Allied Air Enterprises 95G1UH, A95UH, A93UH, 92G1UH Heat FAN-OFF Time Seconds

Page 41

Other Unit Adjustments

Primary Limit

The primary limit is located on the heating compartment vestibule panel. This limit is factory set and requires no adjustment.

Flame Rollout Switches (Two)

These manually reset switches are located on the front of the burner box.

Pressure Switch

The pressure switch is located in the heating compartment on the cold end header box. This switch checks for proper combustion air inducer operation before allowing ignition trial. The switch is factory set and must not be adjusted.

Temperature Rise

After the furnace has been started and supply and return air temperatures have been allowed to stabilize, check the temperature rise. If necessary, adjust the blower speed to maintain the temperature rise within the range shown on the unit nameplate. Increase the blower speed to decrease the temperature. Decrease the blower speed to increase the temperature rise. Failure to adjust the temperature rise may cause erratic limit operation.

Fan Control

The fan ON time of 30 seconds is not adjustable. The fan OFF delay (amount of time that the blower operates after the heat demand has been satisfied) may be adjusted by changing the jumper position across the five pins on the integrated control. The unit is shipped with a factory heat fan OFF setting of 120 seconds. The fan OFF delay affects comfort and is adjustable to satisfy individual applications. Adjust the fan OFF delay to achieve a supply air temperature between 90° and 110° F at the moment that the blower is de-energized. Longer OFF delay settings provide lower return air temperatures; shorter settings provide higher return air temperatures. See Figure 56.

HEAT FAN-OFF TIME SECONDS

To adjust fan-off timing, reposition jumper across pins to achieve

desired setting.

Figure 56

Thermostat Heat Anticipation

Set the heat anticipator setting (if adjustable) according to the amp draw listed on the wiring diagram that is attached to the unit.

Electrical

1.Check all wiring for loose connections.

2.Check for the correct voltage at the furnace (furnace operating).

3.Check amp–draw on the blower motor.

Motor Nameplate__________Actual__________

Blower Speeds

Follow the steps below to change the blower speeds.

1.Turn off electrical power to furnace.

2.Remove blower access panel.

3.Disconnect existing speed tap at control board speed terminal.

NOTE: Termination of any unused motor leads must be insulated.

4.Place unused blower speed tap on integrated control “PARK” terminal or insulate.

5.Refer to blower speed selection chart on unit wiring diagram for desired heating or cooling speed. See Blower performance data beginning on the next page.

6.Connect selected speed tap at control board speed terminal.

7.Re-secure blower access panel.

8.Turn on electrical power to furnace.

9.Recheck temperature rise.

Electronic Ignition

The integrated control has an added feature of an internal Watchguard control. The feature serves as an automatic reset device for integrated control lockout caused by ignition failure. This type of lockout is usually due to low gas line pressure. After one hour of continuous thermostat demand for heat, the Watchguard will break and remake thermostat demand to the furnace and automatically reset the integrated control to begin the ignition sequence.

Exhaust and Air Intake Pipe

1.Check exhaust and air intake connections for tightness and to make sure there is no blockage.

2.Is pressure switch closed? Obstructed exhaust pipe will cause unit to shut off at pressure switch. Check termination for blockages.

3.Obstructed pipe or termination may cause rollout switches to open. Reset manual flame rollout switches on burner box assembly if necessary.

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Contents A95UH, A93UH, 95G1UH & 92G1UH Table of ContentsFront View Side View A95UH, A93UH, 95G1UH & 92G1UH Unit Dimensions inches mmExpanded View A95UH, A93UH, 95G1UH &92G1UH Gas Furnace Safety InformationShipping and Packing List Building CodesUse of Furnace as a Construction Heater Installed LocationsInstalled in Combination with a Cooling Coil Combustion, Dilution & Ventilation Air Product Contains Fiberglass WoolConfined Space Unconfined SpaceAir from Inside Equipment in Confined Space All Air From InsideAir from Outside Setting Equipment InstallationShipping Bolt Removal Upflow ApplicationsSide Return Air With transition and filter Installation ClearancesReturn Air Guidlines Horizontal Applications Optional Return Air Base Upflow Applications OnlyRemoving the Bottom Panel Suspended Installation of Horizontal Unit Horizontal Application Installation ClearancesReturn Air -- Horizontal Applications Pipe & Fittings SpecificationsFilters Duct SystemCanadian Applications Only Piping and Fittings SpecificationsOutdoor Termination Kits Usage Joint Cementing ProcedureExhaust Piping Figures 22 Minimum Vent Pipe Lengths Exhaust PipeHorizontal Application Maximum Allowable Vent Length Right Hand Discharge Shown Intake Piping Figures 24 through Typical AIR Intake Pipe Connections General Guidelines for Vent Terminations For Canadian Installations OnlyVent Termination Clearances For NON-DIRECT Vent INSTALLATiONS in the USA and CanadaFor Direct Vent INSTALLATiONS in the USA and Canada Field Supplied Wall Termination 15F75 or 44J41Direct Vent Concentric Rooftop Termination Direct Vent Application Using Existing Chimney NON-DIRECT Vent Roof Termination KIT NON-DIRECT Vent Application Using Existing ChimneyNON-DIRECT Vent Field Supplied Wall Termination Condensate PipingUnit shown in upflow position Condensate Trap and Plug LocationsUnit shown in upflow position with remote trap Condensate Trap LocationsFire or Explosion Hazard Gas PipingLeak Check Horizontal Applications Possible Gas Piping Configurations Carbon Monoxide Poisoning Hazard Interior MAKE-UP BOX Installation Precautions and ProceduresAccessory Terminals ElectricalFurnace & Condensing Unit Thermostat Designations Typical Field Wiring DiagramIndoor Blower Speeds Generator Use Voltage RequirementsTypical Wiring Diagram Placing the furnace into operation Integrated ControlAutomatic Hot Surface Ignition System Unit Start-Up GAS Valve Shown in on Position Supply Pressure Measurement Gas Pressure AdjustmentManifold Pressure Measurement High Altitude InformationCarbon Monoxide Poisoning Hazard Heat FAN-OFF Time Seconds Electrical SHOCK, Fire Or Explosion Hazard Cleaning the Burner Assembly Failure Codes Planned ServiceCabinet Parts Heating Parts Repair Parts ListControl Panel Parts Blower PartsUnit SET UP Unit Operation Manufacturer Requirements BELOW. Keep Clear of ALL Obstructions

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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