Lochinvar GAS HEATER FOR COMMERICAL POOL APPLICATIONS Clearances from Combustible Construction

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Commercial Pool Heaters

INSTALLATION

This pool heater meets the safe lighting performance criteria with the gas manifold and control assembly provided, as specified in the ANSI Z21.10.3/CSA 4.3 standard for gas-fired water heaters.

LOCATING POOL HEATER

1.Maintain all clearances from combustible construction when locating pool heater. See Clearances from Combustible Construction, this page.

2.Locate the pool heater so that if water connections should leak, water damage will not occur. When such locations cannot be avoided, install a suitable drain pan that is well- drained under the pool heater. The pan must not restrict combustion air flow. The pool heater manufacturer is not responsible for water damage in connection with this pool heater, or any of its components.

3.Install the indoor pool heaters so that the ignition system components are protected from any water while operating or during service.

4.You must install the pool heater on a level, non- combustible floor.

5.Do not install pool heater directly on carpet or other combustible material. A concrete-over-wood floor is not considered non-combustible. Maintain required clearances from combustible surfaces.

If installing the pool heater in an area with a combustible floor, you must construct a special combustible floor base. See Base for Combustible Floors, this page.

6.For outdoor models, you must install an optional vent cap. Instructions for mounting the vent cap are included in the venting section. Do not install outdoor models directly on the ground. You must install the outdoor pool heater on a concrete, brick, block, or other non-combustible pad. Outdoor models have additional special location and clearance requirements. See Outdoor Installation Venting, page 25. A wind proof cabinet protects the pool heater from weather.

Clearances from Combustible

Construction

Maintain minimum specified clearances for adequate operation. Allow sufficient space for servicing pipe connections, pump and other auxiliary equipment, as well as the pool heater. See rating plate for specific service clearance requirements.

Right Side

3"

(7.5 cm)

Rear

3"

(7.5 cm) (3" min. from any surface)

Left Side

6" (15cm) (24" (0.61m) suggested for service)

Front

Alcove* (30" (0.76m) suggested for service)

Top

3" (7.5cm)

Flue

1" (25.4mm)

Hot Water Pipes 1" (25.4mm)

*An Alcove is a closet without a door.

Note: No additional clearance is needed on the right side of the pool heater for the observation port. An observation port is located on both the right and left side of the pool heater.

Note: No additional clearances from combustibles are needed for use of the Direct Vent (DV) air inlet assembly.

Figure 2 – Clearances from Combustible Construction

Base for Combustible Floors

There are no manufactured combustible floor base kits available for 990,000 - 2,070,000 Btu models. See Table-A for floor base kits that are available.

If a manufactured combustible floor base kit is not used, you must construct a base for combustible floor installation. Install the pool heater over a base of hollow clay tiles or concrete blocks from 8" to 12" thick, extending at least 24" beyond the pool heater sides. Place tiles or blocks so that the holes line up horizontally to provide a clear passage through the tiles or blocks. Place a 1/2" fireproof millboard over the top of the tile or block base. Place a 20-gauge sheet metal cover over the fireproof millboard. Center the pool heater on the base. Also follow this procedure if electrical conduit runs through the floor beneath the pool heater. This base must meet all local fire and safety codes.

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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 SpaceGeneral Information Venting SupportVertical Vent Termination Clearances and Location Sidewall Vent Termination Clearances and Location Table BCombustion Air Inlet Piping Length of Air Inlet PipeSidewall Air Inlet Vertical Rooftop Air Inlet Combined Air Inlet PointsVent System Options Conventional Negative Draft VentingNegative Draft Masonry Chimney Installations Flue Outlet PipingCommon Venting Systems Vertical DirectAire Venting Inspection of a Masonry ChimneyVent Kits Sidewall VentingVenting of Flue Products Sidewall Fan Sidewall Venting TerminationSidewall Venting Without Fan Masonry Chimney Installation Horizontal DirectAire Venting TABLE-EDirect Venting Horizontal DV Venting Termination Flue Pipe MaterialsCombustion Air Inlet Piping Length of Air Inlet Pipe Air Inlet Piping MaterialsSealing 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 KitConnecting Gas Piping to the Pool Heater Gas PipingGas 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 Water Flow Switch Relief ValveAutomatic Chlorinator and Chemical Feeders Pump Purge Delay Option Service Indicator OptionWay Automatic Bypass Valve Wiring Terminal Strip Connection Options TABLE-MOperation Lighting InstructionsPre-Start Checklist To Turn Off Gas To Pool HeaterStarting 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 FunctionsAccess to Internal Control Panel TABLE-NIgnition 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 ProcedureAdjustment Procedure Servicing Hot Surface Igniter and Ignition ModuleIgnition 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