Owners Manuals INYOPools.Archives. INYO Products has an extensive library of owners manuals and technical documents for your pool and spa equipment.You may access this free library by clicking on the manufacturer titles below.Guide to Side Wall Vent Chimneys Flues.GAS APPLIANCE DIRECT VENT CLEARANCES CONTENTS clearance distances required between a direct vent side wall terminal building components, mechanical systems, windows, soffits, openings, decks, walks, etc.POST a QUESTION or READ FAQs about the installation or diagnosis of sidewall vent or direct vent chimney or flue exhaust systems for heating appliances oil, gas, other fuels firing heating appliances fireplaces.Gas Appliance Direct Vent Clearances Distances from direct gas vent to building features Sidewall vent, direct vent, direct exhaust systems for gas fired heaters.REFERENCESInspect.APedia tolerates no conflicts of interest.We have no relationship with advertisers, products, or services discussed at this website.Direct vent exhaust clearance distances for gas fueled appliances Table illustrations of the required space between a direct or side wall vent for a gas fired heating appliance and building windows, doors, corners, gas meter, air intakes, sidewalks, balconies decks and other building features.This article series describes side wall vent systems for conventional mid range efficiency heating boilers, furnaces water heaters.We include for comparison, low temperature side wall vent systems used by high efficiency or condensing boilers, furnaces water heaters.Green links show where you are.Copyright 2. 01. 7 Inspect.Apedia. com, All Rights Reserved.Clearance Requirements for Direct Vented Gas Appliances.Laars Mighty Therm 2 Manual' title='Laars Mighty Therm 2 Manual' />Gas Fireplace Direct Vent Termination Cap Clearance Distances clearances between the gas fireplace exhaust vent and other building components or features.This. Archives. INYO Products has an extensive library of owners manuals and technical documents for your pool and spa equipment. Bluetooth Adapter For Windows 7 64 Bit Free Download more. You may access this free library by.Laars Mighty Therm 2 MT2V 200 Pdf User Manuals.View online or download Laars Mighty Therm 2 MT2V 200 Installation And Operation Instructions Manual.Mighty-Therm_Lo-Nox_water_heater_4_-342x321.jpg' alt='Laars Mighty Therm 2 Manual' title='Laars Mighty Therm 2 Manual' />Exhaust Vent Termination Clearance Requirements.In a table below we provide a complete list of required clearance distances between the air intake or combustion gas exhaust vents for direct vented heating appliances.Click to enlarge any imageSome highlights include The exhaust vent terminal shall be located at least 3 feet above any forced air inlet located within 1.See the figure at page top for a depiction courtesy of Thermo Pride of the minimum required clearances between vent terminations and building features according to the National Fuel Gas Code NFGC.The vent terminal shall be at least 1.The bottom of the vent terminal shall be located at least 1.The exhaust vent terminal shall not be located.The vent terminal shall be installed a minimum of 1.L shaped structure see table below.Page top Illustration adapted from Thermo Products installation instructions click to enlarge this or any other image or photo at Inspect.APedia. 1. 5Colour illustration of direct vent sidewall terminal clearance distances adapted from American Standard Furnace installation instructions that in turn cites ANSI Z2.NFPA 5. 4 National Fuel Gas Code for US installations and cites CSA B1.Natural Gas and Propane Installation Code for Canadian direct vent gas vent installations.Table of NFGC Recommended Clearance Distances from a Direct Vent Gas Appliance Terminal to Other Building Features Direct vent gas exhaust termination item clearance.Distance required U.S. Distance required CanadaADistance above grade ground surface, balcony, deck, porch, veranda.BDistance to a window or door that is operable can be opened 1.Note 2 or 6 to 3.BTUH6 inches 1. 5 cm for appliances lt 1.Btuh 3 kw,9. inches 2.Btuh 3 kw and lt.Btuh 1. 5 kw,1. Btuh 1.CDistance to a permanently closed or non operable window 1.Note 3Note 3DDistance to a ventilated soffit roof eaves, overhang above the vent terminal within a horizontal distance of two feet from the centerline of the terminal.Note 3Note 3EDistance to an un vented soffit 2.Note 3Note 3FDistance to outside corner of the building.Note 3Note 3GDistance from the vent centerline to a building inside corner.Note 3Note 3HDistance to each side of centerline extended above a gas meter regulator assembly 4 feet Note 3Note 3IDistance to a gas service regulator vent outlet.Note 3Note 3JDistance to a non mechanical air supply inlet to the building or to the combustion air inlet for any other appliance.Note 26 inches 1.Btuh 3 kw,1. 2 inches 3.Btuh 3 kw and lt.Btuh 3. 0 kw, 3. Btuh 3.Btuh 3 kw,9. inches 2.Btuh 3 kw and lt.Btuh 1. 5 kw,1. Btuh 1.KDistance to a mechanical systems air supply inlet 6 feet 1.LDistance above a paved sidewalk or paved driveway on public property 7 feet Note 4 MDistance below a balcony, deck, porch, veranda.Notes 7,82. 4 inches Note 3 Distances between a gas fireplace direct vent termination cap and other building features or mechanical systems.See GAS FIREPLACE VENT CLEARANCE REQUIREMENTS Opinions on Additional Recommended Clearance Distances from a Direct Vent Gas Appliance Exhaust Opening to other Building Features or Equipment Distance from a clothes dryer exhaust vent wall termination to the nearest air inlet point on a direct vent chimney.Note 5 CLOTHES DRYER VENT CLEARANCES Distance to an air conditioner or heat pump compressorcondenser unit to the nearest point of a direct vent gas heater exhaust.Note 6 Distance to air intake and exahust vent openings of another direct vented gas fired appliance.At least 3 feet 0.Note 9 Notes 1 AuthoritiesSources CSA B1.Natural Gas and Propane Installation Code.National Fuel Gas Code, ANSI Z2.NFPA 5. 4 8Gas Fired High Efficiency Furnace Down Flow Direct Vent Sealed Combustion Thermo Pride Model CMA1 5.N CMA2 7. 5N Installation and Service Manual 1.U. S. National Fuel Gas Code.Note 7 below. 2. For non direct vent applications such as the side wall vent appliance shown earlier on this page, the required distance is much greater 4 feet to the side or below the opening, or 1 foot above the opening.Typical clearance from an operable window to a direct vented gas appliance vent outlet 6 inches 1.Btuhr 3 k. W, 1. Btuhr 3 k.W and 1. Btuhr 3.W, 3. Btuhr 3. 0 k.W3. This distance requirement may vary in order to be in accordance with local building codes, the gas supplier, and the equipment manufacturers own product installation specification.Clearance must be in accordance with local installation codes and the requirements of the gas supplier.In direct vent applications, this clearance distance must be in compliance with local building codes, the requirements of the fuel gas supplier for the heating appliance in use, and the appliance manufacturers instructions.For non direct vent applications that is, side wall venting only, the required clearance is 7 feet.A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwelling and serves both dwellings.This is the authors OPINION based on other clearance distances and standards discussed in the article above.See CLOTHES DRYER VENT CLEARANCESAlso see CLOTHES DRYER VENTING FAQs.This is the authors OPINION considering that heat from the gas exhaust vent blowing onto an AC compressor unit condensing coil could impact the coils ability to condense refrigerant back to liquid form, affecting the condenser units efficiency and life.Im considering the situation in which the hot gas exhaust blows onto the air intake side of a condensing coil.Most modern condenser units draw cooling air in from the unit sides and push it out the units top.Also see CLEARANCE DISTANCE, HVAC7.Direct Vent Terminal Clearances cited in AMERICAN STANDARD GAS FURNACE INSTALLATION MANUAL PDF 2.American Standard Heating Air Conditioning, that in turn cites In accordance with the current CSA B1.Natural Gas and Propane Installation Code.In accordance with the current ANSI Z2.NFPA 5. 4 National Fuel Gas Code.Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.Watch out there could be other more dangerous conditions if the air intake vacuum created by the AC compressor condenser unit actually draws air or gases out from the nearby direct vent gas heater or from a passive vented atmospheric vented gas fireplace appliance, that increased draft may impact the safe operation of the gas burner, risking dangerous or even fatal carbon monoxide hazards.Separately, if a different compressor unit design caused the units exhaust to blow into the gas heater exhaust vent, that could prevent safe venting of exhaust gases.Where either these conditions are possible Id increase the clearance distance to 1.This is an excerpt from installation instructions for an example system, the Aerco GF 5.Innovation Series Re.Con Water Heater Venting and Combustion Air Guide PDF retrieved 2.TAG 0. 04. 30. QGF 5.
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