Johnson Controls GG9S*MP User Manual

38 pages

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364861-UIM-B-0708

EFFICIENCY

RATING

CERTIFIED

ISO 9001

Certified Quality

Management System

RESIDENTIAL GAS FURNACE MODELS

TG9S*MP, GG9S*MP

(95.5% AFUE Single Stage Multi-position)

INSTALLATION MANUAL

LIST OF SECTIONS

SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

GAS PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

ELECTRICAL POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

TWINNING AND STAGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

CONDENSATE PIPING AND FURNACE

VENTING CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

COMBUSTION AIR and VENT SYSTEM . . . . . . . . . . . . . . . . . . . .24

START-UP AND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . .31

SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

REPLACEMENT PART CONTACT INFORMATION . . . . . . . . . . . .39

WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

LIST OF FIGURES

Duct Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Vertical Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Coil Flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Horizontal Right Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Horizontal Left Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

PC Series Upflow Coil Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Horizontal Left or Right application (Right Shown) . . . . . . . . . . . . . . 6

Combustible Floor Base Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Horizontal Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Typical Attic Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Typical Suspended Furnace / Crawl Space Installation . . . . . . . . . . . 7

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Side Return Cutout Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Upflow/Downflow Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Horizontal Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Thermostat Chart - Single Stage AC with

Single Stage PSC Furnaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Thermostat Chart - Single Stage HP with

Single Stage PSC Furnaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Typical Twinned Furnace Application . . . . . . . . . . . . . . . . . . . . . . . 14

Single Stage Twinning Wiring Diagram . . . . . . . . . . . . . . . . . . . . . .15

Two-Stage Twinning Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . .15

Upflow Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Downflow Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Horizontal Left Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Horizontal Right Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Home Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Termination Configuration - 1 Pipe . . . . . . . . . . . . . . . . . . . . . . . . . .24

Termination Configuration - 2 Pipe . . . . . . . . . . . . . . . . . . . . . . . . . .24

Termination Configuration - 2 Pipe Basement . . . . . . . . . . . . . . . . .24

Double Horizontal Combustion Air Intake and Vent Termination . . .24

Double Vertical Combustion Air Intake and Vent Termination . . . . . 24

Direct Vent Air Intake Connection and Vent Connection . . . . . . . . .25

Combustion Airflow Path Through The Furnace Casing . . . . . . . . .25

Outside and Ambient Combustion Air . . . . . . . . . . . . . . . . . . . . . . . .26

Attic and Crawl Space Combustion Air Termination . . . . . . . . . . . . .27

Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Reading Gas Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Furnace Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Furnace Control Event Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

LIST OF TABLES

Unit Clearances to Combustibles . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Coil Projection Dimensions - PC Series Coils . . . . . . . . . . . . . . . . . . 6

Cabinet and Duct Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Recommended Filter Sizes (High Velocity 600 FPM) . . . . . . . . . . . . 8

Nominal Manifold Pressure - High Fire . . . . . . . . . . . . . . . . . . . . . . 10

Ratings & Physical / Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . 11

Maximum Equivalent Pipe Length . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Elbow Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Equivalent Length of Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Combustion Air Intake and Vent Connection Size at Furnace (All Mod-

els) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Estimated Free Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Unconfined Space Minimum Area in Square Inch . . . . . . . . . . . . . .26

Free Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Gas Rate (CU FT/HR) at Full Input . . . . . . . . . . . . . . . . . . . . . . . . . .29

Inlet Gas Pressure Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Nominal Manifold Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

These high efficiency, compact units employ induced combustion, reli-

able hot surface ignition and high heat transfer aluminized tubular heat

exchangers. The units are factory shipped for installation in upflow or

horizontal applications and may be converted for downflow applica-

tions.

These furnaces are designed for residential installation in a basement,

closet, alcove, attic, recreation room or garage and are also ideal for

commercial applications. All units are factory assembled, wired and

tested to assure safe dependable and economical installation and oper-

ation.

These units are Category IV listed and may not be common vented with

another gas appliance as allowed by the National Fuel Gas Code.

SECTION I: 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.

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 mainte-

nance can cause injury or property damage. Failure to carefully

read and follow all instructions in this manual can result in fur-

nace malfunction, death, personal injury and/or property dam-

age. Only a qualified contractor, installer or service agency should

install this product.

Questions and Answers:

L
Lisa WrightJul 29, 2025
What to do if my Johnson Controls GG9S*MP is not operating?
- V
  Virginia FryJul 29, 2025
  If your Johnson Controls Furnace isn't operating, begin by verifying that the power to both the furnace and the ignition control module is turned ON. Ensure the manual shut-off valves in the gas line leading to the furnace are completely open. Check that all wiring connections are securely fastened. Finally, review the furnace's operational sequence by initiating the system through setting the thermostat to a temperature higher than the current room temperature.