York Complete Guide for GF9S & GM9S Furnace Installation and Maintenance
Page 35

WITH BURNER BOX COVER IN PLACE

268890-UIM-B-0607

WITH BURNER BOX COVER REMOVED

TEEGAS

FITTING VALVE

BURNER BOX

PRESSURE

REFERENCE

HOSE

 

 

6

 

 

5

 

 

4

 

 

3

U-TUBE

 

2

 

1

MANOMETER

 

0

 

1

 

 

2

 

 

3

 

 

4

 

 

5

 

 

6

3.5 IN

WATER COLUMN GAS PRESSURE SHOWN

GAS VALVE

BURNER BOX

PRESSURE

REFERENCE

HOSE

 

 

6

 

 

 

 

 

5

 

 

 

 

 

 

 

 

4

 

 

3.5 IN

U-TUBE

 

3

 

 

 

2

 

 

WATER COLUMN

MANOMETER

 

1

 

 

 

0

 

 

GAS PRESSURE

 

 

1

 

 

 

 

2

 

 

SHOWN

 

 

3

 

 

 

 

4

 

 

 

 

 

5

 

 

 

 

 

6

 

 

 

 

 

 

 

 

 

FIGURE 39: Reading Gas Pressure

ADJUSTMENT OF TEMPERATURE RISE

The temperature rise, or temperature difference between the return air and the supply (heated) air from the furnace, must be within the range shown on the furnace rating plate and within the application limitations shown in Table 7 “ELECTRICAL AND PERFORMANCE DATA”.

The supply air temperature cannot exceed the “Maximum Supply Air Temperature” specified in these instructions and on the fur- nace rating plate. Under NO circumstances can the furnace be allowed to operate above the Maximum Supply Air Temperature. Operating the furnace above the Maximum Supply Air Temperature will cause premature heat exchanger failure, high levels of Carbon Monoxide, a fire hazard, personal injury, property damage, and/or death.

The temperature rise, or temperature difference between the return air and the heated supply air from the furnace, must be within the range shown on the furnace rating plate and within the application limitations as shown in Table 7.

After about 20 minutes of operation, determine the furnace temperature rise. Take readings of both the return air and the heated air in the ducts, about six feet (1.83 m) from the furnace where they will not be affected by radiant heat. Increase the blower speed to decrease the temperature rise; decrease the blower speed to increase the rise.

TWIN

FAN OFF

 

 

 

 

ADJUSTMENT

Y/Y2

180

120

60 90

JUMPER

 

DELAY

BLOWER OFF

 

 

 

 

 

W

 

 

 

 

R

 

 

 

 

G

 

 

 

 

C

 

 

 

FIGURE 40: Furnace Control Board

All direct-drive blowers have multi-speed motors. The blower motor speed taps are located in the control box in the blower compartment. Refer to Figure 40, and the unit-wiring label to change the blower speed. To use the same speed tap for heating and cooling, the heat ter- minal and cool terminal must be connected using a jumper wire and connected to the desired motor lead. Place all unused motor leads on Park terminals. Two are provided.

Do not energize more than one motor speed at a time or damage to the motor will result.

ADJUSTMENT OF FAN CONTROL SETTINGS

This furnace is equipped with a time-on/time-off heating fan control. The fan on delay is fixed at 30 seconds. The fan off delay has 4 settings (60, 90, 120 and 180 seconds). The fan off delay is factory set to 120 sec- onds. The fan-off setting 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 shown in Figure 40.

The blower speed connections shown in Figure 40 are typical. How- ever, these connections may vary from model to model and may be changed as needed to give proper heating and cooling airflow.

PARK PARK

 

YELLOW-MED. LOW

 

 

RED-LOW

 

HI COOL

BLACK-HI

 

HEAT

BLUE-MED. HI

 

 

 

EAC-H

 

 

L1

 

 

XFMR

 

NEUTRALS

 

 

HUM

Unitary Products Group

35

Page 34 Page 36
Image 35
Page 34 Page 36
Contents List of Tables Section I SafetyList of Sections List of FiguresCombustion AIR Quality List of Contaminants Specific Safety Rules and PrecautionsSafety Requirements Ance to a 50 HZ Power Supply or a Voltage Above 130 VoltsDirectly BELOW. Keep Clear of ALL OBSTRUC- Tions InspectionFurnace Location and Clearances Ductwork General Information Floor Base and Ductwork InstallationDuctwork Installation Section II DuctworkRound Duct Size InputReturn1 Rectangular2 Round2 Supply3 Horizontal Models Horizontal Installations With a Cooling Coil CabinetHorizontal Installations Without a Cooling Coil Cabinet Downflow Air Conditioning Coil CabinetCFM Filter InstallationSection III Filters Horizontal Application Attic InstallationSuspended Furnace / Crawl Space Installation Downflow FiltersSection IV GAS Piping Afue Section V Electrical PowerElectrical Power Connections Supply Voltage Connections LOW Voltage Control Wiring ConnectionsAC1 Section VI Twinning and Staging Staging Combustion AIR and Vent SafetySection VII Combustion AIR and Vent System Model Input Pipe Size Maximum Combustion AIR/VENT Pipe SizingFurnace Vent Connection Sizes Combustion AIR and Vent Piping AssemblyElbow Dimension Combustion AIR / Vent ClearancesHome Layout Vent ClearancesHorizontal Vent Applications and Termination Downflow Vent AssemblyHorizontal Vent Assembly Vent SystemOutdoor Combustion Air Vertical Vent Applications TerminationVenting Multiple Units Combustion AIR SupplyBtuh Ambient Combustion Air SupplyCombustion Air Source From Outdoors Dampers, Louvers and Grilles Canada OnlyVentilated Combustion Air Termination Vent and Supply Outside Air Safety Check ProcedureVentilated Combustion Air Condensate Drain Hose Part Numbers Section Viii Condensate PipingCondensate Drain Condensate Drain Trap and Drain Freeze ProtectionHorizontal 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 Reading the gas pressure with the burner box cover in place Adjustment of Manifold GAS PressureInlet GAS Pressure Range Nominal Manifold PressureWith Burner BOX Cover Removed Adjustment of Temperature RiseAdjustment of FAN Control Settings With Burner BOX Cover in PlaceIgnition Control Furnace Control DiagnosticsDiagnostic Fault Code Storage and Retrieval Slow Green Flash Normal operationPleated Filter PerformanceModels Airflow Range Minimum Filter Type Opening Size DisposableModel 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.
Top Page Image Contents