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INSTALLATION MANUAL
RESIDENTIAL GAS FURNACE MODELS
TG8S*MP, TGLS*MP, GG8S*MP, GGLS*MP
(Single Stage Multi-position / Low NOx)
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
GAS PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
ELECTRICAL POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
TWINNING AND STAGING . . . . . . . . . . . . . . . . . . . . . . . . .14
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
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
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 I listed and may 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.
LIST OF SECTIONS
VENT SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
START-UP AND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . .18
SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . .25
REPLACEMENT PART CONTACT INFORMATION . . . . . .25
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
LIST OF FIGURES
Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Single Stage PSC Furnaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Single Stage PSC Furnaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Typical Twinned Furnace Application . . . . . . . . . . . . . . . . . . . . . . . . 14
Single Stage Twinning Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . 15
Two-Stage Twinning Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . 15
Combustion Air Inducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Outside and Ambient Combustion Air . . . . . . . . . . . . . . . . . . . . . . . . 17
Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Reading Gas Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Furnace Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Furnace Control Event Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
LIST OF TABLES
Estimated Free Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Unconfined Space Minimum Area in Square Inch . . . . . . . . . . . . . . 17
Free Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Gas Rate (CU FT/HR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Inlet Gas Pressure Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Nominal Manifold Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
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.
EFFICIENCY
RATING
CERTIFIED
ISO 9001
Certified Quality
Management System
356485-UIM-D-0708
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Table of Contents
Related Manuals for Johnson Controls Unitary Products TG8SxMP series
Summary of Contents for Johnson Controls Unitary Products TG8SxMP series
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Page 1: Table Of Contents
INSTALLATION MANUAL RESIDENTIAL GAS FURNACE MODELS EFFICIENCY TG8S*MP, TGLS*MP, GG8S*MP, GGLS*MP RATING CERTIFIED ISO 9001 (Single Stage Multi-position / Low NOx) Certified Quality Management System LIST OF SECTIONS SAFETY .........1 VENT SYSTEM . -
Page 2: Combustion Air Quality
Johnson Controls Unitary Products... -
Page 3: Safety
There are no shipping or spacer brackets • CANADA: NSCNGPIC Part 5 which need to be removed from the interior of this unit. STEP 7 -Electrical Connections • US: National Electrical Code (NEC) ANSI/NFPA 70 • CANADA: Canadian Electrical Code CSA C22.1 Johnson Controls Unitary Products... -
Page 4: Ductwork
The cooling coil must be installed in the supply air duct, down- stream of the furnace. Cooled air may not be passed over the heat exchanger. Johnson Controls Unitary Products... -
Page 5: Duct Attachment
The coils include removable flanges to allow proper fit up with furnaces having various inlet and outlet flange configurations. The two flanges are attached to the top of the coil in the factory during production. For proper configuration of flanges refer to Figure 3. Johnson Controls Unitary Products... -
Page 6: Coil Flange
FIGURE 7: Horizontal Left or Right application (Right Shown) Do not drill any holes or drive any screws into the front duct flange on the coil in order to prevent damaging coil tubing. See Figure 6 Johnson Controls Unitary Products... -
Page 7: Combustible Floor Base Accessory
FIGURE 9: Horizontal Application FIGURE 11: Typical Suspended Furnace / Crawl Space Installation This furnace may be installed in a horizontal position on either side as shown above. It must not be installed on its back. Johnson Controls Unitary Products... -
Page 8: Filters
2. Do not exceed 1800 CFM using a single side return and a 16x25 filter. For CFM greater than 1800, you may use two side returns or one side and the bottom or one return with a transition to allow use of a 20x25 filter. Johnson Controls Unitary Products... -
Page 9: Gas Piping
The furnace must be isolated from the gas supply piping system by closing its individual external manual shutoff valve during any pressure testing of the gas supply piping system at pressures equal to or less than 1/2 psig (3.5 kPa). Johnson Controls Unitary Products... -
Page 10: Electrical Power
63°F (35°C) rise wire when installed in accordance with instructions. Refer to Table 6 in these instructions for specific furnace electrical data. The residential supply must have a bonded neutral. Johnson Controls Unitary Products... -
Page 11: Ratings & Physical / Electrical Data
After making the wiring connections replace the wiring box cover and screws. Refer to Figure 17. The furnace's control system requires correct polarity of the power supply and a proper ground connection. Refer to Figure 17 Johnson Controls Unitary Products... -
Page 12: Thermostat Chart - Single Stage Ac With Single Stage Psc Furnaces
24VAC Humidifier (Optional) Humidistat Clipping Jumper W914 for electric heat on thermostat is not necessary Other Part Numbers: SAP = Legacy 265901 = 031-09166 FIGURE 18: Thermostat Chart - Single Stage AC with Single Stage PSC Furnaces Johnson Controls Unitary Products... -
Page 13: Thermostat Chart - Single Stage Hp With Single Stage Psc Furnaces
Menu must be set to Pump OFF Other Part Numbers: Part Numbers: Part Number: SAP = Legacy SAP = Legacy S1-2HU16700124 265901 = 031-09166 67297 = 031-01975 FIGURE 19: Thermostat Chart - Single Stage HP with Single Stage PSC Furnaces Johnson Controls Unitary Products... -
Page 14: Twinning And Staging
W2, will be supplying cold air in the Heating mode to the this relay is required, as it ensures that the transformers of the two occupied spaces unless W2 is energized. furnaces are isolated, thus preventing the possibility of any safety devices being bypassed. Johnson Controls Unitary Products... -
Page 15: Vent System
Pressure this relay is required, as it ensures that the transformers of the two Switch furnaces are isolated, thus preventing the possibility of any safety Mounting Screw devices being bypassed. (Remove) FIGURE 23: Combustion Air Inducer Johnson Controls Unitary Products... -
Page 16: Combustion Airflow Path Through The Furnace Casing To The Burner Compartment
Combustion air is brought into the furnace through the unit top panel opening. Johnson Controls Unitary Products... -
Page 17: Outside And Ambient Combustion Air
12 in (30.5 mm) of bottom of the confined space, Two permanent openings, shall communicate directly or by means of ducts with the outdoors, crawl spaces or attic spaces. Vent and Supply (Outside) Air Safety Check Procedure Johnson Controls Unitary Products... -
Page 18: Start-Up And Adjustments
(propane) gas, the screens must be removed prior to start-up. Replace all components in reverse order. Reconnect all wiring. Make sure that the electrical power to the unit is turned off and that the gas supply is turned off at the shut-off valve. Johnson Controls Unitary Products... - Page 19 Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically for the detection of leaks to check all connections. A fire or explosion may result causing property damage, personal injury or loss of life. Johnson Controls Unitary Products...
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Page 20: Gas Rate (Cu Ft/Hr)
Follow the appropriate section in the instructions below. Refer to Figure Turn gas and electrical supplies on and follow the operating 26 for a drawing of the locations of the pressure ports on the gas valve. instructions to place the unit back in operation. Johnson Controls Unitary Products... -
Page 21: Gas Valve
Figure 28. in operation, check for gas leakage around the gas valve pressure port for leakage using an approved non-corrosive gas leak detec- tion fluid, or other non-flammable leak detection methods. Johnson Controls Unitary Products... -
Page 22: Safety Controls
See Figure 28. The heat- ing cycle is now complete, and ready for the start of the next heating cycle. Johnson Controls Unitary Products... -
Page 23: Tions
Cycle power (24 VAC) to the control to field repairable. reset the hard lockout condition after correcting the failure condition. Johnson Controls Unitary Products... -
Page 24: Furnace Control Event Schedule
Thermostat Satisfied (Seconds) Fan on Delay 30 Seconds THERMOSTAT INDUCER Sec. Post IGNITOR Purge MAIN VALVE HUMIDIFIER ELECTRONIC AIR CLEANER CIRCULATING BLOWER 60, 90, 120, 180 SEC. Selectable Fan Off Delay FIGURE 29: Furnace Control Event Schedule Johnson Controls Unitary Products... -
Page 25: Replacement Parts List
3. Customer Service contact information. a. Click on the “Brand Links” button b. Click on the “Customer Service” button • You can contact us by mail. Just send a written request to: Johnson Controls Unitary Products Consumer Relations 5005 York Drive Norman, OK 73069... -
Page 26: Wiring Diagram
SECTION XI: WIRING DIAGRAM FIGURE 30: Wiring Diagram Subject to change without notice. Printed in U.S.A. 356485-UIM-D-0708 Copyright © 2008 by Johnson Controls, Inc. All rights reserved. Supersedes: 356485-UIM-C-0608 Johnson Controls Unitary Products 5005 York Drive Norman, OK 73069...
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