DAISY CHAIN OF FAN RELAYS
Diagram shows connection between one or more devices
wired to an exhaust fan using the fan setpoint relay(s). This
function can be performed by a single TG sensor or a sequence
of multiple TG sensors wired in parallel.
If wiring multiple sensors, ensure that the fan relay setpoints
are uniformly set. The fan relay will activate if any sensor
reaches the warning setpoint.
Device also features a maximum o timer for the fan relay,
to ensure a minimum number of air changes within the
monitored space. See TG Series User’s Guide to enable this
feature.
SENVA TG SENSOR
POWER
COMMON
FAN RELAY
ALARM RELAY
OUTPUT 1
OUTPUT 2
SENVA TG SENSOR
POWER
COMMON
FAN RELAY
ALARM RELAY
OUTPUT 1
OUTPUT 2
Coil
Coil
Main Fan Power
Starter
Relays
Exhaust Fans
Additional
TG Sensors
DAISY CHAIN OF ALARM RELAYS
Diagram shows connection between one or more devices
wired to an alarm using the alarm relay(s) in parallel.
If wiring in a daisy chain, ensure alarm relay setpoints are
uniformly set. The alarm will activate if any sensor reaches the
alarm setpoint.
ALARM
SENVA TG SENSOR
POWER
COMMON
FAN RELAY
ALARM RELAY
OUTPUT 1
OUTPUT 2
SENVA TG SENSOR
POWER
COMMON
FAN RELAY
ALARM RELAY
OUTPUT 1
OUTPUT 2
Additional
TG Sensors
This section will focus only on the following items:
• ‘Quick Start’ options for changing fan/alarm settings
• Altering output type for Outputs 1 and 2.
Setup will timeout and return to normal operation after 60
seconds of no activity, so it is recommended to fully read
through this section before proceeding. (This is an abbreviated
section of the TG Series User’s Guide. Do not attempt to change
any other parameters without utilizing the full TG Series User’s
Guide found online at www.senvainc.com/TGUG)
SEL
INC
DEC
POWER
COMMON
FAN IN
FAN OUT
ALARM IN
ALARM OUT
OUTPUT 1
OUTPUT 2
F A
O1
O2
Quick Start
Quick Start allows the user to quickly select from three
precongured parameters for the fan and alarm settings for CO
and NO2. There is also a‘test mode’ for commissioning.
Press the select button uuntil QStARt, scrolls across the LCD.
Press the select button uagain and LCD will read A. This
corresponds to the default fan/alarm settings. From the
table below, choose which quick start parameter best ts
your application using pand q. Press the select button u
to activate the Quick Start conguration and proceed to the
‘Output Type’ section below.
LCD CO Fan CO Alarm NO2 Fan NO2 Alarm Buzzer Delay
A25ppm 100ppm 1ppm 3ppm 30 minutes
815ppm 50ppm 0.7ppm 2ppm 30 minutes
C35ppm 100ppm 1ppm 5ppm 30 minutes
tSt 5ppm 10ppm 0.5ppm 1ppm 2 minutes
ESC Exits back to main User Menu screen
Output Type
After activating Quick Start conguration, the LCD will display
10U (the default 0-10V output scale for Output 1 and Output
2). If required, choose an alternate output scale using pand
q. Press the select button uwith your desired output type
displayed.
LCD Output Type (Output 1 & Output 2)
10U 0-10V Output
1_5 1-5V Output
420 4-20mA Output
0_5 0-5V Output
After selecting the output type, the LCD will return back to the
Quick Start selection. Press qbutton to scroll to ESC and press
the select button u. Display will now show QStArt. Again,
press qbutton to scroll to ESC and press the select button u,
or allow the device to timeout (approximately 60 seconds) to
return to normal operation.
RELAY/OUTPUT SETUP
LCD Menu Buttons
u‘Select’ button
p'Increase/Up' button
q‘Decrease/Down’ button
