Toxalert GVU-VOC - Manual (Page 3)

2.) Run wiring between control and sensing
unit and into enclosure through access
holes. Connect wires from terminal
blocks in sensing unit to control unit per
Table 2 and GVU series control unit
data sheet.
5. START-UP
1.) Verify all wiring connections are correct
and are tight.
2.) Apply power and note the status LEDs.
Initially the LEDs will flash in sequence
(OK, LOW, MID, HIGH and AUTO)
to indicate a successful start-up. The
device will then enter a three minute
warm-up cycle and this is indicated by a
flashing AUTO LED and lit OK LED.
This mode will continue for three minutes
until the sensor has reached operating
temperature.
3.) After the initial warm-up period, the device will enter normal operation. This will be indicated by
the AUTO LED being lit and also one pollution level LED being lit (OK, LOW, MID or HIGH).
Note that the sensor is calibrated at manufacture to be suitable for use in average room conditions. The
sensor filter will accumulate dust over a period of inactive time and the sensor must be allowed to burn-
in before proper operation. This time will vary depending on the storage time, but the unit will be suit-
able for pre-commissioning after about 30 minutes.
4.) Replace cover.
PARTIAL LIST OF CONTAMINATES DETECTED BY TOXALERT INTERNATIONAL GVU-
VOC SENSOR.
CHEMICAL COMMON SOURCE
Ethylene Diesel exhaust
Benzene, Toluene, Xylene Diesel exhaust, solvents and motor fuels
Methane Diesel exhaust, decomposition and sysnthesis
Formaldehyde Diesel exhaust, disinfectants and preservatives
Methyl Ethyl Ketone Solvents and cleaning products
Acetone Solvents and organic synthesis
Ethyl Alcohol Solvents and liquor fermentation
Hydrogen Used in synthetics
TOXALERT INTERNATIONAL, INC., P.O. BOX 159, MOUND, MINNESOTA 55364 (952) 472-4541 FAX (952) 472-4960
Visit our website at www. toxalert. com
TABLE 1
AWG DO NOT EXCEED
#22 Wire 500 Ft. Sensor to Controller
#20 Wire 800 Ft. Sensor to Controller
#18 Wire 1300 Ft. Sensor to Controller
#16 Wire 2000 Ft. Sensor to Controller
TABLE 2 WIRING CONNECTIONS
GVU-VOC CONTROL UNITS
SENSOR GVU-1 GVU-3
PWR TB11-H(24VAC) TB3-H (24VAC)
COM TB11-N (COM) TB3-N (COM)
NO TB2-1 TB1-A1, B1, C1
COM TB2-7 TB1-A7, B7, C7
** TB2-5 TB1-A5, B5, C5
** Shield of cable (if used) should be connected at control unit only.
Make sure sensor end is taped and isolated from terminals or metal.
Continued on Page 4
TABLE 3