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Instruction Manual: COSTAR® 9SS, 9V CO Safety Shutoff
QGI P/N 099-0043-01 REV 11/07/01
Page 2 of 4
This device may not activate at low CO levels. The Occupational Safety and Health Association (OSHA) has established that
continuous exposure to levels of 50 ppm should not be exceeded in an 8-hour period. This detector will respond to CO
concentrations of 50 ppm or greater. Individuals with medical problems may consider using detection devices with lower CO
detection capabilities.
Never spray the unit with water or cleaning solutions of any kind. They may damage the detector. Ventilate the area where unit
is installed when household cleaning supplies or similar contaminants are used. Do not paint the unit.
Test your detector at least once a week during periods of operation. Manufacturer recommends replacement of detector six years
after date of purchase.
A. INSTALLATION
CAUTION: Before installing your carbon monoxide safety shutoff product, review your appliance owner’s
manual for the location of the cast control valve and the thermocouple.
1. Disconnect the thermocouple from the control valve on your gas appliance.
2. Thread the thermocouple interrupter provided into the thermocouple inlet of the control valve until it just
bottoms out in the valve. DO NOT OVERTIGHTEN. (Figure 1)
3. Insert the terminal connections at the end of the FET assembly into the contacts of the thermocouple
interrupter with the arrow on the FET assembly pointing toward the control valve. (Figure 1)
4. Thread the thermocouple into the rear of the thermocouple interrupter and tighten.
5. Remove the COSS unit from the sealed bag.
6. Remove the plastic cover of the unit from its base.
7. Locate your unit on any wall, ceiling, or other smooth surface within cord’s reach (approx. 6 ft.) of the
appliance. Connect the COSS plug wire to the detector.
8. Connect the 9-volt battery as shown in Figure 2.
9. Re-attach the cover back onto its case.
WARNING: Do not run the unit behind heavy draperies or furniture, within 5-feet of any cooking appliance or in
direct sunlight.
B. OPERATION
CONDITION RED L.E.D. BEEPER
Normal Flash every 30 seconds No Beep
Low Battery Flash every 30 seconds Beep every 30 seconds
Fault Condition 2 flashes every 30 seconds 2 beeps every 30 seconds
Shut Off 2 flashes every 30 seconds Double Beep every 3 seconds
TESTING THE SYSTEM:
Push and hold the test button until “beep” is heard, then release button. All functions are tested for correct operation.
At the end of the test, the unit will sound a three second test confirmation “beep” and assume normal operation.
Appliance will shut down following normal test operation. Appliance must be re-lit to restore function.
WARNING: Abnormal test function will result in appliance not being shut down. Cause for abnormal test must
be investigated.
NORMAL OPERATION: