Lochinvar 800 operation manual 7Single Boiler Primary/Secondary Piping

Page 39

Installation & Operation Manual

6Hydronic piping (continued)

Figure 6-7Single Boiler - Primary/Secondary Piping

AIR SEPARATOR

 

MAY SUBSTITUTE

 

 

 

LOW LOSS HEADER

M E T S Y S M O R F

DRAIN POINT (TYPICAL)

SYSTEM SUPPLY SENSOR

BALL VALVE

 

 

 

(TYPICAL)

 

 

 

(WHEN USED)

 

NOT TO EXCEED 4 PIPE DIA OR MAX. OF 12" APART

 

 

SYSTEM CIRCULATOR

 

 

 

 

 

PRESSURE GAUGE

 

 

 

 

EXPANSION TANK

 

 

 

M

 

 

BOILER CIRCULATOR

 

 

 

 

E

 

 

 

 

T

 

 

 

 

S

 

 

 

 

Y

 

 

 

 

S

 

 

 

 

O

 

 

 

 

T

 

 

 

 

MAKE UP WATER

 

 

Y-STRAINER

 

 

 

(RECOMMENDED)

 

BACK FLOW

 

 

 

 

PREVENTER

 

 

 

 

PRESSURE REDUCING

 

 

 

VALVE

 

 

 

 

INDIRECT DHW

 

 

 

 

TANK

 

 

 

 

ANTI-SCALD

 

 

 

 

MIXING VALVE

 

 

 

 

HOT WATER OUT

 

 

 

 

DOMESTIC

 

 

 

 

HOT WATER

 

 

 

 

CIRCULATOR

UNION (TYPICAL)

 

BOILER

 

 

 

 

 

COLD WATER IN

TEMPERATURE / PRESSURE

 

PRESSURE RELIEF

 

 

 

 

 

GAUGE

 

 

 

DRAIN

VALVE

 

FLOW CHECK

 

 

 

 

VALVE (TYPICAL)

NOTICE

NOTICE

Please note that these illustrations are meant to show system piping concept only, the installer is responsible for all equipment and detailing required by local codes.

System flow should always remain higher than the required flow for the boiler(s) when the boiler(s) is in operation to prevent short cycling and high limit issues.

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Contents
Save this manual for future reference Models 399Contents Please read before proceeding When servicing boilerKnight XL How it works Model Air pressure switch Pump relay boardModels 600 Knight XL Boiler =B=R Rating RatingsBefore locating the boiler, check Installation must comply withCloset and alcove installations Determine boiler locationTOP For closet installations, Cpvc orFlooring and foundation Residential garage installationProvide air openings to room Vent and air pipingWhen 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 Gas conversions Prepare boilerRemove boiler from wood pallet ModelModels 600 Leveling the boilerGeneral venting Direct venting options Vertical Vent General venting Install vent and combustion air pipingRequirements for installation in Canada Installing vent or air pipingPVC/CPVC air intake/vent connections Approved Stainless Steel Vent ManufacturersMake Stainless steel vent Air inlet pipe materialsStainless steel air intake/vent connections FasNSeal Saf-T VentRemoving from existing vent Optional room airAir contamination Model Description Kit NumberDetermine location If using the alternate sidewall terminationSidewall direct venting Vent/air termination sidewall3AClearance to Gravity Air Inlets Bird Screen Typical Prepare wall penetrationsPrepare wall penetrations Alternate Field Supplied Option Multiple vent/air terminationsTermination and fittings Description and usage Sidewall termination installation9Concentric Vent Dimensional Drawing Models 399 Multiventing sidewall terminations 11Concentric Vent Sidewall AttachmentVent/air termination vertical Vertical direct venting2Vertical Terminations with Multiple Boilers Prepare roof penetrations4Concentric Vertical Termination Vertical termination installationMm see -9, Multiventing vertical terminationsHydronic piping Hydronic piping Flow switch adjustment Near boiler piping connectionsCirculator sizing 399 500 600 700 800 Head FeetPressure 20F 25F 30F 35FNear boiler piping components 7Single Boiler Primary/Secondary Piping Number of Units Model Manifold Pipe Sizes in Inches mm Gas connections Connecting gas supply pipingPropane Gas Natural gasLength of Pipe in Straight Feet Nominal Natural Gas Pipe Capacity ChartCheck inlet gas supply Iron PipeGas Pressure Gas valve replacementField wiring Installation must comply withLine voltage connections Low gas pressure switch Outdoor temperature sensorAuxiliary device proving switch High gas pressure switchBoiler management system Alarm contactsWiring of the cascade System supply sensor3Low Voltage Field Wiring Connections Condensate drain Condensate disposalFill and test water system Freeze protection when usedStart-up Check/control water chemistryInspect/check condensate lines and fittings Check for gas leaksCheck thermostat circuits Inspect/fill condensate systemCheck system and boiler Final checks before starting the boilerStart the boiler If boiler does not start correctlyFor Your Safety Read Before Operating Natural Gas Propane Set space heating operationSet domestic hot water DHW operation Configuration of the cascadeGeneral Operating informationProtection features Boiler temperature regulation Outdoor reset operation, if usedCascade Sequence of the cascade DHW, Night Setback, and Ramp Delay operation with CascadeBLR Ignition Sequence of operationShutdown Knight XL control moduleTo save parameters and exit programming Access modesInstaller UserPrepurge ServiceStandby Set Point MetControl will display the actual fan motor RPM SYS ***.*F10V in **.Vdc DelayOperation of the cascade Maintenance Maintenance and annual startup Service technicianOwner maintenance Inspect boiler area MaintenanceAddress reported problems Clean condensate trap Check all piping for leaksCheck boiler relief valve Flue vent system and air pipingCheck water system Check expansion tankInspect ignition and flame sense electrodes Check ignition ground wiringCheck all boiler wiring Check control settingsCheck flame signal Cleaning boiler heat exchangerReview with owner High Voltage Diagrams2Ladder Diagram Page
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