5126744-UIM-D-1015
2 Johnson Controls Unitary Products
Due to system pressure, moving parts, and electrical components,
installation and servicing of air conditioning equipment can be hazard-
ous. Only qualified, licensed service personnel should install, repair, or
service this equipment. Unlicensed personnel can perform basic main-
tenance functions of cleaning coils and filters and replacing filters.
Observe all precautions in the literature, labels, and tags accompanying
the equipment whenever working on air conditioning equipment. Be
sure to follow all other applicable safety precautions and codes includ-
ing.
Wear safety glasses and work gloves. Use quenching cloth and have a
fire extinguisher available during brazing operations.
INSPECTION
As soon as a unit is received, it should be inspected for possible dam-
age during transit. If damage is evident, the extent of the damage
should be noted on the carrier’s freight bill. A separate request for
inspection by the carrier’s agent should be made in writing.
REPLACEMENT PARTS
Contact your local Unitary Products parts distribution center for autho-
rized replacement parts.
SECTION III: MODEL NUMBER NOMENCLATURE
SECTION IV: INSTALLATION
LIMITATIONS
These units must be installed in accordance with the following national
and local safety codes.
1. National Electrical Code ANSI/NFPS No. 70 or Canadian Electrical
Code Part 1, C22.1 (latest editions).
2. Local plumbing and waste water codes and other applicable local
codes.
Refer to Table 8 for unit physical data and to Tables 5-7 for electrical
data.
If components are to be added to a unit to meet local codes, they are to
be installed at the dealer's and/or the customer's expense.
Size of unit for proposed installation should be based on heat loss/heat
gain calculations made in accordance with industry recognized proce-
dures such as the Air Conditioning Contractors of America (manual J).
WARNING
Before performing service or maintenance operations on unit, turn off
main power switch to unit. Electrical shock could cause personal
injury. Improper installation, adjustment, alteration, service or mainte-
nance can cause injury or property damage. Refer to this manual.
For assistance or additional information consult a qualified installer,
service agency or the gas supplier.
CAUTION
This system uses R-410A Refrigerant which operates at higher pres-
sures than R-22. No other refrigerant may be used in this system.
Gage sets, hoses, refrigerant containers and recovery systems must
be designed to handle R-410A. If you are unsure, consult the equip-
ment manufacturer. Failure to use R-410A compatible servicing
equipment may result in property damage or injury.
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PCE 4 A 24 50 2 X 1 A
1234 6 89
1. Model Family
PCE - packaged A/C with electric heat,
PHE - packaged with electric heat,
PCG - packaged A/C with gas heat,
PHG - packaged with gas heat,
5. Gas Heating Input BTU/Hr x 1000
050 = 50,000 BTU/Hr. input, blank = electric heat
6. Voltage-Phase-Frequency
2 = 208/230-1-60, 3=208/230-3-60, 4 = 460-3-60
2. Nominal Cooling Efficiency
4 = 14 SEER, 6 = 16 SEER, etc.
7. NOx Approval
X = low-NOx, blank = not low-Nox
3. Cabinet Size
A = small 35 x 51, B = large 45 x 51
8. Generation Level
1 = first generation
4. Nominal Air Conditioning Cooling Capacity BTUx1000
24 = 24,000 BTU, etc.
9. Revision Level
A = original release, B = second release
Examples:
PCE4B4221A is a packaged air conditioner, 14 SEER, 3-1/2 ton, large cabinet, 230 volt, single phase model, (first generation, first release)
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