Lochinvar 800 operation manual Hydronic piping

Page 35

Installation & Operation Manual

6Hydronic piping (continued)

Flow switch, relief valve and temperature and pressure gauge installation

Basic steps are listed below to guide you through the installation of the flow switch, relief valve, and temperature and pressure gauge provided with the unit.

1.For Models 399 - 500 install the close nipple on the outlet connection of the heat exchanger. Install the tee with the 3/4 inch fitting positioned vertically and on the top as shown in FIG. 6-1. For Models 600 - 800 install the tee directly to the outlet connection of the heat exchanger with the 3/4 inch fitting positioned vertically and on the top (see FIG. 6-2).

2.For Models 700 - 800 install the 3/4 inch close nipple in the tee. Install the relief valve on the 3/4 inch close nipple (FIG. 6-2). For Models 399 - 600 install the relief valve directly into the 3/4 inch fitting on the tee (FIG. 6-1).

3.Install the close nipple on the downstream side of the relief valve tee (FIG. 6-1).

4.Install the tee with the 1 inch fitting positioned vertically and on the top (FIG. 6-1).

Figure 6-1Flow Switch, Relief Valve and Temperature and Pressure Gauge Installation_Models 399 - 500

RELIEF VALVE

FLOW SWITCH

PADDLE

TEMPERATURE AND

PRESSURE

GAUGE

TEE WITH FITTING ON TOP

(FIELD PROVIDED)

CLOSE NIPPLE (FIELD PROVIDED)

TEE WITH 1” FITTING ON TOP

CLOSE NIPPLE

TEE WITH 3/4” FITTING ON TOP

CLOSE NIPPLE

5.Attach paddle #3 to the flow switch per the manufacturer’s instructions.

6.Install the assembled flow switch into the 1 inch fitting of the tee installed in Step 4 (see FIG. 6-1).

7.Install a field provided close nipple on the downstream side of the flow switch (see FIG.’s 6-1 and 6-2).

8.Install a field provided tee with the gauge fitting positioned vertically and on the top (FIG.’s 6-1 and 6-2)

9.Install the temperature and pressure gauge provided with the unit into the top fitting of the tee (a bushing may be necessary) installed in Step 8 (FIG.’s 6-1 and 6-2).

Figure 6-2Flow Switch, Relief Valve and Temperature and Pressure Gauge Installation_Models 600 - 800

RELIEF VALVE

CLOSE NIPPLE

FLOW SWITCH

PADDLE

TEMPERATURE AND

PRESSURE

GAUGE

NOTICE

Be sure to install the flow switch so that the arrow on the flow switch is pointing in the direction of the flow (see FIG. 6-3).

TEE WITH FITTING ON TOP

(FIELD PROVIDED)

CLOSE NIPPLE (FIELD PROVIDED)

TEE WITH 1” FITTING ON TOP

CLOSE NIPPLE

TEE WITH 3/4” FITTING ON TOP

CLOSE NIPPLE

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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 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 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 pipingMake PVC/CPVC air intake/vent connectionsApproved Stainless Steel Vent Manufacturers 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 penetrationsTermination and fittings Prepare wall penetrations Alternate Field Supplied OptionMultiple vent/air terminations 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 Circulator sizing Flow switch adjustmentNear boiler piping connections 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 replacementLine voltage connections Field wiringInstallation must comply with 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 Cascade Boiler temperature regulationOutdoor reset operation, if used 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 Owner maintenance 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 settingsReview with owner Check flame signalCleaning boiler heat exchanger High Voltage Diagrams2Ladder Diagram Page

800 specifications

Lochinvar 800 is a groundbreaking boiler system designed to meet the heating needs of modern residential and commercial buildings. Renowned for its reliability and advanced technology, the Lochinvar 800 promises efficiency and performance that set it apart from conventional heating systems.

One of the standout features of the Lochinvar 800 is its high-efficiency heat exchanger, which enables significantly lower energy consumption compared to traditional units. This efficiency translates to substantial energy savings, making it not only an environmentally friendly choice but also a cost-effective one. The system boasts an impressive thermal efficiency rating, often exceeding 95%, which ensures that a large portion of the energy consumed is converted into usable heat.

Incorporating cutting-edge control technologies, the Lochinvar 800 utilizes smart controls that enable precise temperature regulation. These controls provide users with the ability to program and adjust settings according to specific heating needs, enhancing comfort while minimizing energy waste. The integration of modulating gas burners further optimizes energy usage, continuously adjusting the output based on the current demand, thereby preventing energy loss.

Another key characteristic of the Lochinvar 800 is its compact and sleek design, allowing for easy installation in various spaces, from utility rooms to commercial settings. The boiler's lightweight construction means that it can be mounted in tight areas, providing flexibility that adapts to the needs of the installation site.

Safety features are a top priority for the Lochinvar 800, equipped with advanced diagnostics and monitoring systems that ensure trouble-free operation. These systems continually assess performance and identify potential issues before they can evolve into serious problems, promoting longevity and reliability.

The Lochinvar 800 is also compatible with various heating distribution systems, including radiant floor heating and traditional radiators, making it a versatile choice for a wide range of applications. Coupled with its low emissions profile, the Lochinvar 800 stands out as a sustainable option in today’s market.

In summary, the Lochinvar 800 represents a new era in boiler design, merging efficiency, innovative technology, and adaptability to meet the challenges of contemporary heating needs. Its advanced features ensure optimal performance while maintaining a commitment to environmental responsibility, making it an ideal solution for energy-conscious consumers.
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