Reliant FVIR GAS WATER HEATER Installation Instructions And Use & Care Manual
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Contents
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15Piping InstallationPiping, fittings, and valves should be installed accordingto the installation drawing (Figure 13). If the indoorinstallation area is subject to freezing temperatures, thewater piping must be protected by insulation.The water supply pressure should not exceed 80 psi. Ifthis occurs, a pressure reducing valve with a bypass mayneed to be installed in the cold water inlet line. This shouldbe placed on the supply to the entire house in order tomaintain equal hot and cold water pressures.IMPORTANT: Heat cannot be applied to the water fittingson the heater as they may contain nonmetallic parts. Ifsolder connections are used, solder the pipe to the adapterbefore attaching the adapter to the hot and cold waterfittings.IMPORTANT: Always use a good grade of joint compoundand be certain that all fittings are drawn up tight.1. Install the water piping and fittings as shown in Figure13. Connect the cold water supply (3/4” NPT) to thecold water inlet fitting. Connect the hot water supply(3/4” NPT) to the hot water outlet fitting.IMPORTANT: Some models may contain energy savingheat traps to prevent the circulation of hot water within thepipes. Do not remove the inserts within the heat traps.2. The installation of unions in both the hot and cold watersupply lines is recommended for ease of removing thewater heater for service or replacement.3. The manufacturer of this water heater recommendsinstalling a tempering valve or an anti-scald devicein the domestic hot water line as shown in Figure 14.These valves reduce the point-of-use temperature ofthe water by mixing cold and hot water and are readilyavailable for use.4. If installing the water heater in a closed water system,install an expansion tank in the cold water line asspecified under Closed System/Thermal Expansion.5. Install a shut-off valve in the cold water inlet line. Itshould be located close to the water heater and beeasily accessible. Know the location of this valve andhow to shut off the water to the heater.6. A temperature and pressure relief valve must beinstalled in the opening marked “Temperature andPressure (T & P) Relief Valve” on the water heater.A discharge line must be added to the opening ofthe T&P Relief Valve. Follow the instructions underTemperature and Pressure Relief Valve.7. After piping has been properly connected to the waterheater, remove the aerator at the nearest hot waterfaucet. Open the hot water faucet and allow the tankto completely fill with water. To purge the lines ofany excess air, keep the hot water faucet open for3 minutes after a constant flow of water is obtained.Close the faucet and check all connections for leaks.WATER SYSTEM PIPINGVERTICAL GAS VENT SYSTEM WITHTYPE B DOUBLE WALL VENT PIPE.3 FT. MINIMUMLISTED VENT CAP2 FT. MINIMUM ABOVE ANY OBJECTWITHIN 10 FT. HORIZONTALLYTYPE B DOUBLEWALL VENT PIPE**MAINTAINSPECIFIEDCLEARANCEVENTCONNECTORSLOPE UP1/4 IN. PER FT.MINIMUM*MAINTAINCLEARANCESUPPORTSTRAPFIGURE 11.VENTING THROUGH A CHIMNEY WITHTYPE B DOUBLE WALL VENT PIPE.5 FT. MINIMUMLISTED VENT CAPVENT CONNECTORUNUSED CHIMNEYFLUE OR MASONRYENCLOSURESEAL*MAINTAINCLEARANCEVENTCONNECTORSLOPE UP1/4 IN. PER FT.MINIMUM**MAINTAINSPECIFIEDCLEARANCESUPPORTSTRAPFIGURE 12.* Maintain vent pipe clearance requirements to local, stateand/or the “National Fuel Gas Code”, ANSI Z223.1(NFPA54)-current edition.** NFPA 211, Standard for Chimneys, Fireplaces, Vents, andSolid Fuel-Burning Appliances states that these chimneys areintended to be installed in accordance with the installationinstructions provided with each chimney support assembly.Minimum air space clearance to combustible materials should bemaintained as marked on the chimney sections. |
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