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INSTALLATION MANUAL
SINGLE STAGE ECM
RESIDENTIAL GAS FURNACES
MODELS: TM8X, TMLX
(80% Multi-position/Standard & Low NOx)
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
GAS PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
ELECTRICAL POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
VENT SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Duct Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Vertical Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Coil Flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Horizontal Right Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Horizontal Left Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
PC Series Upflow Coil Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Horizontal Left or Right application (Right Shown) . . . . . . . . . . . . . . 7
Combustible Floor Base Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Horizontal Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Typical Attic Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Typical Suspended Furnace / Crawl Space Installation . . . . . . . . . . . 8
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Side Return Cutout Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Unit Clearances to Combustibles . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Coil Projection Dimensions - PC Series Coils . . . . . . . . . . . . . . . . . . 6
Cabinet and Duct Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Recommended Filter Sizes (High Velocity 600 FPM) . . . . . . . . . . . . 9
Nominal Manifold Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Ratings & Physical / Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . 11
Estimated Free Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
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.
Johnson Controls Unitary Products
LIST OF SECTIONS
START-UP AND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . 17
SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
REPLACEMENT PART CONTACT INFORMATION . . . . . . . . . . . . 25
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
START UP SHEET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
LIST OF FIGURES
Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Combustion Air Inducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Casing to the Burner Compartment . . . . . . . . . . . . . . . . . . . . . . . . . 15
Outside and Ambient Combustion Air . . . . . . . . . . . . . . . . . . . . . . . . 16
Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Reading Gas Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Furnace Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
LIST OF TABLES
Unconfined Space Minimum Area . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Free Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Gas Rate (CU FT/HR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Inlet Gas Pressure Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Nominal Manifold Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Blower Performance CFM - Any Position (without filter) . . . . . . . . . . 22
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.
998492-UIM-D-0715
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Related Manuals for Johnson Controls Unitary Products TMLX
Summary of Contents for Johnson Controls Unitary Products TMLX
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Page 1: Table Of Contents
INSTALLATION MANUAL SINGLE STAGE ECM RESIDENTIAL GAS FURNACES MODELS: TM8X, TMLX (80% Multi-position/Standard & Low NOx) LIST OF SECTIONS SAFETY ..........1 START-UP AND ADJUSTMENTS . - Page 2 11. The size of the unit should be based on an acceptable heat loss calculation for the structure. ACCA, Manual J or other approved tions in the manuals and on the labels attached to the unit and methods may be used. other safety precautions that may apply. Johnson Controls Unitary Products...
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Page 3: Safety
In some instances these instructions exceed certain local codes and ordinances, especially those who have not kept up with changing residential and non-HUD modular home construction practices. These instructions are required as a minimum for a safe installation. Johnson Controls Unitary Products... - Page 4 1. Special floor base or air conditioning coil required for use on combustible floor. 2. Line contact only permitted between lines formed by the intersection of the rear panel and side panel (top in horizontal position) of the furnace jacket and building joists, studs or framing. Johnson Controls Unitary Products...
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Page 5: Ductwork
This access cover shall be attached in such a manner as to prevent leaks. Johnson Controls Unitary Products... -
Page 6: Coil Flange
PC24 4-1/2 PC30, PC32, PC35 4-1/2 Mounting Plate PC42, PC43, PC36, PC37 5-1/2 PC48 6-1/2 PC60 Furnace Dimension “C” should be at least 2/3 of dimension “D”. See Figure 6 FIGURE 4: Horizontal Right Application Johnson Controls Unitary Products... -
Page 7: Gas Piping
18” (45.7 cm) 12” Openings is COMBUSTIBLE FLOOR from the Recommended BASE ACCESSORY furnace 12” 30” MIN. Work Area FIGURE 8: Combustible Floor Base Accessory Return Sediment Trap FIGURE 10: Typical Attic Installation Johnson Controls Unitary Products... -
Page 8: Typical Suspended Furnace / Crawl Space Installation
Place one support at the supply end of the furnace, bend of the heat exchangers as lifting points as the tubes may shift out one support located approximately in the center of the furnace near the of position or their location brackets/baffles. Johnson Controls Unitary Products... - Page 9 CFM greater than 1800, you may use two side returns or one side and the cut the opening larger than the dimensions shown in Figure 12. bottom or one return with a transition to allow use of a 20x25 filter. Johnson Controls Unitary Products...
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Page 10: Gas Valve
1/2 psig (3.5 kPa). Gas piping may be connected from either side of the furnace using any of the gas pipe entry on both sides of the furnace. Refer to Figure 12. Johnson Controls Unitary Products... -
Page 11: Electrical Power
Annual Fuel Utilization Efficiency (AFUE) numbers are determined in accordance with DOE Test procedures. Wire size and over current protection must comply with the National Electrical Code (NFPA-70-latest edition) and all local codes. The furnace shall be installed so that the electrical components are protected from water. Johnson Controls Unitary Products... -
Page 12: Electrical Wiring
The transformer may provide power for an panel. After making the wiring connections replace the wiring box air conditioning unit contactor. cover and screws. Refer to Figure 16. Johnson Controls Unitary Products... -
Page 13: Thermostat Chart - Single Stage Ac With Single Stage Furnaces
24 – Volt Hot (Cool XFMR) Full Stage Heat 24VAC Humidifier (Optional) Humidistat Clipping Jumper W914 for electric heat on thermostat is not necessary FIGURE 17: Thermostat Chart - Single Stage AC with Single Stage Furnaces Johnson Controls Unitary Products... -
Page 14: Thermostat Chart - Single Stage Hp With Single Stage Furnaces
115VAC (1.0 Amp maximum) during circulating blower opera- tion. These furnaces are not to be twinned. If more than one furnace is needed in an application, each furnace must have its own complete duct system and its own wall thermostat. Johnson Controls Unitary Products... -
Page 15: Vent System
(0.2928 kW) input rating for all of the appliances installed in that authority having jurisdiction. Venting into an unlined masonry chimney area. or concrete chimney is prohibited. Johnson Controls Unitary Products... - Page 16 The duct shall terminate within 12” (30.5 cm) above, and within 24” permanent openings, shall communicate directly or by means of (61 cm) horizontally from, the burner level of the appliance having ducts with the outdoors, crawl spaces or attic spaces. the largest input. Johnson Controls Unitary Products...
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Page 17: Start-Up And Adjustments
Be sure proper ventilation is available to dilute and carry away any vented gas. All electrical connections made in the field and in the factory should be checked for proper tightness. Johnson Controls Unitary Products... - Page 18 Set the thermostat above room temperature to call for heat. System start-up will occur as follows: The induced draft blower motor will start and come up to speed. Shortly after inducer start-up, the hot surface igniter will glow for about 17 seconds. Johnson Controls Unitary Products...
- Page 19 Size of Test Dial Seconds For Seconds For 1 Revolution 1 Revolution 1 Cu Ft 2 Cu Ft 5 Cu Ft 1 Cu Ft 2 Cu Ft 5 Cu Ft 1800 1636 1500 1385 1286 1200 1125 1059 1000 Johnson Controls Unitary Products...
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Page 20: Nominal Manifold Pressure
Refer to Figure 23 for connection details. 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 21: Furnace Control Board
Carbon Monoxide, a fire hazard, personal injury, property damage, and/or death. DIAGNOSTIC ERROR CODE RETRIEVAL BUTTON BLOWER OFF DELAY JUMPER ELECTRONIC AIR CLEANER TERMINAL CONTINUOUS FAN SPEED JUMPER HUMIDIFIER TERMINAL FIGURE 24: Furnace Control Board Johnson Controls Unitary Products... -
Page 22: Blower Performance Cfm - Any Position (Without Filter)
1370 1320 1270 1220 1160 1090 Medium Low 1410 1350 1290 1240 1180 1130 1070 1020 1190 1130 1060 1000 NOTES: 1. Airflow expressed in standard cubic feet per minute (SCFM). Motor voltage at 115 V. Johnson Controls Unitary Products... -
Page 23: Safety Controls
COOL speed when Y1 is energized and on HI COOL speed when Y1 Do not try to repair controls. Replace defective controls with UPG and Y2 are energized. Source 1 Parts. Never adjust pressure switch to allow furnace operation. Johnson Controls Unitary Products... -
Page 24: Furnace Control Diagnostics
The furnace will lock out for one hour and for more than five seconds. The LED will flash three green flashes when then restart. the memory has been cleared, then will resume the normal slow green flash after a five-second pause. 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
998492-UIM-D-0715 SECTION X: WIRING DIAGRAM Wiring Diagram - 80% Furnace TM8X, TMLX CAUTION PRECAUTION OPEN ALL DISCONNECTS BEFORE OUVREZ LES DISJONCTEURS AVANT SERVICING THIS UNIT DE PROCEDER AVEC LE SERVICE BLU/WHT RED-LOW YEL-MED LO Legend GRY-MED DS - Door switch... -
Page 27: Start Up Sheet
Line voltage to furnace (AC) Electrical: Low Voltage Thermostat wiring is complete Thermostat heat anticipator set to .45 (if present) Low voltage value between "R" and "C" on furnace control board (volts AC) Continued on next Page Johnson Controls Unitary Products... - Page 28 Gas Side Gas Type Natural Gas LP Gas (Requires LP conversion kit) LP Gas Conversion Kit Part # Used LP Conversion Kit Installed By Inlet Gas Pressure (in. w.c.") Manifold Gas Pressure (in. w.c.") Calculated input in btuh - clock the gas meter (Nat Gas Only) Burner flame inspected -- flames are blue and extending directly into the primary heat exchanger cells Air Side: System External Static Pressure Supply static before evaporator coil (in w.c.")
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