be familiar with these features in order to
property handle the unit.
•
LCDI Cords
- Underwriters Laboratories and the
National Electric Code (NEC) now require power
cords that sense current leakage and can open
the electrical circuit to the unit on units rated at
250 volts or less. In the event that unit does not
operate,check the reset button located on or near
the head of the power cord as part of the normal
troubleshooting procedure.
LCDI power Cord
•
Automatic 3-minute compressor lockout
- After
the compressor cycles off, it will not restart for three
minutes.
•
Random restart delay
- To help eliminate power
surges after a power outage, the unit Is equipped
with a two to four minute random restart delay
feature. Whenever the unit is plugged In with the
master switch turned on and the mode switch set in
the cool or heat mode, a random restart will occur.
•
Indication LEDs -
The control panel has LEDs that
correspond to fan operation and to Indicate unit
status. The LEDs next to the selections ON/OFF,
FAN, COOL, and HEAT indicate which operational
mode Is active.
•
High Pressure Protection
- The unit will shut off
automatically when the pressure in the system
is over 638 psi and within 10 minutes, after the
compressor turns off, the unit will restart when the
pressure turns back below 551 psi. This protection
can effectively avoid the burst and leakage of pipes,
lessen the system failures and prolong the service
life.
•
Failure Tolerance
- If the unit is in protection mode
less than 4 times in one hour, the accumulation
times will reset to avoid system failure. Only when
the unit enters protection mode more than 4 times in
one hour will the system fail to restart automatically
and need manual restart.
•
Standard Physical Dimensions
- The series PTAC
uses standard dimensions, 42” wide x 16” high x
13-3/4” deep.
Replacement of older units is made easy.
•
Weather - Protected Electrical Components
-Vital electrical components are protected from the
weather by locating them on the indoor side of the
weather barrier.
•
Highly Featured Microprocessor Controls
- Microprocessor controls are programmed to
interface with the temperature sensors to maximize
comfort conditions for the room occupant.
Thermistors are used to sense small changes in
temperature to give excellent room control and
allow the microprocessor to monitor and react to
changing conditions.
•
Automatic Emergency Heat on Heat Pump
Units
-Automatically uses electric resistance heat if
the heat pump falls.
•
High-Temperature Heat Pump Operation
Protection
-Automatically protects the compressor if heat pump
is operated with high indoor coil temperatures.
Power to the outdoor fan and the compressor
are turned off if the indoor coil gets too hot during
heat pump operation to prevent damage to the
compressor.
