senva TG Series Installation Instructions

INSTALLATION INSTRUCTIONS
TG SERIES
Analog CO/NO2 Sensor
PRODUCT IDENTIFICATION
TGH-
Output Type
A = Analog
Gas Type
C = Carbon Monoxide (CO)
DANGER
N = Nitrogen Dioxide (NO2)
CN = CO/NO2 Combination
Enclosure Lid
Blank = Clear/Tinted
-S = Solid/Opaque
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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.
Installation Flexibility - Dual outputs available that can
be programmed for CO, NO2, and temperature signals.
Programmable fan and alarm relays for occupant warnings.
Daisy Chain Wiring - TG Series supports parallel connection of
multiple sensor voltage outputs.
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.
Stand Alone Controller - Wire one or more devices for direct
control of an exhaust fan or VFD without costly controller.
senvainc.com 1-866-660-8864 (F)1-503-296-2529 9290 SW Nimbus Ave. Beaverton Oregon 97008
Output Gas Lid
INSTALLATION
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Mount sensor on or near duct and secure using holes on
enclosure.
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Install and plumb pickup tubes as shown:
Recommended pickup tube length from duct to TG enclosure
for a 90% change in 15 minutes is as follows:
Given Tube Length Recommended Minimum Flow Velocity for
inches m/s
6 1.3
12 1.4
18 1.4
24 1.6
30 1.7
36 1.7
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Wire the sensor as required for your application:

Recommended cable type is 14-24 AWG shielded twisted pair.
For runs over 200 feet use a minimum of 22 AWG.
DEFAULT SETTINGS
Analog Outputs
Output 1: 0-10V
Output 2: 0-10V
Output Channels
TGH-AC: CO = Output 1
TGH-AN: NO2 = Output 1
TGH-ACN: CO = Output 1
NO2 = Output 2
To change default settings, refer to the User's Guide available
online at www.senvainc.com/TGUG
SUPPORTING DOCUMENTS
TG Series User's Guide
www.senvainc.com/TGUG
• Periodic Test and Maintenance
• Device Configuration
• Diagnostic Codes
Connect tubes to
hose barb fittings
on sensor.
15 minute 90% change
ft/min mph
261 3.0
270 3.1
279 3.2
317 3.6
335 3.8
340 3.9
POWER
COMMON
FAN IN
SEL
FAN OUT
ALARM IN
INC
ALARM OUT
DEC
OUTPUT 1
O1
OUTPUT 2
O2
Output Scaling
CO: 0-200ppm
NO2: 0-10ppm
Fan Relay Setpoint
CO: 25ppm
NO2: 1ppm
Alarm Relay Setpoint
CO: 100ppm
NO2: 3ppm