York GF9S*DH Downflow Filters, Horizontal Application, Horizontal Filters, Attic Installation

Page 8

268890-UIM-B-0607

Downflow Filters

Downflow furnaces typically are installed with the filters located above the furnace, extending into the return air plenum or duct. Any branch duct (rectangular or round duct) attached to the plenum must attach to the vertical plenum above the filter height.

Filters(s) may be located in the duct system external to the furnace using an external duct filter box attached to the furnace plenum or at the end of the duct in a return filter grille(s). The use of straps and / or sup- ports is required to support the weight of the external filter box.

If the accessory electronic air cleaner is installed, be sure the air cleaner is designed to accommodate the furnace CFM (cm/m) and the air cleaner is installed so it does not obstruct the return airflow. Consid- eration should be given when locating the air cleaner for maintenance

HORIZONTAL APPLICATION

Horizontal Filters

All filters and mounting provision must be field supplied. Filters(s) may be located in the duct system external to the furnace or in a return filter grille(s). Filters(s) may be located in the duct system using an external duct filter box attached to the furnace plenum. Any branch duct (rectan- gular or round duct) attached to the plenum must attach to the vertical plenum above the filter height. The use of straps and / or supports is required to support the weight of the external filter box.

An accessory filter rack is available.

ATTIC INSTALLATION

and temperatures should the indoor fan motor fail to operate. The use of straps and / or supports is required to support the weight of the elec- tronic air cleaner. It is recommended that the air cleaner not be located within 12 inches (30.5 cm) from the top of the return air opening on the furnace. Refer to the instructions supplied with the electronic air cleaner.

All loose accessories shipped with the furnace must be removed from the blower compartment, prior to installation.

If pleated media air filters or any filter that has a large pressure drop is installed in the return air duct system be sure that the pressure drop caused by the air filter will not prevent the furnace from operating within the rise range specified on the rating plate. If the furnace does not oper-

LINE CONTACT ONLY PERMISSIBLE BETWEEN LINES FORMED BY THE INTERSECTION OF FURNACE TOP AND TWO SIDES AND BUILDING JOISTS, STUDS OR FRAMING

GAS

PIPING

SUPPLY

AIR

12” CLEARANCE FOR SERVICE

COMBUSTION AIR

30” MIN.

WORK AREA

FILTER RACK

RETURN

AIR

VENT PIPE (maintain required clearances to combustible)

ate within the specified rise range then a larger air filter or an air filter that has a lower pressure drop must be installed.

IMPORTANT: For easier filter access in a downflow configuration, a removable access panel is recommended in the vertical run of the return air plenum immediately above the furnace.

 

CLOSET

COMBUSTION

RETURN

AIR

AIR

VENT

AIR

PIPE

FILTERS

ELECTRICAL

SUPPLY

GAS SUPPLY (EITHER SIDE)

FIGURE 4: Return Filter Grill and Return Duct Installation

FIGURE 5: Typical Attic Installation

This appliance is design certified for line contact when the furnace is installed in the horizontal left or right position. The line contact is only permissible between lines are formed by the intersection of the top and two sides of the furnace and the building joists, studs or framing. This line may be in contact with combustible material.

IMPORTANT: In either a horizontal left or right installation, a minimum of 8" (20.3 cm) clearance is required beneath the furnace to allow for the installation of the condensate trap and drain pipe. Refer to "CON- DENSATE PIPING" section of this manual for more information.

When a furnace is installed in an attic or other insulated space, keep all insulating materials at least 12 inches (30.5 cm) away from furnace and burner combustion air openings.

If this furnace is installed over a finished space, a condensate safety pan must be installed.

IMPORTANT: Air velocity through throwaway type filters must not exceed 300 feet per minute (91 m/min). All velocities over this require the use of high velocity filters. Refer to Table 19.

All installations must have a filter installed.

SUSPENDED FURNACE / CRAWL SPACE INSTALLATION

The furnace can be hung from floor hoists or installed on suitable blocks or pad. Blocks or pad installations shall provide adequate height to ensure the unit will not be subject to water damage. Units may also be suspended from rafters or floor joists using rods, pipe angle supports or straps. Angle supports should be placed at the supply air end and near the blower deck. Do not support at return air end of unit. All four sus- pension points must be level to ensure quite furnace operation. When suspending the furnace use a secure a platform constructed of plywood or other building material secured to the floor joists. Refer to Figure 6 for typical crawl space installation.

8

Unitary Products Group

Page 7 Page 9
Image 8
Page 7 Page 9
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.
Top Page Image Contents