Lochinvar 065, 495, 000 - 2 service manual Gas Manifold Pressure Adjustment

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Installation and Service Manual

9.If gas pressure is out of range, contact your gas utility, gas supplier, qualified installer or service agency to determine the necessary steps to provide proper gas pressure to the control.

10.If gas supply pressure is within normal range, remove the gas manometer and replace the pressure tap fittings in the gas control as indicated in the following steps.

11.Turn the power switch to the “OFF” position.

12.Turn gas valve knob to the “OFF” position.

13.Shut off gas supply at the manual gas cock in the gas piping to the unit. If fuel supply is L.P. gas, shut off gas supply at the tank.

14.Remove the manometer and related fittings from the “inlet” side of the gas valve, replace 1/8" hex plug in the gas valve and tighten.

15.Turn on the gas supply at the manual valve, turn on L.P. gas at the tank if required.

16.Turn the power switch to the “ON” position.

17.Turn the gas valve knob to the “ON” position.

18.Set the electronic temperature control or thermostat to call for heat.

￿WARNING: After completing any testing on the gas system, leak test all gas connections. Apply a soap/water solution to all gas connections while main burners are operating. Bubbles forming indicate a leak. Repair all leaks at once. Do not operate this unit with a leak in the gas train, valves or related piping.

Check burner performance by cycling the system while you observe burner response. Burners should ignite promptly. Flame pattern should be stable, see Burner Flames, page 40. Turn the system off and allow burners to cool, then cycle burners again to ensure proper ignition and flame characteristics.

4

 

3

 

2

INLET

1/8" HEX INLET

 

1

PRESSURE TAP

0

 

1

 

2

 

3

 

4

 

MANOMETER

 

GAS

VALVE

CONTROL

KNOB OUTLET

Figure 20 - Measuring Gas Supply Pressure at Combination Gas Valve

Gas Manifold Pressure Adjustment

IMPORTANT: The gas valves are referenced to the fan pressurized chamber by a hose connected from the vent of the gas valve regulator to the chamber pressure tap located on the front inside portion of the jacket. Reference the drawings in this section for component and connection points for pressure measurement. The referenced chamber pressure must be subtracted from the manifold pressure to obtain actual net manifold pressure for normal operation. A manometer or magnahelic gauge legible in 0.1" increments up to 10 inches w.c. is required to check and adjust the manifold pressure. The regulator cover screw on the gas valve must be in place and tight for the unit to operate properly.

1.Remove screws that fasten the control panel access door and remove the door.

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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 IdentificationClearances from Combustible Construction InstallationBase for Combustible Floors Pump Operation Outdoor Boiler InstallationHydronic System Antifreeze Shut-Down and DrainingFreeze Protection for a Heating Boiler System if required Installing Combustion Air FilterCombustion Air Filter One Opening Combustion Air OptionsVenting Support Installation VentingGeneral Information Exhaust FansTABLE-A TABLE-C Vent System OptionsTable B Flue Pipe SizesCommon Venting Systems Conventional Negative Draft VentingNegative Draft Flue Outlet PipingMasonry Chimney Installations Outdoor Installation VentingOutdoor Vent Kit Table DOutdoor Vent Kits Outdoor Vent/Air Inlet LocationGas Piping Gas Pressure TestInput Max Min Gas Train and Controls Connecting Gas Piping to UnitChecking Gas Supply Pressure Combination Gas ValvesVenting of Combination Gas Valves Measuring Gas Supply Pressure at Combination Gas Valve Gas Manifold Pressure AdjustmentRegulator Pressure Less Front Chamber Pressure NET Manifold PressureIf Equipped Water Flow SwitchLow Water Cutoff Relief ValveTable J Terminal Strip Connection OptionsNominal AMP Draw Data General Plumbing Rules Water Connections Heating Boilers OnlyPrimary/Secondary Boiler Piping Radiant Floor and Snow Melt Heating Systems Low Temperature Return Water SystemsInput LTV Valve Kit Btu/hr 10ºF 20ºF 30ºF 40ºF 50ºF 60ºF Installation with a Chilled Water SystemSystem Temperature Rise Chart Based on Btu/hr Input Table LFilling the System Temperature/Pressure GaugeBoiler Flow Rate Boiler Bypass RequirementsLighting Instructions OperationTo Turn Off Gas To Appliance Locating Temperature ControlMaximum Set Point Determination Temperature Control SettingsTable M Set PointOutdoor Air Max O.A. Max Outdoor Air Reset OptionHigh-Fire Offset ShutdownWater Heater Application Temperature Control SensorsPlacement of Sensors Boiler ApplicationTable N Remote Wire ConnectionWire Maximum Gauge Hot Surface Igniter and Ignition Control ModuleIgnition Module Lockout Functions Diagnostic Status IndicationHot Surface Ignition Control Module Ignition and Control TimingsTable O Status LED Diagnostic CodesTable P Water Velocity Control Required Temperature RiseTemperature Rise Chart Domestic Water HeatersTable R Pipe Sizing ChartWater Chemistry Circulating PumpMinimum Pump Performance Potable Hot Water Temperature Control SettingsDomestic Water Temperatures Domestic WaterThermal Expansion High Water Temperature Limit ControlLocation of Cold Water Supply Piping Connections Optional Relief ValveFlue Gas Passageways Cleaning Procedures Cleaning MaintenanceElectrical Heat Exchanger CleaningCombustion and Ventilation Air Set Up Procedure Cleaning and MaintenanceAdjustment Procedure 495,000 1,255,000 Btu/hr Models Servicing Hot Surface Igniter and Ignition Module Ignition System Checkout Sequence of OperationSafety Device Terminals Power SupplyON/OFF Rocker Switch Manual Reset High-Limit ThermostatIgnition Module Electronic Temperature ControllerHeat Transfer Process Gas Valves, Burner 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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