2
Table 1—Kit Usage and Cut In/Cut Out Pressures
KIT PART NO.
REFRIGERANT
PRESSURE SWITCH CLOSES
(PSIG)
PRESSURE SWITCH OPENS
(PSIG)
WIRE COLORS
KSALA0201R22
R---22
225
100
Blue and Yellow
KSALA0301410
R---410A
365
200
Blue and Violet
SERVICE FITTING CAP
VALVE CORE END
ADAPTER TEE
FLARE NUT
ON PRESSURE
SWITCH
LIQUID REFRIGERANT SERVICE
VALVE SERVICE FITTING
EXTENDER TUBE
FLARE NUT
A00025
Fig. 1
—
Low--Ambient Pressure Switch
REQUIRED CHANGES FOR COOLING UNITS AND
HEAT PUMP UNITS
1. Crankcase heaters are required on all applications where
low--ambient controls are used.
2. Start capacitor and relay (hard start) kits are required on all
single--phase applications where low--ambient controls are
used.
3. Evaporator freeze thermostat KAAFT0101AAA is
required on all applications where low--ambient controls
are used.
4. Wind baffles are required for temperatures below 0
_
F or
where there is substantial wind.
NOTE
: When wind baffles are used, raising unit off of pad a
minimum of 4 in. is required to provide better airflow for
moderate-- and
high--ambient temperatures. Check pre--sale
literature for available support feet or unit risers.
CUT HAZARD
Failure to follow this caution could result in personal
injury.
To reduce risk of personal injury, wear personal protective
equipment when working with wind baffles. Only
experienced technicians should fabricate and install wind
baffles.
!
CAUTION
5. For cooling applications only, winter start control
KAAWS0101AAA must be used where low--pressure
switch tripping may be encountered. Winter start control
must be wired in parallel with low--pressure switch. This
allows a delay of 3 minutes before low--pressure switch
becomes part of control circuit. (See Fig. 5.)
CONNECTOR
CONTACTOR
BLUE
BLACK
FAN
MOTOR
PRESSURE
SWITCH
YELLOW
OR
VIOLET
A97326
Fig. 2
—
Power Wiring for All Voltages of
Cooling Applications
DEFROST
BOARD
OF2
O
C
ISOLATION
RELAY
YELLOW
OR VIOLET
BLUE
BLACK
FAN
MOTOR
PRESSURE
SWITCH
A97327
Fig. 3
—
Power Wiring for 208/230v Heat Pump
Applications
DEFROST
BOARD
O
C
ISOLATION
RELAY
YELLOW
OR VIOLET
BLUE
OUTDOOR
FAN RELAY
BLACK
FAN
MOTOR
PRESSURE
SWITCH
1
3
A97328
Fig. 4
—
Power Wiring for 460v Heat Pump Applications
KS
A
LA
