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Lochinvar SIT119, SIT030 operation manual 2 Wiring for Zone Control

Models: SIT030 SIT119

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Installation & Operation Manual

5 Wiring

Indirect water heater controlled using Aquastat and zone circulator / valve

1.Install Aquastat to tank. Aquastat control (TST20016) can be ordered from your local Lochinvar distributor.

2.Connect Aquastat to the zone controller for the Indirect Water Heater Zone.

3.Adjust Aquastat to the desired temperature.

Figure 5-2Wiring for Zone Control

TST20016

TEMPERATURE

ADJUSTMENT

WIRE

CONNECTIONS

ZONE CONTROL BOX

ZONE VALVE

ZONE CIRCULATOR

AQUASTAT

CONTROL

INDIRECT TANK

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Lochinvar SIT119, SIT030 operation manual 2 Wiring for Zone Control

Contents

SIT-I-ORev H Models SIT030 - SIT119Contents Hazard definitionsDANGER When servicing the indirect water heater APPROXIMATE TIME / TEMPERATUREPlease read before proceeding Indirect water heater operation1 General information Operating restrictionsSingle-wallheat exchanger Table 1A Component Materials2 Pre-installation Locating the tankRecommended clearances Table 2A Water Chemistry RequirementsPressure Drop Chart 3 Boiler side pipingTable 3A Table 3B Pressure Drop Values3 Boiler side piping continued Figure 3-1 Piping Diagram Zoned with CirculatorsNOTICE NOTICE Figure 3-2 Piping Diagram Zoned with Valves 3 Boiler side pipingNOTICE NOTICE MIXING VALVE3 Boiler side piping continued KNIGHTBOILER MAKE UP WATERFigure 3-4 Multiple Tank Connections 3 Boiler side pipingMAKE UP WATER SYSTEM4 Domestic side tank piping Basic domestic pipingDomestic water piping for distant fixtures Multiple tank domestic water pipingTemperature & pressure T&P relief valve Install drain valveStandard Installation Figure 4-1 Drain Valve InstalledStandard installation 4 Domestic side tank piping continuedBtu/hr SIT050Figure 4-2 Recommended Domestic Water Piping 4 Domestic side tank pipingANTI-SCALD MIXING VALVE5 Wiring Indirect water heater sensor setup Knight boilerInstall tank sensor Connect tank sensorFigure 5-2 Wiring for Zone Control 5 Wiring6 Start-upand check-out 7 Maintenance Maintenance ScheduleHomeowner monthly maintenance to include To Fill the Water Heater8 Performance data Squire Indirect Water Heater I=B=R RatingIndirect PotableHow to properly Size Your Indirect Water Heater DescriptionFill in the Blank TOTAL8 Performance data continued First Hour Rating - 180F Boiler Loop WaterKnight Boiler - Models SIT030 - SIT050 Knight Boiler - SIT065 - SIT119Universal Sizing - 45,000 - 295,000 Btu/hr 8 Performance data continuedFirst Hour Rating - 180F Boiler Loop Water First Hour Rating - 180F Boiler Loop WaterFirst Hour Rating - 200F Boiler Loop Water Universal Sizing - 45,000 - 295,0008 Performance data continued First Hour Rating - 200F Boiler Loop Water