Costar 24VC-e Manual
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Costar 24VC-e Manual

Carbon monoxide (co) detecting ventilation fan controller
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Carbon Monoxide (CO)
Detecting Ventilation
Fan Controller
Model COSTAR® 24VC-e
Single Relay
Part No.905-0000-09
Replacement Sensor Module
Part No.905-0001-04
1. INFORMATION
Your COSTAR
®
24VC-e carbon monoxide detecting ventilation fan controller is designed for use where
ventilation fans are needed to prevent dangerous accumulations of carbon monoxide (CO) from engine
exhaust or combustion appliances. The COSTAR
only when required to maintain good air quality while enhancing safety by alarming if dangerous CO
conditions are detected. The COSTAR
microcomputer-based CO detection circuit. The microcomputer provides overall supervisory control,
measures CO level and calculates CO dose. It also self-tests the internal electronic circuit and signals a
fault warning if a malfunction is detected. The CO sensing element is replaceable every 3 years. Each
individual sensor is factory calibrated; no field adjustments are necessary or possible except for sensor
replacement. A signal indicating sensor replacement is given when necessary.
There is a 12 Year Main Printed Circuit Board (PCB) end-of-life. At that time the customer will need to
replace the PCB in the case. Sixty days prior to end of life, the unit will beep 2 short beeps every 15
seconds until replaced. After warning for 60 days, the unit will go into fault with all LED's flashing (fans will
run continuously).
In-Field carbon monoxide testing capability is required. When the test button is pressed, the unit goes
into an accelerated test mode for about 3 minutes and will beep 3 short 100 millisecond beeps once
before going into the test mode. In this mode, there are no delays associated with the fan or siren. This
allows someone to spray some CO on the sensor and see how it responds. A detailed procedure for the
testing method is attached as Appendix A - (In-Field CO Testing QCP-190.10.5110). After testing, the unit
returns to normal operation and will beep 2 short 100 millisecond beeps before returning to normal
operation.
2. IMPORTANT!
When installing your COSTAR
a. Read these instructions carefully. Failure to follow them could damage the COSTAR
cause a hazardous condition
b. Check the ratings given in the following instructions, in Table 1A-COSTAR
Features, and on the COSTAR
application
c. Installer must be trained and experienced in control systems
d. After installation is complete, check out the operation of your COSTAR

Section 7, Power-Up and Test

Page 1 of 12
®
24VC-e lowers operating costs by activating the fan
®
24VC-e features an electrochemical sensor and a
®
24VC-e:
®
24VC-e to make sure the COSTAR
®
24VC-e Product
®
24VC-e is suitable for your
®
24VC-e as instructed in
24VC-e Manual Rev (02/14/2017)
®
24VC-e or

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Summary of Contents for Costar 24VC-e

  • Page 1: Section 7, Power-Up And Test

    Part No.905-0001-04 1. INFORMATION Your COSTAR ® 24VC-e carbon monoxide detecting ventilation fan controller is designed for use where ventilation fans are needed to prevent dangerous accumulations of carbon monoxide (CO) from engine ® exhaust or combustion appliances. The COSTAR...

  • Page 2: System Operation

    5. POWER REQUIREMENTS WARNING a. Your COSTAR ® 24VC-e is designed for use with a 24 VAC power supply and a 24 VAC relay (control circuit) voltage. Use of higher voltages can damage your unit or cause improper operation or a hazardous condition. Control relay contact K1-K2 is rated at 5 amps, 24 VAC. If a...

  • Page 3: Troubleshooting

    24VC-e will begin to beep once every 15 seconds. If the sensor is not replaced within 60 days, the COSTAR ® 24VC-e will turn the fan ON and goes into a fault mode. It cannot be reset until the sensor is replaced. a. Purchase a replacement CO sensor module from your supplier or from AVCS ®...
  • Page 4 (See Figure 2) 3. Disconnect the fan control circuit from terminals K1 and K2. Measure the resistance between terminals K1 and K2 with an ohmmeter. Circuit should be open. If circuit is not open, return COSTAR ® 24VC-e to your supplier or AVCS (call for a Return Authorization Number) for repair or replacement ®...

  • Page 5: Warranty

    This warranty extends only to the original purchaser of this product. The expressed warranty above constitutes the entire warranty of AVCS with respect to COSTAR ® products and IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR OTHER WARRANTY OF QUALITY.
  • Page 6 - 20°C to 55°C (- 4°F to 131°F) 7.5% to 95% Relative Humidity Figure 1: Typical Installation of COSTAR® 24VC-e to All 3 Relays *Relay contacts in closed position, unit operating in clean air environment. When CO is detected, or power fails relay contacts open and fan turns on.
  • Page 7 ® Figure 2: COSTAR Model 24VC-e Figure 2 A Correct wiring termination Figure 2B Removal / Replacement t of Sensor Module Sensor Must face in towards main board Connector key must match Page 7 of 12 24VC-e Manual Rev (02/14/2017)
  • Page 8 ® Figure 3: COSTAR Model 24VC-e Figure 3A. Case Backside Mounting bracket Sensor Module Terminal Block Main PCB Figure 3B: Case Frontside with Door Open Page 8 of 12 24VC-e Manual Rev (02/14/2017)

  • Page 9: Product Features

    Revision: N/C Revision Date: 05/06/14 MSO Date: 09/23/2013 Written by: MSO, AS President Approval: ___________________ Reviewed by VP Quality Approval: ________________ Subject: Procedure for In-Field CO Testing COSTAR® Model 24VC-e Ventilation Controller 1.0 PRODUCT FEATURES Description Signals [CO] /Comment Power/Standby/ Normal:...
  • Page 10 3.1 - This procedure affects any field personnel who inspects and/or certifies COSTAR® Model 24VC-e Ventilation Controller. 4.0 RESPONSIBILITY: 4.1 - It is the responsibility of the end user and field personnel of COSTAR® Model 24VC-e Ventilation Controller Distributors to test the unit as required by the local inspector and/or standard. 5.0 ASSOCIATED MATERIALS 5.1 - 1,850 ppm CO in spray can (UL listed C6 CO Detector Tester Solo, Tel:...
  • Page 11 7.9 - After the unit has recovered, it can be retested again within 1-2 minutes—if needed. 7.10 - When a COSTAR® Model 24VC-e Ventilation Controller unit fails to activate fan and alarm, after repeating the CO tests, two more times, the Sensor Module MUST BE REPLACED. Make sure that there is sufficient pressure in the CO can when repeat tests.
  • Page 12 8.0 FIGURES Figure 1. Cover of the 24VC-e unit open, showing the PC Board Figure 2. Pressing of the TEST button to activate the Test Mode Figure 3. The cover is closed with CO nozzle inserted all the way through one of the TOP holes found on the RIGHT SIDE of the case Figure 1.

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