Direct Vent Tankless Water Heater - Alpine Home Air Products

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Pressure Drop CurveTechnical DataR98LSiR98LSi-ASMER94LSiR75LSiPressure Loss (psi)Pressure Loss (ft head)Outlet Flow Data0.09.0 R94LSi<strong>Water</strong> Flow (gpm)R98LSiR98LSi-ASME<strong>Water</strong> Flow (gpm)8.07.06.05.04.03.02.01.00.0R75LSi0 25 50 75 100 125 150delta T - Temperature Rise (ºF)40 VB Series Indoor LS Manual
Space HeatingIf the water heater is to be used for both water (potable) heating and space heating then the following apply.• The piping and components connected to the water heater shall be suitable for use with potable water.• Toxic chemicals, such as used for boiler treatment, shall not be introduced into the potable water.• The water heater shall not be connected to any heating system or components previously used with anonpotable water heating appliance.• When the system requires water for space heating at temperatures higher than required for other uses, ameans such as a mixing valve shall be installed to temper the water for other uses in order to reduce thescald hazard potential.Space heating applications are considered commercial applications for warranty purposes.Temperature SettingWhen using this appliance to provide domestic hot water it is recommended that the domestic hot watertemperature be reduced to acceptable temperatures in accordance with local codes. In the absence of localcodes it is recommended that the domestic hot water temperature be set to 140º F (60º C) or lower in accordancewith UPC 501.6 by using mixing valves or the temperature controller for the water heater.PumpsOnly use pumps of brass or stainless steel construction. Do not use pumps of iron construction as they willoxidize and clog the inlet filter on the appliance.Pumps circulating water through the water heater must be sized to overcome the pressure loss through the waterheater, the heating system, and any additional plumbing pressure losses. The pressure drop curve based on thewater heater model is provided in this manual.ReplacementWhen replacing an existing space heating application’s water heating source (boiler, tank water heater, tanklesswater heater, etc.) with Rinnai water heaters, ensure that the water heaters are sized to adequately provide thenecessary BTU input for the desired space heating application. Rinnai water heaters are designed to maintain aconstant outlet temperature and will supply only the necessary amount of BTU’s to maintain that temperature.Depending on the application the maximum BTU rating of the unit may not be achieved. Contact Rinnai’sApplications Engineering Department for assistance at (800) 621-9419 ext. 4490.Iron ComponentsDo not use Rinnai water heaters directly for space heating applications involving iron radiators or applications withany iron components. Iron components may oxidize creating rust that will clog the inlet filter of the Rinnai waterheater.VB Series Indoor LS Manual 41
Page 1 and 2: Direct Vent Tankless Water HeaterOp
Page 3 and 4: SpecificationsModel R75LSi R94LSi R
Page 5 and 6: Operating InstructionsThe MC-91 tem
Page 7 and 8: Temperature Controllers - ModelsDim
Page 9 and 10: Temperature Controller Settings* Re
Page 11 and 12: Using the Water Smart / Bath Fill F
Page 13 and 14: Error CodesThe Rinnai water heater
Page 15 and 16: Trouble Shooting for Common IssuesI
Page 17 and 18: Only properly trained and qualified
Page 19 and 20: Electrical ConnectionThe water heat
Page 21 and 22: Water PipingGeneral Instructions•
Page 23 and 24: Freeze Protection PipingNOTICEWarra
Page 25 and 26: Recommended Piping for Circulation
Page 27 and 28: Venting InstructionsIntake / Exhaus
Page 29 and 30: Vent ProductsListed and Tested Vent
Page 31 and 32: Additional Clearances - Vent Termin
Page 33 and 34: Flue Installation (R98LSi, R98LSi-A
Page 35 and 36: Connecting Multiple Water HeatersTh
Page 37 and 38: Temperature Controller Installation
Page 39: Operating InstructionsFOR YOUR SAFE
Page 43 and 44: Ladder Diagram (for R75LSi and R94L
Page 45 and 46: Warranty InformationConsumer Suppor
Page 47 and 48: State RegulationsNOTICE BEFORE INST
Page 49 and 50: Comportements et pratiques de sécu
Page 51 and 52: EntretienAVERTISSEMENTCoupez l'alim
Page 53 and 54: Écartements par rapport à l'appar
Page 55 and 56: Tuyauterie d'eauInstructions géné
Page 57 and 58: Instructions de ventilationConsigne
Page 59 and 60: Produits de ventilationProduits de
Page 61 and 62: Installation de conduit de cheminé
Page 63 and 64: Installation de conduit de cheminé
Page 65 and 66: Diagramme en escalier (R75LSi, R94L
Page 67 and 68: Informations sur la garantieSupport
Page 69 and 70: NotesVB Series Indoor LS Manual 69
Page 71 and 72: NotesVB Series Indoor LS Manual 71

Direct Vent Tankless Water Heater - Alpine Home Air Products

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