MODEL FIII-SERIES CONTROL INSTALLATION ... - Agencespl.com

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REV 1.1 FIII SERIES CONTROL FIGURE 8: Interlocks and Boiler Status Highest priority is farthest to left as viewed Spare for user or Factory Low Water Cutoff Variable Frequency Drive Gas Pressure (High & Low) Spare for user or Factory Operator Water Flow Switch UV Sensor Air Switch Priority 1 2 3 4 5 6 7 8 The Highest priority interlock that opens will be displayed as the fault. Low Voltage Interlocks, 24VAC NOTE: Spare interlocks can be used as REMOTE interlocks FACTORY:High voltage (120VAC) Interlocks and Firing status Page 14
REV 1.1 FIII SERIES CONTROL Calibration A detailed startup and walkthrough of the calibration and H-Net setup is provided in the Programming Examples manual. The calibration of the FIII-series boiler should only be performed by a licensed technician. To enter the calibration menus, place the S2 switch on the main control board to the CAL position. Be sure to set this switch back to NORM when the calibration is complete, otherwise no external control inputs will work (except T1-T4), the display will always indicate CALIBRATE and some of the runtime temperatures will not be displayed. The Minimum Input setting, the Maximum Output setting, and the Ignition setting can be adjusted in the calibration displays. The values can be changed while running ONLY IN MINIMUM FIRE (any, but only one of the T inputs closed). Prior to ignition, the values may be changed, but the blower will not operate. Press the arrow keys until MINIMUM is shown in the display, along with the minimum percentage value at which the boiler is to run at min fire. While in Standby (no call for heat on inputs), the minimum percent may be preset. To set the minimum rate while running, any (1), and only (1) of the (T) inputs must be closed in order to set the boiler to MINIMUM fire. Press the SELECT key for approximately 1 second. The Percentage value will start flashing, indicating that it can be adjusted. Adjust the Minimum value to the desired setting using the arrow keys. The Minimum setting is clamped to its lowest rated setting and cannot be adjusted below this. Once you are done with this setting, press the SELECT key until the value stops flashing. The new setting is now saved. Press the Arrow key to select the IGNITION percent. The Blower speed will be set here to provide the rate for ignition. While in Standby (no call for heat on inputs), the Ignition percent may be preset, before firing the boiler. To set the ignition rate while running, any (1), and only (1) of the T inputs must be closed Pressing the SELECT key here will cause the IGNITION setting to flash and the boiler will ramp to the ignition setting. Adjust it using the arrow keys and then press the SELECT key until the value stops flashing. The new setting is now saved. Page 15
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MODEL FIII-SERIES CONTROL INSTALLATION ... - Agencespl.com

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