Toxalert GVU-2R User Manual
Page 3
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-CO
CONTROL UNITS
SENSOR
GVU-1
GVU-3
1
TB2-7
TB1-A7,B7,C7
2*
TB2-6
TB1-A6,B6,C6
4
TB2-1
TB1-A1,B1,C1
5
TB2-4
TB1-A4,B4,C4
**
TB2-5
TB1-A5,B5,C5
* Optional-power to sensor indication.
** Shield of cable (if used) should be connected at control unit only.
Make sure sensor end is taped and isolated from terminals or metal.
GVU SERIES PRODUCTS:
CONTROLLERS
GVU-1
Control unit for use with one sensor
GVU-3
Control unit for use with one to three remote sensors
GVU-6
Control unit for use with one to six remote sensors
GVU-12
Control unit for use with one to twelve remote sensors
GVU-18
Control unit for use with one to eighteen remote sensors
REMOTE SENSORS –
GVU-CO Remote carbon monoxide sensor
GVU–NO
2
Remote nitrogen dioxide sensor
GVU-CO
2
Remote CO sensor
GVU–VOC Remote smoke/air quality sensor
GVU-CO revised 4/14
TOXALERT INTERNATIONAL, INC., P.O. BOX 159, MOUND, MINNESOTA 55364 (952) 472-4541 FAX (952) 472-4960
Visit our website at www. toxalert. com
NOTE: Refer to Figure 2 and Tables 1 and 2. Use
shielded cable to interconnect sensor and
control unit if metal conduit is not used, or
if conduit also contains AC wiring.
1.) Measure distance between sensing unit and
control unit and select proper wire or larger
wire from Table 1.
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.
3.) Verify all wiring connections and turn power
on to sensor.
3. BURN -IN:
Burn-in period allows sensor to stabilize before
proceeding with alarm setting procedure.
1.) Verify sensor has power, sensor LED should
be flashing green or red.
2.) Allow systems to burn-in for a minimum of
72 hours with power turned on to sensor.
3.) When 72 hours have elapsed, proceed with
system checkout according to GVU series
control unit data sheet.
Sensor is factory calibrated to 50 ppm CO and
requires no field calibration for installation.
If the GVU-CO indicator LED is not flashing,
this indicates sensor failure, please contact your
local representative or TOXALERT International.