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Installation Indoor Direct Vent Tankless Water Heater
Models GN75DNSRSA, GN94DNSRSA, GP94DNSRSA
Instructions
FOR INDOOR APPLICATIONS ONLY
Questions? Call 888.HOTWTER (888.468.9837) or Visit our website at ge.com
WARNING: Read entire manual. Failure to follow all guides and rules could cause personal
injury or property damage.
• Check with your state and/or local public works department for plumbing codes. You must follow their
guides as you install the Water Heater.
NOTE: Failure to comply with
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Installation Instructions SAFETY PRECAUTIONS (cont.) DANGER • The flow of combustion and ventilation air shall not be obstructed. Read and follow water heater warnings and instructions. If owner’s manual is missing, contact • This appliance is not suitable for use in an the retailer or manufacturer. application such as a pool or spa heater that uses chemically treated water. (This appliance is suitable for filling large or whirlpool bath tubs with potable water.) SAFETY PRECAUTIONS (cont.) • If
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Installation Instructions PARTS PROVIDED Locate the parts packed with the Water Heater. 1 4 #10 x 1 ⁄4″ Wood Screws Gas Valve 3/4″ FNPT Ball Valve TOOLS YOU WILL NEED OTHER TOOLS THAT MIGHT BE REQUIRED • Pipe Wrenches (2) • Gloves • Hammer Drill with Concrete Bits • Adjustable Pliers • Safety Glasses • Saw • Screwdrivers (2) • Threading Machine with Heads and Oiler • Wire Cutters • Core Drill with Diamond Head • Torch Set • Copper Tubing Cutter • Steel Pipe Cutter MATERIALS YOU WILL NEED TO SUPP
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Installation Instructions DIMENSIONS A B H E G I F J C D K GN75/GN94/GP94DNSRSA DIM. DESCRIPTION IN. (MM) A Width 14 (355.6) 5 B Depth 9 ⁄ 8 (244.5)* 7 C Height – Unit 22 ⁄ 8 (582) 1 D Height – with brackets 25 ⁄ 2 (647.7) 5 E Hot Water Outlet – from wall 3 ⁄ 8 (91)* 5 F Hot Water Outlet – from center 4 ⁄ 16 (110) 13 G Cold Water Inlet – from wall 2 ⁄ 16 (70)* 1 H Cold Water Inlet – from center 1 ⁄ 8 (27) 7 I Gas Connection – from wall 3 ⁄ 8 (99)* 1 J Gas Connection – from center 3 ⁄ 2 (89) 5 Fr
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Installation Instructions PLANNING FOR VENTING INTAKE/EXHAUST GUIDELINES Refer to the specific instructions on your vent • Venting should be as direct as possible with product for additional installation requirements. a minimum number of pipe fittings. • This water heater is a direct vent water heater and • Vent diameter must not be reduced. therefore is certified and listed with the vent system. • Do not connect the venting system with You must use vent components that are certified an existing
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Installation Instructions FLUE TERMINAL CLEARANCES U.S. INSTALLATIONS CLEARANCES PER REF DESCRIPTION ANSI Z21.10.3 A Clearance above grade, veranda, porch, deck or snowline 36 inches (91 cm) B Clearance to window or door that may be opened 12 inches (30 cm) C Clearance to permanently closed window * D Vertical clearance to ventilated soffit, located above the terminal within * a horizontal distance of 2 feet (61 cm) from the center line of the terminal E Clearance to unventilated soffit * F Clea
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Installation Instructions ADDITIONAL CLEARANCES – VENT TERMINAL These clearances are applicable to both concentric terminations and nonconcentric vent exhaust terminations. Local codes supersede these clearances. • Avoid termination locations near a dryer vent. • Avoid termination locations near commercial cooking exhaust. 7
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Installation Instructions FLUE INSTALLATION – CONDENSATE DRAIN HORIZONTAL TERMINATION WITH VERTICAL TERMINATION (condensate collector A CONDENSATE DRAIN required in all installations) 3 in (75 mm) minimum 8
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Installation Instructions PLANNING FOR PLUMBING (shown with optional pipe cover) Optional Pipe Cover (AGTPCM) shown shaded. Unit Pipe cover not required, However, consideration should be taken in the design of the rough plumbing to allow installation of unit and pipe cover. 1 6 ⁄2″ 7″ 12″ Suggested area for 12″ Water and Gas lines to 1 4 ⁄2″ come through the wall Water 18″ min. so the optional pipe 7 through 9 ⁄8″ cover can be installed, the wall 3 if desired. 3 ⁄8″ Gas 1 2 ⁄2″ 9″ 1 2 ⁄2″ 1 1 2
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Installation Instructions CLEARANCES FOR WATER HEATER MOUNTING THE WATER HEATER WARNING: Combustible CAUTION: Reinforcement of the construction refers to adjacent walls and ceiling wall is required in case the wall is not strong and should not be confused with combustible or enough to hold the water heater. Do not mount flammable products and materials. Combustible to drywall unless mounting screws are secured and/or flammable products and materials should in wall studs. never be stored in the v
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Installation Instructions MOUNTING THE WATER HEATER (cont.) MOUNTING THE WATER HEATER (cont.) 4 FINISHED WALLS (Drywall) Option 1: ON MASONRY OR CEMENT WALL: Mount Mount boards over drywall directly to studs 4 wall anchors (not supplied) in a wall suitable in the wall. When attaching the unit to a finished to carry 200 lbs minimum tensile load each. wall, mount two boards suitable for anchoring Level the unit during installation. to wall studs. Level the unit during installation. IMPORTANT: Anch
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Installation Instructions CONNECTING THE WATER HEATER TO GAS AND WATER 1 GAS PIPING 1 GAS PIPING (cont.) GENERAL INSTRUCTIONS PIPE SIZING PROCEDURE • Make sure gas supply is off prior to making The gas supply to the home must be capable any connections to the water heater. A manual of handling the entire gas load of the home, gas control valve, provided with this water calculated by adding the BTU rating of each gas heater, must be placed in the gas supply line appliance in the home. State and l
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Installation Instructions CONNECTING THE WATER HEATER 2 TO THE GAS SUPPLY Connect the gas supply to the system following state and local plumbing codes. Use the supplied ball valve at the inlet to the system. Make sure the gas supply line to the water heater fits in the diagram shown on page 9. This is essential if a pipe cover accessory (model number AGTPCM) is to be installed. IMPORTANT: Use a pipe wrench to securely hold on to the end of the water heater gas inlet to prevent twisting the inle
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Installation Instructions CONNECTING THE WATER HEATER TO GAS AND WATER (cont.) 3 WATER PIPING 3 WATER PIPING (cont.) GENERAL INSTRUCTIONS PRESSURE RELIEF VALVE (cont.) • The water supply should be shut off while • The relief valve must be rated up to 150 psi and connecting the water heater. Make sure the to at least the maximum BTU/hr of the appliance. water inlet and outlet lines to the water heater fit • The discharge from the pressure relief valve in the diagram shown on page 9. A manual wate
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Installation Instructions CONNECTING THE WATER HEATER SUPPLEMENTAL FREEZE PROTECTION TO THE WATER SUPPLY If the unit is installed in an environment that can freeze, follow state and local codes and apply heat trace to ALL water pipe and fittings located outside (attic, crawl space or building structure). It is highly recommended in areas where freezing temperatures occur to install automatic drain Hot Outlet Shut Off Valve valves that work in the event of a power loss. Refer to the diagram in th
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Installation Instructions RECOMMENDED PIPING FOR BASIC INSTALLATION NOTE: If unit is installed in an environment that can freeze, follow state and local codes and apply heat trace to ALL water pipes and fittings located outside (attic, crawl space or building structure). KEY This is not an engineered drawing; it is intended only as a guide and not as a replacement for professionally engineered project drawings. This 3/4″ Ball Valve Pressure Relief Valve drawing is not intended to describe a comp
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Installation Instructions FREEZE PROTECTION FOR EXTERNAL PIPING IMPORTANT! With electrical power supplied to the water heater, it will not freeze in environments as cold as -30°F, when protected from direct wind exposure. In the event of a power failure at temperatures below freezing, the water heater should be drained of all water to prevent freezing damage. The unit may be drained manually, or through the installation of the optional solenoid valves as shown. The unit may be drained manually;
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Installation Instructions ELECTRICAL CONNECTION INFORMATION WARNING – To reduce the risk of fire, electrical shock and personal injury: • Do not use an extension cord or an adapter plug with this appliance. • The water heater must be electrically grounded in accordance with local codes and ordinances or, in the absence of local codes, in accordance with the NATIONAL ELECTRICAL CODE, ANSI/NFPA NO. 70, or the CANADIAN ELECTRICAL CODE, CSA C22.1. ELECTRICAL REQUIREMENTS This appliance must be suppl
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Installation Instructions VENTING INSTRUCTIONS VENTING INSTRUCTIONS (cont.) Refer to the specific instructions on your vent MAXIMUM VENT LENGTH product for additional installation requirements. Maximum System performance is achieved at a vent length of 21 equivalent feet or less. The CONDENSATE system is capable of 41 equivalent feet vent length Regions of cold climate will create more if required, but this reduces system performance. condensate in the vent system. For vent length calculation, a
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Installation Instructions VENTING INSTRUCTIONS (cont.) FLUE INSTALLATION – CONCENTRIC VENTING To adjust the condensate collector position: Bracket 1 Loosen the 4 screws at the rear bracket. 2 Slide the bracket away from the female vent top. 3 Remove the 4 screws attaching the female vent top to the water heater. 4 Lift up the female vent top and reposition as desired (or replace with a male vent top). 5 Install the 4 screws at the vent top and tighten Secure the first vent component to the water
