Lochinvar 50-210 service manual Anti-cycling

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Service Manual

1Service

Boost temperature

If a SH demand lasts longer than the programmed time delay setting (F9) and there have been no DHW 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 F8. The temperature range of this parameter is 0°F to 45°F. The default value is 0°F. This feature will be active if this parameter is set to anything other than 0°F.

Boost time

The boost time parameter sets the amount of time that must elapse with a SH demand before the water temperature set point will be increased. This parameter can be changed by the installer by accessing parameter F9. The time range for this parameter is 1 minute to 60 minutes. The default value is 20 minutes.

G: Anti-cycling

Anti-cycling time

Once a SH demand has been satisfied, a set amount of time must elapse before the control will respond to a new SH demand. The control will block the new heat demand and anti-cycling will be shown in the display until the time has elapsed or the water temperature drops below parameter G2. This parameter can be changed by the installer by accessing parameter G1. The time range for this parameter is 0 minutes to 40 minutes. The default value is 1 minute.

Inlet temperature differential for ending anti-cycling

The control will bypass the anti-cycling time if the water temperature drops too quickly. The control will use the water temperature the boiler was at when it shut off as the starting point. If the temperature drops below the temperature parameter the control will abort anti-cycling and allow the boiler to fire. This parameter can be changed by the installer by accessing parameter G2. The temperature range of this parameter is 0°F to 86°F. The default value is 10°F.

Ramp delay on/off

When the ramp delay on/off parameter is active, the ramp delay limits the boiler firing rate when a SH cycle has started. There are six (6) limiting steps used to limit temperature overshoot and short cycles, see FIG. 1-2 on page 21 of this manual. This feature can be turned on or off depending on the installation. This parameter can be changed by the installer by accessing parameter G3. The control range of this parameter is 0 = Off, 1 = Ramp Up Only, and 2 = Ramp Up and Ramp Down. The default value is 0.

When ramp delay is active, additional parameters for ramp delay operation will have to be adjusted. These can only be accessed by the optional PC software. See the Knight Wall Mount Smart System PC Program Instructions Manual for additional ramp delay parameter information.

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Contents Models 50 Contents Niosh stated First Aid Please read before proceedingHandling ceramic fiber materials When servicing boiler What is in this manual? ServiceMaintenance TroubleshootingService Near boiler pipingKnight wall mount display Smart Control Module Control inputsControl outputs General Operation How the boiler operatesHow the control module operates Sequence of operationSequence of operation OUT 123.8F129BLR SH 41% Rate Display panel menu access Display panel parameter access Temperature Data Parameter tableControl Circulation Service Temperature settings Viewable and changeable control parametersDHW settings Outdoor air resetData logging FunctionsShift reset curve Maximum SH set pointMinimum SH set point Outdoor air shutdownAnti-cycling Control modes SH controlling sensorSH source Boiler cascade addressCirculation pumps Service NotificationCascade offset Owner maintenance Maintenance Maintenance and annual startupService technician Maintenance Flue vent system and air piping Check water systemCheck expansion tank Check boiler relief valveCheck ignition ground wiring Check all boiler wiringCheck control settings Inspect ignition and flame sense electrodesCheck flame signal Cleaning boiler heat exchangerReview with owner Oiled bearing circulatorsTroubleshooting Before troubleshootingCheck control module fuses Check the followingNo Display No BurnerOperation Unit Does NotChecking temperature sensors Temperature ResistanceNoisy No PumpBoiler Pump System Pump DHW PumpSwitch/LWCO FlowFlame SequenceAnti-cycling No Flame IgnNo Flame RunningAuto Reset High LimitFan Low Fan Speed LowFan High Fan Speed HighSensor Open Sensor ShortedTemp O/Shoot Open Rem Ctrl FltParameters Progr Service Blk Watch Dog ErrorNo Error Stored Low 24 vacCombustion Analysis Procedure Gas Valve AdjustmentOr Obstruction Gas Supply PressureGas valve adjustment procedure 2Gas Valve AdjustmentPage

50-210 specifications

The Lochinvar 50-210 is a powerful and efficient boiler designed for residential and commercial heating applications. This model is a part of Lochinvar’s line of advanced heating solutions, known for their reliability, efficiency, and innovative technologies. The 50-210 offers a high thermal efficiency rating, ensuring that energy consumption is minimized while still providing excellent heating performance.

One of the standout features of the Lochinvar 50-210 boiler is its advanced control system. It is equipped with a user-friendly LCD display that allows easy access to system settings and real-time performance data. This technology enhances user experience, allowing for easy adjustments and monitoring, ensuring optimal performance based on specific heating needs.

The Lochinvar 50-210 is designed with a fully modulating burner, which means it can adjust its output to match the heating demand effectively. This feature not only provides superior comfort but also increases energy savings by preventing the boiler from running at full capacity when it's not necessary. Moreover, the modulating burner minimizes wear and tear, extending the lifespan of the unit.

In terms of safety, the Lochinvar 50-210 incorporates several features such as multiple temperature and pressure sensors, flame safeguard systems, and safety cut-off controls. These safeguard mechanisms ensure that the system operates safely and efficiently, providing peace of mind to users.

The construction of the Lochinvar 50-210 is robust, featuring high-grade stainless steel and a durable heat exchanger. This design helps resist corrosion, ensuring longevity and requiring minimal maintenance over the years. Additionally, its compact design allows for easier installation, making it suitable for various settings, even those with limited space.

Furthermore, the Lochinvar 50-210 operates quietly, which adds to its appeal for residential installations. Its environmental considerations are also noteworthy, with low emissions contributing to cleaner air quality.

Overall, the Lochinvar 50-210 is a sophisticated heating solution that blends efficiency, reliability, and advanced technology. With its user-friendly controls, modulating burner, safety features, and durable construction, it meets the heating demands of modern homes and commercial spaces, making it a top choice for those seeking dependable boiler performance.
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