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437642-UIM-C-0210

2

Johnson Controls Unitary Products

SPECIFIC SAFETY RULES AND PRECAUTIONS

1.

Only Natural gas or Propane (LP) gas are approved for use with
this furnace.

2.

Install this furnace only in a location and position as specified in
these instructions.

3.

A gas-fired furnace for installation in a residential garage must be
installed as specified in these instructions.

4.

Provide adequate combustion and ventilation air to the furnace
space as specified in these instructions.

5.

Combustion products must be discharged outdoors. Connect this
furnace to an approved vent system only, as specified in SEC-
TION VI of these instructions.

6.

Test for gas leaks as specified in these instructions.

7.

Always install the furnace to operate within the furnace’s intended
temperature rise range. Only connect the furnace to a duct system
which has an external static pressure within the allowable range,
as specified on the furnace rating plate.

8.

When a furnace is installed so that supply ducts carry air circulated
by the furnace to areas outside the space containing the furnace,
the return air shall also be handled by duct(s) sealed to the fur-
nace casing and terminating outside the space containing the fur-
nace.

9.

It is permitted to use the furnace for heating of buildings or struc-
tures under construction where the application and use must com-
ply with all manufacturer’s installation instructions including:

Proper vent installation;

Furnace operating under thermostatic control;

Return air duct sealed to the furnace;

Air filters in place;

Set furnace input rate and temperature rise per rating plate
marking;

Means for providing outdoor air required for combustion;

Return air temperature maintained between 55ºF (13ºC) and
80ºF (27ºC);

The 

air filter must be replaced

 upon substantial completion of

the construction process;

Clean furnace, duct work and components upon substantial
completion of the construction process, and verify furnace-
operating conditions including ignition, input rate, temperature
rise and venting, according to the manufacturer’s instructions.

10. When installed in a non-HUD-Approved Modular Home or building

constructed on-site, combustion air shall not be supplied from
occupied spaces.

11.

The size of the unit should be based on an acceptable heat loss
calculation for the structure. ACCA, Manual J or other approved
methods may be used.

12. When moving or handling this furnace prior to installation it is rec-

ommended to leave the doors on the furnace to provide support
and to prevent damage or warping of the cabinet. When lifting the
furnace by the cabinet, support the ends of the furnace rather than
lifting by the cabinet flanges at the return air openings (bottom or
sides) or supply air opening.

13. When lifting the furnace, it is acceptable to use the primary heat

exchanger tubes as a lifting point provided that the tubes are lifted
at the front of the heat exchangers where attached to the vestibule
panel. Do not use the top return bend of the heat exchangers as
lifting points as the tubes may shift out of position or their location
brackets/baffles.

SAFETY REQUIREMENTS

Refer to the unit rating plate for the furnace model number, and
then see the dimensions page of this instruction for return air ple-
num dimensions in Figure 12. The plenum must be installed
according to the instructions.

Provide clearances from combustible materials as listed under
Clearances to Combustibles.

Provide clearances for servicing ensuring that service access is
allowed for both the burners and blower.

These models 

ARE NOT 

CSA listed or approved for installation

into a 

HUD Approved Modular Home

 or a 

Manufactured

(Mobile) Home

.

This furnace is not approved for installation in trailers or recre-
ational vehicles.

Furnaces for installation on combustible flooring shall not be
installed directly on carpeting, tile or other combustible material
other than wood flooring.

Check the rating plate and power supply to be sure that the elec-
trical characteristics match. All models use nominal 115 VAC, 1
Phase, 60 Hz power supply. DO NOT CONNECT THIS APPLI-
ANCE TO A 50 Hz POWER SUPPLY OR A VOLTAGE ABOVE
130 VOLTS.

Furnace shall be installed so the electrical components are pro-
tected from water.

Installing and servicing heating equipment can be hazardous due
to the electrical components and the gas fired components. Only
trained and qualified personnel should install, repair, or service
gas heating equipment. Untrained service personnel can perform
basic maintenance functions such as cleaning and replacing the
air filters. When working on heating equipment, observe precau-
tions in the manuals and on the labels attached to the unit and
other safety precautions that may apply.

FIRE OR EXPLOSION HAZARD
Failure to follow the safety warnings exactly could result in serious
injury, death or property damage.
Never test for gas leaks with an open flame. Use a commercially
available soap solution made specifically for detection of leaks to
check all connections. A fire or explosion may result causing prop-
erty damage, personal injury or loss of life.

During installation, doors should remain on the furnace when
moving or lifting.

This product must be installed in strict compliance with the installa-
tion instructions and any applicable local, state, and national codes
including, but not limited to building, electrical, and mechanical
codes.

Summary of Contents for TM8X*MP Series

Page 1: ...Return 22 Blower Performance CFM Any Position without filter Left Side Return 23 These high efficiency compact units employ induced combustion reli able hot surface ignition and high heat transfer alu...

Page 2: ...abinet support the ends of the furnace rather than lifting by the cabinet flanges at the return air openings bottom or sides or supply air opening 13 When lifting the furnace it is acceptable to use t...

Page 3: ...the National Fire Protection Association Inc Batterymarch Park Quincy MA 02269 or for only the NFGC contact the American Gas Association 400 N Capital N W Washington DC 20001 or www NFPA org CANADA NS...

Page 4: ...xide detector with an alarm and battery back up is installed on the floor level where the gas equipment is to be installed In addition the installing plumber or gasfitter shall observe that a battery...

Page 5: ...access cover shall be attached in such a manner as to prevent leaks DUCT FLANGES Four flanges are provided to attach ductwork to the furnace These flanges are rotated down for shipment In order to use...

Page 6: ...uld always be installed on the side desig nated as top side See Figures 4 5 FURNACE ASSEMBLY PC SERIES COILS These upflow coils are designed for installation on top of upflow fur naces only If the coi...

Page 7: ...e unit BOTTOM RETURN AND ATTIC INSTALLATIONS Bottom return applications normally pull return air through a base plat form or return air plenum Be sure the return platform structure or return air plenu...

Page 8: ...15 2 cm minimum clearance between the front of the furnace and the support rods or straps All six suspension points must be level to ensure proper and quiet fur nace operation When suspending the fur...

Page 9: ...stat Wiring FRONT 14 1 1 5 23 SUPPLY END C 24 38 20 5 B Gas Pipe Entry Thermostat Wiring 33 A 5 Electrical Entry Vent Connection Outlet Vent Connection Outlet 4 Diameter Outlet Vent Connection Table 3...

Page 10: ...r side of the furnace using any of the gas pipe entry on both sides of the furnace Refer to Figure 12 All filters and mounting provision must be field supplied All installa tions must have a filter in...

Page 11: ...0 87 0 87 0 81 1000 3 5 3 2 2 9 37 3 0 87 0 80 0 73 1050 3 5 2 9 2 7 39 1 0 87 0 73 0 67 1100 3 2 2 7 2 4 41 0 0 80 0 66 0 61 2500 LP 9 8 8 2 7 5 93 2 LP 2 44 2 03 1 86 PROPANE AND HIGH ALTITUDE CONVE...

Page 12: ...to power auxiliary devices such as humidifiers air cleaners etc The transformer may provide power for an air conditioning unit contactor ACCESSORY CONNECTIONS The furnace control will allow power swi...

Page 13: ...with Hi Efficiency Motor HM1 Humidistat Y Full Stage Compressor G Fan PP11C70224 THERMOSTAT RH 24 Volt Hot Heat XFMR RC 24 Volt Hot Cool XFMR W Full Stage Heat Clipping Jumper W914 for electric heat...

Page 14: ...t Numbers SAP Legacy 67297 031 01975 E B E ZD E R OD MODELS HGD HP RHS O Reversing Valve Energized in Cool C 24 Volt Common R 24 Volt Hot W1 66 out Heat Y Compressor DEMAND DEFROST CONTROL X L Malfunc...

Page 15: ...mney must extend at least 5 ft 1 5 m above the highest equipment draft hood or flue collar FAN ASSISTED COMBUSTION SYSTEM This appliance is equipped with an integral mechanical means to either draw pr...

Page 16: ...free area Ventilated Combustion Air The ventilated attic space or a crawl space from which the combustion air is taken must comply with the requirements specified in AIR SOURCE FROM OUTDOORS in this i...

Page 17: ...other appliances connected to the venting system are not in operation 1 Inspect the venting system for proper size and horizontal pitch Determine that there is no blockage restriction leakage corrosio...

Page 18: ...non corrosive leak detection fluid or other leak detection methods Take appropriate steps to stop any leak If a leak persists replace the component CALCULATING THE FURNACE INPUT NATURAL GAS Verify na...

Page 19: ...22 164 327 818 64 56 112 281 23 157 313 783 66 54 109 273 24 150 300 750 68 53 106 265 25 144 288 720 70 51 103 257 26 138 277 692 72 50 100 250 27 133 267 667 74 48 97 243 28 129 257 643 76 47 95 23...

Page 20: ...n and follow the operating instructions to place the unit back in operation 3 Adjust manifold pressure by adjusting gas valve regulator screw for the appropriate gas per the following 4 After the mani...

Page 21: ...must be long enough to adequately cool the furnace but not so long that cold air is blown into the heated space The fan off timing may be adjusted by positioning the jumper on two of the four pins as...

Page 22: ...638 2540 2448 2339 2224 2111 1974 1831 Medium High 2234 2233 2147 2092 2042 1974 1907 1820 1705 1575 Medium Low 1722 1716 1690 1681 1603 1553 1489 1426 1335 1241 Low 1396 1375 1348 1325 1263 1200 1150...

Page 23: ...ow 1126 1115 1095 1049 1027 996 957 929 840 742 080C22 High 2972 2863 2769 2671 2571 2465 2352 2227 2095 1950 Medium High 2173 2146 2103 2082 2036 1966 1904 1827 1738 1621 Medium Low 1670 1667 1647 16...

Page 24: ...HI COOL speed when Y1 and Y2 are energized Heating Cycle When the thermostat switch is set on HEAT and the fan is set on AUTO and there is a call for heat a circuit is completed between terminals R a...

Page 25: ...pressure switch hose or faulty pressure switch 4 RED FLASHES This indicates that the main limit switch has opened its normally closed contacts The control will operate the supply air blower and induce...

Page 26: ...L Models Only MISCELLANEOUS ORIFICE BURNER Natural 45 SIGHT GLASS OVAL 2 Req d GASKET FOAM Door 1 5 ft req d GASKET INTAKE PAN PLUG VENT HOLE BRACKET DOOR WIRING HARNESS FERRULE 3 Req d GROMMET 3 Req...

Page 27: ...437642 UIM C 0210 Johnson Controls Unitary Products 27 SECTION X WIRING DIAGRAM FIGURE 25 Wiring Diagram...

Page 28: ...hange without notice Published in U S A 437642 UIM C 0210 Copyright 2010 by Johnson Controls Inc All rights reserved Supersedes 437642 UIM B 0109 Johnson Controls Unitary Products 5005 York Drive Norm...

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