York GM9S*DH, GY9S*DH, GF9S*DH USA use the following formula to calculate the furnace input

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268890-UIM-B-0607

In the USA use the following formula to calculate the furnace input.

For natural gas multiply the heat content of the gas BTU/SCF or Default 1030 BTU/SCF (38.4 MJ/m3), times 2 cubic ft. (0.056 m) of gas measured at the gas meter, times a barometric pressure and temperature correction factor of 0.960; times 3600, then divided by the time (In seconds) it took to measure 2 cubic ft. (0.056 m) of gas from the gas meter.

For propane (LP) gas multiply the heat content of the gas BTU/SCF or Default 2500 BTU/SCF (93.15 MJ/m3), times 1 cubic ft. (0.028 m) of gas mea- sured at the gas meter, times a barometric pressure and temperature correction factor of 0.960; times 3600, then divided by the time (In seconds) it took to measure 1 cubic ft. (0.028 m) of gas from the gas meter.

The formula for US input calculation using a cubic foot gas meter:

BTU/ft3 x 2 cu.ft. x 0.960 x 3600

=

BTU/H

BTU/ft3 x 1 cu.ft. x 0.960 x 3600

 

=

BTU/H

Seconds it took to measure the 2 cu.ft. of gas

Seconds it took to measure the 1 cu.ft. of gas

 

 

 

 

NATURAL GAS INPUT CALCULATION

 

 

PROPANE (LP) GAS INPUT CALCULATION

 

 

EXAMPLE:

 

 

EXAMPLE:

 

 

1030 x 2 x 0.960 x 3600

=

78,666.90

2500 x 1 x 0.960 x 3600

=

80,000.00

90.5

108

 

 

 

 

 

 

Natural Gas

 

 

Propane Gas

 

 

1030 BTU/SCF

 

 

2500 BTU/SCF

 

 

In Canada you will use the following formula to calculate the furnace input if you are using a cubic foot gas meter.

For Natural Gas multiply the Heat content of the gas MJ/m3 (or Default 38.4), times 2 cubic ft. of gas x 0.028 to convert from cubic feet to cubic meters measured at the gas meter, times a barometric pressure and temperature correction factor of 0.960; times 3600, then divided by the time it took to measure 2 cubic ft. (0.056 m) of gas from the gas meter.

For Propane (LP) Gas multiply the Heat content of the gas MJ/m3 (or Default 93.15), times 1 cu. ft. of gas x 0.028 to convert from cubic feet to cubic meters measured at the gas meter, times a barometric pressure and temperature correction factor of 0.960; times 3600, then divided by the time it took to measure 1 cubic ft. (0.028 m) of gas from the gas meter.

The formula for metric input calculation using a cubic foot gas meter:

MJ/m3 x 2 cu.ft. x 0.028 x 0.960 x 3600

 

=

MJ/H

x

0.2777

=

kW

x

3412.14

=

BTU/H

Seconds it took to measure the 2 cu.ft. of gas

 

 

 

 

 

 

 

 

 

 

NATURAL GAS INPUT CALCULATION

 

 

 

 

 

 

 

 

 

 

EXAMPLE:

 

 

 

 

 

 

 

 

 

 

38.4 x 2 x 0.028 x 0.960 x 3600

=

82.12

x

0.2777

=

22.80

x

3412.14

=

77,796.80

90.5

 

 

 

 

 

 

 

 

 

 

 

 

Natural Gas

 

 

 

 

 

 

 

 

 

 

1030 BTU/SCF = 38.4 MJ/m3

 

 

 

 

 

 

 

 

 

 

PROPANE (LP) GAS INPUT CALCULATION

 

 

 

 

 

 

 

 

 

 

EXAMPLE:

 

 

 

 

 

 

 

 

 

 

93.15 x 1 x 0.028 x 0.960 x 3600

=

83.46

x

0.2777

=

23.18

x

3412.14

=

79,093.4

108

 

 

 

 

 

 

 

 

 

 

 

 

Propane Gas

2500 BTU/SCF = 93.15 MJ/m3

In Canada use the following formula to calculate the furnace input if you are using a gas meter that measures cubic meters.

For Natural Gas multiply the Heat content of the gas MJ/m3 (or Default 38.4), times 0.10 m3 of gas measured at the gas meter, times a barometric pressure and temperature correction factor of 0.960; times 3600, then divided by the time it took to measure 0.10 m3 of gas from the gas meter.

For Propane (LP) Gas multiply the Heat content of the gas MJ/m3 (or Default 93.15), times 0.10 m3 of gas measured at the gas meter, times a baro- metric pressure and temperature correction factor of 0.960; times 3600, then divided by the time it took to measure 0.10 m3 of gas from the gas meter.

The formula for metric input calculation using a cubic meter gas meter:

MJ/m3 x m3 x 0.960 x 3600

=

MJ/H

x

0.2777

=

kW

x

3412.14

=

BTU/H

Seconds it took to measure the 0.10 m3 of gas

 

 

 

 

 

 

 

 

 

 

NATURAL GAS INPUT CALCULATION

 

 

 

 

 

 

 

 

 

 

EXAMPLE:

 

 

 

 

 

 

 

 

 

 

38.4 x 0.1 x 0.960 x 3600

=

82.94

x

0.2777

=

23.03

x

3412.14

=

78,581.60

160

 

 

 

 

 

 

 

 

 

 

Natural Gas

 

 

 

 

 

 

 

 

 

 

1030 BTU/SCF = 38.4 MJ/m3

 

 

 

 

 

 

 

 

 

 

PROPANE (LP) GAS INPUT CALCULATION

 

 

 

 

 

 

 

 

 

 

EXAMPLE:

 

 

 

 

 

 

 

 

 

 

93.15 x 0.1 x 0.960 x 3600

=

83.19

x

0.2777

=

23.10

x

3412.14

=

78,826.3

387

 

 

 

 

 

 

 

 

 

 

Propane Gas

2500 BTU/SCF = 93.15 MJ/m3

DO NOT ADJUST the manifold pressure regulator if the actual input is equal to or within 8% less than the furnace input specified on the rating plate or if the furnace rise is above the specified rise range on the rating plate.

If the actual input is significantly higher than the furnace input specified on the rating plate then replace the gas orifices with the gas orifices of the proper size for the type of gas you are using.

Unitary Products Group

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Contents List of Sections Section I SafetyList of Figures List of TablesSafety Requirements Specific Safety Rules and PrecautionsAnce to a 50 HZ Power Supply or a Voltage Above 130 Volts Combustion AIR Quality List of ContaminantsInspection Furnace Location and ClearancesDirectly BELOW. Keep Clear of ALL OBSTRUC- Tions Ductwork Installation Floor Base and Ductwork InstallationSection II Ductwork Ductwork General InformationInput Return1 Rectangular2 Round2 Supply3Round Duct Size Horizontal Installations Without a Cooling Coil Cabinet Horizontal Installations With a Cooling Coil CabinetDownflow Air Conditioning Coil Cabinet Horizontal ModelsFilter Installation Section III FiltersCFM Suspended Furnace / Crawl Space Installation Attic InstallationDownflow Filters Horizontal ApplicationSection IV GAS Piping Section V Electrical Power Electrical Power ConnectionsAfue Supply Voltage Connections LOW Voltage Control Wiring ConnectionsAC1 Section VI Twinning and Staging Combustion AIR and Vent Safety Section VII Combustion AIR and Vent SystemStaging Model Input Pipe Size Maximum Combustion AIR/VENT Pipe SizingElbow Dimension Combustion AIR and Vent Piping AssemblyCombustion AIR / Vent Clearances Furnace Vent Connection SizesHome Layout Vent ClearancesHorizontal Vent Assembly Downflow Vent AssemblyVent System Horizontal Vent Applications and TerminationVenting Multiple Units Vertical Vent Applications TerminationCombustion AIR Supply Outdoor Combustion AirCombustion Air Source From Outdoors Ambient Combustion Air SupplyDampers, Louvers and Grilles Canada Only BtuhVent and Supply Outside Air Safety Check Procedure Ventilated Combustion AirVentilated Combustion Air Termination Condensate Drain Section Viii Condensate PipingCondensate Drain Trap and Drain Freeze Protection Condensate Drain Hose Part NumbersHorizontal Left Air Flow Inducer Low Refer to Figures 31 Hose #5 Hose #1Hose #9 Hose #4 Hose #6 Horizontal Right Air Flow Inducer High Refer to Figures Unitary Products Group HOSE#1 Hose #2 Barbed TEE Hose #4 Hose #7 Hose #9 Section X START-UP Adjustments Section IX Safety ControlsCalculating the Furnace Input Natural GAS Ignition System SequenceUSA use the following formula to calculate the furnace input Inlet GAS Pressure Range Adjustment of Manifold GAS PressureNominal Manifold Pressure Reading the gas pressure with the burner box cover in placeAdjustment of FAN Control Settings Adjustment of Temperature RiseWith Burner BOX Cover in Place With Burner BOX Cover RemovedDiagnostic Fault Code Storage and Retrieval Furnace Control DiagnosticsSlow Green Flash Normal operation Ignition ControlModels Filter PerformanceAirflow Range Minimum Filter Type Opening Size Disposable PleatedField Installed Accessories NON-ELECTRICAL Applying Filter Pressure Drop to Determine System AirflowModel no Description Used with Section XI Wiring Diagram Unitary 5005 Norman Product York Group Drive 73069

GF9S*DH, GY9S*DH, GM9S*DH specifications

The York GM9S*DH, GF9S*DH, and GY9S*DH series air conditioning systems are known for their robust performance, reliability, and energy efficiency. These models are well-suited for both residential and light commercial applications, making them versatile options for a range of users.

One of the standout features of these systems is their high efficiency. The GM9S*DH is equipped with advanced heating and cooling technologies that allow it to achieve excellent SEER (Seasonal Energy Efficiency Ratio) ratings. This translates to lower energy consumption and reduced utility bills for homeowners and business operators alike. The GF9S*DH model further enhances this efficiency by incorporating variable-speed blowers that adjust airflow based on specific needs, ensuring that the system operates only as necessary.

Reliability is another key characteristic of the York GM9S*DH, GF9S*DH, and GY9S*DH series. These models are engineered with durable components and rigorous performance testing, which contributes to their long lifespan and minimizes the need for repairs. Moreover, they come with robust warranties that provide peace of mind for consumers.

In terms of technology, these units utilize a smart thermostat feature that allows for precise temperature control and programmable settings. This feature not only enhances comfort but also contributes to energy savings by allowing users to set optimal cooling or heating schedules. The systems are also designed with quiet operation in mind, employing sound-dampening features that minimize noise levels, which is particularly beneficial for residential installations.

The installation of the York GM9S*DH, GF9S*DH, and GY9S*DH systems is straightforward, offering flexibility in placement and integration with various home or office setups. Their compact design allows them to fit seamlessly into different environments without compromising on performance.

Additionally, the systems are equipped with advanced filtration options that improve indoor air quality by capturing allergens and pollutants. This is particularly beneficial for families with children or members who suffer from allergies.

Overall, the York GM9S*DH, GF9S*DH, and GY9S*DH series provide exceptional performance, energy efficiency, and reliability, making them an ideal choice for maintaining a comfortable indoor environment. With their cutting-edge technologies and user-friendly features, these systems represent an excellent investment for anyone looking to enhance their heating and cooling experience.
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