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52C,P
SERIES
2
INTRODUCTION
The focus of this manual is to provide basic information
on service procedures, safety, troubleshooting, clean-
ing, and component replacement for service techni-
cians. It is intended for use only by HVAC service
technicians who have successfully completed
instruction and received Type I Certification
from the U.S. Environmental Protection Agency.
The instructions in this manual are general in nature
and are not to be substituted for installation and ser-
vice instructions shipped with the unit. No attempt to
install, operate, adjust, repair, or dismantle any equip-
ment should be made until the manufacturer’s instruc-
tions are read and thoroughly understood by the
service technician. Even equipment that seems famil-
iar may have specific model differences from year to
year. Always review manufacturer’s instructions.
Model 52C,P packaged terminal air conditioner
(PTAC) and heat pump units are self-contained for
installation through the wall for individual room heat-
ing and cooling. The Model 52C,P polymer and metal
sleeves are permanently fastened to the wall; the unit
chassis slides out of the sleeve to allow the service
technician easy access. Many accessories are offered
to complement the unit’s performance and comfort
control.
Before beginning any service procedures, it is impor-
tant to check the unit model number. See Figure 1 and
2. Units that seem similar may have subtle differences
that could affect service procedures. The following
units are covered in this manual:
52CE — 60 Hz cooling with electric heat units
52CQ — 60 Hz heat pump with electric heat units
52PE — 60 Hz cooling with electric heat units
52PQ — 60 Hz heat pump with electric heat units
52PC — 60 Hz cooling only units
Knowing which model is being serviced will help deter-
mine if the unit is performing at optimum levels. The
model number is located on the data information plate
beneath the front panel of the unit. See Figure 1. The
data information plate also lists voltage ranges and
other important electrical information about the unit.
SUMMARY OF DANGERS, WARNINGS,
AND CAUTIONS
The terms DANGER, WARNING, and CAUTION have
specific meanings that identify the degree of hazard.
Typically in the HVAC industry, these specific mean-
ings are:
There is an immediate hazard which WILL result
in severe personal injury or death.
Hazards or unsafe practices which COULD
result in severe personal injury or death.
Potential hazards or unsafe practices which
COULD result in minor personal injury or equip-
ment damage.
CANADIAN INSTALLATION
SERIAL 3701X11520
DATE OF MFG. 09/12/2001
VOLT RANGE 187-253
VOLTS 230/208
PH 1
MODEL 52PQA312301AA
HZ
60
MIN CKT AMPACITY 19.3
R-22 OZ 34
DESIGN PSIG 350 HIGH SIDE, 150 LOW SIDE
COOLING
HEATING
BTU/HR 12,100/12,000
AMPS 4.8/5.3
WATTS 1090/1122
EER 11.1/10.7
MOTOR
FAN
COMP
HP
FLA
RLA
LRA
6.1
29
0.75
1/8
BTU/HR 11,000/11,000
AMPS 15.6/14.5
WATTS 3570/2997
COP 3.2/3.2
HEATER
BTU/HR
AMPS 14.8/13.7
WATTS 3400/2850
WATER
STEAM
20
20
20
USE
TIME DELAY FUSE
OR HACR TYPE
CIRCUIT BREAKER
AMP
AMP AMP
MAX FUSE
MAX BREAKER
FIGURE 1 — SAMPLE DATA INFORMATION
PLATE