Toxalert GVU-1D - Manual (Page 4)

deactivated. If S3 is in the OPR position and all S4
switches are down (off), K2 will operate 8 minutes
each hour.
B) Minimum Fan Run Time (S5- Alarm setting)
Dip switch S5 controls the minimum time the K2
relay is activated once an alarm condition has been
acknowledged by the controller. With number “1”
switch of S5 in the up position, the minimum fan run
time (K2 relay closed) is one minute. With number
“2” switch of S5 in the up position, the minimum run
time is 2 minutes, and so on, up to 8 minutes. The
switches are not additive, and if more than one switch
is in the up position, K2 operates the number of
minutes of the lowest numbered switch of S5 in the
up position. If all are in the down position, minimum
run time defaults to 8 minutes.
5. ALARM SETTING PROCEDURES
All sensors are factory calibrated for their specific
setpoints. Periodic calibration is required and per-
formed at the sensor. Please refer to the individual
sensor instruction manual (supplied with each sensor)
and calibration instruction sheet (supplied with
calibration kits, available separately). Annual sensor
calibration check is recommended as a minimum.
6. CHECKOUT
Refer to figure 1 and table 2 to check out installation
as follows:
1).Turn power off
2).Disconnect alarm input wires from sensors at
TB2-1.
3).Set alarm timer (S5) to 2 minutes and hourly
timer (S4) to 1 minute, and S2 to OPR.
4).Set power switch S1 to PWR ON. Set OPR/RST
switch S3 to RST and back to OPR; note time.
5).Check that the LED indicators CR3 and CR4 and
the fans are off.
6).Set TST/OPR switch S2 to TST, checkout that the
CR3 LED indicator is ON. After 30 sec. check
that CR4 LED and the fan(s) are on. Set S2 to
OPR (CR3 off) and check that the fans stop
running after 2 minutes. (CR4 off).
7).Set TST/OPR switch to TST, check that when
2 1/2 minutes have elapsed (this includes the
delay) alarm device activates and fans continue to
run. If optional alarm is not installed, connect an
ohm meter across TB1-K1 and check that
contacts of relay K1 are closed (continuity).
8).Set S2 to OPR. Check that fans stop and K1
deenergizes (CR3 and CR4 are off).
9).Check that 1 hour after step (4) was performed,
fans start (CR4 lights) and run for 1 minute.
10).Set power switch S1 to off position, set alarm
and hour timers to desired settings.
11). To disable hour clock operation, move switch S3
to RST position.
12).Reconnect sensor alarm input wire removed in
step (2).
13).Set power switch S1 to PWR ON, Close and
lock enclosure cover. This completes checkout
and installation.
ORDERING INFORMATION
Options, such as additional relays, indicators, local or remote horns, etc. can be ordered along with control unit.)
GVU-1 Revised 5/05
CONTROLLERS-
GVU-1/CO Control unit for use with remote
carbon monoxide sensor (GVU-CO)
GVU-1/CO
2
Control unit for use with remote
carbon dioxide sensor (GVU-CO
2
)
REMOTE SENSORS (Order separately)-
GVU-CO Remote carbon monoxide sensor
GVU-CO
2
Remote carbon dioxide sensor
GVU-1A Control unit with integral CO sensor
GVU-1B Control unit with integral CO
2
sensor
GVU-1/NO
2
Control unit for use with remote
nitrogen dioxide sensor (GVU-NO
2
)
GVU-1/VOC Control unit for use with remote
smoke/air quality sensor (GVU-VOC)
GVU-VOC Remote smoke/air quality sensor
GVU-NO
2
Remote nitrogen dioxide sensor
GVU-1C Control unit with integral VOC sensor
GVU-1D Control unit with integral NO
2
sensor
TOXALERT INTERNATIONAL, INC., P.O. BOX 159, MOUND, MINNESOTA 55364 (952) 472-4541 FAX (952) 472-4960
Visit our website at www. toxalert. com