Allied Air Enterprises A93UH Electrical, Electrostatic Discharge ESD, Precautions and Procedures

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Electrical

ELECTROSTATIC DISCHARGE (ESD)

Precautions and Procedures

CAUTION

Electrostatic discharge can affect electronic components. Take precautions during furnace installation and service to protect the furnace’s electronic controls. Precautions will help to avoid control exposure to electrostatic discharge by putting the furnace, the control and the technician at the same electrostatic potential. Neutralize electrostatic charge by touching hand and all tools on an unpainted unit surface, such as the gas valve or blower deck, before performing any service procedure.

INTERIOR MAKE-UP BOX INSTALLATION

Figure 49

INTERIOR MAKE-UP BOX INSTALLATION

Figure 50

The unit is equipped with a field makeup box. The makeup box may be moved to the right side of the furnace to facilitate installation. Seal unused openings on left side with plugs removed from right side. Secure the excess wire to the existing harness to protect it from damage.

Refer to Figure 52 for field wiring and Figure 53 for schematic wiring diagram and troubleshooting.

The power supply wiring must meet Class I restrictions. Protected by either a fuse or circuit breaker, select circuit protection and wire size according to unit nameplate.

NOTE: Unit nameplate states maximum current draw. Maximum Over-Current Protection allowed is 15 AMP.

Holes are on both sides of the furnace cabinet to facilitate wiring.

Install a separate (properly sized) disconnect switch near the furnace so that power can be turned off for servicing.

Before connecting the thermostat check to make sure the wires will be long enough for servicing at a later date. Make sure that thermostat wire is long enough to facilitate future removal of blower for service.

Complete the wiring connections to the equipment. Use the provided unit wiring diagram and the field wiring diagram shown in Figure 52. Use 18 gauge wire or larger that is suitable for Class II rating for thermostat connections.

Electrically ground the unit according to local codes or, in the absence of local codes, according to the current National Electric Code (ANSI/HFPA No. 70) for the USA and current Canadian Electric Code Part 1 (CSA standard C22.1) for Canada. A green ground wire is provided in the field makeup box.

NOTE: The gas furnace contains electronic components that are polarity sensitive. Make sure that the furnace is wired correctly and is properly grounded.

Accessory Terminals

One line voltage “EAC” 1/4” spade terminal is provided on the furnace control board. Any accessory rated up to one amp can be connected to this terminal with the neutral leg of the circuit being connected to one of the provided neutral terminals. If an accessory rated at greater than one amp is connected to this terminal, it is necessary to use an external relay. See Figure 54 for control board configuration. This terminal is energized when the indoor blower is operating.

One line voltage “HUM” 1/4” spade terminal is provided on the furnace control board. Any humidifier rated up to one amp can be connected to this terminal with the neutral leg of the circuit being connected to one of the provided neutral

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Issue 1031

506501-01

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Contents Table of Contents A95UH, A93UH, 95G1UH & 92G1UHA95UH, A93UH, 95G1UH & 92G1UH Unit Dimensions inches mm Front View Side ViewExpanded View Shipping and Packing List Safety InformationA95UH, A93UH, 95G1UH &92G1UH Gas Furnace Building CodesInstalled in Combination with a Cooling Coil Installed LocationsUse of Furnace as a 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 Shipping Bolt Removal InstallationSetting Equipment Upflow ApplicationsReturn Air Guidlines Installation ClearancesSide Return Air With transition and filter Removing the Bottom Panel Optional Return Air Base Upflow Applications OnlyHorizontal Applications Horizontal Application Installation Clearances Suspended Installation of Horizontal UnitFilters Pipe & Fittings SpecificationsReturn Air -- Horizontal Applications Duct SystemPiping and Fittings Specifications Canadian Applications OnlyJoint Cementing Procedure Outdoor Termination Kits UsageExhaust Piping Figures 22 Horizontal Application Exhaust PipeMinimum Vent Pipe Lengths Maximum Allowable Vent Length Right Hand Discharge Shown Intake Piping Figures 24 through Typical AIR Intake Pipe Connections For Canadian Installations Only General Guidelines for Vent TerminationsFor NON-DIRECT Vent INSTALLATiONS in the USA and Canada Vent Termination ClearancesFor Direct Vent INSTALLATiONS in the USA and Canada 15F75 or 44J41 Field Supplied Wall TerminationDirect Vent Concentric Rooftop Termination Direct Vent Application Using Existing Chimney NON-DIRECT Vent Field Supplied Wall Termination NON-DIRECT Vent Application Using Existing ChimneyNON-DIRECT Vent Roof Termination KIT Condensate PipingCondensate Trap and Plug Locations Unit shown in upflow positionCondensate Trap Locations Unit shown in upflow position with remote trapLeak Check Gas PipingFire or Explosion Hazard Horizontal Applications Possible Gas Piping Configurations Carbon Monoxide Poisoning Hazard Accessory Terminals Precautions and ProceduresInterior MAKE-UP BOX Installation ElectricalIndoor Blower Speeds Typical Field Wiring DiagramFurnace & Condensing Unit Thermostat Designations Generator Use Voltage RequirementsTypical Wiring Diagram Automatic Hot Surface Ignition System Unit Start-Up Integrated ControlPlacing the furnace into operation GAS Valve Shown in on Position Manifold Pressure Measurement Gas Pressure AdjustmentSupply Pressure Measurement High Altitude InformationCarbon Monoxide Poisoning Hazard Heat FAN-OFF Time Seconds Electrical SHOCK, Fire Or Explosion Hazard Cleaning the Burner Assembly Planned Service Failure CodesControl Panel Parts Repair Parts ListCabinet Parts Heating Parts Blower PartsUnit SET UP Unit Operation BELOW. Keep Clear of ALL Obstructions Manufacturer Requirements

92G1UH, 95G1UH, A95UH, A93UH specifications

Allied Air Enterprises is renowned for producing high-quality HVAC systems, and its models A93UH, 92G1UH, A95UH, and 95G1UH are no exception. These units exemplify cutting-edge technology, efficiency, and reliability, making them popular choices for residential and commercial applications.

The A93UH model is a high-efficiency gas furnace designed with advanced features that maximize performance while maintaining low operating costs. It boasts a 93% Annual Fuel Utilization Efficiency (AFUE) rating, which ensures that a significant portion of the fuel consumed translates into heat. The A93UH incorporates variable-speed blower technology, allowing for precise airflow adjustments that enhance comfort and energy savings.

Similarly, the 92G1UH is built to provide exceptional heating capabilities. With a robust construction and innovative design, this model also achieves a 92% AFUE rating. It features a durable heat exchanger and a reliable ignition system that ensures consistent performance. The 92G1UH is engineered for quiet operation, minimizing noise levels and contributing to a more comfortable indoor environment.

Moving on to the A95UH, this unit represents the pinnacle of efficiency with its impressive 95% AFUE rating. This model not only emphasizes energy savings but also focuses on long-term durability. Equipped with a two-stage gas valve, the A95UH allows for flexible heating based on demand, which translates into enhanced comfort and efficiency. Additionally, the integrated SmartComfort technology provides homeowners with user-friendly control options.

The 95G1UH model shares many of the same advanced features as the A95UH but is tailored for different installation scenarios. With a comparable efficiency rating, the 95G1UH emphasizes ease of maintenance and installation. Its compact design and lightweight construction make it an ideal choice for various settings where space is limited.

All four models incorporate the latest in comfort control technology, allowing for seamless connectivity and programmability. Homeowners can utilize smart thermostats to optimize their heating schedules, further enhancing energy savings. The featured robust warranty and service support from Allied Air Enterprises provide peace of mind, ensuring that these units will deliver reliable performance for years to come.

Overall, the A93UH, 92G1UH, A95UH, and 95G1UH models stand out in the HVAC market due to their efficiency, innovative features, and durability. These units cater to a variety of heating needs while keeping operational costs low, making them wise investments for any property owner.
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