Lochinvar 1.5, 3.5, 2.5 service manual 9Graph ScreenParameter Selection

Page 27

Service Manual

1 Service (continued)

Graph Screen

The Graph Screen consists of two (2) different screens. The First screen is the Parameter Selection Screen. By pressing the up and down arrow keys the desired parameter can be selected. When the SELECT button is pressed the parameter will appear in the bottom half of the ﬁrst screen. If a parameter is selected by mistake, it can be de-selected by highlighting the parameter and pressing the SELECT button. A maximum of ﬁve (5) items can be graphed at one time.

Figure 1-9Graph Screen_Parameter Selection

The Second screen is accessed by pressing the GRAPH button. Once the items to be graphed are selected, press the GRAPH button to view the graph. Each item graphed will have a different color line to represent it. The items selected will be shown below the graph along with their corresponding color. Press the BACK button to return to the Parameter Selection Screen.

Figure 1-10 Graph Screen

Image 27

Contents Models 1.5 2.0 2.5 3.0 Contents Please read before proceeding Handling ceramic fiber materialsNiosh stated First Aid When servicing boiler Troubleshooting What is in this manual?Service MaintenanceBoiler piping ServiceHome Screen Control inputs Smart Control ModuleStrip Control outputsHow the control modules operate Access modesGeneral Operation How the boiler operatesTo adjust and save parameters reference FIG Sequence of operation Menu Sub Parameter Name See Min Max Default User InstallerValue Access Parameter tableDelay Ramp BMS Setup Setback HWG Night Pumps Initial Setup Viewable and changeable control parametersSet Points Outdoor Reset Ramp Delay Advanced Setup SH/HWG Night Setback Minimum On/Off Time ModBusCascade Cascade OffsetPumps Service Notification Cycles Service NotificationService Notification in Months Service Notification Running Hours8Cascade Screen Service Cascade Screen9Graph ScreenParameter Selection Graph Screen11History ScreenLockout Faults Service History Screen13History ScreenRuntime History 14Service Screen Service ScreenSee the Crest User’s Information Manual for Instructions Maintenance Maintenance and annual startupService technician Owner maintenanceMaintenance Check boiler relief valve Flue vent system and air pipingCheck water system Check expansion tankCheck flame signal Check ignition ground wiringCheck all boiler wiring Check control settingsReview with owner Cleaning boiler heat exchangerCheck control module fuses TroubleshootingBefore troubleshooting Check the followingTroubleshooting Checking temperature sensors No Pump Cutoff Open Low WaterAnti-cycling Flame FailureIgnition Flame Out Sequence Flame OutRunning Unit was running and lost the flame Gas Valve / Relay FailureHigh Limit Open Auto ResetManual Reset High LimitFault Description Corrective Action Outlet Temp Louver Proving Sw OpenFlue Temp High Delta T HighParameters Saved Service BlkOutlet Temp High Rem Ctrl FltFlue Sensor Switch OpenSensor Open Sensor ShortedTemperature Burner SupplyDifferential Writing to Resets Try LaterInternal Fault Too ManyCRC Parameters Watch Dog ErrorNo Error Stored Write EEPromGas Supply Pressure Combustion Analysis ProcedureGas Valve Adjustment Or Obstruction2Gas Valve Adjustment Models 1.5 Gas valve adjustment procedurePage

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3, 2, 3.5, 2.5, 1.5 specifications

Lochinvar is a leader in manufacturing high-efficiency water heating solutions, and their Lochinvar 1.5, 1.3, and 1.0 models exemplify the company's commitment to innovation and performance. These advanced heating systems are designed to meet the diverse needs of commercial and residential applications, providing reliable hot water while ensuring energy efficiency and environmental sustainability.

The Lochinvar 1.5, 1.3, and 1.0 models incorporate cutting-edge technologies that set them apart from traditional water heaters. One of the most notable features is their use of high-efficiency condensing technology, which extracts maximum heat from the combustion process. This process allows the units to achieve high thermal efficiencies, often exceeding 95%, which not only reduces energy costs but also lowers greenhouse gas emissions.

In terms of design, Lochinvar's models are constructed with durable materials, ensuring longevity and reliability in demanding environments. The stainless steel heat exchanger is a key element that contributes to the durability and performance of the units. This material is resistant to corrosion and scale build-up, enhancing the lifespan of the heater and reducing maintenance requirements.

The Lochinvar 1.5, 1.3, and 1.0 models feature advanced control systems that provide precise temperature management and easy operation. The intuitive digital display allows users to monitor performance metrics, temperature settings, and energy consumption with ease. Additionally, these units are equipped with intelligent modulating gas valves that optimize fuel usage based on demand, ensuring efficient operation across various load conditions.

Safety is a priority in the design of Lochinvar's water heaters. The models come with built-in safety features, including flame failure detection, overheat protection, and venting safeguards. These systems work together to ensure the safe operation of the units, giving users peace of mind.

Another characteristic that makes the Lochinvar 1.5, 1.3, and 1.0 models popular among users is their compact design. These units are engineered to fit in tight spaces, making them ideal for installations where space is at a premium. Despite their small footprint, they deliver powerful performance, ensuring that users have access to the hot water they need.

In summary, Lochinvar's 1.5, 1.3, and 1.0 water heating models represent the pinnacle of efficiency, safety, and reliability. With their advanced technologies, durable construction, and user-friendly features, these units are an excellent choice for anyone seeking a high-performance water heating solution.