Lochinvar 495, 065, 000 - 2 service manual Cleaning and Maintenance, Set Up Procedure

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Hydronic Heating Boilers and Domestic Water Heaters

CLEANING AND MAINTENANCE CONTINUED

The " (+)" connection on the manometer connects to the tee in the tubing from the units front chamber and the " (-) " connection on the manometer connects to the tee in the small tubing from the burner.

Upon a call for heat, the fan will run for about 90 seconds before going into soft lockout. If necessary, turn the power to the unit OFF and then back ON again to recycle the fan.

Note: If the unit has been firing recently, allow the unit to cool for five minutes with the fan running before beginning the adjustment procedure.

Note: Retain the plastic caps removed from the tees for reinstallation when complete.

Figure 43 - Air Pressure Switch

Turn the adjustment screw on the air shutter to open or close shutter.

Figure 44 - Adjusting Air Shutter

Set Up Procedure

To the left of the fan is an air pressure switch with a large and a small tube delivering pressure from points inside the unit (see Figure 43). The pressure in the large tube is the chamber pressure. The pressure in the small tube is the burner pressure. They act together to make the pressure switch. By disconnecting the caps from the tees in the pressure switch hoses and connecting them to either side of a manometer, you can read the differential pressure to the switch.

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3

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1

0

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Figure 45 - Combustion Air Adjustment with a Manometer to set Differential Pressures

Adjustment Procedure: 495,000 - 1,255,000 Btu/hr Models

1.Remove the upper front jacket panels from the unit to access the upper chamber.

2.Locate the air shutter on the side of the fan housing (see Figure 44). Turn the adjustment screw on the air shutter to open or close the shutter. Increase air shutter opening to increase air pressure. Decrease air shutter opening to decrease air pressure.

3.Adjust the air shutter until the differential pressure is nominally 1.2 - 1.35 inches water column for models 495,000 - 745,000 Btu/hr and 1.1 - 1.3 inches water column for models 985,000 - 1,255,000 Btu/hr. Note: The air chamber pressure is 1.2 inches water column for liquefied petroleum (L.P.) and 1.4 inches water column for natural. See Figure 45 on installations up to 2000 feet altitude. Contact the factory for high altitude pressure settings.

4.Once the adjustment procedure is complete, reconnect the caps to the tees in the hoses to the pressure switches and check all tubing and wire connections for a snug fit. Test fire the unit. Reinstall upper panels.

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Contents Domestic Water Heaters Save this manual for future referenceHydronic Heating Boilers and Domestic Water Heaters Safety Information General Product InformationHydronic Heating Boilers and Domestic Water Heaters Product Identification Front and Rear ViewInstallation Clearances from Combustible ConstructionBase for Combustible Floors Shut-Down and Draining Outdoor Boiler InstallationHydronic System Antifreeze Pump OperationInstalling Combustion Air Filter Freeze Protection for a Heating Boiler System if requiredCombustion Air Filter Combustion Air Options One OpeningExhaust Fans Installation VentingGeneral Information Venting SupportTABLE-A Flue Pipe Sizes Vent System OptionsTable B TABLE-CFlue Outlet Piping Conventional Negative Draft VentingNegative Draft Common Venting SystemsOutdoor Installation Venting Masonry Chimney InstallationsOutdoor Vent/Air Inlet Location Table DOutdoor Vent Kits Outdoor Vent KitGas Pressure Test Gas PipingInput Max Min Connecting Gas Piping to Unit Gas Train and ControlsCombination Gas Valves Checking Gas Supply PressureVenting of Combination Gas Valves Gas Manifold Pressure Adjustment Measuring Gas Supply Pressure at Combination Gas ValveNET Manifold Pressure Regulator Pressure Less Front Chamber PressureRelief Valve Water Flow SwitchLow Water Cutoff If EquippedTerminal Strip Connection Options Table JNominal AMP Draw Data Water Connections Heating Boilers Only General Plumbing RulesPrimary/Secondary Boiler Piping Low Temperature Return Water Systems Radiant Floor and Snow Melt Heating SystemsInput LTV Valve Kit Btu/hr Table L Installation with a Chilled Water SystemSystem Temperature Rise Chart Based on Btu/hr Input 10ºF 20ºF 30ºF 40ºF 50ºF 60ºFBoiler Bypass Requirements Temperature/Pressure GaugeBoiler Flow Rate Filling the SystemOperation Lighting InstructionsLocating Temperature Control To Turn Off Gas To ApplianceSet Point Temperature Control SettingsTable M Maximum Set Point DeterminationShutdown Outdoor Air Reset OptionHigh-Fire Offset Outdoor Air Max O.A. MaxBoiler Application Temperature Control SensorsPlacement of Sensors Water Heater ApplicationHot Surface Igniter and Ignition Control Module Remote Wire ConnectionWire Maximum Gauge Table NIgnition and Control Timings Diagnostic Status IndicationHot Surface Ignition Control Module Ignition Module Lockout FunctionsStatus LED Diagnostic Codes Table OTable P Domestic Water Heaters Required Temperature RiseTemperature Rise Chart Water Velocity ControlCirculating Pump Pipe Sizing ChartWater Chemistry Table RDomestic Water Potable Hot Water Temperature Control SettingsDomestic Water Temperatures Minimum Pump PerformanceOptional Relief Valve High Water Temperature Limit ControlLocation of Cold Water Supply Piping Connections Thermal ExpansionCleaning Maintenance Flue Gas Passageways Cleaning ProceduresHeat Exchanger Cleaning ElectricalCombustion and Ventilation Air Cleaning and Maintenance Set Up ProcedureAdjustment Procedure 495,000 1,255,000 Btu/hr Models Servicing Hot Surface Igniter and Ignition Module Sequence of Operation Ignition System CheckoutManual Reset High-Limit Thermostat Power SupplyON/OFF Rocker Switch Safety Device TerminalsElectronic Temperature Controller Ignition ModuleHeat Transfer Process Gas Valves, Burner Schematic Diagram BTU/HRHI-LIMITS PWR SW Main Unit GAS Valves Blower Pressure Switch Wiring Diagram 15AMPSControl BOX Connections Control BOX Connections

000 - 2, 065, 495 specifications

Lochinvar 000 - 2,495,065 is a cutting-edge water heating solution designed to meet the needs of modern residential and commercial applications. This high-efficiency unit combines advanced engineering with robust technologies, providing unmatched performance and reliability.

One of the standout features of the Lochinvar 000 - 2,495,065 is its high thermal efficiency, which often exceeds 95%. Utilizing condensing technology, the unit harnesses heat from exhaust gases, allowing it to recover otherwise lost energy, thereby reducing operational costs significantly. This efficiency not only lowers energy bills for users but also lessens the environmental impact by minimizing greenhouse gas emissions.

The Lochinvar 000 - 2,495,065 is equipped with a lightweight stainless steel heat exchanger. This construction ensures exceptional corrosion resistance and longevity, extending the lifespan of the unit while maintaining optimal performance. The stainless steel design also contributes to faster heating times, making it ideal for high-demand environments.

In terms of control technologies, the Lochinvar 000 - 2,495,065 features an intuitive touchscreen interface. This user-friendly design allows for seamless operation, real-time monitoring, and easy adjustments to temperature settings. Additionally, it facilitates remote diagnostics, promoting efficient maintenance and reducing downtime, which is crucial for busy facilities.

For enhanced safety, the Lochinvar 000 - 2,495,065 includes multiple safety mechanisms, such as over-temperature protection, flame safeguard, and leak detection systems. These safety features ensure secure operation and give users peace of mind.

Moreover, the unit is compatible with various fuel sources, including natural gas and propane, making it versatile and adaptable to different infrastructure requirements. This flexibility ensures that the Lochinvar 000 - 2,495,065 can be integrated into various settings, from residential homes to large commercial buildings.

Another significant characteristic is its compact design, allowing for easy installation in tight spaces. The footprint of the Lochinvar 000 - 2,495,065 makes it an ideal solution for applications where space is at a premium, without compromising on performance.

In summary, Lochinvar 000 - 2,495,065 represents a premium choice for water heating solutions, merging advanced technologies, high efficiency, and user-friendly design to cater to a wide range of heating needs while ensuring safety and sustainability.
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