Tyco TAV-D Operation Instructions

Model TAV-D
Air Vent, Dry
IMPORTANT
Refer to Technical Data Sheet
TFP2300 for warnings pertaining to
regulatory and health information.
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General
Description
The TYCO Model TAV-D Air Vent, Dry,
provides oxygen venting in dry pipe
fire sprinkler systems. As a fire sprin-
kler system is filled with a continuous
supply of nitrogen gas from the TYCO
Nitrogen Generator, the air vent allows
oxygen rich gas to be vented from
the fire sprinkler system. Over a short
period of time the air vent will almost
completely remove oxygen from the fire
sprinkler system (< 2% oxygen).
The air vent must be installed as shown
on the engineering design documents.
If a location is not specified, install the
air vent on the fire sprinkler system riser
on the system side of the main control
valve. The vent is also installed to
provide source gas when used in con-
junction with the TYCO TSGA SMART
Gas Analyzer.
The air vent is equipped with a levered
float valve that allows oxygen to dis-
charge but prevents water from
leaking through the restricted venting
orifice in the event that water enters
the fire sprinkler system, as shown
in Figure 1. A backpressure regula-
tor is also included to prevent total
system depressurization from the vent
assembly.
The restricted venting orifice allows
oxygen to be vented from the fire
sprinkler system at a controlled rate to
achieve a minimum nitrogen concentra-
tion of 98%. A special fitting is provided
to receive 5/32 in. tubing when the vent
is used in conjunction with the TYCO
Model TSGA SMART Gas Analyzer.
There are two models of the TYCO Air
Vent, the TAV-D and the TSV-D. Both
units operate as described above while
the TSV-D SMART model includes an
electronic solenoid valve wired to a
control panel that automatically closes
the vent once the desired nitrogen con-
centration is reached. The control panel
is also equipped with a reset switch to
allow the venting process to restart
should oxygen be reintroduced into the
fire sprinkler system. Refer to Technical
Data Sheet TFP1263 for complete infor-
mation on the TSV-D SMART Air Vent.
AUGUST 2022
Worldwide
www.tyco-fire.com
Contacts
NOTICE
The TYCO Model TAV-D Air Vent, Dry,
described herein must be installed and
maintained in compliance with this
document, in addition to the standards
of any other authorities having jurisdic-
tion. Failure to do so may impair the
performance of the related devices.
The owner is responsible for main-
taining their fire protection system
and devices in proper operating con-
dition. Contact the installing contrac-
tor or product manufacturer with any
questions.
Technical
Data
Service Pressure
Up to 175 psig (12 bar)
System Connection
1 in. NPT Male
Temperature Range
40°F to 120°F (4.5°C to 49°C)
Dimensions
12.0 in. (W) x 4.65 in. (D) x 9.1 in. (H)
(305 mm (W) x 118 mm (D) X 231 mm (H))
TFP1262