Allied Air Enterprises 80G1UH, A80UH Remove 5 Screws If Necessary, NOx INSERTS Figure

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Remove 5 Screws If Necessary

9.Remove screws from both sides, top and bottom of vestibule panel.

10.Remove heat exchanger. It may be necessary to spread cabinet side to allow more room. If so, remove five screws from the left side or right side of cabinet. See Figure 40.

11.Backwash using steam. Begin from the bumer opening on each clam. Steam must not exceed 275°F.

12.To clean burners, run a vacuum cleaner with a soft brush attachment over the face of burners. Visually inspect inside the burners and crossovers for any blockage caused by foreign matter. Remove any blockage. Figure 38 shows burner detail.

13.To clean the combustion air inducer visually inspect and using a wire brush clean where necessary. Use compressed air to clean off debris and any rust.

14.Reinstall heat exchanger in vestibule. (Replace the five screws in the cabinet from step 10 if removed).

15.NOx units only - Replace NOx inserts.

16.Reinstall collector box and combustion air assembly. Reinstall all screws to the collector box and combustion air inducer. Failure to replace all screws may cause leaks. Inspect gaskets for any damage and replace if necessary.

17.Reinstall burner box, manifold assembly and burner box cover.

Remove 5 Screws If Necessary

(either side of cabinet)

NOx INSERTS

Figure 39

Figure 40

18.Reconnect all wires.

19.Reconnect top cap and vent pipe to combustion air inducer outlet.

20.Reconnect gas supply piping.

21.Turn on power and gas supply to unit.

22.Set thermostat and check for proper operation.

23.Check all piping connections, factory and field, for gas leaks. Use a leak detecting solution or other preferred means.

NOx INSERTSManual background CAUTION

Some soaps used for leak detection are corrosive to certain metals. Carefully rinse piping thoroughly after leak test has been completed. Do not use matches, candles, flame or other sources of ignition to check for gas leaks.

24.If a leak is detected, shut gas and electricity off and repair leak.

25.Repeat steps 24 and 26 until no leaks are detected.

26.Replace access panel.

506526-01

Issue 1031

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Contents Warm Air Gas Furnace TABLE OF CONTENTSINSTALLATION INSTRUCTIONS A80UH & 80G1UHSIDE VIEW A80UH & 80G1UH Unit Dimensions - inches mmFRONT VIEW 506526-01 A80UH & 80G1UHA80UH & 80G1UH Gas Furnace Safety InformationInstalled Locations DANGERUse of Furnace as a Construction Heater Installed in Combination with a Cooling CoilHeating Unit Installed Upstream of Cooling Unit Temperature Rise215 Metropolitan Drive West Columbia, SC GeneralProduct Contains Fiberglass Wool Allied Air Enterprises, IncFigure Air from Inside Unconfined SpaceConfined Space Equipment in Confined Space - All Air From InsideEQUIPMENT IN CONFINED SPACE Upflow Applications Setting EquipmentUpflow Application Installation Clearances 5.Bottom and one side return air Return Air - Upflow Applications1800 cfm 850 L/s must have one of the following 3.Bottom return air 4.Return air from both sidesHorizontal Applications Horizontal Application Installatioin clearancesRemoving the Bottom Panel Removing the Bottom Panel FigureSupply Air Plenum Horizontal Application Unit installed on PlatformFilters Table Duct SystemFigure UPFLOW POSITION VentingMounting Screws Location Figure UPFLOW POSITION UPFLOW POSITIONHORIZONTAL RIGHT POSITION Horizontal PositionHORIZONTAL LEFT POSITION Figure HORIZONTAL LEFT POSITIONIssue Venting Using a Masonry ChimneyCommon Venting Using Metal Lined Masonry Chimney Vent Connection FigureGeneral Venting Requirements Page 17 of Issue506526-01 Serving a Single Category I ApplianceIssue Page 18 of506526-01 Serving a Single Category I ApplianceIssue Page 19 ofServing Two or More Category I Appliances Vent Connector CapacityServing Two or More Category I Appliances Common Vent CapacityServing Two or More Category I Appliances Table Common Vent CapacityServing Two or more Category I Appliances Table Vent Connector CapacityPage 22 of Removal of the Furnace from Common VentCARBON MONOXIDE POISONING HAZARD IssueIssue Gas PipingGas Supply Gas Pipe Capacity - ft³/hr m³/hrPage 24 of Possible Gas Piping ConfigurationsFigure Horizontal Applications IssueINTERIOR MAKE-UPBOX INSTALLATION Figure INTERIOR MAKE-UPBOX INSTALLATION FigureLeak Check Figure Electrical ELECTROSTATIC DISCHARGE ESDCondensing Unit Thermostat Designations Accessory TerminalsGenerator Use - Voltage Requirements Thermostat506526-01 Wiring Diagram FigureIssue Page 27 ofAutomatic Hot Surface Ignition System Typical Field Wiring Diagram FigureIntegrated Control Gas Valve Operation Figure FOR YOUR SAFETY READ BEFORE LIGHTING UNITUnit Start-UP Placing the Furnace into OperationManifold Pressure Measurement Gas Pressure Adjustment Gas Flow ApproximateHeating Sequence Of Operation Figure Supply Pressure MeasurementPressure Switch Manifold Pressure Settings and Pressure SwitchOther Unit Adjustments Flame Rollout SwitchesElectronic Ignition Thermostat Heat AnticipationElectrical Blower SpeedsFlue And Chimney ServiceELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD Blower506526-01 Cleaning the Heat Exchanger and BurnersIssue Page 34 ofNOx INSERTS Figure Remove 5 Screws If NecessaryPage 36 of PLANNED SERVICEFAILURE CODES IssueControl Panel REPAIR PARTS LISTCabinet Parts Heating Parts506526-01 START-UP& PERFORMANCE CHECK LIST UNIT SET UPIssue Page 38 of506526-01 IssueUNIT OPERATION Page 39 of