Toxalert GVU-1D User Manual

TM
DATA
TOXALERT
CO / CO
/ NO2 / OR VOC MONITOR MODEL GVU-1
2
SHEET
VEHICLE EXHAUST GAS DETECTOR
GENERAL DESCRIPTION:
The GVU-1 ventilation control monitor combines toxic gas sensing and time-based fan control modes in an all solid­state, low maintenance, cost effective product.
The GVU-1 controller consists of the power supplies, solid state clocks, time delays, and output relays. It can con­tinuously monitor one of the following Toxalert sensors: GVU-CO carbon monox­ide sensor, GVU-CO GVU-VOC diesel smoke/air quality sensor. See last page for ordering informa­tion. (Please refer to applicable sensor data sheets).
TIME CONTROL:
The systems hourly timeclock outputs to the fan-on relay once per hour causing it to energize. The on time of the fan-on relay is user adjustable, in one minute increments from 1 to 8 minutes. The hourly timeclock operates in this manner irrespective of sensor reading, and may be disabled, if desired. To disable the hourly clock operation, place switch S3 to RST (RESET) position.
carbon dioxide sensor, GVU-NO2 nitrogen dioxide sensor or
2
VENTILATION CONTROL:
Should a high toxic concentration occur (above user adjustable alarm level), a 30 second delay timer will start. Should the concentration persist through the delay period, the “alarm” clock is activated. The “on” time of this clock is user adjust­able in discrete settings from 1 to 8 minutes and its setting is independent of the hourly clock setting. Upon activation of the “alarm” clock, the “fan-on” relay energizes and remains energized until the “alarm clock” times out. Should the concentration still be above the alarm level, the “fan-on” relay shall remain ON and the alarm relay shall energize. This condition is maintained until the concen­tration drops.
In the event of a power failure, the control unit sets itself to an alarm condition upon power restoration. Thus, fan activation is assured, clearing out any accumu­lated toxic gases.
FEATURES
User adjustable alarm setting
User adjustable minimum fan run time
User adjustable 2nd stage activation
Completely solid-state for long life
Controller LED indicators for high
concentration signal and fan on
Operating range meets OSHA std. 1910.1000.
UL listed upon request.
Automatic fan start-up upon power r estoration
following power outage if desired.
User adjustable clock activation of fans, if desired.
NEMA 1 enclosure standard- others available.
OPTIONS
GVU-1A
(Control unit w/ integral CO sensor)
U
® L
Underwriters Laboratories, Inc. ®
LISTED
Audible alarm with silence switch
Power on indicator
TOXALERT INTERNATIONAL, INC., P.O. BOX 159, MOUND, MINNESOTA 55364 (952) 472-4541 FAX (952) 472-4960
Visit our website at www. toxalert. com
Fan on indicator
High gas concentration indicator
SPECIFICATIONS
• Automatic fan run upon power restoration
• Input power: 120VAC, 60 Hz, 1A (fused)
• Relay contacts: 24VAC, 2A resistive, 1.5A inductive
• Timers: 30 second delay on
Min. Fan Run Time 1-8 minutes Hourly Fan Run: 0-8 minutes
INSTALLATION INSTRUCTIONS
1. INTRODUCTION
Your TOXALERT ventilation control system incorpo­rates the latest in solid state technology to give you maximum reliability and performance. The system alarm setpoint can be adjusted to activate fans upon detection of an unsafe gas concentration such as carbon monoxide, carbon dioxide, diesel smoke. In addition, a user definable hourly repeat cycle is provided, allowing time based, as well as concentration based fan activa­tion. In both modes of fan control, the “on “ time is user adjustable from 1 to 8 minutes in one minute increments. For optimum performance, install, burn-in, and check out your TOXALERT system exactly as instructed. If your TOXALERT can’t be calibrated or fails checkout, please contact your local representative or TOXALERT International for servicing.
• Enclosure: Nema 1 standard, others available
Dimensions: 12”H x 12”W x 4”D (305mm x 305mm x 102mm)
Finish: Gray enamel Weight: 8 lbs. (3.6kg)
FIG. 1
2. INSTALLATION
Locate a mounting location for the sensor away from direct fresh air intakes, exhaust and/or supply fans, and mount vertically on wall or support column normally 5 to 6 feet above floor (NO2 and CO2 sensor height may differ per application). Mount GVU-VOC sensor in ceiling. Refer to figs. 1, 2 and 3, to install and connect the TOXALERT control unit and sensors as following. (Please refer to job specific documentation for more detailed wiring options).
CONTROL UNIT-
1) Unlock and open enclosure cover.
2) If necessary, cut access holes for wiring in enclosure sides directly opposite terminal block TB2 and slightly below terminal block TB1. First, remove the four screws that secure chassis plate to enclosure and then carefully remove plate and attached circuit board; cut holes and remove metal chips from enclo­sure.
3) Mount enclosure with four screws.
4) Reinstall and secure chassis plate to enclosure with the four screws
FIG. 2
SENSORS- Please refer to applicable sensor data sheets
for mounting directions.
FIG. 3
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