Goodman Mfg GAS-FIRED WARM AIR FURNACE IX. VENT/FLUE Pipe & Combustion AIR Pipe

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IX. VENT/FLUE PIPE & COMBUSTION AIR PIPE

GENERAL

WARNING

FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN BODILY INJURY OR DEATH. CAREFULLY READ AND FOLLOW ALL INSTRUCTIONS GIVEN IN THIS SECTION.

WARNING

UPON COMPLETION OF THE FURNACE INSTALLATION, CAREFULLY INSPECT THE ENTIRE FLUE SYSTEM BOTH INSIDE AND OUTSIDE OF THE FURNACE TO ASSURE IT IS PROPERLY SEALED. LEAKS IN THE FLUE SYSTEM CAN RESULT IN SERIOUS PERSONAL INJURY OR DEATH DUE TO EXPOSURE TO FLUE PRODUCTS, INCLUDING CARBON MONOXIDE.

A condensing gas furnace achieves its high level of efficiency by ex- tracting almost all of the heat from the products of combustion and cooling them to the point where condensation takes place. Because of the relatively low flue gas temperature and water condensation re- quirements, PVC pipe is used as venting material.

This furnace must not be connected to Type B, BW, or L vent or vent connector, and must not be vented into any portion of a factory built or masonry chimney except when used as a pathway for PVC as described later in this section. Never common vent this appliance with another appliance or use a vent which is used by a solid fuel appliance. Do not use commercially available “no hub connec- tors” other than those shipped with this product.

It is the responsibility of the installer to follow the manufacturers’ recommendations and to verify that all vent/flue piping and con- nectors are compatible with furnace flue products. Additionally, it is the responsibility of the installer to ensure that all piping and connections possess adequate structural integrity and support to prevent flue pipe separation, shifting, or sagging during furnace operation.

DUAL CERTIFICATION: NON-DIRECT/DIRECT VENT

This furnace is dual certified and may be installed as a non-direct vent (single pipe) or direct vent (dual pipe) appliance. A non-direct vent installation requires only a vent/flue pipe, while a direct vent installation requires both a vent/flue pipe and a combustion air intake pipe. Refer to the appropriate section for details concerning piping size, length, number of elbows, furnace connections, and terminations.

MATERIALS AND JOINING METHODS

WARNING

TO AVOID BODILY INJURY, FIRE OR EXPLOSION, SOLVENT CEMENTS MUST BE KEPT AWAY FROM ALL IGNITION SOURCES (I.E., SPARKS, OPEN FLAMES, AND EXCESSIVE HEAT) AS THEY ARE COMBUSTIBLE LIQUIDS. AVOID BREATHING CEMENT VAPORS OR CONTACT WITH SKIN AND/OR EYES.

Two- or three-inch nominal diameter PVC Schedule 40 pipe meet- ing ASTM D1785, PVC primer meeting ASTM F656, and PVC sol- vent cement meeting ASTM D2564 specifications must be used. Fittings must be DWV type fittings meeting ASTM D2665 and ASTM D3311. Carefully follow the manufacturer’s instructions for cutting, cleaning, and solvent cementing of PVC.

The use of Schedule 40 PVC or ABS cellular core (Foam Core) plas-

tic pipe is also acceptable as a flue/vent and intake pipe material. PVC primer meeting ASTM F656 and PVC solvent cement meeting ASTM D2564 specifications must be used. Fittings must be DWV type fit- tings meeting ASTM D2665 and ASTM D3311. Carefully follow the manufactures instructions for cutting, cleaning and solvent cement- ing of PVC.

In addition to PVC and ABS pipe and fittings, Innoflue® by Centrotherm Eco Systems and PolyPro® by M&G Duravent are also approved vent and combustion air materials for installations in the U.S.A. and Canada. Manufacturers Installation instructions for these products must be followed. These products have specific instructions for installing, joining and terminating. Do not mix materials or compo- nents of one manufacturer with materials or components of another manufacturer.

For Canadian installations; all PVC pipe, fittings and joining mate- rials must be UL S636 listed.

As an alternative to PVC pipe, primer, solvent cement, and fittings, ABS materials which are in compliance with the following specifi- cations may be used. Two-or-three-inch ABS Schedule 40 pipe must meet ASTM D1527 and, if used in Canada, must be CSA listed. Solvent cement for ABS to ABS joints must meet ASTM D2235 and, if used in Canada, must be CSA listed. The solvent cement for the PVC to ABS transition joint must meet ASTM D3138. Fittings must be DWV type fittings meeting ASTM D2661 and ASTM D3311 and, if used in Canada, must be CSA listed. Carefully follow the pipe manufacturers’ instructions for cutting, cleaning, and solvent cementing PVC and/or ABS.

All 90° elbows must be medium radius (1/4 bend DWV) or long radius (Long sweep 1/4 bend DWV) types conforming to ASTM D3311. A medium radius (1/4 bend DWV) elbow measures 3 1/ 16” minimum from the plane of one opening to the centerline of the other opening for 2” diameter pipe, and 4 9/16” minimum for 3” pipe.

PROPER VENT/FLUE AND COMBUSTION AIR PIPING PRACTICES

Adhere to these instructions to ensure safe and proper furnace performance. The length, diameter, and number of elbows of the vent/flue pipe and combustion air pipe (when applicable) affects the performance of the furnace and must be carefully sized. All piping must be installed in accordance with local codes and these instructions.

Piping must be adequately secured and supported to prohibit sag- ging, joint separation, and/or detachment from the furnace. Hori- zontal runs of vent/flue piping must be supported every three to five feet and must maintain a 1/4 inch per foot downward slope, back towards the furnace, to properly return condensate to the furnace’s drain system. Allowances should be made for minor expansion and contraction due to temperature variations. For this reason, particular care must be taken to secure piping when a long run is followed by a short offset of less than 40 inches.

Precautions should be taken to prevent condensate from freez- ing inside the vent/flue pipe and/or at the vent/flue pipe termina- tion. It is our recommendation that all vent/flue piping exposed to temperatures below 35°F for extended periods of time should be insulated with 1/2” thick closed cell foam. Also all vent/flue piping exposed outdoors in excess of the terminations shown in this manual (or in unheated areas) should be insulated with 1/2” thick closed cell foam. Inspect piping for leaks prior to installing insu- lation.

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Contents GCH95/GME95/GCH9 Table of Contents XIX. Maintenance XIV. Startup Procedure & AdjustmentXVII. Safety Circuit Description XVIII. TroubleshootingCarbon Monoxide Poisoning Hazard Component Identification Upflow/HorizontalWhat to do if YOU Smell GAS II. Safety ConsiderationsIII. Product Application Electrostatic Discharge ESD PrecautionsGeneral IV. Location Requirements & ConsiderationsExisting Furnace Removal Clearances and AccessibilitySuspended Furnace Furnace SuspensionThermostat Influences Combustion & Ventilation AIR RequirementsThermostat Location See 5.3.3-a VI. Installation Positions VII. Horizontal Applications & ConsiderationsHorizontal Furnace Drain PAN Recommended Installation PositionsVIII. Propane GAS /HIGH Altitude Installations Alternate Electrical and GAS Line ConnectionsDirect Vent Terminal Clearances Proper VENT/FLUE and Combustion AIR Piping Practices IX. VENT/FLUE Pipe & Combustion AIR PipeDual Certification NON-DIRECT/DIRECT Vent Materials and Joining MethodsStandard Furnace Connections Increased Clearance ConfigurationTermination Locations Canadian Venting RequirementsAlternate Furnace Connections Vent/Flue Pipe CutsNON-DIRECT Vent Single Pipe Piping Alternate Vent/Flue LocationDirect Vent Dual Pipe Piping Concentric Vent Termination Alternate Horizontal Vent Termination Dual PipeTermination of Multiple Direct Vent Furnaces Condensate Drain Lines & Drain TrapStandard Right or Left Side Drain Hose Connections Hose and Tube IdentificationAlternate VENT/FLUE Drain Hose Connections Drain TrapUpright Standard Connections Left Side Upright INSTALLATIONS-TRAP on Left SideUpright Drain Trap Mounting Left or Right Side Panel Horizontal Installations Right Side DownHorizontal Drain Trap Mounting Left or Right Side Panel Left Side DownJunction BOX Relocation Wiring HarnessXI. Electrical Connections Junction Box RelocationGME95/AMEH96 Furnace with 2-STAGE Condenser Field Wiring Thermostat DiagramField Wiring for GME95 /AMEH96 Furnacewith 2-Stage Volt Thermostat WiringNals XII. GAS Supply and Piping Volt HumidifierGAS Piping Connections Rack, manifold or gas valve Gas Piping Connections Horizontal Upflow ModelPropane GAS Tanks and Piping Propane Gas Installation TypPropane Gas Piping Chart XIII. Circulating AIR & FiltersBottom Return AIR Opening Upflow Models Checking Static Pressure 80% Furnace Shown, 90% SimilarDuct Flange Cut Outs Checking Duct StaticFilter Locations XIV. Startup Procedure & AdjustmentPermanent Minimum Filter Area sq. Disposable Minimum Filter area sq.GAS Supply Pressure Measurement White-Rodgers Model 36G54 Connected to ManometerWhite-Rodgers Model 36G54 Two-Stage Honeywell Model VR9205 Connected to ManometerGAS Manifold Pressure Measurement and Adjustment Measuring Inlet Gas Pressure Alt. MethodGAS Input Rate Measurement Natural GAS only Temperature Rise Measurement Temperature RiseCirculator Blower Speeds Heating Mode Circulator Blower FAN Timing AdjustmentSetting Furnace Operating Mode Power UPPage XVIII. Troubleshooting XIX. Maintenance XXI. Repair & Replacement Parts XX. Before Leaving AN InstallationNo signal Troubleshooting ChartContinuously Blower Performance Data MH95ACSH96 AMEH96 GCH95 / GCH9115 GME95 MH950453,0704,0905D MH950703,0904,1155 Wiring DiagramMH950905CX GME95 / AMEH96 Exemptions GAS Vent Directly BELOW. Keep Clear of ALL ObstructionsThis page Left Intentionally Blank This page Left Intentionally Blank This page Left Intentionally Blank Quality Makes the Difference