Lochinvar 3.5, 2.5 service manual 2Main Menu Screen

Page 52

Installation & Operation Manual

10 Operating information

Use the Main Menu Screen (FIG. 10-2) to access the screens necessary to set temperatures, operating conditions, and monitor boiler operation.

The Crest is equipped with a SMART TOUCH control system. All menu options are accessed by touching the screen with your finger or a stylus from a PDA.

Figure 10-2Main Menu Screen

The Main Menu Screen allows navigation to nine (9) additional screens which are used to set temperatures, operating conditions, and monitor boiler operation. These screens are as follows:

•Home - Navigates back to the Home Screen.

•Setup - Allows access to 12 other screens for the adjustment of the control parameters.

•Cascade - Shows the status of multiple boilers connected together in a cascade arrangement (Leader only).

•Modulation - Shows the status of the two (2) gas train systems used in the boiler.

•BMS - Shows the information from a Building Integration System.

•Pumps - Allows the installer to configure the boiler, system, and DHW pumps.

•History - Shows the operating and fault history of the control module.

•Graphs - Allows the selection of items to be graphed on a chart.

•Service - Allows the installer to control the fan speed of the individual combustion systems for the purposes of combustion analysis. Service Mode will override all other heat demands, however, all limits will remain active.

Reference the Crest Service Manual for more information regarding the nine (9) accessible screens.

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Contents Save this manual for future reference Contents When servicing boiler Please read before proceedingCrest How it works BlowersCrest How it works Models 1.5 2.0 2.5 3.0 Ratings Crest Ahri RatingInstallation must comply with Recommended clearances for service accessDetermine boiler location Before locating the boiler, checkProvide air openings to room Flooring and foundationVent and air piping Prevent combustion air contaminationProducts to avoid When using an existing vent system to install a new boilerAreas likely to have contaminants When removing a boiler from existing common vent system Remove boiler from wood pallet 7Combustion Air from Outside Single Opening Minimum Recommended Combustion AIR Supply to Equipment Room Direct venting General ventingOptional room air Install vent and combustion air piping Air inlet pipe materialsApproved Stainless Steel Vent Manufacturers Make Model Air intake/vent connectionsRemoving from existing vent Common venting Vertical direct venting Vent/air termination verticalDetermine location Prepare roof penetrationsMultiple vent/air terminations 4Alternate Vertical Terminations with Multiple BoilersSidewall direct venting Vent/air termination sidewallPrepare wall penetrations 2Clearance to Doors and WindowsRoom air 4Multiple Vent Terminations must also comply with FigureHydronic piping Model Circulator sizing20F 40F 60F Near boiler piping components Ball Valve Multiple Boilers Common Header Primary / Secondary Flow For all equipment and detailing required by local codes AIR Seperator Drain Port Typical System Supply Sensor Gas connections Connecting gas supply pipingModel Gas Inlet Size Natural gas Propane GasGAS Piping Size Chart Check inlet gas supplyGas valve replacement Gas PressureInstallation must comply with Field wiringLine voltage connections Enable Outdoor temperature sensorLouver proving switch Low voltage connectionsAuxiliary switch 1 Alarm contactsWiring of the cascade System supply sensorWiring FieldCondensate disposal Condensate drainFreeze protection when used Start-upCheck/control water chemistry Fill and test water systemCheck for gas leaks Check thermostat circuitsInspect condensate system Inspect/check condensate lines and fittingsFinal checks before starting the boiler Start the boilerIf boiler does not start correctly Check system and boilerFor Your Safety Read Before Operating Set space heating operation Gas Natural Gas Propane ValveConfiguration of the cascade Verify HWG circulator mode Set HWG target temperatureSet clock Operating information GeneralProtection features Boiler temperature regulation Outdoor reset operation, if usedCascade Sequence of operation Crest control module Home Screen2Main Menu Screen Maintenance Maintenance and annual startup Service technicianOwner maintenance See the Crest User’s Information Manual for InstructionsMaintenance Flue vent system and air piping Check water systemCheck expansion tank Check boiler relief valveCheck ignition ground wiring Check all boiler wiringCheck control settings Check flame signalCleaning boiler heat exchanger Review with ownerHandling ceramic fiber materials Niosh stated First AidDiagrams Integrated Control2Wiring Diagram
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3, 2, 3.5, 2.5 specifications

The Lochinvar 2, 3, 3.5, and 2.5 models are a standout lineup in the realm of commercial and residential water heating solutions. Known for their advanced technology and high efficiency, these units cater to a wide range of applications, ensuring optimal performance and reliability.

One of the key features of the Lochinvar models is their robust construction. Each unit is designed to withstand rigorous operational demands while providing excellent thermal efficiency. They are equipped with stainless steel heat exchangers, which offer superior resistance to corrosion and extend the lifespan of the equipment. This durability is essential for both commercial and residential settings where demand can vary significantly.

The Lochinvar 2, 3, 3.5, and 2.5 models utilize innovative control systems that enhance their operational efficiency and user convenience. The built-in Smart Control technology allows for easy monitoring and adjusting of system parameters, ensuring that users can maintain optimal performance with minimal effort. This feature is especially beneficial in commercial settings where large volumes of hot water are required, as it enables users to effectively manage their energy consumption.

Energy efficiency is another hallmark of the Lochinvar lineup. With high-efficiency ratings, these models help reduce energy costs significantly, making them an environmentally friendly option for heating water. The use of advanced combustion technology ensures that these units can deliver maximum heat output with minimal fuel consumption.

Additionally, the Lochinvar models are designed with safety and reliability in mind. They feature multiple safety controls and diagnostics that alert users to potential issues before they escalate, providing peace of mind. The integration of advanced venting options allows for flexible installation configurations, accommodating various building layouts and space requirements.

In summary, the Lochinvar 2, 3, 3.5, and 2.5 models define modern water heating technology with their combination of durability, efficiency, and advanced features. With their innovative design and user-friendly controls, they meet the demanding needs of both commercial and residential users, making them a top choice in the water heater market. Whether for new installations or replacements, these units deliver reliable performance and value.
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