Johnson Controls tyco TAV-D User manual

Model TAV-D
Air Vent, Dry
Page 1 of 4 NOVEMBER 2019 TFP1262
Worldwide
Contacts
www.tyco-fire.com
IMPORTANT
Refer to Technical Data Sheet
TFP2300 for warnings pertaining to
regulatory and health information.
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 doc-
uments. 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 conjunction with the TYCO
TSGA SMART Gas Analyzer.
The Air Vent is equipped with a levered
Float Valve that allows oxygen to
discharge 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 concen-
tration of 98%. A special fitting is pro-
vided 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. The
units both operate as described above
but the TSV-D model includes an elec-
tronic solenoid valve wired to a control
panel that automatically closes the vent
once the desired nitrogen concentra-
tion 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.
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
13.5 in. (W) x 4.25 in. (D) x 7.5 in. (H)
(343 mm (W) x 108 mm (D) X 191 mm (H))

TFP1262
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FIGURE 1
MODEL TAV-D AIR VENT DRY
AS S EM BLY
Operation
Step 1. Verify the vent assembly is
equipped with a restricted venting
orifice downstream of the backpres-
sure regulator.
Note: If the vent assembly is not equipped
with a restricted venting orifice, one will be
provided by TYCO during system commis-
sioning. The restricted venting orifice must
be installed before proceeding with the
steps below.
Step 2. Determine the low air alarm
pressure and the turn-on pressure of
the nitrogen generator.
Step 3. Choose a pressure setting
for the backpressure regulator that
is 3 to 5 psig (0,2 to 0,3 bar) above
the low air alarm pressure but below
the turn-on pressure of the nitrogen
generator.
Step 4. Pull the knob out from the reg-
ulator to adjust the pressure setting.
Turn the knob clockwise to raise the
pressure, counter-clockwise to lower
the pressure.
Step 5. Close the ball valve and allow
the device to depressurize through
the restricted venting orifice to the
pressure setting. Adjust the pressure
setting using the knob, then open the
ball valve to pressurize the device and
close the ball valve again to check the
pressure setting. Repeat the process
until the desired pressure setting is
achieved.
Note: This process can only be performed
when the fire sprinkler system is at normal
operating pressure.
Step 6. Push the knob back into the
regulator until it clicks into place.
Step 7. Once the TYCO Nitrogen Gen-
erator is commissioned, open the iso-
lation ball valve on the vent assembly.
The Air Vent is now open and actively
venting oxygen from the fire sprin-
kler system. It should remain open
for approximately 14 days or until the
system nitrogen concentration reaches
98% or greater. Use a TYCO Model
THGA Handheld Gas Analyzer to verify
the gas concentration inside the fire
sprinkler system.
Step 8. Close the isolation ball valve.
Failure to close the manual ball valve
after 14 days or once the fire sprinkler
system nitrogen concentration reaches
98% will result in additional oxygen
corrosion damage to the system and
unnecessary run time of the air com-
pressor and nitrogen generator.
Step 9. If the sprinkler system actuates
or another event introduces oxygen
to the sprinkler system the manual
ball valve must be opened again for a
period of 14 days to vent oxygen from
the system.
Installation
The TYCO Model TAV-D Air Vent, Dry
must be installed in accordance with
this section.
Step 1. The Model TAV-D Air Vent is
equipped with a ball valve to be con-
nected to the fire sprinkler riser. The
contractor must install a 1 in. outlet
(welded or mechanical) to connect the
vent assembly to the sprinkler system
on the system side of the main control
valve as shown in Figure 2. The ball
valve must remain in the closed posi-
tion until the TYCO Nitrogen Generator
is commissioned.
Step 2. Install the vent assem-
bly in a level position. The recom-
mended mounting height is between
5 ft to 10 ft (2 m to 3 m) above the fin-
ished floor.
Note: Piping to the vent assembly cannot be
installed in a configuration that would trap
water and prevent drainage to the sprinkler
system; a water trap impedes the ability of
the vent assembly to vent oxygen from the
fire sprinkler system.
Step 3. Inspection of the vent assem-
bly should be performed after installa-
tion and hydrostatic testing of the fire
sprinkler system. Inspection should
be performed periodically thereaf-
ter in accordance with the applicable
NATIONAL FIRE PROTECTION ASSO-
CIATION (NFPA) codes and standards
and/or the authority having jurisdiction.
Note: Inspection must include the condition
of the in-line filter and checking for blockage
in the “Y” strainer and the restricted venting
orifice.
RESTRICTED VENTING ORIFICEIN-LINE FILTER
MUFFLER
GAS SAMPLE PORT
BACKPRESSURE REGULATOR
CONNECTION TO
SPRINKLER SYSTEM
ISOLATION
BALL VALVE
QUICK CONNECT
“Y” STRAINER
WITH BALL VALVE
FLOAT
VALVE

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FIGURE 3
MODEL TAV-D AIR VENT DRY
IN-LINE FILTER
FIGURE 2
MODEL TAV-D AIR VENT DRY
INSTALLATION SCHEMATIC
Care and
Maintenance
The TYCO Model TAV-D Air Vent, Dry
must be maintained and serviced in
accordance with this section.
Before closing a fire protection system
main control valve for maintenance
work on the fire protection system that
it controls, permission to shut down
the affected fire protection systems
must first be obtained from the proper
authorities. All personnel who may
be affected by this decision must be
notified.
Inspection, testing, and maintenance
must be performed in accordance
with the requirements of the NFPA, and
any impairment must be immediately
corrected.
The owner is responsible for the inspec-
tion, testing, and maintenance of their
fire protection system and devices in
compliance with this document, as well
as with the applicable standards of any
authorities having jurisdiction. Contact
the installing contractor or product
manufacturer with any questions.
Inspection Instructions
Step 1. The Model TAV-D Air Vent
must be inspected annually at mini-
mum. While the isolation ball valve
is in the open position check for air/
water leaks and ensure the pressure
gauge is displaying normal system
pressure.
Step 2. While the isolation ball valve
is in the closed position inspect the
condition of the inline filter and for
blockage in the “Y” strainer and
restricted venting orifice. Twist the
black Filter Housing clockwise until it
can be removed to expose the filter
element.
Step 3. Replace the In-Line Filter ele-
ment if a visual inspection reveals a
significant collection of debris.
1“ OUTLET REQUIRED
NITROGEN SUPPLY
DRY/PREACTION
SPRINKLER VALVE
MODEL TAV-D
MANUAL VENT
RISER
FILTER HOUSING
FILTER
SCHRADER VALVE

TFP1262
Page 4 of 4
NATIONAL FIRE PROTECTION ASSOCIATION and NFPA are registered trademarks of National Fire Protection Association;
SCHRADER is a trademark of Schrader-Bridgeport International, Inc.
1400 Pennbrook Parkway, Lansdale, PA 19446 | Telephone [phone]
© 2019 Johnson Controls. All rights reserved. All specifications and other information shown were current as of document revision date and are subject to change without notice.
In-Line Filter Replacement
Instructions
Step 1. Close the isolation ball valve.
Step 2. Depressurize the housing by
pressing the SCHRADER valve on
the bottom of the in-line filter housing
shown in Figure 3.
Step 3. Remove the lower section of
the In-Line Filter housing by turning
the filter housing counterclockwise.
Note: A rubber o-ring/seal is located
between the upper and lower sections of
the filter housing.
Step 4. Remove the old filter by turn-
ing the filter counterclockwise.
Step 5. Replace with a new filter,
TYCO Model TFLT Replacement Filter
Kit. The filter is secured to the hous-
ing by turning the filter clockwise.
Note: Ensure the filter housing is secured
only finger/hand tight.
Step 6. Install the rubber o-ring/seal
on the lower section of the filter hous-
ing.
Step 7. Re-install the filter housing by
turning the filter housing clockwise.
Note: Ensure the filter housing is secured
only finger/hand tight.
Step 8. Open the isolation ball valve.
Limited
Warranty
For warranty terms and conditions, visit
www.tyco-fire.com.
Ordering
Procedure
Contact your local distributor for avail-
ability. When placing an order, indicate
the full product name and Part Number
(P/N).
Air Vent, Dry
Specify: Model TAV-D Air Vent, Dry,
P/N TAVD01
Replacement Filter Kit
Specify: Model TFLT Replacement
Filter Kit, P/N TVDFLT