York GF9S*DH, GM9S*DH, GY9S*DH Ignition System Sequence, Calculating the Furnace Input Natural GAS

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268890-UIM-B-0607

There is an accessory kit (1PK0601) available from Source 1, which has the following items:

•1 - 12” (30 cm) length x 1/8” (0.3 cm) diameter tubing

•2 – pieces of 4” (10 cm) length x 1/8” (0.3 cm) diameter tubing

•1 - 5/16” (0.8 cm) tee

•1 – 5/16” (0.8 cm) x 1/8” (3.175 mm) reducing coupling

•1 – 1/8” (0.3 cm) adapter

There is a accessory kit (1PK0602) available from Source 1, which has the following items:

•12” (30 cm) length x 1/8” (0.3 cm) diameter tubing

•2 – pieces of 4” (10 cm) length x 1/8” (0.3 cm) diameter tubing

•1 - 5/16” (0.8 cm) tee

•1 – 5/16” (0.8 cm) x 1/8” (0.3 cm) reducing coupling

•1 – 1/8” (0.3 cm) adapter

•1 - Dwyer – Manometer

These items are required in order to properly perform the required star- tup procedure.

IGNITION SYSTEM SEQUENCE

1.Turn the gas supply ON at external valve and main gas valve.

2.Set the thermostat above room temperature to call for heat.

3.System start-up will occur as follows:

a.The induced draft blower motor will start and come up to speed. Shortly after inducer start-up, the hot surface igniter will glow for about 17 seconds.

b.After this warm up, the ignition module will energize (open) the main gas valve.

c.After flame is established, the supply air blower will start in about 30 seconds.

IMPORTANT: Burner ignition may not be satisfactory on first startup due to residual air in the gas line or until gas manifold pressure is adjusted. The ignition control will make 3 attempts to light before lock- ing out.

With furnace in operation, check all of the pipe joints, gas valve connec- tions and manual valve connections for leakage using an approved gas detector, a non-corrosive leak detection fluid, or other leak detection methods. Take appropriate steps to stop any leak. If a leak persists, replace the component.

The furnace and its equipment shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 PSI (3.45 kPa).

The furnace must be isolated from the gas supply piping system by closing the equipment shutoff valve during any pressure testing of the gas supply piping system.

CALCULATING THE FURNACE INPUT (NATURAL GAS)

NOTE: Burner orifices are sized to provide proper input rate using natu- ral gas with a heating value of 1030 BTU/Ft3 (38.4 MJ/m3). If the heat- ing value of your gas is significantly different, it may be necessary to replace the orifices.

NOTE: Front door of burner box must be secured when checking gas input.

1.Turn off all other gas appliances connected to the gas meter.

2.At the gas meter, measure the time (with a stop watch) it takes to use 2 cubic ft. (0.0566 m3.) of gas.

3.Calculate the furnace input by using one of the following equa- tions.

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 the detection of leaks to check all connections. A fire or explosion may result causing property damage, personal injury or loss of life.

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Unitary Products Group

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Contents Section I Safety List of SectionsList of Figures List of TablesSpecific Safety Rules and Precautions Safety RequirementsAnce to a 50 HZ Power Supply or a Voltage Above 130 Volts Combustion AIR Quality List of ContaminantsDirectly BELOW. Keep Clear of ALL OBSTRUC- Tions InspectionFurnace Location and Clearances Floor Base and Ductwork Installation Ductwork InstallationSection II Ductwork Ductwork General InformationRound Duct Size InputReturn1 Rectangular2 Round2 Supply3 Horizontal Installations With a Cooling Coil Cabinet Horizontal Installations Without a Cooling Coil CabinetDownflow Air Conditioning Coil Cabinet Horizontal ModelsCFM Filter InstallationSection III Filters Attic Installation Suspended Furnace / Crawl Space InstallationDownflow Filters Horizontal ApplicationSection IV GAS Piping Afue Section V Electrical PowerElectrical Power Connections LOW Voltage Control Wiring Connections Supply Voltage ConnectionsAC1 Section VI Twinning and Staging Staging Combustion AIR and Vent SafetySection VII Combustion AIR and Vent System Combustion AIR/VENT Pipe Sizing Model Input Pipe Size MaximumCombustion AIR and Vent Piping Assembly Elbow DimensionCombustion AIR / Vent Clearances Furnace Vent Connection SizesVent Clearances Home LayoutDownflow Vent Assembly Horizontal Vent AssemblyVent System Horizontal Vent Applications and TerminationVertical Vent Applications Termination Venting Multiple UnitsCombustion AIR Supply Outdoor Combustion AirAmbient Combustion Air Supply Combustion Air Source From OutdoorsDampers, Louvers and Grilles Canada Only BtuhVentilated Combustion Air Termination Vent and Supply Outside Air Safety Check ProcedureVentilated Combustion Air Section Viii Condensate Piping Condensate DrainCondensate Drain Trap and Drain Freeze Protection Condensate Drain Hose Part NumbersHose #5 Hose #1 Horizontal Left Air Flow Inducer Low Refer to Figures 31Hose #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 IX Safety Controls Section X START-UP AdjustmentsIgnition System Sequence Calculating the Furnace Input Natural GASUSA use the following formula to calculate the furnace input Adjustment of Manifold GAS Pressure Inlet GAS Pressure RangeNominal Manifold Pressure Reading the gas pressure with the burner box cover in placeAdjustment of Temperature Rise Adjustment of FAN Control SettingsWith Burner BOX Cover in Place With Burner BOX Cover RemovedFurnace Control Diagnostics Diagnostic Fault Code Storage and RetrievalSlow Green Flash Normal operation Ignition ControlFilter Performance ModelsAirflow Range Minimum Filter Type Opening Size Disposable PleatedModel no Description Used with Field Installed Accessories NON-ELECTRICALApplying Filter Pressure Drop to Determine System Airflow 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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