Lochinvar 1 service manual Outdoor Reset Parameters Screen

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Service Manual

1 Service

Outdoor Reset Parameters Screen:

When the outdoor air sensor is installed, the control will calculate the water temperature set point based on the outdoor air temperature. As the outdoor air temperature drops the water temperature set point increases. This feature allows the boiler to be more efficient in periods of mild weather.

The Outdoor Reset Screen allows access to eight (8) parameters. Those parameters are as follows:

•Reset Temperature at Low Outdoor Temperature - When the outdoor air temperature drops to its minimum setting, the water temperature will be at this point, if the user set point parameter is set higher. This parameter can only be changed by the installer. The temperature range of this parameter is 0° to 190°F. The default value is 180°F.

•Reset Temperature at High Outdoor Temperature - When the outdoor air temperature rises to or above its maximum setting, the water temperature will be at this point. This parameter can only be changed by the

installer. The temperature range of this parameter is 32° to 180°F. The default value is 100°F.

•Outdoor Temperature at High Reset Temperature - When the outdoor air temperature drops to this point, the water temperature will be at its maximum setting. However, if the user set point is set lower, the water temperature will be limited by the user set point. This parameter can only be changed by the installer. The temperature rane of this parameter is -22° to 70°F. The default value is 25°F.

•Outdoor Temperature at Low Reset Temperature - When the outdoor air temperature rises to or above this point, the water temperature will be at its minimum setting. This parameter can only be changed by the installer. The temperature range of this parameter is 25° to 86°F. The default value is 70°F.

•Outdoor Shutdown Set Point - When the outdoor air temperature rises above this point, the control will block all system heat calls. The Hot Water Generation call will be unaffected. This parameter can be changed by the user or the installer. The temperature range of this parameter is 32° to 122°F. The default value is 70°F.

•Outdoor Shutdown Differential - The number of degrees below the outdoor shutdown set point that the outdoor air temperature must go before the boiler will respond to a system heat call. This parameter can be changed by the user or the installer. The temperature range of this parameter is 0° to 90°F. The default value is 10°F.

•Boost Time - If the boost increment parameter is set to active, the boost time parameter will set the amount of time that must elapse with a system heat call before the water temperature set point will be increased. This parameter can be changed by the user or the installer. The time range for this parameter is 0 minutes to 250 minutes. The default value is 20 minutes.

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Contents
Models 1.0, 1.3, Contents Handling ceramic fiber materials Niosh stated First AidMaintenance ServiceTroubleshooting Service Near boiler pipingSync display Control inputs BoardSecondary Smart Touch Control Module Primary Control outputsHow the control module operates General OperationHow the boiler operates Sequence of operationSequence of operation Sequence of operation space heating and HWThis table lists the parameters and where to access them Parameter tableOutdoor Reset Viewable and changeable control parameters Status ScreenService Details Screen Service Main Screen Setup Screen Service/Setup Parameters Screen Service Set Point Parameters Screen Outdoor Reset Parameters Screen Service Night Setback Parameters Screen Cascade Parameters Screen Cascade OperationPumps Parameters Screen 10Vdc 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 Inspect boiler area Address reported problemsClean condensate trap Inspect boiler interiorCheck water system Flue vent system and air pipingCheck expansion tank Check boiler relief valve Check control settings Check ignition ground wiringCheck all boiler wiring Inspect ignition and flame sense electrodesCleaning boiler heat exchanger Check flame signalReview with owner Test procedure Test low water flow conditionsTroubleshooting Alarm ScreenCheck the following Before troubleshootingCheck control module fuses Operation No DisplayNo Burner Unit DoesChecking temperature sensors Temperature ResistanceOperation Boiler Pump NoisyNo Pump System PumpDrain Blocked Flow SwitchCondensate Flame outFlame Lost Light cont’dWhile Running Troubleshooting Temp SW Automatic ResetHigh Limit / HEX Blower RPM’sSensor Open Louver Proving SwitchToo High Sensor ShortedLow Resets Try LaterAir Flow Too Flap ValveWriting to Internal FaultNo Error Stored MemosOr Obstruction Combustion Analysis ProcedureGas Valve Adjustment Gas Supply PressureModel Gas valve adjustment procedureModels 1.3
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