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INSTALLATION MANUAL
SINGLE STAGE ECM
RESIDENTIAL GAS FURNACES
MODELS: TM8E, TMLE
(80% Multi-Position/Standard & Low NOx)
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
GAS PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ELECTRICAL POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
TWINNING AND STAGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
VENT SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Duct Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Furnace and Coil Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Combustible Floor Base Accessory . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Horizontal Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Typical Attic Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Typical Suspended Furnace / Crawl Space Installation . . . . . . . . . . . 7
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Side Return Cutout Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Cabinet and Duct Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Recommended Filter Sizes (High Velocity 600 FPM) . . . . . . . . . . . . 8
Nominal Manifold Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Ratings & Physical / Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . 11
Estimated Free Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
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 Ducted Systems
LIST OF SECTIONS
START-UP AND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
REPLACEMENT PART CONTACT INFORMATION . . . . . . . . . . . . 25
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
START UP SHEET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
LIST OF FIGURES
Twinned Furnaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Combustion Air Inducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Furnace Casing to the Burner Compartment . . . . . . . . . . . . . . . . . . 14
Ambient Combustion Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Reading Gas Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Furnace Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
LIST OF TABLES
Unconfined Space Minimum Area . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Free Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Gas Rate (CU FT/HR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Inlet Gas Pressure Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Nominal Manifold Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Default Blower Speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Blower Performance CFM - Any Position (without filter) . . . . . . . . . . 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 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.
WARNING
!
5594752-UIM-C-1119
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Summary of Contents for Johnson Controls TM8E
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Page 1: Table Of Contents
INSTALLATION MANUAL SINGLE STAGE ECM RESIDENTIAL GAS FURNACES MODELS: TM8E, TMLE (80% Multi-Position/Standard & Low NOx) LIST OF SECTIONS SAFETY ..........1 START-UP AND ADJUSTMENTS . - Page 2 Do not use the top return bend of the heat exchangers as lift- • Cements and glues ing points as the tubes may shift out of position or their location brackets/baffles. • Anti-static fabric softeners for clothes dryers • Masonry acid washing materials Johnson Controls Ducted Systems...
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Page 3: Safety
STEP 5 -Acoustical Lining and Fibrous Glass Duct with the provisions of 248 CMR 5.08(2)(a)1 through 4. • US and CANADA: Current edition of SMACNA and NFPA 90B as tested by UL Standard 181 for Class I Rigid Air Ducts Johnson Controls Ducted Systems... -
Page 4: Ductwork
The mini- the furnace. Cooled air may not be passed over the heat exchanger. mum recommended rectangular duct height is 4” (10.1 cm) attached to the plenum. Johnson Controls Ducted Systems... - Page 5 The indoor coil must be mounted on the supply side of the furnace as shown in Figure 2. Refer to the Installation Instructions provided with each indoor coil. FIGURE 1: Duct Attachment Johnson Controls Ducted Systems...
- Page 6 The combustion air inducer must be rotated 90° as shown in Fig- ure 15. DO NOT BLOCK COMBUSTION AIR INLET OPENINGS. Johnson Controls Ducted Systems...
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Page 7: Horizontal Application
(bottom or sides) or supply air opening. Johnson Controls Ducted Systems... -
Page 8: Filters
CFM greater than 1800, you may use two side returns or one side and the Single side return above 1800 CFM is approved as long as the filter bottom or one return with a transition to allow use of a 20x25 filter. velocity does not exceed filter manufacturer’s recommendation. Johnson Controls Ducted Systems... -
Page 9: Gas Piping
Drip Leg Union Union External Ground Manual Union Shut-off Valve Pipe Valve Valve Drip Drip Drip Drip To Gas Gas Pipe Supply Ground Upflow Downflow Horizontal Union Drip Leg Configuration Configuration Configuration FIGURE 10: Gas Piping Johnson Controls Ducted Systems... -
Page 10: Nominal Manifold Pressure
Do not attempt to drill out any orifices to obtain the proper orifice size. Drilling out a gas orifice will cause misalignment of the burner flames, caus- ing premature heat exchanger burnout, high levels of carbon monoxide, excessive sooting, a fire hazard, personal injury, property damage and/or death. Johnson Controls Ducted Systems... -
Page 11: Electrical Power
4” (10.1 cm) box and cover on the outside of the furnace. Route the furnace leads into the box using a protective bushing where the wires pass through the furnace panel. After making the wiring connections replace the wiring box cover and screws. Refer to Figure 11. Johnson Controls Ducted Systems... -
Page 12: Thermostat Chart - Single Stage Ac With Single Stage Furnaces
Two 1/4” (6.4 mm) spade terminals (EAC and NEUTRAL) for electronic control board for mounting a humidifier transformer if required. air cleaner connections are located on the control board. The terminals provide 115VAC (1.0 Amp maximum) during circulating blower opera- tion. Johnson Controls Ducted Systems... -
Page 13: Vent System
B-vent or masonry chimney (as allowed), using single wall metal pipe or B-vent connectors. Type B-vent system extends in a general vertical direction and does not contain offsets exceeding 45º. A vent system having not more than one 60º offset is permitted. FIGURE 14: Twinned Furnaces Johnson Controls Ducted Systems... -
Page 14: Combustion Airflow Path Through The Furnace Casing To The Burner Compartment
) per 1,000 Btu/ Appliance 1 Appliance 2 Total Input hr (0.2928 kW) input rating for all of the appliances installed in that + 30,000 = (130,000 2,000) = 65 Sq. In. Horizontal 100,000 area. Johnson Controls Ducted Systems... -
Page 15: Ambient Combustion Air
Carbon Monoxide or an unsafe condition to occur. a. 1 in. / 3,000 BTU/hr (700mm2/kW) of the total input rating of all equipment located in the enclosure. b. Not less than the sum of all vent connectors in the confined space. Johnson Controls Ducted Systems... - Page 16 7. With the burner assembly out of the way, simply slide the NOx screens out of the heat exchanger tubes and discard the screens. 8. Replace all components in reverse order. Reconnect all wiring. Johnson Controls Ducted Systems...
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Page 17: Gas Piping
The ignition control will make 3 attempts to light before lock- Be sure to relight any gas appliances that were turned off at the start ing out. of this input check. Johnson Controls Ducted Systems... -
Page 18: Gas Rate (Cu Ft/Hr)
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 Ducted Systems... -
Page 19: Nominal Manifold Pressure
Refer to Figure 19 for connection details. IMPORTANT: The cap for the pressure regulator must be removed to gain access to the adjustment screw. Loosening or tightening the cap does not adjust the flow of gas. FIGURE 19: Reading Gas Pressure Johnson Controls Ducted Systems... -
Page 20: Default Blower Speeds
Figure 20. 4. With the FAN SPEED jumper in the “HEAT” position, the blower will run during continuous fan operation at the motor speed connected to the “HEAT” terminal on the control board. Johnson Controls Ducted Systems... -
Page 21: Furnace Control Board
1310 1256 1413 1362 1304 1247 1195 1148 1095 1046 High 1360 1321 1288 1259 1223 1182 1146 1105 Medium High 1197 1154 1127 1085 1046 1005 100B12 Medium 1016 Medium Low Continued on next Page. Johnson Controls Ducted Systems... -
Page 22: Safety Controls
3. Too many supply or return registers closed or blocked off. The control module will lockout if the limit trips 5 consecutive times. If this occurs, control will reset & try ignition again after 1 hour. Johnson Controls Ducted Systems... - Page 23 Check for a faulty pressure switch or miswiring. Johnson Controls Ducted Systems...
- Page 24 This condition is usually caused by a failed blower motor or blower wheel. The control will enter a hard lockout and power will have to be cycled off and on to reset the control after the problem has been corrected. Johnson Controls Ducted Systems...
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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
221 degrés F (105 degrés C ). 2. Les connexions à grande vitesse du moteur du ventilateur indiqués sont typiques, mais peuvent varier selon le modèle et par application. 5594759-UWD-B-0319 FIGURE 21: Wiring Diagram Johnson Controls Ducted Systems... -
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 Ducted Systems... - Page 28 Explain thermostat use and programming (if applicable) to owner Additional Job Detail Subject to change without notice. Published in U.S.A. 5594752-UIM-C-1119 Copyright © 2019 by Johnson Controls. All rights reserved. Supersedes: 5594752-UIM-B-0419 York International Corp. 5005 York Drive Norman, OK 73069...
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