Allied Air Enterprises A93DF, A95DF, 92G1DF Intake Piping, Typical AIR Intake Pipe Connections

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Intake Piping

This furnace may be installed in either direct vent or non- direct vent applications. In non-direct vent applications, when intake air will be drawn into the furnace from the surrounding space, the indoor air quality must be considered. Guidelines listed in Combustion, Dilution and Ventilation Air section must be followed.

Follow the next two steps when installing the unit in Direct Vent applications, where combustion air is taken from outdoors and flue gases are discharged outdoors. The provided air intake screen must not be used in direct vent applications (outdoors).

1.Use cement or a sheet metal screw to secure the intake pipe to the inlet air connector.

2.Route piping to outside of structure. Continue with installation following instructions given in general guide lines for piping terminations and intake and exhaust piping terminations for direct vent sections. Refer to Table 7 for pipe sizes.

TYPICAL AIR INTAKE PIPE CONNECTIONS

NON−DIRECT VENT APPLICATIONS

AIR

INTAKE SCREEN (Provided)

NOTE: Air intake screen and elbow may be rotated, so that screen may be positioned to face forward or to either side.

FIGURE 22

Follow the next two steps when installing the unit in Non-Direct Vent applications where combustion air is taken from indoors and flue gases are discharged outdoors.

1.Use field-provided materials and the factory-provided air intake screen to route the intake piping as shown in Figure 23. Maintain a minimum clearance of 3" (76 mm) around the air intake opening. The air intake opening (with the protective screen) should always be directed forward, or sideways.

2.Use a sheet metal screw to secure the intake pipe to the connector, if desired.

General Guidelines for Vent Terminations

In Non-Direct Vent applications, combustion air is taken from indoors and the flue gases are discharged to the outdoors. This unit is then classified as a non-direct vent, Category IV gas furnace.

In Direct Vent applications, combustion air is taken from outdoors and the flue gases are discharged to the outdoors. This unit is then classified as a direct vent, Category IV gas furnace.

In both Non-Direct Vent and Direct Vent applications, the vent termination is limited by local building codes. In the absence of local codes, refer to the current National Fuel Gas Code ANSI Z223-1/NFPA 54 in U.S.A., and current CSA- B149 Natural Gas and Propane Installation Codes in Canada for details.

Position termination according to location given in Figure 23 or 24. In addition, position termination so it is free from any obstructions and 12" above the average snow accumulation. At vent termination, care must be taken to maintain protective coatings over building materials (prolonged exposure to exhaust condensate can destroy protective coatings). It is recommended that the exhaust outlet not be located within 6 feet (1.8 m) of a condensing unit because the condensate can damage the painted coating.

NOTE: If winter design temperature is below 32° F (0° C), it is recommended that the exhaust piping be insulated with 1/2" (13 mm), Armaflex or equivalent when run through an unconditioned area. In extremely cold climate areas with temperature below 20° F (6.7° C) it is recommended that 3/4" (19 mm) Armaflex or equivalent be used. Insulation on outside runs of exhaust pipe may be painted or wrapped to protect insulation from deterioration in accordance with the insulation manufacturers recommendation. Exhaust pipe insulation may not be necessary in some specific applications.

NOTE: During extremely cold temperatures, below approximately 20° F (6° C), units with long runs of vent pipe through unconditioned space, even when insulated, may form ice in the exhaust termination that prevents the unit from operating properly. Longer run times of at least 5 minutes will alleviate most icing problems. Also, a heating cable may be installed on exhaust piping and termination to prevent freeze-ups. Heating cable installation kits are available, see unit specification sheets for part numbers.

IMPORTANT

Do not use screens or perforated metal in exhaust terminations. Doing so will cause freeze-ups and may block the terminations.

IMPORTANT

For Canadian Installations Only:

In accordance to CSA International B149 installation codes, the minimum allowed distance between the combustion air intake inlet and the exhaust outlet of other appliances shall not be less than 12 inches (305 mm).

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Issue 1109

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Contents Table of Contents A95DF, A93DF, 95G1DF & 92G1DFTOP View Front View Side ViewParts Arrangement Shipping and Packing List Package 1 of 1 contains Safety InformationGas Furnace Building CodesInstalled in Combination with a Cooling Coil Locations and ClearancesUse of Furnace as Construction Heater Product Contains Fiberglass Wool Combustion, Dilution & Ventilation AirAir from Inside Unconfined SpaceConfined Space Equipment in Confined Space − ALL AIR from InsideAir from Outside Equipment in Confined Space − ALL AIR from OutsideInstallation Setting Equipment Shipping Bolt RemovalUnits with 1/2 HP Blower Motor Installation on Non-Combustible Flooring Figure Installation on Combustible Flooring FigureNON−COMBUSTIBLE Floor Opening Size Installation on Cooling Coil Cabinet Figure Combustible Flooring Base Opening SizeReturn Air Opening Downflow Units Piping and Fittings Specifications Canadian Applications Only Outdoor Termination Kits UsageStandard Concentric Joint Cementing Procedure Venting Practices Piping Suspension GuidelinesReplacing Furnace That WAS Part of a Common Vent System MIN. Vent Length Exhaust Piping FigureMinimum Vent Pipe Lengths ModelsA95DF / 95G1DF and A93DF / 92G1DF Typical Exhaust Pipe Connections Typical Intake Pipe Connections Direct Vent ApplicationsTypical AIR Intake Pipe Connections For Canadian Installations OnlyIntake Piping General Guidelines for Vent TerminationsInside Corner Detail No minimum to outside corner Exhaust Pipe Termination Size Reduction Direct Vent Roof Termination KITModel 51mm 76mm Direct Vent Application Using Existing Chimney Direct Vent Concentric Rooftop TerminationDirect Vent Concentric Wall Termination NON−DIRECT Vent Roof Termination KIT NON−DIRECT Vent Application Using Existing ChimneyNON−DIRECT Vent Field Supplied Wall Termination Extended NON−DIRECT Vent Field Supplied Wall TerminationCondensate Piping Unit with Evaporator CoilTrap / Drain Assembly Using 1/2 PVC or 3/4 PVC Gas Piping Leak CheckFire or Explosion Hazard GAS Pipe Capacity − FT 3 /HR kL/HR Removal of the Furnace from Common Vent Carbon Monoxide Poisoning HazardElectrical Precautions and ProceduresAccessory Terminals Electrostatic Discharge ESDIndoor Blower Speeds Generator Use Voltage RequirementsTypical Wiring Diagram Unit Start-Up Integrated ControlAutomatic Hot Surface Ignition System Placing the furnace into operationTurning Off Gas to Unit Priming Condensate TrapGas Valve Operation Figure Failure To OperateGAS Meter Clocking Chart Burner Orifice Conversion Kits at Varying Altitudes Carbon Monoxide Poisoning Hazard Temperature Rise Flame Rollout Switches TwoPressure Switch Primary LimitBlower Data A93DF1D / 92G1DF Blower Data A95DF1D / 95G1DF Electrical SHOCK, Fire Or Explosion Hazard Cleaning the Burner Assembly Planned Service Diagnostic CodesControl Panel Parts Repair Parts ListCabinet Parts Heating Parts Blower PartsDuct System Supply AIR Duct GAS SupplyIntake / Exhaust Pipe Return DuctUnit Operation Clear of ALL Obstructions Manufacturer Requirements

A95DF, 95G1DF, A93DF, 92G1DF specifications

Allied Air Enterprises offers a range of high-efficiency commercial and residential heating and cooling systems, with models like the 92G1DF, A93DF, 95G1DF, and A95DF gaining popularity for their cutting-edge technology and advanced features. Each of these models stands out in performance, reliability, and energy efficiency, making them excellent choices for diverse applications.

The 92G1DF model features a multi-stage gas valve that enhances temperature regulation, allowing for more precise heating. With an impressive Annual Fuel Utilization Efficiency (AFUE) rating, this furnace efficiently utilizes fuel, resulting in lower energy costs and reduced emissions. Its compact design makes it suitable for installations in tight spaces, while the durable heat exchanger extends the unit’s lifespan.

In contrast, the A93DF is engineered for enhanced comfort and flexibility. This model incorporates a variable-speed blower motor, which adjusts air circulation according to the heating demands in the space. This feature not only maximizes comfort by providing consistent temperatures but also promotes energy savings by reducing unnecessary power consumption. Additionally, the A93DF includes advanced diagnostic capabilities that simplify troubleshooting and maintenance, making it a favorite among HVAC professionals.

The 95G1DF is another noteworthy model that combines versatile performance with exceptional efficiency. This furnace boasts an AFUE rating of up to 95%, making it one of the most efficient models in its class. Its innovative design includes a secondary heat exchanger that captures additional heat from exhaust gases, optimizing energy utilization. Furthermore, the 95G1DF is equipped with an advanced control system that allows homeowners to set specific comfort levels.

Lastly, the A95DF model takes efficiency to a new level. With features such as a modulating gas valve and a variable-speed blower, this unit seamlessly adapts to changing heating needs. The A95DF not only heats a space but also enhances air quality through advanced filtration options. Its whisper-quiet operation adds to user satisfaction, making it ideal for residential settings.

In summary, Allied Air Enterprises' models 92G1DF, A93DF, 95G1DF, and A95DF demonstrate a commitment to innovation and energy efficiency, with features designed to provide superior comfort and reliability. With their advanced technologies and high-performance characteristics, these models are positioned as top contenders in the heating and cooling marketplace, ensuring that customers can enjoy a comfortable environment year-round.
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