149-50230-1 03-08 JRInstallation Outdoor Tankless Water HeaterInstructionsModels GN75ENSRSA, GN94ENSRSA, GP94ENSRSAQuestions? Call 888-HOTWTER (888.46
GAS PIPING (cont.)PIPE SIZING PROCEDUREThe gas supply to the home must be capableof handling the entire gas load of the home,calculated by adding the
Installation Instructions11CONNECTING THE WATER HEATERTO THE GAS SUPPLY2Connect the gas supply to the system followingstate and local plumbing codes.
12Installation InstructionsWATER PIPINGGENERAL INSTRUCTIONS• The water supply should be shut off whileconnecting the water heater. Make sure thewater
13Installation InstructionsCONNECTING THE WATER HEATERTO THE WATER SUPPLYWater connections to the tankless water heatershould follow all state and loc
14Installation InstructionsRECOMMENDED PIPING FOR BASIC INSTALLATIONThis is not an engineered drawing; it is intendedonly as a guide and not as a repl
FREEZE PROTECTIONFOR EXTERNAL PIPINGIMPORTANT!With electrical power supplied to the waterheater, it will not freeze in environments ascold as -30°F, w
Installation InstructionsELECTRICAL CONNECTIONINFORMATIONWARNING – To reduce the riskof fire, electrical shock and personal injury:The water heater mu
CASCADING MULTIPLE WATER HEATERSThe Dual Connect Cable Kit (AGTDC1) is an optionalaccessory that connects 2 water heaters and allowsthem to function a
REMOTE CONTROLLER INSTALLATIONLOCATION• The controller shouldbe out of reach of smallchildren.• Avoid locations wherethe controller maybecome hot (nea
REMOTE CONTROLLER INSTALLATION (cont.)MOUNTING THE CONTROLLER (cont.)Thread the cable through the access hole at the baseof the unit and connect the w
Installation Instructions2SAFETY PRECAUTIONS (cont.)WARNING: Gasoline, as wellas other flammable materials and liquids(adhesives, solvents, paint thin
20Installation InstructionsTECHNICAL DATAPRESSURE DROP CURVEOUTLET FLOW DATAGN75GN94/GP94GN75GN94/GP94
LADDER DIAGRAM21Installation Instructions
22Notes
24Notes
3Installation InstructionsTOOLS YOU WILL NEED• Pipe Wrenches (2) • Gloves• Adjustable Pliers • Safety Glasses• Screwdrivers (2)• Wire CuttersMATERIALS
DIMENSIONSGN75/GN94/GP94ENSRSADIM. DESCRIPTION IN. (MM)A Width 14 (355.6)B Depth 913⁄16 (249.5)C Height – Unit 227⁄8 (582)D Height – with brackets 253
5Installation InstructionsFLUE TERMINAL CLEARANCESU.S. INSTALLATIONSCLEARANCES PERREF DESCRIPTION ANSI Z21.10.3A Clearance above grade, veranda, porch
6Installation InstructionsFLUE TERMINAL CLEARANCES (ANSI Z21.10.3 • CSA 4.3)FIXEDCLOSEDOPERABLEFIXEDCLOSEDOPERABLEBBBAJBIMCFBBEDLGAHKVENT TERMINAL AIR
Installation Instructions7PLANNING FOR PLUMBING(shown with optional pipe cover)The center of the pipes can be placed anywherewithin the shaded area. T
Installation Instructions8MOUNTING THE WATER HEATER (cont.)Identify the installation location and confirmthat the installation will meet all requiredc
MOUNTING THE WATER HEATER (cont.)ON MASONRY OR CEMENT WALL: Mount4 wall anchors (not supplied) suitable tocarry 200 lbs minimum tensile load each.Leve
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