Solid state economizer system, consisting of discharge air sensor or mixed air sensor, solid state enthalpy sensor, solid state temperature sensor, damper actuators, thermostat and solid state economizer logic module (20 pages)
AirScanTMiR Sensor. Warranties made by Honeywell Analytics with respect to this equipment will be voided if the equipment is not used and serviced in accordance with the instructions in this manual. If in doubt about a procedure, please contact Honeywell Analytics before proceeding.
If sensor is SUPER HEAT equipped (—15° then bandpass filtered to produce a narrow range of F and below), contact Honeywell Analytics for cable frequencies characteristic of the refrigerants’ (CFC/ recommendations.
AirScan iR - Industrial Installation shown in Figure 1, and always mount vertically. Locating the Sensor Penthouses: Multi-Coil (defrost one coil at a time) In this case Because each sensor can only “report” what it is the best location is usually in the center of the seeing at the moment, it is very important that the penthouse four or five feet above the grate.
Ceiling Hung Evaporators: When mounting Manning If the AirScan iR is to be used with the AirAlertTM96d, please call Honeywell Analytics for AirScanTMiR sensors near evaporators, mount the specific wiring instructions sensor no higher than two feet below the top of the evaporator coil.
CARB Compliance: To ensure continued compliance with CARB performance guidelines, calibrate the unit in the environment in which it will be used. Frequency of calibration can improve accuracy; Honeywell Analytics recommends calibration every 6 months.
AirScan iR - Industrial Pushbutton Operation, LED Indicators, • “Zero” adjustment pot — adjusts output calibration of the 4 mA nominal resting point. Adjustment Pots, and Test Points • “Span” adjustment pot — adjusts the 20 mA concentration level or unit span/sensitivity. The Manning AirScanTMiR has two internal push- •...
AirScan iR - Industrial LED Indicators and Blink Sequence • Fast blink indicates 4/20 mA loop failure or load resistance too high Green Source LED • One blink every 2 seconds indicates when source is energized and also that the source is not short circuited.
AirScan iR - Industrial LED Indicator Summary See LED indicators and blink sequence descriptions on page 11. Figure 7. LED symbols Figure 10. 4-20 mA Loop Test Mode Figure 8. Normal Run Mode Figure 9. Calibration mode...
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AirScan iR - Industrial Figure 11. Fault Indicator Error Sequences - part 1 Figure 12. Fault Indicator Error Sequences - part 2...
AirScan iR - Industrial Modes of Operation Normal run mode without output filtering This mode outputs a signal that nominally rests at 4 The Manning AirScanTMiR has various modes of mA and can range continuously from 0 to 27 mA. Any operation and calibration: subtle changes in sensor response will be sent to the •...
AirScan iR - Industrial 4/20 mA Loop Test To proceed to the next step in the mA test, press and hold S1 for 1 second or more until the yellow {22 mA full-scale and .5 mA fault check} “calibrate” LED is a medium double blink. See the following example.
AirScan iR - Industrial Calibration/Programming Modes: Exit: To program the “span” setting and exit this mode, press and hold S2 for 1 second or until the Refer to the Calibration section before proceeding. yellow “system” LED resumes the state before the calibration mode was initiated and the yellow Auto “ZERO”...
See the following example. Should this occur, please contact Honeywell Analytics for assistance! Figure 20. Non-calibrated sensor or loss of factory calibration...
AirScan iR - Industrial Non-Filtered Output Mode (no signal dead- Before continuing with the calibration procedure, determine which of the two Normal output modes is band) best for the control scheme. Filtered output holds a Start: Press and hold both the “zero” (S1) and “span” stable 4 mA signal within a dead-band range while (S2) buttons simultaneously for one second or until the non-filtered output allows the signal to be seen...
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AirScan iR - Industrial STEP 1 STEP 2 4-20 mA Output Calibration Zero Calibration This procedure calibrates the 4/20 mA output to This procedure sets the internal reference that match a PLC input converter or various devices that is indicative of 0 ppm of target gas. It MUST be interpret the 4/20 mA signal output to ensure the performed before proceeding or every other 4 mA output rests at a true 4 mA even with minor...
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AirScan iR - Industrial Press and hold the “span” button (S2) for 1 second or more until the yellow “calibrate” LED blinks fast and Figure 26. the yellow “system” LED is blinking slowly. See the following example. Figure 27. Span calibration Figure 25.
AirScan iR - Industrial Diagnostic Procedures Exit: Press and hold both the “zero” (S1) and “span” (S2) buttons simultaneously for 1 second or more until Simple Zero Test “system” LED is continuous ON. Unit should be ready This test will ensure the unit is calibrated for a true for long-term operation.
AirScan iR - Industrial Figure 30. During 4-20 mA loop test (22 mA high) w/error on output Figure 31. During 4/20 mA loop test (0.5 mA low) 0.5 mA Low Signal Output Test for Fault Conditions NOTE: The unit must be in the 4/20 mA loop (22 mA high) test to proceed with this test.
AirScan iR - Industrial Troubleshooting Sensor On-board Diagnostic System Electrical Interference It is possible to have the mA output fail during normal run mode. In some instances a mA output circuit This sensor has been designed to be highly resistant that is incorrectly setup can supply 4 mA to the to EMI/RFI using multiple stages of filtering and load reasonably well;...
AirScan iR - Industrial Error on 4/20 mA output or during 4/20 mA Gas Concentration Indicated With No Re- test 20 mA high frigerant Present The AirScanTMiR is designed to be quite specific to CFC/HCFC/HFC’s that are colorless, odorless gases which can’t be sensed by humans at low levels.
Periodically, sensors should be exposed to refrigerant sample and the results logged. For proper operation it is essential that the test and calibration schedule be adhered to. Honeywell Analytics recommends the following maintenance schedule: • Calibration should be performed with certified calibration gas every six months.
IT IS UNDERSTOOD AND AGREED THAT package or an equivalent. The product will be repaired HONEYWELL ANALYTIC’S LIABILITY, WHETHER IN or replaced if it is determined by Honeywell Analytics CONTRACT, IN TORT, UNDER ANY WARRANTY, IN that the part failed due to defective materials or NEGLIGENCE OR OTHERWISE SHALL NOT EXCEED workmanship.