Allied Air Enterprises 80G1UH, A80UH Leak Check, Figure Electrical ELECTROSTATIC DISCHARGE ESD

Page 25
Leak Check

Leak Check

After gas piping is completed, carefully check all piping connections (factory and field installed) for gas leaks. Use a leak detecting solution or other preferred means.

NOTE: If emergency shutoff is necessary, shut off the main manual gas valve and disconnect the main power to the furnace. The installer should properly label these devices.

Figure 28INTERIOR MAKE-UP BOX INSTALLATION 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.

The furnace must be isolated by closing its individual manual shut-off valve and disconnecting from from the gas supply system the during any pressure testing of the gas supply system at pressures less than or equal to 1/2 psig (3.48 kPa, 14 inches w.c.).

Manual backgroundManual background IMPORTANT

When testing pressure of gas lines, gas valve must be disconnected and isolated. See Figure 28. Gas valves can be damaged if subjected to pressures greater than 1/2 psig (3.48 kPa, 14 inches w.c.).

Figure 28

Electrical

ELECTROSTATIC DISCHARGE (ESD)

Precautions and Procedures

Manual backgroundManual background 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.

The unit is equipped with a field make-up box on the left hand side of the cabinet. The make-up box may be moved to the right side of the furnace to facilitate installation. If the make-up box is moved to the right side, clip the wire ties that bundle the wires together. The excess wire must be pulled into the blower compartment. Secure the excess wire to the existing harness to protect it from damage.

INTERIOR MAKE-UP BOX INSTALLATION

Figure 29

INTERIOR MAKE-UP BOX INSTALLATION

Figure 30

Refer to Figure 32 for schematic wiring diagram and troubleshooting and Figure 33 for field wiring.

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.

506526-01

Issue 1031

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Contents INSTALLATION INSTRUCTIONS TABLE OF CONTENTSA80UH & 80G1UH Warm Air Gas FurnaceFRONT VIEW A80UH & 80G1UH Unit Dimensions - inches mmSIDE VIEW 506526-01 A80UH & 80G1UHInstalled Locations Safety InformationDANGER A80UH & 80G1UH Gas FurnaceHeating Unit Installed Upstream of Cooling Unit Installed in Combination with a Cooling CoilTemperature Rise Use of Furnace as a Construction HeaterProduct Contains Fiberglass Wool GeneralAllied Air Enterprises, Inc 215 Metropolitan Drive West Columbia, SCConfined Space Unconfined SpaceEquipment in Confined Space - All Air From Inside Figure Air from InsideEQUIPMENT IN CONFINED SPACE Upflow Application Installation Clearances Setting EquipmentUpflow Applications 1800 cfm 850 L/s must have one of the following Return Air - Upflow Applications3.Bottom return air 4.Return air from both sides 5.Bottom and one side return airRemoving the Bottom Panel Horizontal Application Installatioin clearancesRemoving the Bottom Panel Figure Horizontal ApplicationsFilters Horizontal Application Unit installed on PlatformTable Duct System Supply Air PlenumMounting Screws Location Figure UPFLOW POSITION VentingUPFLOW POSITION Figure UPFLOW POSITIONHORIZONTAL LEFT POSITION Horizontal PositionFigure HORIZONTAL LEFT POSITION HORIZONTAL RIGHT POSITIONCommon Venting Using Metal Lined Masonry Chimney Venting Using a Masonry ChimneyVent Connection Figure IssueGeneral Venting Requirements Page 17 of IssueIssue Serving a Single Category I AppliancePage 18 of 506526-01Issue Serving a Single Category I AppliancePage 19 of 506526-01Serving Two or More Category I Appliances Vent Connector CapacityCommon Vent Capacity Serving Two or More Category I AppliancesServing Two or more Category I Appliances Table Table Common Vent CapacityVent Connector Capacity Serving Two or More Category I AppliancesCARBON MONOXIDE POISONING HAZARD Removal of the Furnace from Common VentIssue Page 22 ofGas Supply Gas PipingGas Pipe Capacity - ft³/hr m³/hr IssueFigure Horizontal Applications Possible Gas Piping ConfigurationsIssue Page 24 ofLeak Check INTERIOR MAKE-UPBOX INSTALLATION FigureFigure Electrical ELECTROSTATIC DISCHARGE ESD INTERIOR MAKE-UPBOX INSTALLATION FigureGenerator Use - Voltage Requirements Accessory TerminalsThermostat Condensing Unit Thermostat DesignationsIssue Wiring Diagram FigurePage 27 of 506526-01Integrated Control Typical Field Wiring Diagram FigureAutomatic Hot Surface Ignition System Unit Start-UP FOR YOUR SAFETY READ BEFORE LIGHTING UNITPlacing the Furnace into Operation Gas Valve Operation FigureHeating Sequence Of Operation Figure Gas Pressure Adjustment Gas Flow ApproximateSupply Pressure Measurement Manifold Pressure MeasurementOther Unit Adjustments Manifold Pressure Settings and Pressure SwitchFlame Rollout Switches Pressure SwitchElectrical Thermostat Heat AnticipationBlower Speeds Electronic IgnitionELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD ServiceBlower Flue And ChimneyIssue Cleaning the Heat Exchanger and BurnersPage 34 of 506526-01NOx INSERTS Figure Remove 5 Screws If NecessaryFAILURE CODES PLANNED SERVICEIssue Page 36 ofCabinet Parts REPAIR PARTS LISTHeating Parts Control PanelIssue START-UP& PERFORMANCE CHECK LIST UNIT SET UPPage 38 of 506526-01UNIT OPERATION IssuePage 39 of 506526-01
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