Johnson Controls Unitary Products
5126744-UIM-D-1015
®
®
SINGLE PACKAGE
AIR CONDITIONER/ELECTRIC
MODELS: PCE4 Series
(2-5 Ton)
INSTALLATION MANUAL
LIST OF SECTIONS
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
MODEL NUMBER NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
AIRFLOW PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
TYPICAL WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
START UP SHEET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
LIST OF FIGURES
Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Unit 4 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Bottom Duct Dimensions (inches) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Rear Duct Dimensions (inches) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typical Field Control Wiring Diagram For Air Conditioner Models . . . 7
Typical Field Power Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . 7
Single Point Wiring Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Measuring External Static Pressure . . . . . . . . . . . . . . . . . . . . . . . . . 17
Connection Wiring Diagram - 2 to 3 Ton Models . . . . . . . . . . . . . . . 18
Ladder Wiring Diagram - 2 to 3 Ton Models . . . . . . . . . . . . . . . . . . . 19
Connection Wiring Diagram - 3.5 to 5 Ton Models . . . . . . . . . . . . . . 20
Ladder Wiring Diagram - 3.5 to 5 Ton Models . . . . . . . . . . . . . . . . . 21
R-410A Quick Reference Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
LIST OF TABLES
Unit Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Weights and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Unit Clearances, . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical Data - 208/230-1-60 - Single Source Power
Single Point Connection Kit Required . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical Data for 208-1-60 Multi Source Power . . . . . . . . . . . . . . . . 9
Electrical Data for 230-1-60 Multi Source Power . . . . . . . . . . . . . . . 10
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Airflow - Side Duct Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Airflow - Bottom Duct Application . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Electric Heat Minimum Supply Air . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Electric Heat Multipliers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Additional Static Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Thermostat Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SECTION I: GENERAL INFORMATION
PCE units are factory assembled air conditioners designed for outdoor
installation on a roof top or a slab. Field-installed electric heater acces-
sories are available to provide electric heat.
The units are completely assembled on rigid, removable base rails. All
piping, refrigerant charge, and electrical wiring is factory installed and
tested. The units require only electric power and duct connections at
the point of installation.
SECTION II: SAFETY
This is a safety alert symbol. When you see this symbol on
labels or in manuals, be alert to the potential for personal
injury.
Understand and pay particular attention to the signal words
DANGER
,
WARNING
, or
CAUTION
.
DANGER
indicates an
imminently
hazardous situation, which, if not
avoided,
will result in death or serious injury
.
WARNING
indicates a
potentially
hazardous situation, which, if not
avoided,
could result in death or serious injury
.
CAUTION
indicates a potentially hazardous situation, which, if not
avoided
may result in minor or moderate injury.
It is also used to
alert against unsafe practices and hazards involving only property dam-
age.
WARNING
Improper installation may create a condition where the operation of
the product could cause personal injury or property damage.
Improper installation, adjustment, alteration, service or maintenance
can cause injury or property damage. Failure to carefully read and
follow all instructions in this manual can result in furnace mal-
function, death, personal injury and/or property damage. Only a
qualified contractor, installer or service agency should install this
product.
CAUTION
This product must be installed in strict compliance with the installa-
tion instructions and any applicable local, state, and national codes
including, but not limited to building, electrical, and mechanical
codes.
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