senva TG SERIES Installation Instructions

INSTALLATION INSTRUCTIONS
TG SERIES
BACnet/Modbus CO/NO2 Sensor
PRODUCT IDENTIFICATION
TGM-
Output Type
B = BACnet/Modbus
Gas Type
C = Carbon Monoxide (CO)
N = Nitrogen Dioxide (NO2)
CN = CO/NO2 Combination
Enclosure Lid
DANGER
Blank = Clear/Tinted
-S = Solid/Opaque
!
WARNING
• Only qualified trade installers should install, program, maintain and test
system incorporated therein. Installer is responsible for compliance of all
applicable codes.
• Read, understand, and follow instructions thoroughly.
• The unit and associated systems require routine test and maintenance
as prescribed in the TG Series User's Manual section 'Periodic Test and
Maintenance'
• Do not install in hazardous or classified locations.
• De-energize power supply prior to installation.
• CO/NO2 sensors should not be used as a substitute for proper installation,
use, or maintenance of CO/NO2 emitting equipment.
• This CO/NO2 sensor is designed to detect conditions that could result in
acute effects of carbon monoxide or nitrogen dioxide exposure. It will not fully
safeguard individuals with specific medical conditions. If in doubt, consult a
medical practitioner.
LIMITATION OF LIABILITY
Senva's liability, whether in contract, in tort, under any warranty, in negligence
or otherwise shall not exceed the amount of the purchase price paid by the
purchaser for the product. Under no circumstances shall Senva be liable for
special or consequential damages.
FEATURES
Visual/Audible Indicators - Standard LCD, LED indicators
(green, yellow, red), audible alarm.
Supports BACnet and Modbus - Each TG unit supports BACnet
MS/TP, Modbus RTU and Modbus ASCII.
Auto-Configuring Devices - TG Series automatically detects
network baud rate, serial format, protocol and self-addresses!
Dual Gas Monitoring - Sensor can accomodate CO, NO2 or
both CO and NO2 in one enclosure. Sensor can be expanded in
field by adding additional CO or NO2 elements.
Easy Quick Start - TG Series has 4 Quick Start configurations
that modify fan and alarm relay settings to common ranges
utilized in the field.
Faster Commissioning - Test Mode in the Quick Start options
lowers relay and alarm thresholds for faster field commissioning.
senvainc.com 1-866-660-8864 (F)1-503-296-2529 9290 SW Nimbus Ave. Beaverton Oregon 97008
Output Gas Lid
INSTALLATION
1. Locate sensor near traffic areas, away from sources of
ventilation or drafts. One sensor per 5000-7500 square feet is
normally required.
2. Remove the lid and circuit board from the enclosure and set
them in a safe location away from dust, debris or moisture.
3. Mount the enclosure to a 2x4" electrical box with vents
oriented towards the floor, as shown:
Recommended mounting height is 5 feet. Check with local
and state building codes to ensure mounting height is in
compliance.
4. Remove the terminal block from the circuit board and wire
according to the application requirements:

SEL
INC
DEC
511Ω Pullup bias resistor
120Ω Bus termina�on resistor
511Ω Pulldown bias resistor
See Page 2 for wiring recommendations.
POWER
COMMON
FAN IN
FAN OUT
RS-485 +
ISOLATED GND
RS-485 -
Termination
on
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