XP17 - 2 to 5 Ton Heat Pump / Page 5
CONTROLS (CONTINUED)
OPTIONS
Compressor Low Ambient Cut-Off
Non-adjustable switch (low ambient cut-out) prevents
compressor operation when outdoor temperature is
below 35°F.
Compressor Hard Start Kit
Single-phase units are equipped with a PSC
compressor motor.
This type of motor normally does not need a potential
relay and start capacitor.
In conditions such as low voltage, kit may be required to
increase the compressor starting torque.
Indoor Blower Off Delay Relay
Delays the indoor blower-off time during the cooling
cycle.
Indoor Blower Speed Relay Kit
Relay kit provides optimum humidity control conditions
by automatically reducing indoor blower speed during
continuous fan operation.
Low Ambient Kit
Outdoor units will operate in the cooling mode
satisfactorily down to 45°F outdoor air temperature
without any additional controls.
Kit can be added in the field enabling unit to operate
properly down to 30°F.
A Freezestat should be installed on compressors
equipped with a low ambient kit.
A Compressor Low Ambient Cut-Off should be added to
terminate compressor operation below recommended
operation conditions.
Monitor Kit - Service Light
Contains ambient compensating thermistor and service
light thermostat.
For use with thermostats requiring input for indicator
lights.
Outdoor Thermostat Kit
An outdoor thermostat can be used to lock out some of
the electric heating elements on indoor units where two-
stage control is applicable.
Outdoor thermostat maintains the heating load on the
low power input as long as possible before allowing the
full power load to come on the line.
Thermostat kit and mounting box must be ordered
separately.
FEATURES
