Lochinvar 000 - 2, 495, 065 Heat Exchanger Cleaning, Electrical, Combustion and Ventilation Air

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Installation and Service Manual

Heat Exchanger Cleaning

1.While burners are removed, check the heat exchanger surface for sooting. If present, heat exchanger must be cleaned and problem corrected. Proceed as follows.

2.Remove gas manifold(s)/orifice assemblies as described in steps 1 through 5 in Burner Removal and Cleaning, page 40.

3.Disconnect wiring from the hot surface igniter and hose from the burner pressure tap.

4.Remove inner jacket panel mounting screws and slide door assembly out toward front of the unit. Use caution to prevent damage to the refractory and hot surface igniter.

5.Check "V" baffles and frame runners along front and back edges of heat exchanger. Remove and clean if necessary.

6.Remove soot from heat exchanger with a stiff bristle brush. Use a vacuum to remove loose soot from surfaces and inner chamber.

7.The heat exchanger can be removed by sliding towards the front of the unit. Once the heat exchanger is removed from the unit, a garden hose can be used to wash the tubes to ensure that all soot is removed from the heat exchanger surfaces. Note: Do not wet the unit's refractory.

8.Ensure that all burner ports are cleaned to remove any soot. See Burner Removal and Cleaning, page 40.

9.Carefully reinstall the heat exchanger, "V" baffles, and frame runners if removed from the unit. Note: Make sure frame runners seal securely where they contact the front and rear compartment refractory.

10.Carefully reinstall inner jacket panels, burners, manifolds, wires and hoses. Use new gasket material to ensure a proper air seal.

11.Reassemble all gas and water piping. Test for gas leaks.

12.Reassemble outer jacket panels.

13.Cycle unit and check for proper operation.

Electrical

This unit uses a transformer to supply a low voltage control circuit. The voltage on the secondary side should be 24 to 28VAC when measured with a volt meter. Larger models have a 7AMP circuit breaker provided on the secondary side of the transformer. A tripped circuit breaker indicates a short in the 24VAC controls that must be corrected.

Combustion and Ventilation Air

Combustion Air Filter (Models 985,000 - 2,065,000 Btu/hr Only)

This unit has a standard air filter(s) located behind the combustion air inlet panel(s). This filter helps ensure clean air is used for the combustion process. Check this filter every month and replace when it becomes dirty. The filter size is 12" x 16" x 1" (30.5cm x 40.6cm x 2.5cm). You can find this commercially available filter at any home center or HVAC supply store.

To install filter, see Combustion Air Filter, page 8.

Air Flow

Check frequently to be sure the flow of combustion and ventilation air to the unit is not obstructed.

Combustion Air Fan

These units use a fan-assisted combustion process. These units have one fan to supply combustion air to the burners.

Fan Cleaning

Check each combustion air fan every six months. Clean fan as required when installed in a dusty or dirty location. Oiling is not required.

Combustion Air Fan Adjustment

The combustion air fan is factory preset and should not need adjustment in most cases. Follow the steps below to adjust the fan if a continuous Low Air Status Code occurs.

Check for proper installation and draft in the venting system. Correct as required.

Adjusting Differential Air Pressure

The following is a recommended method for setting the differential air pressure (￿P) for the fan.

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Contents Save this manual for future reference Domestic Water HeatersHydronic Heating Boilers and Domestic Water Heaters General Product Information Safety InformationHydronic Heating Boilers and Domestic Water Heaters Front and Rear View Product IdentificationBase for Combustible Floors InstallationClearances from Combustible Construction Hydronic System Antifreeze Outdoor Boiler InstallationShut-Down and Draining Pump OperationCombustion Air Filter Installing Combustion Air FilterFreeze Protection for a Heating Boiler System if required One Opening Combustion Air OptionsGeneral Information Installation VentingExhaust Fans Venting SupportTABLE-A Table B Vent System OptionsFlue Pipe Sizes TABLE-CNegative Draft Conventional Negative Draft VentingFlue Outlet Piping Common Venting SystemsMasonry Chimney Installations Outdoor Installation VentingOutdoor Vent Kits Table DOutdoor Vent/Air Inlet Location Outdoor Vent KitInput Max Min Gas Pressure TestGas Piping Gas Train and Controls Connecting Gas Piping to UnitVenting of Combination Gas Valves Combination Gas ValvesChecking Gas Supply Pressure Measuring Gas Supply Pressure at Combination Gas Valve Gas Manifold Pressure AdjustmentRegulator Pressure Less Front Chamber Pressure NET Manifold PressureLow Water Cutoff Water Flow SwitchRelief Valve If EquippedNominal AMP Draw Data Terminal Strip Connection OptionsTable J General Plumbing Rules Water Connections Heating Boilers OnlyPrimary/Secondary Boiler Piping Input LTV Valve Kit Btu/hr Low Temperature Return Water SystemsRadiant Floor and Snow Melt Heating Systems System Temperature Rise Chart Based on Btu/hr Input Installation with a Chilled Water SystemTable L 10ºF 20ºF 30ºF 40ºF 50ºF 60ºFBoiler Flow Rate Temperature/Pressure GaugeBoiler Bypass Requirements Filling the SystemLighting Instructions OperationTo Turn Off Gas To Appliance Locating Temperature ControlTable M Temperature Control SettingsSet Point Maximum Set Point DeterminationHigh-Fire Offset Outdoor Air Reset OptionShutdown Outdoor Air Max O.A. MaxPlacement of Sensors Temperature Control SensorsBoiler Application Water Heater ApplicationWire Maximum Gauge Remote Wire ConnectionHot Surface Igniter and Ignition Control Module Table NHot Surface Ignition Control Module Diagnostic Status IndicationIgnition and Control Timings Ignition Module Lockout FunctionsTable P Status LED Diagnostic CodesTable O Temperature Rise Chart Required Temperature RiseDomestic Water Heaters Water Velocity ControlWater Chemistry Pipe Sizing ChartCirculating Pump Table RDomestic Water Temperatures Potable Hot Water Temperature Control SettingsDomestic Water Minimum Pump PerformanceLocation of Cold Water Supply Piping Connections High Water Temperature Limit ControlOptional Relief Valve Thermal ExpansionFlue Gas Passageways Cleaning Procedures Cleaning MaintenanceCombustion and Ventilation Air Heat Exchanger CleaningElectrical Adjustment Procedure 495,000 1,255,000 Btu/hr Models Cleaning and MaintenanceSet Up Procedure Servicing Hot Surface Igniter and Ignition Module Ignition System Checkout Sequence of OperationON/OFF Rocker Switch Power SupplyManual Reset High-Limit Thermostat Safety Device TerminalsHeat Transfer Process Gas Valves, Burner Electronic Temperature ControllerIgnition Module BTU/HR Schematic DiagramHI-LIMITS PWR SW Main Unit GAS Valves Blower Pressure Switch 15AMPS Wiring DiagramControl 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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