Carrier 52PC User Manual
52C and 52PSERIES I
OWNER'S MANUAL
PACKAGED TERMINAL AIR CONDITIONERS
AND HEAT PUMPS
7,000-15,000 Btuh
CONTENTS
Page
GENERAL ....................................... 2
UNIT INSPECTION ............................. 2,3
FRONT PANEL ................................ 2
ELECTRICAL DATA .............................. 4
ALL UNITS .................................... 4
VOLTAGE SUPPLY ............................. 4
INSTALLATION ................................ 5-8
CHASSIS INSTALLATION ...................... 5
WALL THERMOSTAT INSTALLATION ........... 8
OPERATION .................................. 9,10
COMFORT CONTROLS ......................... 9
OPERATING CONTROLS ...................... l0
OPERATING MODES .......................... l0
Page
CARE AND MAINTENANCE ................. 11,12
INDOOR-AIR INLET FILTERS .................. 11
EXTERNAL PARTS ............................ 12
INTERNAL PARTS ............................ 12
PREVENTATIVE MAINTENANCE ................ 13
TROUBLESHOOTING ........................... 14
ACCESSORIES .................................. 15
1.800.894,'6449 (in USA and Canada)
For Service/Technical Assistance
1°800.830.8600 (Mexico)
Manufacturer z_-_.ervesthe right to discontinue, or change at any time, speciflcalUons or designs without notice and without incurrln 9 obligations.
Book 1 4 PC 132 Catalog No. 535-20066 Printed in U.S.A. Form 52C,P-2SO Pg 1 10-04 Replaces: 52C, P-1SO
GENERAL
Thank you for choosing Carrier! You can feel confident
in your selection because the same pride in craftsman-
ship and engineering knowledge that goes into Carrier
equipment at the Astrodome in Texas, the Sistine
Chapel in Rome, the US Capitol Hall of Congress, and
thousands of other installations worldwide has gone
into the construction of this unit.
The Carrier package terminal air conditioners and
heat pumps provide a high standard of quality in per-
formance, workmanship, durability and appearance as
they heat and cool the occupied air space year round.
This manual provides information for ease of installa-
tion, operation and maintenance of the 52C and 52P
units. The following units are covered in this manual
(see Figure 1 for additional unit information):
52CE 60 Hz cooling with electric heat units
52CQ 60 Hz cooling, electric heat, and heat pump units
52PE 60 Hz cooling with electric heat units
52PQ 60 Hz cooling, electric heat, and heat pump units
52PC 60 Hz cooling only units
All models are designed for through-the-wall installa-
tion. Separate installation instructions are included
with all accessory components. See Accessories section
on page 15 for complete listing of accessories.
UNIT INSPECTION
Examine unit for damage incurred during shipment.
File a claim immediately with the transit company if
damage is found.
The data information plate (Figure 1) lists the model
number, voltage ranges, and other important electrical
information about this product. Reading and under-
standing this material is important for proper use of
this unit. To access the information plate, the front
panel must be removed; see Figure 2.
FRONT PANEL
Remove front panel from unit by grasping the panel
firmly at the center top and center bottom. Pull the
panel upward at the bottom and forward at the top to
release magnetic latches and partition hooks. See
Figure 2.
NOTE: Front panel may be secured to chassis with
2 screws located behind indoor air inlet filters. In order
to remove these screws, the filters must be removed
first. Refer to page 11 in this manual for instructions on
removing indoor air inlet Filters.
IMPORTANT: The front panel has to be off the unit
to complete future checks and installation proce-
dures. Do not reinstall front panel at this time.
MADE IN M_ICO _212 _ D
FOR SERVICE/TECHNICAL i
ASSISTANCE IN THE UI5. g_
CANADA TELEPHONE
1-800-894-6449
IN MEXICO TELEPHONE
01-800-830-8600_
FIGURE 1 -- SAMPLE DATA INFORMATION PLATE
Using Figures 1 and 3 as reference, verify that the
packaged terminal product ordered will operate prop-
erly in your facility. If you do not understand the in-
formation given or have questions about the product,
please call your local dealer or distributor.
FIGURE 2 -- REMOVING FRONT PANEL
Replacement Package Terminal Air Conditioner,
CLASSIFIED BY UNDERWRITERS LABORATO-
RIES INC., AS TO ELECTRIC
SHOCK, FIRE AND CASUALTY
HAZARDS ONLY. FOR FIELD
INSTALLATION WITH EXISTING
WALL SLEEVES, OUTDOOR LOU-
VERS, AND INDOOR PANELS AS
SPECIFIED ON THE PRODUCT.
S
52 PE A 3 12
AA
Series Designation
PTAC (Packaged Terminal Air Conditioner)
Comfort Series
CE - Coolingwith ElectricHeot
CQ - Heat Pump
Premier Series
PC - Cooling Only
PE - Cooling with Electric Heat
PQ - Heat Pump
Latest Revision
A-Z
Electric Heater Size
2 - 2.3 kW
3 - 3.4 kW
5 - 5.0 kW
Cooling Capacity (nominal)
07 - 7,000 Btuh
09 - 9,000 Btuh
12 - 12,000 Btuh
15 - 15,000 Btuh
T
FIGURE 3 -- MODEL NUMBER NOMENCLATURE
To install the front panel, follow the procedure out-
lined below:
Replace the unit front panel.
1, Hold the front panel firmly at the center top and
center bottom at a 5 to 10 degree angle from
vertical.
2. Place the top of the front panel onto the unit mak-
ing sure the top engagement posts have engaged
the slots on the unit. Front panel should be fiat
against the top of the unit.
3. Gently lower the front panel onto the chassis,
ensuring that the power cord (or conduit) is routed
through the front panel notch. Magnetic latches at
bottom of front panel will secure the front panel to
the unit.
To install locking feature on front panel, be sure front
panel is already installed on unit and follow the steps
below:
NOTE: Two field-supplied no. 8, Vz-in. sheet metal
screws are required to secure front panel to chassis.
1. Remove both indoor air inlet filters to expose front
panel engagement holes. See Figure 4.
2. Secure front panel to chassis by attaching the
field-supplied screws into engagement holes, Do
not over tighten.
3. Replace both indoor air inlet filters.
NOTE: Front panel alignment may have to be
adjusted slightly to line with chassis.
Chassis Options
AA - Standard
CP - Corrosion Protection
RC - Wall Thermostat Control (Not available
on cooling only units)
RP - Wall Thermostat Controlwith
Corrosion Protection (Not available on
coolingonly units)
Packaging
I - Domestic
Non-Performance
Changes 0-9
Electrical Data
3 - 230/208-v, 60 Hz
4 - 265-v, 60 Hz
TOP PARTITION
DISCHARGE ENGAGEMENT FRONT PANEL
DECK HOLE SLOT
FIGURE 4 -- FRONT PANEL INSTALLATION
WITH LOCKING FEATURE
ELECTRICAL DATA
ELECTRICAL SHOCK HAZARD
DO NOT alter cord or plug, and DO NOT use an
extension cord. Personal injury or damage to the
unit may result.
Be sure that your outlet matches the appropriate
blade configuration of the supplied plug and that it is
within reach of the service cord. A hardwire kit is
available as an accessory to change cord-connected
units to hardwired units. (See Accessories table on
page 15.)
IMPORTANT: All standard cord-cormected 265-v
units will require a field-installed electrical sub-
base accessory.
ALL UNITS
m WIRE SIZE -- Use recommended wire size given in
Table 1 and install a single branch circuit. All wiring
must comply with local and national codes. All units
are designed to operate off single branch cir-
curs only.
NOTE: Use copper conductors only.
I GROUNDING -- For safety and protection, the
unit is grounded through the service cord plug or
through separate ground wire provided on hardwired
units. Be sure that the branch circuit or general pur-
pose outlet is grounded.
TABLE 1 -- SUGGESTED BRANCH CIRCUIT
WIRE SIZES*
NAMEPLATE AMPS AWG WIRE SIZEt
7.0 to 12 14
12.1 to 16 12
16,1 to 24 10
LEGEND
AWG -- American Wire Gage
*Single circuitfrom main box.
"i'Basedon copper wire at 60 C temperature rating.
VOLTAGE SUPPLY
Check voltage supply at outlet. For satisfactory
results, the voltage range must always be within the
ranges found on the data information plate
(shown in Figure 1).
l CORD-CONNECTED UNITS -- The 250-v field-
supplied outlet must match the plug for the standard
208/230-v units and be within reach of the service
cord. The standard cord-connected 265-v units require
an accessory electrical subbase for operation. See
Accessories table, page 15, for subbase selection. Refer
to Table 2 for proper receptacle and fuse type.
• POWER CORD PROTECTION -- The power cord
for the 230/208-v unit provides both personal shock
protection and power cord F_re prevention. Unit power
automatically disconnects when unsafe conditions are
detected. Power to the unit can be restored by pressing
the RESET button on plug head.
Upon completion of unit installation for 230/208-v
models, an operational check should be performed
using the TEST/RESET buttons on the plug head. See
Figure 5.
NOTE: The 265-v models do not incorporate this
feature as they require use of the electrical subbase
accessory.
TABLE 2 -- RECEPTACLES AND FUSE TYPES -- 250,265 VOLTS
RATEDVOLTS 260 250 250 265 265 265
TIME-DELAYTYPE
FUSE (or HACRCircuRBreaker) 15 20* 30 15 20 30
LEGEND
HACR -- Heating, Air Conditioning, Refrigeration
*May be used for15-amp applications iffused for 15 amp.
15Amps 20 Amps 30 Amps 15Amps 20Amps 30 Amps
INSTALLATION
CHASSIS INSTALLATION
Units are shipped without a sleeve. In applications
where unit is a replacement, it is recommended that a
Carrier sleeve and grille be used.
The 52C and 52P units can retrofit General Electric,
Amana, Trane, and Friedrich sleeves/grilles (be sure
outdoor grille is installed on the sleeve). See Table 3
for details. Carrier Corporation must approve any
other retrofit application.
For competitive retrofit applications, be sure that the
foam seals (factory-installed on the tube sheets) pro-
vide a good seal between the outdoor grille and out-
door coil tube sheets. These foam seals provide a
barrier to separate outdoor coil leaving air from mix-
ing with the outdoor incoming air (knov, m_as air recir-
culation).
See Figure 5.
For retrofit applications, foam seals on outdoor coil
tube sheets must make a seal between the coil and
the grille or loss of performance and premature
damage to the major components can result.
TABLE 3 -- RETROFIT WALL SLEEVES
MANUFACTURER WALL SLEEVE PART NUMBER
General Electric Metal Sleeve RAB71
Plastic Sleeve RAB77
Amana Metal Sleeve WS900B
Trane Metal Sleeve BLV149
Friedrich T-Series Metal 111/2-in. deep wall sleeve*
Standard depthwall sleeve 16 x 42 x 133/4-in.
PXWS
*FR-SLEEVE-EXT accessory is required forretrofit into Friedrich
(T-Series) wall sleeves,
INDOOR-AIR DISCHARGE WIRE SCREEN
INLET GRILLE
FILTERS
FRONT
PANEL
OUTDOOR
ORIFICE
INDOOR
PLUG TEST/
RESET BUTTONS
COIL
FIGURE 5 -- UNIT COMPONENTS
COIL TUBE
SHEETS
BASEPAN OLRDOOR WALL
GRILLE SLEEVE
• COMPETITIVE SLEEVE PREPARATION
IMPORTANT: Inspect the wall sleeve thoroughly
prior to installation. Manufacturer does not assume
responsibility for costs or damages due to defects in
the sleeve or improper installation.
Disconnect all power to unit to avoid possible electri-
cal shock during installation.
Remove any existing foam baffles that are installed on
the outdoor grille ff present. See Figure 6.
GE Sleeves Only
Metal Wall Sleeve -- Remove metal clip on mounting
rail located on left, inside bottom of metal sleeve and
discard. See Figure 7.
Plastic Sleeve -- Remove bottom seal from plastic
sleeve. See Figure 8.
• INSTALLATION OF A CARRIER WALL SLEEVE
USING A NON-CARRIER GRILLE
This application has become more common due to
pre-manufactured windows with built-in grilles or ren-
ovations where a Carrier sleeve is used with an exist-
hag non-Carrier grille.
Use of a Carrier wall sleeve with a non-Carrier grille
requires installation of an Accessory Baffle Kit, which
ensures a good seal between the unit and exterior
grille and prevents air recirculation. (See Figures 9
and 10.) Air recirculation is a large contributor to
performance loss and premature damage to major
components.
METAL CLIP
MOUNTIN(
FIGURE 7 -- REMOVE METAL CLIP ON
GE METAL SLEEVE
BOITOM SEAL
FIGURE 8 -- REMOVE BOTTOM SEAL FROM
GE PLASTIC SLEEVE
BAFFLES
FIGURE 6 -- REMOVE EXISTING BAFFLES ON
COMPETITIVE OUTDOOR GRILLES
FIGURE 9 -- ACCESSORY BAFFLE KIT
FIGURE 10 -- INSTALLATION COMPLETE
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