senva TG Series Installation Instructions Manual

senva TG Series Installation Instructions Manual

Toxic gas sensor
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INSTALLATION INSTRUCTIONS
TG SERIES
Toxic Gas Sensor
BACnet/Modbus/Analog
PRODUCT IDENTIFICATION
Pkg
Out
Gas1
TG
-
Package
R = Recessed Mount
Output Type
A = Analog
B = BACnet/Modbus
Gas Type 1*
C = Carbon Monoxide (CO)
N = Nitrogen Dioxide (NO2)
D = Carbon Dioxide (CO2)
E = Dual Channel CO2
M = Methane (CH4)
P = Propane (C3H8)
H = Hydrogen (H2)
O = Oxygen (O2)
S = Hydrogen Sulphide (H2S)
A = Ammonia (NH3)
2 = R22
3 = R134A (Multi-Refrigerant)
4 = R410A
5 = R404A
6 = R407C
Gas Type 2*
X = No second gas
N = Nitrogen Dioxide (NO2)
D = Carbon Dioxide (CO2)
E = Dual Channel CO2
M = Methane (CH4)
P = Propane (C3H8)
H = Hydrogen (H2)
O = Oxygen (O2)
S = Hydrogen Sulphide (H2S)
A = Ammonia (NH3)
2-6 = Refrigerants (see above)
*Refrigerant sensors may not be paired with CH4, C3H8, or H2
Gas2
senvainc.com 1-866-660-8864
DANGER
!
WARNING
Use installation wires rated for 75oC and above.
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.
Gas sensors should not be used as a substitute for proper
installation, use, or maintenance of gas emitting equipment.
This device is designed to detect conditions that could
result in acute effects of gas exposure. It will not fully safeguard
individuals with specific medical conditions. If in doubt,
consult a medical practitioner.
Conduit is prone to condensation if it passes from one
temperature zone to another, such as from indoors to outdoors
or from one part of a building to another. This condensation
may actually drip into the sensor if mounted below, causing
damage and/or poor readings.
In order to prevent condensation and water egress, seal
both the top and bottom of the conduit with a suitable
expanding foam product (such as Polywater
50KIT1) to prevent warm air from entering cold conduit.
Alternatively, fiberglass insulation may be inserted in the
conduit between the cold and warm sections using a rigid wire
or other method if both ends cannot be sealed. Sealing is the
preferred method.
• Conduit air flow entering sensor may prevent sensor from
reading ambient air properly, resulting in under measurement
of gases. Plug sensor conduit in all installations with a foam
plug or seal as noted above in order to prevent airflow from
the conduit.
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.
1825 NW 167th Place Beaverton Oregon 97006
Zipseal
ZIP-
TM
TM

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Summary of Contents for senva TG Series

  • Page 1 N = Nitrogen Dioxide (NO2) • The unit and associated systems require routine test and D = Carbon Dioxide (CO2) maintenance as prescribed in the TG Series User’s Manual E = Dual Channel CO2 section ‘Periodic Test and Maintenance’ M = Methane (CH4) •...
  • Page 2 MOUNTING FEATURES IF MOUNTING INTO A JUNCTION BOX: The Senva TG Series sensor is a dual-sensor toxic gas detector. There are two versions to select from; the Analog version and 1. Remove drywall clamps by turning screw counter clockwise. the Communications version(BACnet MS/TP and Modbus RTU).
  • Page 3 ANALOG SETUP WIRING CALL OUTS Analog DIP Settings 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Function Analog DIP Settings Current Voltage S1 Alarm HIGH 0-5V 0-10V S2 Alarm HIGH PWR - Power S2 - Sensor 2 analog PWR - Power output...
  • Page 4: Device Overview

    Though the frequency of inspection is typically affected by the operating conditions and environment (extreme temperatures, extreme humidity, exposure to contaminants, etc.), Senva recommends the following maintenance and intervals. More frequent maintenance may be required per local code by the Jurisdiction Having Authority (JHA).
  • Page 5: Wiring And Installation

    WIRING AND INSTALLATION 1. For proper detector operation, ensure that the Senva TG is connected to a continuous source of power (not controlled by a wall switch). The TG current draw figures represent worst-case conditions and will not vary as the applied DC voltage varies. To meet the requirements of ANSI/UL 2075, Second Edition, the TG...
  • Page 6: Wiring Examples

    WIRING EXAMPLES Power Supply 15-30VDC/24VAC 50/60Hz, 4w max, 160mA max. Gas Sensor 2 Gas Sensor 1 B(-) B(-) Building Automation Control Panel Agnd Agnd Comms (BACnet or Modbus) A(+) A(+) V- (Gnd) V- (Gnd) V- (Gnd) V- (Gnd) N.O. initiating circuit A(+) B(-)
  • Page 7: Specifications

    SPECIFICATIONS Power supply Power 15-30VDC/24VAC , 50/60Hz, 4w max, 160mA max. Conductor 14-24 AWG, Minimum 600V, 75°C Wiring Terminal Torque 0.5 N•m 2 Programmable Outputs 0-10V (default), 0-5V, 4-20mA (selectable) CO Output Scaling 0-200ppm (default), 0-500ppm (menu selectable) NO2 Output Scaling 0-10ppm (default), 0-10ppm (menu selectable) CO2 Output Scaling 0-10,000 ppm (default), 0-10,000 ppm (menu selectable) Propane/Methane/Hydrogen Output Scaling 0-50% LEL (default), 0-50% LEL (menu selectable) Outputs (Analog)
  • Page 8 SPECIFICATIONS (Continued) Type Catalytic Detection Range 0-50% LEL (Lower Explosive Limit) Accuracy ±5% of Range Methane/Propane/ Hydrogen Sensor Resolution 1% LEL Performance Life expectancy 5years Recommended Calibration 6 months Recommended Height (6) Hydrogen/Methane: 0.5 to 1 foot from ceiling; coverage 5000-7500 sq ft Type Electrochemical Detection Range 0-25% Volume Accuracy ±5% of Range...
  • Page 9: Troubleshooting

    TROUBLESHOOTING Symptom Solution Check wiring. Ensure power supply meets requirements. No output Sensor contaminated or at end of life. Replace sensor. Sensor reading error Relay Function Verify set-point. Verify test gas concentration. Cover sensor to prevent drafts and dilution during test. BACnet/Modbus Quick Reference DIMENSIONS The following section outlines some commonly utilized...

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