Raypak 0133-4001 WH, NH manual Plumbing, General, GAS Supply Connections

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PLUMBING

GENERAL

Heater should be located so that any water leaks will not cause damage to any adjacent areas or struc- tures.

GAS SUPPLY CONNECTIONS

Gas piping must have a sediment trap ahead of the heater gas controls, and a manual shut-off valve located outside the heater jacket. All gas piping should be tested after installation in accordance with local codes.

Fig. # 8090.1

CAUTION: The heater and its manual shut-off valve must be disconnected from the gas supply during any pressure testing of that system at test pressures in excess of 1/2 PSI. Dissipate test pressure in the gas supply line before reconnecting the heater and its manual shut-off valve to gas supply line. FAILURE TO FOLLOW THIS PROCEDURE MAY DAMAGE THE GAS VALVE. OVER-PRESSURED GAS VALVES ARE NOT COVERED BY WARRANTY. The heater and its gas connections shall be leak tested before placing the appliance in operation. Use soapy water for leak test. DO NOT use open flame.

NOTE: Do not use Teflon tape on gas line pipe thread. A flexible sealant is recommended.

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Contents For Your Safety Installation Operating InstructionsTable of Contents Receiving Equipment ALL Models Approved General SpecificationsModel Identification HOT Water Supply HeatersGeneral Safety Precautions Installation Codes Installation InstructionsClearances Model Specifications and DimensionsModels Models High Wind Conditions Outdoor Units Only Outdoor Water HeatersVenting Outdoor InstallationsBefore After Installation Drafthood Indoor InstallationsVent TERMINAL/INDOOR Stack Installation Fig. #7043.1 Vent PipingModels 133 Through 261 Where Required Location Vent Damper InstallationVent Damper GAS Supply Connections PlumbingGeneral Venting of Diaphragm GAS Components GAS Pressure RegulatorFlow Rates Piping Domestic HOT Water Supply Heaters General Specifications UNI-TEMP 80 HOT Water Supply SystemsPiping Diagrams Type WH Unitemp 80 System Type NH Instantaneous Type NH Dual Models Minimum Input AdjustmentRelief Valve Controls GeneralElectronic Ignition Economaster Control100% Pilot Safety Flow SwitchHigh and LOW GAS Pressure Switches Optional Limit Controls High LimitComponent Identification ON/OFF Units Electrical ConnectionsSINGLE-STAGE Tankstat Location of Controls 400 WH1, WH2, WH3 LOW NOx WH1Fig. #9334 Initial START-UP Pump and Motor START-UP Procedures Before START-UPScalding TIME/TEMPERATURE Relationships in ScaldsOperating Instructions For Your Safety Read Before OperatingTo Turn OFF GAS to Appliance For Models with Manual GAS ValvesAfter START-UP Inspection Procedures BurnersControls For Models with Automatic GAS ValvesInspection Procedures High GAS Pressure Switch Burner AdjustmentSTART-UP Procedures Visual InspectionPilot Removal Burner Tray RemovalGAS Valve Removal Main Burner and Orifice RemovalHoneywell S8600 Troubleshooting ElectricalWiring Diagrams Wiring Diagram WH2 182/260 Wiring Diagram WH2 330/400 Wiring Diagram WH2 514/624 Wiring Diagram WH2 Wiring Diagram WH2 Wiring Diagram WH2 Wiring Diagram WH2 Wiring Diagram WH1 181/261 LOW NOx Wiring Diagram WH1 331/401 LOW NOx Mechanical Problem Possible Cause Corrective Action TroubleshootingTube Cleaning Troubleshooting PumpsService and Maintenance Procedures High Limit or Tankstat Removal Pilot Removal and CleaningHeat Exchanger Removal Typical Burner Tray IllustratedTube Replacement Heat Exchanger RE-ASSEMBLYControl Well Replacement Catalog Model Number Cleaning Flue GAS PassagewaysReplacement Parts Scope Warranty