Lochinvar GAS HEATER FOR COMMERICAL POOL APPLICATIONS service manual Commercial Pool Heaters

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Commercial Pool Heaters

Table of Contents

 

General Product Information

. . .3

Special Instructions

. . .3

Unpacking

. . .3

Codes

. . .3

Warranty

. . .3

Safety Information

. . .3

Product Identification

. . .5

Installation

. . .6

Locating Pool Heater

. . .6

Clearances from Combustible Construction

. . .6

Base for Combustible Floors

. . .6

Freeze Protection

. . .7

Combustion and Ventilation Air

. . .7

Combustion Air Filter

. . .7

Combustion Air Options

. . .8

Exhaust Fans

. . .9

Venting

. .10

General Information

. .10

Venting Support

. .10

Vertical Vent Termination Clearances and Location

. .10

Sidewall Vent Termination Clearances and Location

. .11

Combustion Air Inlet Piping

. .12

Length of Air Inlet Piping

. .12

Sidewall Air Inlet

. .12

Vertical Rooftop Air Inlet

. .13

Combined Air Inlet Points

. .13

Vent System Options

. .14

Barometric Damper Location

. .14

1. Conventional Negative Draft Venting

. .14

2. Vertical DirectAire™ Venting

. .16

3. Sidewall Venting

. .17

4. Horizontal DirectAire™ Venting

. .20

5. Direct Venting

. .21

6. Outdoor Installation Venting

. .25

Connecting to Gas Supply

. .26

Gas Pressure Test

. .26

Gas Piping

. .27

Connecting Gas Piping to the Pool Heater

. .27

Gas Train and Controls

. .27

Combination Gas Valves

. .28

Venting of Combination Gas Valves

. .28

Checking Gas Supply Pressure

. .28

Gas Manifold Pressure Adjustment

. .30

Pool Heater Piping Installation

. .31

Auxiliary Mixed Water Limit Control

. .31

Pumped Bypass

. .31

Outdoor Operation - Outdoor 3-Way Valve Cover . .

. .31

Manual Operation of the 3-Way Valve Actuator . . . . .32

Table of Contents

Relief Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 Water Flow Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 Pump Purge Delay Option . . . . . . . . . . . . . . . . . . . . . .36 Service Indicator Option . . . . . . . . . . . . . . . . . . . . . . . .36 Connecting to Electrical Supply . . . . . . . . . . . . . . . . . . . . .36 3-Way Valve Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . .36 Terminal Strip Connection Options . . . . . . . . . . . . . . .37 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38 Lighting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . .38 To Turn Off Gas To Pool Heater . . . . . . . . . . . . . . . . . .39 Pre-Start Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39 Starting the Filter System . . . . . . . . . . . . . . . . . . . . . . .39 Operating Temperature Control . . . . . . . . . . . . . . . . . .40 Programming Mode . . . . . . . . . . . . . . . . . . . . . . . . . . .41 Error Messages -- Temperature Control . . . . . . . . . . . .41

Hot Surface Ignition System . . . . . . . . . . . . . . . . . . . . . . . .42 Operation and Diagnostic Lights . . . . . . . . . . . . . . . . . . . . .43 Water Chemistry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44 Pipe Size Requirements . . . . . . . . . . . . . . . . . . . . . . . .46 Circulating Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46 Minimum Pump Performance . . . . . . . . . . . . . . . . . . . .46 Heat Exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46 High Water Temperature Limit Control . . . . . . . . . . . .47

Cleaning and Maintenance

.47

Heat Exchanger Cleaning

.48

Combustion and Ventilation Air

.48

Adjusting Differential Air Pressure

.49

Set-Up Procedure

.49

Adjustment Procedure

.50

Servicing Hot Surface Igniter and Ignition Module

.50

Ignition System Checkout

.50

Energy Saving Recommendations

.51

Sequence of Operation

.51

Glossary

.52

Wiring Box Connections

.54

Ladder Diagram

.56

Control Box Connections

.57

Appendix A_Unit Start Up Checklist

.58

Appendix B_Adjust Menu Settings for Operating Modes

.59 . . .

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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 SpaceVertical Vent Termination Clearances and Location General InformationVenting Support Sidewall Vent Termination Clearances and Location Table BSidewall Air Inlet Combustion Air Inlet PipingLength of Air Inlet Pipe Vertical Rooftop Air Inlet Combined Air Inlet PointsNegative Draft Vent System OptionsConventional Negative Draft Venting Common Venting Systems Masonry Chimney InstallationsFlue Outlet Piping Vertical DirectAire Venting Inspection of a Masonry ChimneyVenting of Flue Products Vent KitsSidewall Venting Sidewall Venting Without Fan Sidewall FanSidewall Venting Termination Masonry Chimney Installation Horizontal DirectAire Venting TABLE-EDirect Venting Combustion Air Inlet Piping Horizontal DV Venting TerminationFlue Pipe Materials Sealing Type-B Doublewall Vent Pipe or Galvanized Vent Pipe Length of Air Inlet PipeAir Inlet Piping Materials 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 Train and Controls Connecting Gas Piping to the Pool HeaterGas Piping 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 Automatic Chlorinator and Chemical Feeders Water Flow SwitchRelief Valve Way Automatic Bypass Valve Wiring Pump Purge Delay OptionService Indicator Option Terminal Strip Connection Options TABLE-MOperation Lighting InstructionsStarting the Filter System Pre-Start ChecklistTo Turn Off Gas To Pool Heater 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 FunctionsIgnition and Control Timings Access to Internal Control PanelTABLE-N 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 ProcedureIgnition System Checkout Adjustment ProcedureServicing Hot Surface Igniter and Ignition Module 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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