Tankless Water Heater - Waiwela

Installing the Main Remote Control:WARNING: Do not attempt to convert this water heater for use with a different type of gas other than the type shownon the rating plate. Such conversion could result in hazardous operating conditions.Gas SupplyManualGasSupplyLineShutoff(Valve)Manual GasApplianceShutoff(Supplied)UnionSediment TrapCapThe supplied Manual Gas Appliance ShutoffValve must be installed at the gas connection ofthe water heater at the time of installation (seediagram to the left).The branch gas supply line to the water heatershould be a minimum of 3/4” black steel pipeor other approved gas piping material.A ground joint union or ANSI design certifiedsemi-rigid or flexible gas appliance connectorshould be installed in the gas line close to thewater heater. The National Fuel Gas Code(NFGC) ANSI Z223.1 and CAN B149 codemandates a manual gas shut-off valve: SeeNFGC & B149 for complete instructions.If flexible connectors are used, the maximumlength shall not exceed 36” (91 cm).If lever type gas shut offs are used, they shallbe T-Handle type.Compound used on the threaded joints of thegas piping must be of the type resistant to theaction of LP gas. Use compound sparingly onmale threads only.A sediment trap should be installed at thebottom of the gas line.Do not use excessive force (over 31.5 ft lbs.[42.7 Nm]) in tightening the pipe, particularly ifteflon pipe compound is used, as the unit maybe damaged.The inlet gas pressure to the water heater mustnot exceed 10.5” w.c. (2.6 kPa) for natural or14” w.c. (3.5 kPa) for LP gas. For purposesof input adjustment, the minimum inlet gaspressure (with main burner on) is shown onthe water heater rating plate. If high or low gaspressures are present, contact your gas supplierfor correction.NOTICE: To ensure proper operation of theheater the gas pipe and gas meter must be sizedcorrectly.Gas piping shall be in accordance with local,utility company requirement and/or in theabsence of local codes, use the latest edition ofthe National Fuel Gas Code. In Canada, the latestedition of CSA B149.1 Natural Gas and Propaneinstallation code.WARNING: Never usean open flame to test forgas leaks, as propertydamage, personal injury,or death could result.Leak TestingThe water heater and its gas connections mustbe leak tested at normal operating pressuresbefore it is placed in operation.Turn on the gas shut-off valve(s) to thewater heater.Use a soapy water solution to test forleaks at all connections and fittings.Bubbles indicate a gas leak that mustbe corrected.The factory connections should also be leaktested after the water heater is placed inoperation.WARNING: Install a gaspressure regulator, in thegas supply line, which doesnot exceed the maximumsupply pressure.DO NOT use an industrialtype gas regulator.18Pressure Testing the Gas Supply SystemThe water heater and its manual gas shutoffvalve must be disconnected from the gassupply piping system during any pressuretesting of the system at pressures in excessof 1/2 psi (14” w.c. [3.5 kPa]).High AltitudeThis water heater is certified for installationsup to 3,280 feet (1000 m) above sea level.The input rating of this water heater is basedon sea level operation. At higher elevations,the actual input rate may be lower than thevalue listed on the rating label.NOTICE: For installations above 3,280feet (1,000 m) elevation, contact a quailifiedservice technician to make the properaltitude adjustment. See page 35 for additionalinformation.The water heater must be isolated from thegas piping system by closing the manual gasshut-off valve during any pressure testing ofthe gas supply piping at pressures equal to orless than 1/2 psi (14” w.c. [3.5 kPa]).Do not install this water heater at elevationsabove 3,280 feet (1,000 m) withoutthe proper adjustement. Please contactyour installer, local gas supplier, place ofpurchase or the Customer Service phonenumber as listed in this Use & Care Manualfor more information.AP14558-1 (09_08) DV 66 Manual.indd 189/17/2008 3:08:00 PM