Raypak P-2100, P-1826, P-4001, P-926 manual Winterizing Your Heater

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Winterizing Your Heater

Winterizing Your Heater

When heaters installed outdoors in freezing climate areas are to be shut down for the winter, please observe the following step-by-step procedure:

1.Remove the drain plug or open the drain cock located on the inlet-outlet header. On larger heaters with external Unitherm Governor(s) and piping, locate plug at low point of Governor piping, or break connections and rotate inlet fittings 180 degrees to face downward. Turn off manual main gas and main gas shut off.

2.Disconnect compression fittings on both ends of the 1/8" copper tube and allow the tube to drain. Remove the "heat exchanger inspection panels" on the right side of the heater to gain access to the fitting on the return header. Remove return head- er.

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Contents Raytherm Commercial Swimming Pool Heater INSTALLATION & OPERATING INSTRUCTIONSModels P-926to P-1826 & P-2100to P-4001 Corrosive water voids all warranties CONTENTS Pay Attention to These Terms WARNINGSDANGER Code Requirements RECEIVING EQUIPMENT INSTALLATIONGENERAL SPECIFICATIONS Base InstallationOutdoor Heaters ClearancesCombustion Air Indoor Units Only Indoor HeatersDrafthood Indoor Models Venting ConnectionsVent Piping Gas Pressure Regulator Gas Supply Connections1-1/2” Venting of Diaphragm Gas ComponentsModel 1-1/4”CONTROLS Flow SwitchWater Connections Companion Flange Connections Models Water Pressure SwitchAutomatic Chlorinators and Chemical Feeders Unitherm Governor OperationModel No. Loop* Flow Rates Heater Flow Model NoConnection Minimum2.Lace metal strapping or clamps, NOT PROVID- ED through the ¾” slots on the cover and fasten securely to pipe as shown in Fig. 15 & 16. Do not over-tightenclamps HEATER Models 0926 thru 1223 with UG THERMOMETERATHEATERINLET RECOMMENDED FIELD INSTALLEDISOLATION VALVESFORSERVICE BLENDEDWATER TEMPERATUREHEATEROUTLETTEMPERATURETHERMOMETER Models 2100 thruTemperature Controls External Auxiliary Bypass Valve Where RequiredAuxiliary Bypass Valve Adjustment 926-1223Models OnlyElectronic Ignition Electrical WiringHigh & Low Gas Pressure Switches Low Water CutoffWiring Diagram-Models Wiring Diagram-Models Wiring Diagram-Models Wiring Diagram-Models General Location Of Controls Pressure SwitchPressure Switch Adjustment SERVICINGBefore Start-Up START-UP PROCEDURESPilot Safety Two-SpeedPumpsAfter Start-Up INSPECTION PROCEDURESBurners Gas Valve Removal SERVICING PROCEDURESTube Cleaning Procedure Typical Burner Drawer RemovalHeat Exchanger Removal Pilot Removal and CleaningHeat Exchanger Reassembly Main Burner and Orifice RemovalCombustion Chamber Removal Control Well ReplacementTube Replacement Procedure Procedure For Cleaning Flue Gas PassagewaysINLET/OUTLET HEADER OUTLET INLET GASKET MAINTENANCE AND CAREUnitherm Governor Replacement UNITHERM GOVERNOR WITH POWER ELEMENTWinterizing Your Heater MECHANICAL FOR QUALIFIED SERVICE PERSONNEL ONLY TROUBLESHOOTINGIMPORTANT NOTICE Refer to installation instructions or refer to heater sizing chartReset time clock Clean filterSTART TROUBLESHOOTING HONEYWELL S8600Intermittent Pilot System ELECTRICAL ELECTRONIC IGNITION IID IIDPARTS REPLACEMENT LIMITED WARRANTY RAYTHERM TYPE P SIZESHEAT EXCHANGER WARRANTY ADDITIONAL WARRANTY EXCLUSIONS