Lochinvar 1.5, 3.5, 2.5 service manual Ramp Delay

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1 Service

Outdoor Air Shutdown Differential

The outdoor air shutdown differential parameter is the number of degrees below parameter C5 the outdoor air temperature must go before the boiler will respond to a SH demand. This parameter can be changed by the installer by accessing parameter C6.

Service Manual

Shift OA Reset Curve

The shift reset curve parameter shifts the actual set point above or below the calculated set point by the number of degrees in this parameter. This parameter can be changed by the installer by accessing parameter C9.

Boost Time

The boost time parameter sets the amount of time that must elapse with a SH demand before the water temperature calculated set point will be increased. This parameter can be changed by the installer by accessing parameter C7.

Boost Temperature

If a SH demand lasts longer than the programmed boost time delay setting (C7) and there have been no HWG demands, the control will increase the water temperature set point by the amount in this parameter. If the SH demand continues through another time period, the set point will be increased again. This will continue until either the SH demand ends, a maximum of 20 increases has occurred, or the maximum set point has been reached. Once the SH demand has been satisfied the set point will revert back to its calculated setting. The boost temperature can be changed by the installer by accessing parameter C8.

D: Ramp Delay

Ramp Delay (Enable / Disable)

This parameter allows the installer to enable or disable the SH ramp delay by accessing parameter D1.

SH Ramp Delay

The SMART TOUCH control can be programmed to limit the firing rate for a fixed period of time at the start of a space heating demand. There are six (6) possible limits, each with their own time delay. The first limit applies as soon as the burner starts. Once its time delay expires, the second limit is applied and its timer begins. The control steps through these limits until the 6th (sixth) limit expires. Note, however, that the 6th limit will also limit the rate for the rest of that heat demand. The installer can adjust the firing limits and time delays by accessing parameters D2 through D13.

Figure 1-7Ramp Delay Interval

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Contents Models 1.5 2.0 2.5 3.0 Contents Niosh stated First Aid Please read before proceedingHandling ceramic fiber materials When servicing boiler What is in this manual? ServiceMaintenance TroubleshootingService Boiler pipingHome Screen Smart Control Module Control inputsControl outputs StripAccess modes General OperationHow the boiler operates How the control modules operateTo adjust and save parameters reference FIG Sequence of operation Sub Parameter Name See Min Max Default User Installer Value AccessParameter table MenuDelay Ramp BMS Setup Setback HWG Night Pumps Set Points Initial SetupViewable and changeable control parameters Outdoor Reset Ramp Delay Advanced Setup SH/HWG Night Setback ModBus CascadeCascade Offset Minimum On/Off TimePumps Service Notification Service Notification in MonthsService Notification Running Hours Service Notification CyclesService Cascade Screen 8Cascade ScreenGraph Screen 9Graph ScreenParameter SelectionService History Screen 11History ScreenLockout Faults13History ScreenRuntime History Service Screen 14Service ScreenMaintenance 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 ownerTroubleshooting Before troubleshootingCheck the following Check control module fusesTroubleshooting Checking temperature sensors No Pump Low Water Cutoff OpenIgnition Anti-cyclingFlame Failure Running Flame Out SequenceFlame Out Gas Valve / Relay Failure Unit was running and lost the flameAuto Reset Manual ResetHigh Limit High Limit OpenFault Description Corrective Action Louver Proving Sw Open Flue Temp HighDelta T High Outlet TempService Blk Outlet Temp HighRem Ctrl Flt Parameters SavedSwitch Open Sensor OpenSensor Shorted Flue SensorDifferential TemperatureBurner Supply Resets Try Later Internal FaultToo Many Writing toWatch Dog Error No Error StoredWrite EEProm CRC ParametersCombustion Analysis Procedure Gas Valve AdjustmentOr Obstruction Gas Supply PressureGas valve adjustment procedure 2Gas Valve Adjustment Models 1.5Page
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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.