Lochinvar GAS HEATER FOR COMMERICAL POOL APPLICATIONS Commercial Pool Heaters Appendix a

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Commercial Pool Heaters

Appendix A

Unit Start Up Checklist

Ensure that the location and installation of the equipment is in accordance with the installation manual, all local installation requirements, and with the latest edition of the National Fuel Gas Code, ANSI 223.1 and/or CAN/CGA-B149 Installation Code.

1.Measure the supply gas pressure. For natural gas models, the supply gas pressure should be between 4.5" w.c. to 10.5" w.c. For LP gas models, the supply gas pressure should be between 8" w.c. to 13" w.c. For a detailed procedure on measuring the supply gas pressure, reference page 28 of this manual.

2.Measure the differential air pressure. The differential air pressure for the 500,000 - 750,000 Btu/hr models should be between 1.5" w.c. to 1.65" w.c. The differential air pressure for 990,000 - 2,070,000 Btu/hr models should be between 1.1" w.c. to 1.3" w.c. Reference pages 49 and 50 of this manual for the proper procedure for measuring the differential air pressure. If an adjustment is necessary follow the procedure on page 50 of this manual.

Note: The combustion air fan(s) is factory preset and should not need adjustment. However, due to installation and environmental conditions adjustment of the air fan shutter(s) may be necessary at start up.

3.Measure the net manifold gas pressure. For 500,000 - 750,000 Btu/hr models the net manifold gas pressure for natural gas models should be 1.8" w.c For LP gas models the net manifold gas pressure should be 4.6" w.c. For 990,000 - 2,070,000 Btu/hr models the net manifold gas pressure for natural gas models should be 1.2" w.c. For LP gas models the net manifold gas pressure should be 4.6" w.c. For the proper procedure for measuring net manifold gas pressure, reference page 30 of this manual. If an adjustment of the net manifold gas pressure is necessary, follow the procedure on page 30 of this manual.

Note: The gas valves are factory preset and should not need adjustment. However, due to installation and environmental conditions adjustment of the gas valves may be necessary for start up.

4.For negative draft vent systems, measure the draft in the vent stack. The negative draft should be between -.02 w.c. to -.08 w.c. Reference pages 10 - 26 of this manual to determine which venting system is in use.

Note: For positive pressure venting systems a draft measurement is not required. Ensure that the vent length does not exceed the maximum lengths listed in the Installation and Service Manual.

5.Adjust the temperature set point on the digital temperature control to the desired pool temperature. Reference pages 40 and 41 of this manual for information regarding the operation and adjustment of the digital temperature control.

6.A 3-way automatic bypass valve is factory installed to maintain a minimum temperature of 130° to the inlet of the pool heater to protect against flue gas condensation. Manual adjustment of the valve is not required.

Note: If the inlet temperature of the pool heater can not be maintained at 130°, reference pages 33, 34, and 46 of this manual to ensure that the pipe size and piping arrangements are correct.

If problems arise during the start up, reference the Installation and Service Manual and/or consult the factory.

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Contents GAS Heaters for Commercial Pool Applications Commercial Pool Heaters General Product Information UnpackingCommercial Pool Heaters Product Identification Clearances from Combustible Construction Base for Combustible FloorsFreeze Protection Combustion Air FilterInstallation Combustion Air OptionsExhaust Fans Combustion Air from Interior SpaceVenting Support General InformationVertical Vent Termination Clearances and Location Sidewall Vent Termination Clearances and Location Table BLength of Air Inlet Pipe Combustion Air Inlet PipingSidewall Air Inlet Vertical Rooftop Air Inlet Combined Air Inlet PointsConventional Negative Draft Venting Vent System OptionsNegative Draft Flue Outlet Piping Masonry Chimney InstallationsCommon Venting Systems Vertical DirectAire Venting Inspection of a Masonry ChimneySidewall Venting Vent KitsVenting of Flue Products Sidewall Venting Termination Sidewall FanSidewall Venting Without Fan Masonry Chimney Installation Horizontal DirectAire Venting TABLE-EDirect Venting Flue Pipe Materials Horizontal DV Venting TerminationCombustion Air Inlet Piping Air Inlet Piping Materials Length of Air Inlet PipeSealing Type-B Doublewall Vent Pipe or Galvanized Vent Pipe Combined Combustion Air Inlet Points Vertical Rooftop Air InletOutdoor Installation Venting Outdoor Vent/Air Inlet LocationGas Pressure Test Combustion Air Fan Adjustment for startup3-Way Valve Cover Installation Outdoor Vent Cap KitGas Piping Connecting Gas Piping to the Pool HeaterGas Train and Controls Checking Gas Supply Pressure Combination Gas ValvesVenting of Combination Gas Valves TABLE-JMultiple Unit Installations Gas Supply Pipe Sizing Table KGas Manifold Pressure Adjustment Measuring Net Manifold Gas PressureAuxiliary Mixed Water Limit Control Pumped Automatic BypassWay Valve Cover Heater is Within 15 Feet of Pool Piping Heaters are within 15 feet Perpendicular of Pool Piping Relief Valve Water Flow SwitchAutomatic Chlorinator and Chemical Feeders Service Indicator Option Pump Purge Delay OptionWay Automatic Bypass Valve Wiring Terminal Strip Connection Options TABLE-MOperation Lighting InstructionsTo Turn Off Gas To Pool Heater Pre-Start ChecklistStarting the Filter System Operation Programming Mode Error Messages Displayed by the Temperature ControllerHot Surface Ignition Control Module Diagnostic Status IndicationHot Surface Igniter and Ignition Control Module Ignition Module Lockout FunctionsTABLE-N Access to Internal Control PanelIgnition and Control Timings Water Chemistry TABLE-OTABLE-P Test Recommended LevelMinimum Pump Performance Pipe Size RequirementsCirculating Pump Heat ExchangerAppliance Area High Water Temperature Limit ControlFlue Gas Passageways Cleaning Procedures Water Circulating PumpElectrical Burner Removal and CleaningHeat Exchanger Cleaning Combustion and Ventilation AirCombustion Air Fan Adjustment Adjusting Differential Air PressureFan Cleaning Set-Up ProcedureServicing Hot Surface Igniter and Ignition Module Adjustment ProcedureIgnition System Checkout Sequence of Operation Glossary Prepurge Wiring BOX Connections Wiring BOX Connections Ladder Diagram Control BOX Connections Commercial Pool Heaters Appendix a Appendix B View Menu Item Menu Description
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