Direct Vent Tankless Water Heater - Alpine Home Air Products

Electrical ConnectionThe water heater requires 120 VAC, 60 Hz power from a properly grounded circuit.If using the 6 foot long power cord, plug it into a standard 3 prong 120 VAC, 60 Hz properly grounded wall outlet.The wiring diagram is located on the Technical Sheet attached to the inside of the front cover.The water heater must be electrically grounded in accordance with local codes, or in the absence of local codeswith the National Electrical Code, ANSI/NFPA 70 and/or the CSA C22.1, Canadian Electrical Code.Error Indication or Air Handler Control Switch (R75LSi, and R94LSi only)When using the Rinnai water heater with an Error Indication Switch, switch No. 4 in the bank of 8 switches shouldbe in the off position. This is the default position.To connect the water heater to the Rinnai Air Handler, the Control Switch is necessary to function as the electricalconnection. When the Control Switch is functioning as the electrical connection between the water heater and airhandler, switch No. 4 in the bank of 8 switches should be in the on position.The Error Indication Switch and the Rinnai Air Handler Control Switch are optional products available from Rinnai.Installation instructions are included with these products.Gas PipingGeneral Instructions• A manual gas control valve must be placed in thegas supply line to the Rinnai water heater. A unioncan be used on the connection above the shut offvalve for the future servicing or disconnection of theunit.• Check the type of gas and the gas inlet pressurebefore connecting the Rinnai water heater. If theRinnai water heater is not of the gas type that thebuilding is supplied with, DO NOT connect the waterheater. Contact the dealer for the proper unit tomatch the gas type.• Check the gas supply pressure immediatelyupstream at a location provided by the gascompany. Supplied gas pressure must be within thelimits shown in the Specifications section.• Before placing the appliance in operation all jointsincluding the heater must be checked for gastightness by means of leak detector solution, soapand water, or an equivalent nonflammable solution,as applicable. (Since some leak test solutions,including soap and water, may cause corrosion orstress cracking, the piping shall be rinsed with waterafter testing, unless it has been determined that theleak test solution is non-corrosive.)• Always use approved connectors to connect the unitto the gas line. Always purge the gas line of anydebris before connection to the water heater.• The gas supply line shall be gas tight, sized, and soinstalled as to provide a supply of gas sufficient tomeet the maximum demand of the heater and allother gas consuming appliances at the locationwithout loss of pressure.• Any compound used on the threaded joint of the gaspiping shall be a type which resists the action ofliquefied petroleum gas (propane / LPG).• Refer to an approved pipe sizing chart if in doubtabout the size of the gas line.VB Series Indoor LS Manual 19