Lochinvar 502, 2072 operation manual Air inlet piping materials, Length of air inlet pipe

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Installation & Operation Manual

2 Venting

Length of air inlet pipe

The installed length of air inlet pipe from the unit to the outside air inlet cap must not exceed 50 equivalent feet (15.2 m). Subtract 5 feet (1.5 m) of equivalent length for each 90° elbow. Subtract 2.5 feet (0.7 m) of equivalent length for each 45° elbow.

Do not exceed the limits for the combustion air inlet piping lengths.

Connecting the air inlet pipe to the unit

Connect the air inlet piping directly to the unit by attaching it to the DV box adapter. The DV box adapter is included in the direct vent kits. The combustion air inlet area of the unit is located at the right rear corner of the unit. This unit uses a simple air filter to ensure clean air is used for the combustion process. Attach the DV box adapter over the air filter (see FIG. 2-11). Align screw holes on the DV box adapter with the screw holes surrounding the air filter hanger. Insert sheet metal screws and tighten firmly.

For venting versatility, you can move the air filter assembly and DV box adapter to the right side of the unit. Remove the metal panel on the unit’s right side (see FIG. 2-12). Remove the filter/bracket assembly from the rear of the unit. Attach the filter/bracket assembly and DV box adapter to the right side opening using the pre-drilled screw holes. Make sure you attach the metal panel to the rear combustion air opening of the unit.

The DV box adapter has an air inlet pipe mounting ring. Connect combustion air inlet piping to the direct vent box mounting ring.

VERTICAL DV BOX ADAPTER

 

HORIZONTAL DV BOX ADAPTER

 

Figure 2-11_Attaching DV Box Adapter to Unit

Figure 2-12_Moving Air Filter Assembly & DV Box Adapter

Air inlet piping materials

The air inlet pipe(s) must be sealed. Select air inlet pipe material from the following specified materials.

•PVC, CPVC, or ABS*

•Dryer vent or sealed flexible duct (not recommended for rooftop air inlet)

•Galvanized steel vent pipe with joints and seams sealed as specified below

•Type-B double-wall vent with joints and seams sealed as specified below.

*Plastic pipe may require an adapter (not provided) to transition between the air inlet connection on the unit and the plastic air inlet pipe.

￿WARNING

Use only vent or air intake materials specified in this manual. Follow vent pipe manufacturer’s instructions. Failure to do so can result in property damage, personal injury, or death. Mixing of venting materials will void the warranty and certification of this unit.

Sealing Type-B double-wall vent pipe or galvanized vent pipe

Follow the steps below to properly seal Type-B double-wall vent pipe or galvanized vent pipe.

1.Seal all joints and seams of the air inlet pipe using either aluminum foil duct tape meeting UL Standard 723 or 181 A-P or a high quality UL Listed silicon sealant such as those manufactured by Dow Corning or General Electric.

2.On horizontal runs, do not install vent pipe with seams pointing down. Position vent pipe so that the seams are on the top side of the vent pipe.

3.Secure all joints with a minimum of three sheet metal screws or pop rivets. Apply aluminum foil duct tape or silicone sealant to all screws or rivets installed in the vent pipe.

4.Ensure that the air inlet pipes are properly supported.

Sealing PVC, CPVC, ABS, dryer vent, and flex duct vent pipe

1.Clean the PVC, CPVC, or ABS air inlet pipe using the pipe manufacturer’s recommended solvents. Seal the pipe joints using standard commercial pipe cement.

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Contents Installation & Operation Manual Models 502 Save this manual for future referenceContents Special instructions Please read before proceedingRemoval of Combustion Chamber Lining or Base Panels Safety information Owner warningCopper-fin2- How it works Copper-fin2- How it works Copper-fin2- How it works Specifications RatingsDetermine unit location Location of unitIndoor clearances from combustible construction Freeze protectionOutdoor pool heater installation LocationHydronic systems anti-freeze Combustion and ventilation airOutside Combustion Air Using Direct Venting Minimum Recommended Combustion AIR Supply to Equipment RoomExhaust fans Combustion air filterVenting Identify your appliance’s vent systemCAT IV Flue pipe materials CAT I Negative pressure non-condensingVent system options Draft VentingVenting support General informationBarometric damper location Conventional negative draft venting see Negative draftFlue outlet piping Common Venting SystemsVertical vent termination clearances and location Masonry chimney installationsInspection of a masonry chimney 1Vent Termination from Peaked Roof 10 ft. or Less From Ridge Vertical DirectAire venting see Combustion air inlet pipingLength of air inlet pipe Sidewall air inletCombined air inlet points Vertical Rooftop Air InletClearances Venting of flue products Directaire Kits Model Horizontal KIT Vertical KITSidewall venting see Sidewall with fanSidewall venting termination Sidewall vent termination clearances and locationDrain tee installation Sidewall venting without fanModels 502 Horizontal DirectAire venting Powered Venting see Venting of flue productsFlue outlet piping Direct venting seeVertical DV venting termination Masonry chimney installation Horizontal DV venting terminationHorizontal Vent Termination Clearances and Location Combustion air inlet pipingConnecting the air inlet pipe to the unit Air inlet piping materialsLength of air inlet pipe Sealing PVC, CPVC, ABS, dryer vent, and flex duct vent pipeMultiple sidewall direct vent installations Vertical and sidewall combustion air inletHorizontal combustion air inlet clearances Vertical Combustion Air Inlet ClearancesOutdoor vent/air inlet location Outdoor installation seeOutdoor vent cap kit Connecting to gas supply Gas connectionsGas connection Gas pressure testSuggested GAS Pipe Size for Single Unit Installations Model Combination gas valvesGas train and controls Venting of combination gas valvesGAS Piping Size Chart Checking gas supply pressureWater connections Circulating pump502 752 Models 992 1442 ModelsHeat exchanger Initial set-up of maximum water flowMinimum Pump Performance Auxiliary Mixed Water Limit Control3Heater Within 15 feet of Pool Piping 6Cascaded Heaters Beyond 15 feet of Pool Piping Pool Return Sensor Location MIN Primary Pumped Automatic Bypass Automatic bypass valve cover installationOutdoor operation 3-way valve cover Water flow switch Pump purge delayPump purge pre-running delay Relief valveWay automatic bypass valve wiring Way Automatic Bypass Valve WiringRemote Wire Connection Electrical connectionsInstallation must comply with Pool heater operating control moduleLine voltage connections AMP Draw DataLouver proving switch Pool return sensor 2-wirePool supply/limit sensor 4-wire Low voltage connectionsAlarm contacts Wiring of the cascadePre-start checklist StartupStarting the filter system Check for gas leaksCheck thermostat circuits Check vent and air pipingPlacing the pool heater in operation Start the pool heater2Operating Instructions Configuration of the cascade Set clockOperating information GeneralPool heater temperature regulation Cascade DAY Switching on SequenceSequence of the cascade Sequence of operation MENU/EXIT Display Screen ENTER/RESET Updown Copper-fin2control moduleAccess modes InstallerUser To save parameters and exit programmingStatus display screens Unit Pump Delay Sysrtn OpenSysrtn Shorted STG DemandService technician Maintenance Maintenance and annual startupOwner maintenance Maintenance Address reported problemsInspect appliance area Inspect appliance interiorCheck all wiring Check control settingsCheck relief valve Inspect/replace hot surface igniter Ignition system checkoutPerform start-up and checks Check burner flame Inspect and clean burnerCheck flue gas passageways Review with owner Oiled bearing circulatorsConnection diagram Digital HarnessController Ladder diagram LOW VoltageRuntime Contacts 2BOARDCONNECTION Outdoor S5SENSOR POOL2ND Page
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2072, 502 specifications

Lochinvar 2072,502 is an innovative and robust water-heating solution tailored for residential and commercial applications. This model represents a significant advancement in energy efficiency and performance, catering to the dynamic heating requirements of modern buildings.

One of the standout features of Lochinvar 2072,502 is its advanced thermal efficiency. With an impressive AFUE (Annual Fuel Utilization Efficiency) rating, the unit delivers exceptional heat output while minimizing energy consumption. This not only reduces utility bills for homeowners and businesses but also supports sustainability efforts by decreasing carbon footprints.

The Lochinvar 2072,502 incorporates cutting-edge technologies that set it apart in the market. It is equipped with advanced control systems that allow users to precisely manage heating outputs, ensuring optimal comfort while conserving energy. The user-friendly digital display provides real-time data, allowing for efficient monitoring and control.

Another significant characteristic of the Lochinvar 2072,502 is its robust stainless-steel construction. This feature enhances the unit's durability and longevity, ensuring reliable performance even in challenging conditions. The high-quality materials also contribute to maintaining consistent water temperatures, which is essential for both residential and commercial heating needs.

The Lochinvar 2072,502 operates silently, making it ideal for installations in areas where noise is a concern. Its compact design allows for flexible installation options, fitting seamlessly into various spaces, whether it’s a utility room, basement, or outdoor area.

Furthermore, the unit supports multiple venting options, accommodating different building architectures and layouts. This versatility makes it an ideal choice for new builds and retrofitting existing systems.

Maintenance is streamlined with the Lochinvar 2072,502, as it features a self-diagnostics system that simplifies troubleshooting. Regular service check-ups are made easier with accessible components, allowing technicians to perform maintenance tasks efficiently.

In summary, the Lochinvar 2072,502 stands out for its high efficiency, advanced technology, durability, and flexible installation options. It is an ideal choice for those seeking a reliable and technologically advanced water-heating solution that meets the challenges of contemporary heating demands while promoting energy savings and environmental responsibility.
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