Lochinvar 1.3, 1.5 service manual Checking temperature sensors, Temperature Resistance

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Service Manual

3 Troubleshooting

Checking temperature sensors

The water heater temperature sensors (inlet water, outlet water, system water, and flue) are all resistance type devices. The following tables show the correct values for the sensors at various temperatures. Use an ohmmeter to read the resistance of the sensor at a known temperature. If the resistance of the sensor does not closely match its corresponding table, replace the sensor.

Table 3B - Inlet/Outlet and Tank Sensor Resistance vs. Temperature

Temperature	Resistance	Temperature	Resistance

50	18,780	158	1,990

68	12,263	176	1,458
86	8,194	194	1,084
104	5,592	212	817

122	3,893	--	--

140	2,760	--	--



Table 3C - Flue Temperature Sensor Resistance vs. Temperature

Temperature	Resistance	Temperature	Resistance

68	14,773	176	1,707

86	9,804	194	1,266

104	6,652	212	952

122	4,607	230	726

140	3,252	248	560

158	2,337	--	--

Image 40

Contents Models 1.0, 1.3, Contents Handling ceramic fiber materials Niosh stated First AidMaintenance ServiceTroubleshooting Armor X2 display Control inputs Primary Smart Control ModuleSecondary Smart Touch Control Module Primary Control outputsHow the water heater operates General OperationSequence of operation Sequence of operation Sequence of operationThis table lists the parameters and where to access them Parameter tableBMS Viewable and changeable control parameters Status ScreenService Details Screen Service Main Screen Setup Screen Service/Setup Parameters Screen Service Set Point Parameters Screen Night Setback Parameters Screen Cascade Parameters Screen Cascade Operation10Vdc BMS Parameters Screen 10Vdc OperationService Cascade Screen Service Temps Screen Burners Screen Graph Select Screen History Screen Service Mode Screen Maintenance Maintenance and annual startup Address reported problems Clean condensate trapInspect water heater area Inspect water heater interiorCheck water system Flue vent system and air pipingCheck expansion tank Check water heater relief valve Check ignition ground wiring Check all water heater wiringCheck control settings Check flame signalCheck Delta T Cleaning water heater heat exchangerOiled bearing circulators Troubleshooting Alarm ScreenCheck the following Before troubleshootingCheck control module fuses Troubleshooting Checking temperature sensors Temperature ResistanceFault Cause Corrective Action Flow Switch CondensateDrain Blocked Flame outFlame Lost Light cont’dWhile Running Cont’d Manual ResetHigh Limit Automatic Reset High Limit / HEXTemp SW Blower RPM’sLouver Proving Switch Too HighSensor Open Sensor ShortedResets Try Later Air Flow TooLow Flap ValveInternal Fault No Error StoredWriting to MemosCombustion Analysis Procedure Gas Valve AdjustmentOr Obstruction Gas Supply PressureModel Gas valve adjustment procedureModels 1.3

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1.5, 1.3, 1 specifications

Lochinvar 1 is a remarkable achievement in the realm of modern technology and engineering. As a powerful and efficient water heater, it has been designed to cater to a wide range of residential and commercial needs. One of the standout features of Lochinvar 1 is its advanced heating technology, which incorporates a high-efficiency condensing design. This technology allows the unit to achieve impressive energy savings by maximizing heat transfer while minimizing energy consumption.

The Lochinvar 1 utilizes a stainless steel heat exchanger that enhances durability and corrosion resistance. This not only extends the lifespan of the unit but also ensures consistent performance over time. Coupled with a user-friendly control system, users can easily adjust settings and monitor performance, enhancing overall convenience and usability.

Another key characteristic of the Lochinvar 1 is its compact design, making it suitable for a variety of installation environments. Whether in a residential basement or a commercial utility room, the unit’s space-saving configuration allows for efficient use of available area without compromising on capability.

Safety features are integral to the Lochinvar 1, providing peace of mind for users. The unit is equipped with advanced monitoring systems that can detect irregularities and automatically shut down the system if necessary. This not only protects the equipment but also enhances the safety of the environment in which it operates.

In terms of performance, Lochinvar 1 boasts a high recovery rate, ensuring hot water is available on demand. This is particularly beneficial for settings with high water usage, allowing simultaneous operations without lag.

Moreover, the unit supports various venting options, offering flexibility during installation. Whether using traditional vertical venting or innovations like direct venting, Lochinvar 1 accommodates different building designs and local codes, making it highly versatile.

In conclusion, Lochinvar 1 epitomizes the melding of efficiency, reliability, and user-friendly technology. With its high-performance features, robust safety systems, and adaptable installation options, it stands out as a forefront player in the water heating industry, meeting the diverse needs of today's consumers and businesses alike.