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INSTALLER: PLEASE LEAVE THESE INSTALLATION INSTRUCTIONS WITH THE HOMEOWNER.
7091580
Specifi cations and illustrations
subject to change without
notice or incurring obligations.
Printed in U.S.A. (02/10)
O’Fallon, MO
7091580
¢709158D¤
COMPONENT FUNCTIONS
Low Pressure Switch
The low pressure switch is factory installed and
located in the suction line internal to the unit. The
switch is designed to protect the compressor if a
loss of charge occurs. Under normal conditions,
the switch is closed.
If the suction pressure falls below 5 psig, then
the switch will open and de-energize the unit. The
switch will close again once the suction pressure
increases above 20 psig. The low pressure
switch interrupts the thermostat inputs to the unit.
NOTE: When the switch opens and then closes,
there will be a 5 minute short cycling delay before
the unit can energize.
High Pressure Switch
The high pressure switch is factory installed
and located in the compressor discharge line
internal to the unit. The switch is designed to de-
energize the system when very high pressures
occur during abnormal conditions. Under normal
conditions, the switch is closed.
If the discharge pressure rises above 650 psig,
the switch will open and de-energize the unit.
The switch will close again once the discharge
pressure decreases to 460 psig. The high
pressure switch interrupts the thermostat inputs
to the unit. NOTE: When the switch opens and
then closes, there will be a 5 minute short cycling
delay before the unit can energize.
Table 4. Motor Lead Connection
Model Q5RF Wire Color/Speed Tap Motor Speed
Air Flow
(@ 0.3 in WC)
X24K
T1 Low 560
Orange/T2 Medium/Low* 600
Black/T3 Medium** 800
Red/T4 Medium/High*** 1,040
T5 High 1,250
X36K
Orange/T1 Low* 600
T2 Medium/Low 750
Black/T3 Medium** 1,200
Red/T4 Medium/High*** 1,420
T5 High 1,520
X48K
Orange/T1 Low* 1,030
T2 Medium/Low 1,240
Red/T3 Medium*** 1,400
Black/T4 Medium/High** 1,530
T5 High 1,680
X60K
Orange/T1 Low 1,060
T2 Medium/Low* 1,200
Red/T3 Medium*** 1,500
Black/T4 Medium/High** 1,760
T5 High 1,970
* Denotes Factory Set Low Speed Cooling/ Heating
** Denotes Factory Set High Speed Cooling/ Heating
*** Denotes Factory Set Electric Heating Speed