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1083293-UIM-D-1116

MODULATING PSC
RESIDENTIAL GAS FURNACES 

MODELS: TM9M Series

(97% AFUE Multi-position)

INSTALLATION MANUAL

LIST OF SECTIONS

SAFETY   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
DUCTWORK  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
FILTERS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
GAS PIPING  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
ELECTRICAL POWER  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
CONDENSATE PIPING AND FURNACE 
VENTING CONFIGURATION  . . . . . . . . . . . . . . . . . . . . . . . . . . 19
COMBUSTION AIR and VENT SYSTEM  . . . . . . . . . . . . . . . . . 25

START-UP AND ADJUSTMENTS  . . . . . . . . . . . . . . . . . . . . . . 33
SAFETY CONTROLS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
NORMAL OPERATION AND DIAGNOSTICS  . . . . . . . . . . . . . 38
REPLACEMENT PARTS LIST  . . . . . . . . . . . . . . . . . . . . . . . . . 40
REPLACEMENT PART CONTACT INFORMATION  . . . . . . . . 40
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
START UP SHEET  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

LIST OF FIGURES

Duct Attachment   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Combustible Floor Base Accessory . . . . . . . . . . . . . . . . . . . . . . . 6
Horizontal Application (Typical)  . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typical Attic Installation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typical Suspended Furnace / Crawl Space Installation   . . . . . . . 7
Downflow Venting   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Vertical Applications (Typical)  . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Coil Cabinet Attachment Flanges   . . . . . . . . . . . . . . . . . . . . . . . . 7
Horizontal Right Application (Typical)  . . . . . . . . . . . . . . . . . . . . . 8
Horizontal Left Application  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
PC Series Upflow Coil Installation  . . . . . . . . . . . . . . . . . . . . . . . . 8
Horizontal Left or Right application (Right Shown)   . . . . . . . . . . . 8
Dimensions   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Side Return Cutout Markings   . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Gas Valve   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Gas Piping  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Electrical Wiring  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Thermostat Chart - Single Stage Air Conditioner – 
Variable Speed or PSC Modulating Furnace . . . . . . . . . . . . . . . 13
Thermostat Chart - Two Stage Air Conditioner – 
Variable Speed or PSC Modulating Furnace . . . . . . . . . . . . . . . 14
Thermostat Chart - Two Stage Air Conditioner with Single Stage 
Thermostat – Variable Speed or PSC Modulating Furnace   . . . 15
Thermostat Chart - Single Stage Heat Pump – 
Variable Speed or PSC Modulating Furnace . . . . . . . . . . . . . . . 16

Thermostat Chart - Single Stage Heat Pump – 
Variable Speed or PSC Modulating Furnace   . . . . . . . . . . . . . . 17
Thermostat Chart - Two Stage Heat Pump – 
Variable Speed or PSC Modulating Furnace   . . . . . . . . . . . . . . 18
Typical. Condensate Drain, Vertical Installation  . . . . . . . . . . . . 20
Upflow Configuration  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Downflow Configuration   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Horizontal Left Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Horizontal Right Configuration   . . . . . . . . . . . . . . . . . . . . . . . . . 24
Dimensions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Home Layout  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Termination Configuration - 1 Pipe  . . . . . . . . . . . . . . . . . . . . . . 29
Termination Configuration - 2 Pipe  . . . . . . . . . . . . . . . . . . . . . . 29
Termination Configuration - 2 Pipe Basement   . . . . . . . . . . . . . 29
Double Horizontal Combustion Air Intake 
and Vent Termination   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Double Vertical Combustion Air Intake and Vent Termination   . 30
Direct Vent Air Intake Connection and Vent Connection . . . . . . 30
Combustion Airflow Path Through The Furnace Casing  . . . . . . 30
Ambient Combustion Air  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Attic and Crawl Space Combustion Air Termination  . . . . . . . . . 32
Gas Valve  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Furnace Control Board   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Wiring Diagram  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

LIST OF TABLES

Unit Clearances to Combustibles   . . . . . . . . . . . . . . . . . . . . . . . . 4
Coil Projection Dimensions - PC Series Coils  . . . . . . . . . . . . . . . 8
Cabinet and Duct Dimensions  . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Recommended Filter Sizes (High Velocity 600 FPM)  . . . . . . . . . 9
High Altitude Orifices  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Ratings & Physical / Electrical Data   . . . . . . . . . . . . . . . . . . . . . 12
Maximum Equivalent Pipe Length  . . . . . . . . . . . . . . . . . . . . . . . 26
Elbow Dimensions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Equivalent Length of Fittings  . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Combustion Air Intake and Vent Connection 
Size at Furnace (All Models)  . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Estimated Free Area  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Unconfined Space Minimum Area . . . . . . . . . . . . . . . . . . . . . . . 31
Free Area   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Gas Rate (CU FT/HR) at Full Input  . . . . . . . . . . . . . . . . . . . . . . 34
Inlet Gas Pressure Range  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Nominal Manifold Pressure  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Cooling Airflow - A/C Capacity in Tons  . . . . . . . . . . . . . . . . . . . 36
Blower Performance CFM - Any Position  . . . . . . . . . . . . . . . . . 37

Summary of Contents for TM9M

Page 1: ...Variable Speed or PSC Modulating Furnace 16 Thermostat Chart Single Stage Heat Pump Variable Speed or PSC Modulating Furnace 17 Thermostat Chart Two Stage Heat Pump Variable Speed or PSC Modulating Fu...

Page 2: ...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 furna...

Page 3: ...urisdiction In the United States and Canada follow all codes and standards for the following using the latest edition available STEP 1 Safety US National Fuel Gas Code NFGC NFPA 54 ANSI Z223 1 and the...

Page 4: ...in every dwelling building or structure used in whole or in part for resi dential purposes including those owned or operated by the Com monwealth and where the side wall exhaust vent termination is l...

Page 5: ...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 the flanges...

Page 6: ...When lifting the furnace 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 It is acceptable to use the primary...

Page 7: ...coils are factory shipped for installation in either upflow or down flow applications with no conversion Position the coil casing over or under the furnace opening as shown in Figure 7 after configur...

Page 8: ...coil and the top of the duct Refer to Table 2 COIL FURNACE ASSEMBLY HD SERIES COILS Horizontal duct coils are referred to as HD series coils This coil must be connected using a supply duct transition...

Page 9: ...Q DGGLWLRQDO 6833 1 RPEXVWLRQ LU QOHW 5 7851 1 9HQW RQQHFWLRQ 2XWOHW 9HQW RQQHFWLRQ 2XWOHW 9HQW RQQHFWLRQ 2XWOHW Table 3 Cabinet and Duct Dimensions BTUH kW Input Nominal CFM m3 min Cabinet Size Cabin...

Page 10: ...Gas piping may be connected from either side of the furnace using any of the gas pipe entry knockouts on both sides of the furnace Refer to Figures 13 and 16 DANGER An overpressure protection device...

Page 11: ...rger 43 orifices which will bring the input rate back up to approxi mately 76 000 BTU H which is what it should be for that furnace at 6 000 feet SECTION V ELECTRICAL POWER ELECTRICAL POWER CONNECTION...

Page 12: ...iring to connect the Y and C terminals on the furnace control board to the proper wires on the con densing unit unit outside The 24 volt 40 VA transformer is sized for the furnace components only and...

Page 13: ...Full Stage Heat Clipping Jumper W914 for electric heat on thermostat is not necessary C 24 Volt Common Y Compressor SINGLE STAGE AIR CONDITIONER Y Compressor Contactor SINGLE STAGE AIR CONDITIONER C...

Page 14: ...ommon R 24 Volt Hot Y1 Single Stage Compressor MODULATING FURNACE CONTROL G Fan MODULATING FURNACE Y Y2 Second or Full Stage Compressor DHUM Dehumidification Open on Humidity Rise W Modulating Heat Mo...

Page 15: ...is not necessary C 24 Volt Common R 24 Volt Hot Y1 Single Stage Compressor MODULATING FURNACE CONTROL G Fan MODULATING FURNACE Y Y2 Second or Full Stage Compressor DHUM Dehumidification Open on Humidi...

Page 16: ...ND DEFROST CONTROL X L Malfunction Light W Auxiliary Heat SINGLE STAGE HEAT PUMP Y2 Second Stage Compressor Step 9 of Thermostat Installer Configuration Menu must be set to Pump OFF Step 1 of Thermost...

Page 17: ...sing Valve Energized in Cool C 24 Volt Common R 24 Volt Hot W1 OUT First Stage Heat W2 OUT Second Stage Heat Y2 OUT Second Stage Compressor Y1 Single Stage Compressor X L Malfunction Light Y2 Second S...

Page 18: ...Volt Hot Heat XFMR RC 24 Volt Hot Cool XFMR AUX Auxiliary Heat Step 1 of Thermostat Installer Configuration Menu must be set to HP2 Selection of GAS ELEC switch on thermostat not necessary Thermostat...

Page 19: ...the burners will stop fir ing as soon as the W signal is removed 2 Defrost Cycle When both a W signal and a Y2 signal are pres ent the modulating firing rate will operate at a constant 80 firing rate...

Page 20: ...rain and drain hose located in the loose parts bag The intake drain hose is to be installed by con necting it to the inlet pipe coupling and to the collector box as shown in Figure 25 27 and 28 The dr...

Page 21: ...ff so that no sagging loops will collect and hold condensate which will cause the furnace to not operate Shorten pressure switch hose Re route and shorten pressure switch hose Shorten rain gutter hose...

Page 22: ...tch hose to this position NOTE May require the longer hose that is provided with wider cabinets Move condensate drain hose to this position May exit either side of the cabinet Move rain gutter hose to...

Page 23: ...ch hose to this position NOTE May require the longer hose that is provided with wider cabinets Change condensate drain connection to the 90 fitting provided Move condensate drain hose to this position...

Page 24: ...tting provided Move condensate drain hose to this position Move rain gutter hose to this position Change condensate drain connection to the 90 fitting provided Move condensate drain hose to this posit...

Page 25: ...mbustion air pipe 6 All models are supplied with 2 5 1 cm vent connections When the pipe must be increased to 3 7 6 cm diameter the transition from 2 to 3 must be done as close to the furnace as possi...

Page 26: ...5 80 000 4 125 100 000 2 20 100 000 2 NA 100 000 3 80 100 000 3 60 100 000 4 145 100 000 4 125 120 000 3 80 120 000 3 60 120 000 4 145 120 000 4 125 Elevation 4001 5000 Elevation 8001 9000 Model Input...

Page 27: ...AIR VENTING FIGURE 29 Dimensions TABLE 8 Elbow Dimensions Elbow A Dimension Illustrated in Figure 29 2 Standard 2 5 16 3 Standard 3 1 16 2 Sweep 3 1 4 3 Sweep 4 1 16 TABLE 9 Equivalent Length of Fitti...

Page 28: ...ements of the gas supplier 12 30 5 cm or in accordance with local installation codes and the requirements of the gas supplier F Clearance to outside corner 12 30 5 cm or in accordance with local insta...

Page 29: ...furnace must have a separate vent pipe Under NO circumstances can the two vent pipes be tied together The combustion air side of the two pipe configuration shown in Figures 32 and 33 can be installed...

Page 30: ...entering the terminal Also the terminal assembly should be located as far as possible from a swimming pool or a location where swimming pool chemicals might be stored Be sure the terminal assembly fol...

Page 31: ...inlet opening to which it connects 4 The duct shall terminate within 12 30 5 cm above and within 24 61 cm horizontally from the burner level of the appliance having the largest input 5 A square or re...

Page 32: ...tion provides an adequate supply of air for combustion and ventilation VENT BLOWER ROTATION For ease of venting the vent blower may be rotated 90 in either direc tion For upflow installations the vent...

Page 33: ...rapid green signal indicating that the furnace is still in TEST MODE 9 When startup tests are completed turning off power to the board will take the furnace out of TEST MODE and will restore normal op...

Page 34: ...116 290 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 4...

Page 35: ...actory set to deliver an air temperature rise near the midpoint of the nameplate temperature rise range If more air is desired lower tem perature rise move the jumper to the 10 position If less air is...

Page 36: ...sample for analysis it is permissible to drill a small hole in the plastic flue pipe for a sample probe provided that the vent piping is PVC and the hole is properly sealed afterwards If using a poly...

Page 37: ...1175 1129 1077 1011 925 837 120D20 High 2701 2620 2533 2429 2338 2227 2112 1993 1861 1706 Medium High 2125 2083 2046 1994 1955 1901 1857 1737 1621 1497 Medium Low 1664 1664 1547 1619 1580 1554 1468 1...

Page 38: ...ed with a high temperature limit control mounted to the left side of the furnace vestibule panel This limit switch will open and shut off gas to the burners if it detects excessive air temperature in...

Page 39: ...th inducer pressure below pressure switch setpoint switch is closed when it should be open Check pressure switch and pressure transducer Three Red Flashes Pressure switch open with inducer pressure ab...

Page 40: ...seconds The LED will flash three green flashes when the memory has been cleared then will resume the normal slow green flash after a five second pause SECTION XI REPLACEMENT PARTS LIST DESCRIPTION MOT...

Page 41: ...ID plug missing OR not connected properly None Slow Green Rapid Green Slow Amber Rapid Amber 2 Amber 3 Amber 4 Amber 5 Amber 6 Amber Steady Red 1 Red 2 Red 3 Red 4 Red 5 Red 6 Red 7 Red 8 Red 9 Red 1...

Page 42: ...1083293 UIM D 1116 42 Johnson Controls Unitary Products NOTES...

Page 43: ...neutral Ground wire is connected Line voltage value to furnace volts AC Low voltage value between R and C on furnace control board volts AC Thermostat Type Other System Equipment and Accessories Owne...

Page 44: ...Calculated input in btuh clock the gas meter Nat Gas Only Manifold Gas Pressure in w c furnace must be in TEST mode for setup Inlet Gas Pressure in w c LP Gas Conversion Kit Part Used Burner flame in...

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