Allied Air Enterprises 95G1DF, A95DF Primary Limit, Flame Rollout Switches Two, Pressure Switch

Page 39

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. These limits are factory set and require no adjustment.

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 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 51.

 

 

 

HEAT FAN-OFF TIME IN SECONDS

 

 

 

 

 

 

 

 

NO JUMPER

 

 

 

 

 

 

 

 

 

To adjust fan−off timing, reposition jumper across pins to

 

 

 

 

 

 

 

achieve desired setting.

 

 

 

 

 

60 Second

90 Second

120 Second

180 Second

off Time

off Time

 

off Time

 

off Time

60

90

120

180

60

90

120

180

60

90

120

180

60

90

120

180

FIGURE 51

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 (with furnace operating). Correct voltage is 120 VAC ± 10%.

3.Check amp–draw on the blower motor with the blower compartment access panel in place.

Motor Nameplate__________Actual__________

Blower Speeds

Follow the steps below to change the blower speeds.

1.Turn off electrical power to furnace.

2.Remove blower compartment 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.

506725-01

Issue 1109

Page 39 of 48

Page 38 Page 40
Image 39
Page 38 Page 40
Contents A95DF, A93DF, 95G1DF & 92G1DF Table of ContentsFront View Side View TOP ViewParts Arrangement Building Codes Safety InformationGas Furnace Shipping and Packing List Package 1 of 1 containsInstalled in Combination with a Cooling Coil Locations and ClearancesUse of Furnace as Construction Heater Combustion, Dilution & Ventilation Air Product Contains Fiberglass WoolEquipment in Confined Space − ALL AIR from Inside Unconfined SpaceConfined Space Air from InsideEquipment in Confined Space − ALL AIR from Outside 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 Models Exhaust Piping FigureMinimum Vent Pipe Lengths MIN. Vent LengthA95DF / 95G1DF and A93DF / 92G1DF Typical Intake Pipe Connections Direct Vent Applications Typical Exhaust Pipe ConnectionsGeneral Guidelines for Vent Terminations For Canadian Installations OnlyIntake Piping Typical AIR Intake Pipe ConnectionsInside 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 Field Supplied Wall Termination NON−DIRECT Vent Application Using Existing ChimneyNON−DIRECT Vent Field Supplied Wall Termination Extended NON−DIRECT Vent Roof Termination KITUnit with Evaporator Coil Condensate PipingTrap / 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 Carbon Monoxide Poisoning Hazard Removal of the Furnace from Common VentElectrostatic Discharge ESD Precautions and ProceduresAccessory Terminals ElectricalGenerator Use Voltage Requirements Indoor Blower SpeedsTypical Wiring Diagram Placing the furnace into operation Integrated ControlAutomatic Hot Surface Ignition System Unit Start-UpFailure To Operate Priming Condensate TrapGas Valve Operation Figure Turning Off Gas to UnitGAS Meter Clocking Chart Burner Orifice Conversion Kits at Varying Altitudes Carbon Monoxide Poisoning Hazard Primary Limit Flame Rollout Switches TwoPressure Switch Temperature RiseBlower Data A93DF1D / 92G1DF Blower Data A95DF1D / 95G1DF Electrical SHOCK, Fire Or Explosion Hazard Cleaning the Burner Assembly Diagnostic Codes Planned ServiceBlower Parts Repair Parts ListCabinet Parts Heating Parts Control Panel PartsReturn Duct GAS SupplyIntake / Exhaust Pipe Duct System Supply AIR DuctUnit Operation Manufacturer Requirements Clear of ALL Obstructions

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.
Top Page Image Contents