Lochinvar GAS HEATER FOR COMMERICAL POOL APPLICATIONS Terminal Strip Connection Options, Table-M

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Installation and Service Manual

Figure 39 - Control Panel Component Location Drawing

TABLE-M

Remote Wire Connection

Wire

Maximum

Gauge

Allowable Length

12 GA

100 ft

14 GA

75 ft

16 GA

50 ft

18 GA

30 ft

 

 

TABLE–N

Terminal Strip Connection Options

The scenarios shown in Figures 40 A - C represent typical terminal strip connection requirements. The terminal strips are located on the left side of the pool heater under the electrical access panel. Other applications may be accommodated, but must be addressed individually.

Figure 40-A shows the position of the jumpers as shipped from the factory for stand-alone operation of the pool heater.

Figure 40-B shows connections to the terminal strip for Remote ON/OFF control of the pool heater. The 1C-1NO jumper must be removed when making these wiring connections. This remote ON/OFF control will provide an Enable/Disable signal to the pool heater and allow the pool heater to operate based on the set point, until the remote ON/OFF signal is cancelled. If the remote ON/OFF control is

also an external pool temperature control, adjust the pool heater’s pool return set point a few degrees higher than the external pool temperature control’s set point. The pool heater temperature control will then act as a backup to the external pool temperature control.

Figure 40-C shows the Continuous and Intermittent terminals. External safety devices connected to these terminals will function to protect the pool heater. Devices connected to the Intermittent terminals (B1 and B2) are monitored only when there is an active Call for Heat. Devices connected to the Continuous terminals (A1 and A2) are monitored continuously and will activate and alarm (if the pool heater is equipped with the alarm option) anytime the safety device senses an abnormal condition. An additional wire may be field installed from these safety devices to terminals A3 or B3 (as appropriate) to activate an audible alarm (if the pool heater is equipped with the alarm option).

A.

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Contents GAS Heaters for Commercial Pool Applications Commercial Pool Heaters Unpacking General Product InformationCommercial Pool Heaters Product Identification Base for Combustible Floors Clearances from Combustible ConstructionCombustion Air Filter Freeze ProtectionCombustion Air Options InstallationCombustion Air from Interior Space Exhaust FansVenting Support General InformationVertical Vent Termination Clearances and Location Table B Sidewall Vent Termination Clearances and LocationLength of Air Inlet Pipe Combustion Air Inlet PipingSidewall Air Inlet Combined Air Inlet Points Vertical Rooftop Air InletConventional Negative Draft Venting Vent System OptionsNegative Draft Flue Outlet Piping Masonry Chimney InstallationsCommon Venting Systems Inspection of a Masonry Chimney Vertical DirectAire VentingSidewall Venting Vent KitsVenting of Flue Products Sidewall Venting Termination Sidewall FanSidewall Venting Without Fan Masonry Chimney Installation TABLE-E Horizontal DirectAire VentingDirect 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 Vertical Rooftop Air Inlet Combined Combustion Air Inlet PointsOutdoor Vent/Air Inlet Location Outdoor Installation Venting3-Way Valve Cover Installation Combustion Air Fan Adjustment for startupGas Pressure Test Outdoor Vent Cap KitGas Piping Connecting Gas Piping to the Pool HeaterGas Train and Controls Venting of Combination Gas Valves Combination Gas ValvesChecking Gas Supply Pressure TABLE-JTable K Multiple Unit Installations Gas Supply Pipe SizingMeasuring Net Manifold Gas Pressure Gas Manifold Pressure AdjustmentPumped Automatic Bypass Auxiliary Mixed Water Limit ControlWay 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 TABLE-M Terminal Strip Connection OptionsLighting Instructions OperationTo Turn Off Gas To Pool Heater Pre-Start ChecklistStarting the Filter System Operation Error Messages Displayed by the Temperature Controller Programming ModeHot Surface Igniter and Ignition Control Module Diagnostic Status IndicationHot Surface Ignition Control Module Ignition Module Lockout FunctionsTABLE-N Access to Internal Control PanelIgnition and Control Timings TABLE-O Water ChemistryTest Recommended Level TABLE-PCirculating Pump Pipe Size RequirementsMinimum Pump Performance Heat ExchangerFlue Gas Passageways Cleaning Procedures High Water Temperature Limit ControlAppliance Area Water Circulating PumpHeat Exchanger Cleaning Burner Removal and CleaningElectrical Combustion and Ventilation AirFan Cleaning Adjusting Differential Air PressureCombustion Air Fan Adjustment 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 View Menu Item Menu Description Appendix B