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Lochinvar 400, 801 operation manual Existing vent as a chase, 10Existing Vent as a Chase

Models: 400 801

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Page 35

Installation & Operation Manual

5 Vertical direct venting (continued)

Existing vent as a chase

Follow all existing termination and clearance requirements and allowable pipe lengths. Use only approved venting materials listed in the General Venting Section of this manual.

Figure 5-10Existing Vent as a Chase

AIR INLET				FLUE EXHAUST
				FLUE EXHAUST

SEAL

EXISTING

CAP

SEAL

FLUE OUTLET

*For concept illustration only. Individual installations

may vary due to job site speciﬁc equipment.

35

Image 35

Lochinvar 400, 801 operation manual Existing vent as a chase, 10Existing Vent as a Chase

Contents

Models 400 Contents Please read before proceeding When servicing boilerStainless steel heat exchanger Knight XL How it worksModel Models 601 Knight XL Boiler =B=R Rating RatingsBefore locating the boiler, check Installation must comply withCloset and alcove installations Determine boiler locationAlcove Installation Flooring and foundation Residential garage installationProvide air openings to room Vent and air pipingAreas likely to have contaminants When using an existing vent system to install a new boilerProducts to avoid When removing a boiler from existing common vent system Gas conversions Model Prepare boilerRemove boiler from wood pallet Leveling the boiler Models 601General venting Direct venting options Vertical Vent General venting Install vent and combustion air pipingRequirements for installation in Canada Installing vent or air pipingVent Pipe, and Fittings PVC/CPVC air intake/vent connectionsStainless 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 penetrationsTermination and ﬁttings Prepare wall penetrations Alternate Field Supplied OptionMultiple vent/air terminations Description and usage Sidewall termination installation9Concentric Vent Dimensional Drawing Models 400 Multiventing sidewall terminations 11Concentric Vent Sidewall AttachmentVent/air termination vertical Vertical direct ventingMultiple vent/air terminations Prepare roof penetrations4Concentric Vertical Termination Vertical termination installationMm see -9, Multiventing vertical terminationsConcentric Venting Arrangement Alternate vertical concentric venting10Existing Vent as a Chase Existing vent as a chaseChilled water system Hydronic pipingSystem water piping methods General piping information Low water cutoff deviceHydronic piping Near boiler piping components Flow switch adjustmentVariable speed pump option Near boiler piping connectionsCirculator sizing 20F 25F 30F 35F Model Head FeetPressure 7Single Boiler Multiple Temperatures 8Single Boiler Primary/Secondary Piping Manifold Pipe Sizes in Inches mm Number of Units10Multiple Boilers Primary/Secondary Piping Loop Gas connections Connecting gas supply pipingPropane Gas Natural gasInches Check inlet gas supplyGas Pressure Gas valve replacementLow voltage connections Field wiringInstallation must comply with Line voltage connectionsLow gas pressure switch Outdoor temperature sensorLouver proving switch High gas pressure switchModbus Flow switchAlarm contacts Wiring of the cascadeManual 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 operationConﬁguration of the cascade Verify DHW modeSet domestic hot water DHW operation General Operating informationProtection features Boiler temperature regulation Cascade Outdoor reset operation, if usedOperation Display Sequence of operationStandby, ready to start a new cycle Navigation Dial Knight XL control moduleUser Access modesInstaller Call for Heat Information Dial Function Instructions Maintenance Maintenance and annual startupService technician 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 settingsModel Kit Part Component Number Description Check ﬂame signalCleaning boiler heat exchanger Review with ownerLOW Voltage 120 VAC High Voltage Diagrams2Ladder Diagram Page KBXII-I-O Rev D