Lochinvar 800 operation manual 3Low Voltage Field Wiring Connections

Page 48

48

AUX. DEVICE

 

 

 

 

 

 

RELAY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUX. DEVICE

 

 

 

 

 

 

 

PROVING SWITCH

 

 

 

 

 

 

 

HIGH GAS

C

24VAC

AUX. DEVICE

 

 

 

 

PILOT SUPPLY

 

 

 

PRESSURE SWITCH

NO

GND

 

 

 

 

AUX. DEVICE

 

 

 

(500 ONLY)

NC

 

 

 

PROVING

 

 

 

 

 

 

GAS PRESSURE

 

 

 

LOW GAS

C

SWITCH

 

 

 

 

FLOW

 

 

 

 

PRESSURE SWITCH

NO

 

 

 

 

SWITCH

 

 

 

 

(500 ONLY)

NC

ALARM

 

 

 

 

 

 

CONTACTS

CN4

 

 

 

 

 

 

 

 

 

COM

RUNTIME

 

 

 

 

CONTACTS

 

 

 

 

FLOW SWITCH

NO

DHW THERMOSTAT

LOW WATER

 

 

 

 

 

 

 

 

R

ROOM THERMOSTAT /

CUTOFF

 

 

 

W

ZONE CONTROL

 

 

 

 

 

CN5

 

 

 

 

 

CN2

 

 

 

 

 

 

 

SYSTEM

 

 

 

 

TANK THERMOSTAT

 

SENSOR

 

 

 

 

 

DHW TANK

 

 

 

 

 

 

 

 

 

 

 

 

SENSOR

 

 

 

 

 

 

OUTDOOR

 

 

 

 

 

 

SENSOR

 

 

 

 

WALL THERMOSTAT /

 

SHIELD GROUND

 

 

 

 

A

SEQUENCING

 

 

 

ZONE CONTROL

 

B

 

 

 

 

 

 

 

 

 

 

 

SHIELD GROUND

CN3

 

 

 

 

 

 

 

 

 

0-10VDC

EXTERNAL

 

 

 

SYSTEM SUPPLY SENSOR

 

 

GND

CONTROL

 

 

 

 

CN1

 

 

 

 

 

(AUX) DHW SENSOR

 

 

 

 

 

 

 

OUTDOOR SENSOR

 

 

 

 

 

 

 

BUILDING

 

 

 

 

 

 

 

MANAGMENT

 

 

 

 

 

 

 

SYSTEM

 

 

 

LOW WATER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CUTOFF

 

 

 

 

SHIELD

 

SHIELD

 

 

FROM

 

 

TO

PREVIOUS A

A

NEXT

BOILER

B

B

BOILER

 

 

Figure 8-3Low Voltage Field Wiring Connections

8 Field wiring

Installation & Operation Manual

Page 47 Page 49
Image 48
Page 47 Page 49
Contents
Models 399 Save this manual for future referenceContents When servicing boiler Please read before proceedingKnight XL How it works Air pressure switch Pump relay board ModelModels 600 Ratings Knight XL Boiler =B=R RatingInstallation must comply with Closet and alcove installationsDetermine boiler location Before locating the boiler, checkFor closet installations, Cpvc or TOPResidential garage installation Provide air openings to roomVent and air piping Flooring and foundationWhen using an existing vent system to install a new boiler Products to avoidAreas likely to have contaminants When removing a boiler from existing common vent system Prepare boiler Remove boiler from wood palletModel Gas conversionsLeveling the boiler Models 600General venting Direct venting options Vertical Vent Install vent and combustion air piping Requirements for installation in CanadaInstalling vent or air piping General ventingPVC/CPVC air intake/vent connections Approved Stainless Steel Vent ManufacturersMake Air inlet pipe materials Stainless steel ventFasNSeal Saf-T Vent Stainless steel air intake/vent connectionsOptional room air Removing from existing ventModel Description Kit Number Air contaminationIf using the alternate sidewall termination Sidewall direct ventingVent/air termination sidewall Determine location3AClearance to Gravity Air Inlets Prepare wall penetrations Bird Screen TypicalPrepare wall penetrations Alternate Field Supplied Option Multiple vent/air terminationsTermination and fittings Sidewall termination installation Description and usage9Concentric Vent Dimensional Drawing Models 399 11Concentric Vent Sidewall Attachment Multiventing sidewall terminationsVertical direct venting Vent/air termination verticalPrepare roof penetrations 2Vertical Terminations with Multiple BoilersVertical termination installation 4Concentric Vertical TerminationMultiventing vertical terminations Mm see -9,Hydronic piping Hydronic piping Flow switch adjustment Near boiler piping connectionsCirculator sizing Head Feet Pressure20F 25F 30F 35F 399 500 600 700 800Near boiler piping components 7Single Boiler Primary/Secondary Piping Number of Units Model Manifold Pipe Sizes in Inches mm Connecting gas supply piping Gas connectionsNatural gas Propane GasNominal Natural Gas Pipe Capacity Chart Check inlet gas supplyIron Pipe Length of Pipe in Straight Feet Gas valve replacement Gas PressureField wiring Installation must comply withLine voltage connections Outdoor temperature sensor Auxiliary device proving switchHigh gas pressure switch Low gas pressure switchAlarm contacts Wiring of the cascadeSystem supply sensor Boiler management system3Low Voltage Field Wiring Connections Condensate disposal Condensate drainFreeze protection when used Start-upCheck/control water chemistry Fill and test water systemCheck for gas leaks Check thermostat circuitsInspect/fill condensate system Inspect/check condensate lines and fittingsFinal checks before starting the boiler Start the boilerIf boiler does not start correctly Check system and boilerFor Your Safety Read Before Operating Set space heating operation Natural Gas PropaneConfiguration of the cascade Set domestic hot water DHW operationOperating information GeneralProtection features Boiler temperature regulation Outdoor reset operation, if usedCascade DHW, Night Setback, and Ramp Delay operation with Cascade Sequence of the cascadeSequence of operation BLR IgnitionKnight XL control module ShutdownAccess modes InstallerUser To save parameters and exit programmingService StandbySet Point Met PrepurgeSYS ***.*F Control will display the actual fan motor RPMDelay 10V in **.VdcOperation of the cascade Maintenance Maintenance and annual startup Service technicianOwner maintenance Maintenance Address reported problemsClean condensate trap Check all piping for leaks Inspect boiler areaFlue vent system and air piping Check water systemCheck expansion tank Check boiler relief valveCheck ignition ground wiring Check all boiler wiringCheck control settings Inspect ignition and flame sense electrodesCheck flame signal Cleaning boiler heat exchangerReview with owner Diagrams High Voltage2Ladder Diagram Page
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