Lochinvar 000 - 2, 495 Temperature Control Sensors, Boiler Application, Water Heater Application

Page 32

Hydronic Heating Boilers and Domestic Water Heaters

OPERATION

Continued

Temperature Control Sensors

This is a two-stage temperature control that controls the burner ignition, pump, and alarm functions. This temperature controller can measure up to three different sensor inputs, depending upon how the unit is set up. They are as follows:

1.Inlet Water Temperature Sensor

2.Multi-Purpose Temperature Sensor

3.Outside Air Temperature Sensor

Inlet Water Temperature Sensor

This sensor measures the inlet water temperature coming into the unit.

Multi-Purpose Temperature Sensor

Depending upon how your unit is set up, this sensor can be used as a system sensor or a tank sensor.

Outdoor Air Temperature Sensor

This sensor is only available on boiler units with an outdoor air reset option. This allows you to tie boiler operation to the outdoor air temperature. As outside temperatures drop, the control will increase the temperature setting of the boiler. As outdoor temperatures rise, the control will decrease the temperature to the selected set point of the boiler. You can set the control to shut the boiler off when a desired outdoor air temperature level is reached.

Figure 37 - Outdoor Air Reset Chart Example

Boiler Application

Standard boiler units are shipped with two sensors; the inlet water temperature sensor and the multi-purpose temperature sensor. The multi-purpose sensor should be used as a system sensor. Boilers with the outdoor air reset option also have an outside air temperature sensor.

Water Heater Application

Water heater units are shipped with two sensors; the inlet water temperature sensor and the multi-purpose temperature sensor to be used as a tank sensor.

Placement of Sensors

Inlet Temperature Sensor

The inlet water temperature sensor is placed into the inlet bulbwell on the boiler. This sensor is installed by the factory in new units. Make sure to insert the sensor all the way into the bulbwell, leaving no air pocket between the front surface of the sensor and the back of the bulbwell. Air pockets are thermally non-conductive and will cause sensors to not read accurately.

System Sensor

This is used for boiler applications. This sensor will control the boiler operation based upon the water temperature within the building loop.

Tank Sensor

This is used in water heating applications. Place the sensor in the water storage tank to measure water temperature. For more information on mounting the sensor, see Remote Mounting of Sensors, page 33.

Outside Air Temperature Sensor

The outside air temperature sensor will only be used for boiler systems. The outside air sensor is optional. You must purchase the sensor from the appliance manufacturer. The sensor comes with a housing that helps protect the sensor from the elements. Mount the air sensor housing under the eve of the roof. Make sure the housing is out of direct sunlight. This will ensure that the sensor will accurately read the true outdoor temperature. For more information on mounting the sensor, see Remote Mounting of Sensors, page 33.

32

Page 31 Page 33
Image 32
Page 31 Page 33
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 ViewBase for Combustible Floors InstallationClearances from Combustible Construction Outdoor Boiler Installation Hydronic System AntifreezeShut-Down and Draining Pump OperationCombustion Air Filter Installing Combustion Air FilterFreeze Protection for a Heating Boiler System if required Combustion Air Options One OpeningInstallation Venting General InformationExhaust Fans Venting SupportTABLE-A Vent System Options Table BFlue Pipe Sizes TABLE-CConventional Negative Draft Venting Negative DraftFlue Outlet Piping Common Venting SystemsOutdoor Installation Venting Masonry Chimney InstallationsTable D Outdoor Vent KitsOutdoor Vent/Air Inlet Location Outdoor Vent KitInput Max Min Gas Pressure TestGas Piping Connecting Gas Piping to Unit Gas Train and ControlsVenting of Combination Gas Valves Combination Gas ValvesChecking Gas Supply Pressure Gas Manifold Pressure Adjustment Measuring Gas Supply Pressure at Combination Gas ValveNET Manifold Pressure Regulator Pressure Less Front Chamber PressureWater Flow Switch Low Water CutoffRelief Valve If EquippedNominal AMP Draw Data Terminal Strip Connection OptionsTable J Water Connections Heating Boilers Only General Plumbing RulesPrimary/Secondary Boiler Piping Input LTV Valve Kit Btu/hr Low Temperature Return Water SystemsRadiant Floor and Snow Melt Heating Systems Installation with a Chilled Water System System Temperature Rise Chart Based on Btu/hr InputTable L 10ºF 20ºF 30ºF 40ºF 50ºF 60ºFTemperature/Pressure Gauge Boiler Flow RateBoiler Bypass Requirements Filling the SystemOperation Lighting InstructionsLocating Temperature Control To Turn Off Gas To ApplianceTemperature Control Settings Table MSet Point Maximum Set Point DeterminationOutdoor Air Reset Option High-Fire OffsetShutdown Outdoor Air Max O.A. MaxTemperature Control Sensors Placement of SensorsBoiler Application Water Heater ApplicationRemote Wire Connection Wire Maximum GaugeHot Surface Igniter and Ignition Control Module Table NDiagnostic Status Indication Hot Surface Ignition Control ModuleIgnition and Control Timings Ignition Module Lockout FunctionsTable P Status LED Diagnostic CodesTable O Required Temperature Rise Temperature Rise ChartDomestic Water Heaters Water Velocity ControlPipe Sizing Chart Water ChemistryCirculating Pump Table RPotable Hot Water Temperature Control Settings Domestic Water TemperaturesDomestic Water Minimum Pump PerformanceHigh Water Temperature Limit Control Location of Cold Water Supply Piping ConnectionsOptional Relief Valve Thermal ExpansionCleaning Maintenance Flue Gas Passageways Cleaning ProceduresCombustion 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 Sequence of Operation Ignition System CheckoutPower Supply ON/OFF Rocker SwitchManual Reset High-Limit Thermostat Safety Device TerminalsHeat Transfer Process Gas Valves, Burner Electronic Temperature ControllerIgnition Module 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.
Top Page Image Contents