Johnson Controls Unitary Products 5285473-UIM-E-1217
®
SINGLE PACKAGE
AIR CONDITIONER / GAS HEAT
MODELS: PCG6 SERIES
3 THRU 5 TONS – 208/230V - 3 PHASE
INSTALLATION MANUAL
LIST OF SECTIONS
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
MODEL NUMBER NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
AIRFLOW PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
TYPICAL WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
START UP SHEET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
LIST OF FIGURES
Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Center of Gravity Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Bottom Duct Dimensions (inches) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Rear Duct Dimensions (inches) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typical Field Control Wiring Diagram For Gas Heat - AC Models . . . 7
Typical Field Power Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . 7
Flue Vent Outlet Air Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Gas Valve 19
Reading Gas Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Measuring External Static Pressure . . . . . . . . . . . . . . . . . . . . . . . . .21
Connection Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Ladder Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
R-410A Quick Reference Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
LIST OF TABLES
Unit Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Weights and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Unit Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Natural Gas Pipe Sizing Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Propane (LP) Gas Pipe Sizing Chart . . . . . . . . . . . . . . . . . . . . . . . . 10
Natural Gas Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Propane,4 (LP) Gas Application Data . . . . . . . . . . . . . . . . . . . . . . . .11
Airflow Performance - Side Duct Application . . . . . . . . . . . . . . . . . .11
Additional Static Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Ignition Control Board Flash Codes . . . . . . . . . . . . . . . . . . . . . . . . .17
Delay Profile Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Inlet Gas Pressure Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Nominal Manifold Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Gas Rate Cubic Feet Per Hour . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
SECTION I: GENERAL INFORMATION
These are electric cooling/gas heating units designed for outdoor instal-
lation. Only gas piping, electric power and duct connections are
required for installation.
The gas-fired heaters have spark ignition.
The refrigerant system is fully charged with R-410A Refrigerant. The
system is tested and factory sealed.
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.
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