Johnson Controls TM9X*MP GAS Orifice Conversion for Propane LP, Manifold Pressures in. w.c

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697936-UIM-B-01211

An accessible manual shutoff valve must be installed upstream of the furnace gas controls and within 6 feet (1.8 m) of the furnace.

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 0.5 psig (3.5 kPa).

The gas valve body is a very thin casting that cannot take any exter- nal pressure. Never apply a pipe wrench to the body of the gas valve when installing piping. A wrench must be placed on the octagon hub located on the gas inlet side of the valve. Placing a wrench to the body of the gas valve will damage the valve causing improper opera- tion and/or the valve to leak.

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 Figure 13.

Table 5: Nominal Manifold Pressure - High Fire

Manifold Pressures (in. w.c.)

 

 

 

Altitude (feet)

 

 

 

0-7999

8000-8999

9000-9999

 

800

3.5

3.5

3.5

ValueHeatingGas ft.)(BTU/cu

850

3.5

3.5

3.5

1100

3.2

2.7

2.4

 

900

3.5

3.5

3.5

 

950

3.5

3.5

3.3

 

1000

3.5

3.2

2.9

 

1050

3.5

2.9

2.7

 

 

 

 

 

 

2500 (LP)

9.8

8.2

7.5

GAS ORIFICE CONVERSION FOR PROPANE (LP)

This furnace is constructed at the factory for natural gas-fired operation, but may be converted to operate on propane (LP) gas by using a fac- tory-supplied LP conversion kit. Follow the instructions supplied with the LP kit.

HIGH ALTITUDE GAS ORIFICE CONVERSION

This furnace is constructed at the factory for natural gas-fired operation at 0 –7,999 feet (0 – 2,438 m) above sea level.

The manifold pressure must be changed in order to maintain proper and safe operation when the furnace is installed in a location where the altitude is greater than 7,999 feet (2,438 m) above sea level. Refer to Table 5 for proper manifold pressure settings.

HIGH ALTITUDE PRESSURE SWITCH CONVERSION

For installation where the altitude is less than 5,000 feet (1,524m), it is not required that the pressure switch be changed unless you are in an area subject to low pressure inversions.

Manifold Pressures (kPa)

 

 

 

 

Altitude (m)

 

 

 

 

0-2437

2438-2742

2743-3048

 

 

29.8

0.87

0.87

0.87

HeatingValue

 

31.7

0.87

0.87

0.87

(MJ/cum)

33.5

0.87

0.87

0.87

35.4

0.87

0.87

0.81

 

 

37.3

0.87

0.80

0.73

Gas

 

39.1

0.87

0.73

0.67

 

41.0

0.80

0.66

0.61

 

 

93.2 (LP)

2.44

2.03

1.86

DANGER

PROPANE AND HIGH ALTITUDE CONVERSION KITS

It is very important to choose the correct kit and/or gas orifices for the altitude and the type of gas for which the furnace is being installed.

Only use natural gas in furnaces designed for natural gas. Only use propane (LP) gas for furnaces that have been properly converted to use pro- pane (LP) gas. Do not use this furnace with butane gas.

Incorrect gas orifices or a furnace that has been improperly converted will create an extremely dangerous condition resulting in premature heat exchanger failure, excessive sooting, high levels of carbon monoxide, personal injury, property damage, a fire hazard and/or death.

High altitude and propane (LP) conversions are required in order for the appliance to satisfactory meet the application. An authorized distributor or dealer must make all gas conversions.

In Canada, a certified conversion station or other qualified agency, using factory specified and/or approved parts, must perform the conversion. The installer must take every precaution to insure that the furnace has been converted to the proper gas orifice size when the furnace is installed. 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 Unitary Products

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Contents Combustion AIR and Vent System List of SectionsList of Figures List of TablesSafety Requirements Section I SafetySpecific Safety Rules and Precautions Codes and Standards Combustion AIR Quality List of ContaminantsFurnace Location and Clearances InspectionDuct Flanges Floor Base and Ductwork Installation DownflowSection II Ductwork Ductwork General InformationCoil Flange Installation Coil InstallationCOIL/FURNACE Assembly MC/FC/PC Series Coils Furnace Assembly MC & FC Series CoilsCritical Coil Projection Coil / Furnace Assembly HC Series CoilsDownflow Duct Connectors Bottom Return and Attic InstallationsDownflow Application Horizontal ApplicationBtuh kW Filter InstallationCabinet Dimensions Inches Section III FiltersSide Return GAS SafetyGAS Piping Installation Section IV GAS PipingManifold Pressures in. w.c High Altitude Pressure Switch ConversionGAS Orifice Conversion for Propane LP High Altitude GAS Orifice ConversionSupply Voltage Connections Section V Electrical PowerElectrical Power Connections LOW Voltage Control Wiring ConnectionsSingle Stage Air Conditioner Single Stage Furnace Single Stage Heat Pump Single Stage Furnace Twinning Accessory ConnectionsElectronic AIR Cleaner Connection Humidifier ConnectionCondensate Drain Termination Will cause the furnace Johnson Controls Downflow ConfigurationHorizontal Left ConfigurationHorizontal Right Inducer Rotated Model Input Pipe Size Maximum Combustion AIR and Vent SafetySection VII Combustion AIR and Vent System Combustion AIR/VENT Pipe SizingFitting Equivalent Length Combustion AIR and Vent Piping AssemblyElbow a Dimension Combustion AIR / VentingHome Layout Vent ClearancesVenting Multiple Units Vent SystemVent Applications and Termination Ambient Combustion Air Supply Downward VentingOutdoor Combustion Air Combustion AIR SupplyFree Area Combustion Air Source From OutdoorsDampers, Louvers and Grilles Canada Only Ventilated Combustion Air Termination Air Supply Openings and DuctsVentilated Combustion Air Vent Blower Rotation Section Viii START-UP AdjustmentsSpecially Engineered Installations Calculating the Furnace Input NAT. GAS GAS Piping Leak CheckIgnition System Sequence Revolution Revolution Cu FtSeconds For Read the manifold gas pressure Adjustment of Manifold GAS Pressure & Input RateRead the inlet gas pressure Adjustment of FAN Control Settings Adjustment of Temperature RiseControl Circuit Fuse Section IX Safety ControlsBlower Door Safety Switch Rollout Switch ControlsSection X Normal Operation and Diagnostics Diagnostic Fault Code Storage and Retrieval Fabricated Parts Section XI Replacement Parts ListReplacement Part Contact Information Section XII Wiring Diagram Wiring FurnaceJohnson Controls Unitary Products York Drive Norman, OK

TM9X*MP specifications

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