Installation Instruction
Installation Instruction
Venturi-Air Duct Kit
(Part No. S4-34760)
S4-34760_Venturi-Air Duct Kit
Intended purpose
This product is designed for installation on a loop circuit of a Vigilon system.
Warning
In order to ensure correct and safe operation of the product, all guidelines must be observed.
Safety-relevant user information
This manual includes all information required for the proper use of the products described.
The term 'qualified personnel' in the context of the safety information included in this manual or on the
product itself designates:
• project engineers who are familiar with the safety guidelines concerning fire alarm and extinguishing
systems.
• trained service engineers who are familiar with the components of fire alarm and extinguishing systems
and the information on their operation as included in this manual.
• trained installation or service personnel with the necessary qualification for carrying out repairs on fire
alarm and extinguishing systems or who are authorised to operate, ground and label electrical circuits
and/or safety equipment/systems.
Safety warnings
The following information is given in the interest of your personal safety and to prevent damage to the
product described in this manual and all equipment connected to it.
Safety information and warnings for the prevention of dangers putting at risk the life and health of user and
maintenance personnel as well as causing damage to the equipment itself are marked by the following
pictograms. Within the context of this manual, these pictograms have the following meanings:
Warning sign
Designates risks for man and/or machine. Non-compliance will create risks to man and/or
machine. The level of risk is indicated by the word of warning:
Important information on a topic or a procedure and other important information!
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Table of contents
1
General ............................................................................................................................................................................4
2
Mounting ..........................................................................................................................................................................4
2.1
2.2
2.3
2.4
2.5
2.6
2.7
3
Mounting the air duct kit...........................................................................................................................................5
Calculation of upstream and downstream distances ...........................................................................................6
Mounting Î Venturi tubes up to 600 mm .............................................................................................................8
Mounting Î Venturi tubes between 600 mm and 2800 mm..............................................................................9
Adapt the Venturi tube length .............................................................................................................................. 10
Mounting the Venturi tube .................................................................................................................................... 10
Mounting kit for circular and insulated air ducts ................................................................................................. 11
Opening the enclosure ................................................................................................................................................ 12
3.1
3.2
Detector base wiring ............................................................................................................................................. 12
Install fire detector ................................................................................................................................................. 13
4
Final check.................................................................................................................................................................... 14
5
Maintenance................................................................................................................................................................. 15
6
Specifications ............................................................................................................................................................... 16
7
Accessories .................................................................................................................................................................. 16
8
Loop Wiring................................................................................................................................................................... 17
Additional and updated Information
The described features, specifications and product related information in this manual
correspond to the date of issue (refer to date on the back page.
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S4-34760_Venturi-Air Duct Kit
1
General
The air duct kit (Part No. S4-34760) is used in combination with different Venturi tubes and special S-Quad fire
detector for the surveillance of air ducts in buildings.
Suitable S-Quad fire detector:
Part No.
Description
S4-715
Optical Sensor
The kit is fastened to the outside of the air duct. The Venturi tube is lead into the duct through a hole drilled for
this purpose. The air streaming through the air duct is picked up by the Venturi tube and led via the deflecting
unit inside the housing directly to the detector for subsequent evaluation.
The inserted S-Quad fire detector is directly connected to the analog loop of the Fire Alarm System. The
operation and indication of alarm and fault messages is given at the connected fire alarm panel.
Subpackage
1x
Short screw – to fix the Venturi tube in the enclosure
3x
Long screws – to fix the air duct kits enclosure on the air duct
1x
Rubber gasket (opening of enclosure ⇔ Venturi tube)
1x
End cap for venturi tube (inside the air duct)
2
Mounting
The required mounting position is indicated by the arrow  on the top of the enclosure. The alignment of the air
duct kit is correct if the arrow points into the same direction as the air flow inside the duct.
The arrow shaped bottom of the enclosure provides a quick info for the correct positional arrangement of the air
duct kit.
4
•
To avoid any damage to the devices, the supplied material in the subpackage must be used for
mounting the air duct kit.
•
If the minimum dimensions of the entry and exit paths can not be provided, care must be taken
to ensure a homogenous air stream at the Venturi tube when installing the air duct detector.
•
The direction of the air flow is not comparable with the upstream/downstream distances. This
way denotes the close area of the Venturi pipe. Observe the appropriate rated pipe diameter!
•
It may be necessary to have the air duct cross-section adapted by the company - installing the
air duct - to the local dimensions in order to ensure correct operation of the air duct detector.
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Dimensions
183
180
70
146
235
27
35
Fig. 1: Dimensions
2.1
Mounting the air duct kit
The required mounting position is indicated by the arrow  on the top of the enclosure. The arrow shaped
bottom of the enclosure provides a quick info for the correct positional arrangement of the air duct kit.
Mount the kit with the supplied three long screws
on the duct. Only the three marked holes may be
used to fasten the kit on the air duct.
The kit can be mounted in different positions (top,
side, bottom) on the air duct without affecting the
proper operation.
The arrow  on the housing of the air duct kit
must point into the direction of the air flow.
The Venturi tube must be aligned in the middle of
the ducts diameter and lead into the duct.
Fig. 2: Mounting and orientation of the air duct detector
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S4-34760_Venturi-Air Duct Kit
2.2
Calculation of upstream and downstream distances
Air duct with circular cross-section
dh =
Air duct with rectangular cross-section
dh = D
2xHxB
H+B
H
B
D
In order to prevent incorrect measurements the air through the duct detector should be in the same direction as
the air flow through the duct. For applications with a detector mounting close to reducing dampers and
regulating flaps, filter units or bends, the following minimum distances must be observed:
upstream
Î
at least 3 x the nominal diameter of the air duct
downstream
Î
at least 5 x the nominal diameter of the air duct
Fig. 3: Air duct detector after a bend in the duct system and downstream from an air intake (Example)
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Different application samples for the air duct mounting are shown in following diagrams to calculate the required
air inlet/exhaust sections.
MIN 3xd h
MIN 5xdh
ADD
MIN 3xd h
MIN 5xdh
Direction
of air flow
Fig. 6: Silencer
ADD
Direction
of air flow
Direction
of air flow
Fig. 7: Air reservoir
ADD
Direction
of air flow
ADD
MIN 3xdh
MIN 5xd h
ADD
MIN 5xd h
ADD
ADD
Direction
of air flow
MIN 3xdh
Direction
of air flow
Fig. 5: Reducing damper or regulating flap
ADD
Direction
of air flow
ADD
Direction
of air flow
Direction
of air flow
Fig. 4: Exhauster
MIN 3xd h
ADD
ADD
Direction
of air flow
MIN 5xd h
MIN 5xd h
MIN 3xd h
ADD
Direction
of air flow
Direction
of air flow
Direction
of air flow
ADD
MIN 3xdh
Fig. 8: Bend in the air duct system
Fig. 9: Branch in the air duct system
MIN 5xd h
MIN 3xd h
MIN 5xdh
ADD
ADD
Direction
of air flow
ADD
Direction
of air flow
Direction
of air flow
ADD
MIN 3xdh
Return air
Inlet air
Fig. 10: Diameter decrease or increase in the
air duct system
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Fig. 11: Air control unit
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S4-34760_Venturi-Air Duct Kit
2.3
Mounting Î Venturi tubes up to 600 mm
To mount the air duct (with or without the optional mounting kit Part No. S4-34760-99) with a pipe length of max.
600 mm the air duct must be drilled as shown in the figure.
Mounting information!
Drill a hole (∅ 38 mm) in the air duct and deburr the
borehole.
Cut the Venturi tube to the required length
(refer Section 2.5 “Adapt the Venturi tube length“).
Direction of
air flow
Air duct diameter
up to 600 mm
Hole ∅ 38 mm
Close the end of the Venturi tube by means of the
supplied sealing cap.
Fig. 12: Venturi tubes up to 600 mm
The immersion depth of the Venturi tube in the air duct should be 90% of the ducts diameter.
Observe distance caused by the optional mounting kit if required!
Refer to section 2.6 “Mounting the Venturi tube”!
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2.4
Mounting Î Venturi tubes between 600 mm and 2800 mm
To mount the air duct (with or without the optional mounting kit Part No. S4-34760-99) with a pipe length of
more than 600 mm the air duct must be drilled at two points as shown in the figure.
Mounting information!
Drill a hole (∅ 38mm) in the air duct and deburr the
borehole.
upper hole
bottom hole
Î ∅ 38 mm
Î ∅ 50 mm
Cut the Venturi tube to the required length
(refer Section 2.5 „Adapt the Venturi tube length“).
air duct diameters between 600 mm and 2700 mm
Because ot its lenght, the Venturi tube has to be
supported in the opposite side of the air duct.
Hole ∅ 38 mm
Direction of
air flow
Hole ∅ 50 mm
Seal the borehole of the air duct on the lower end of
the Venturi tube with the supplied plastic gasket
(use only Part No. S4-34760-15 / S4-760-28).
Insert rubber gasket in the lower borehole of the air
duct (∅ 50 mm).
Close the end of the Venturi tube by means of
the supplied sealing cap.
30
The Venturi tube should not protrude by more than
30 mm above the air duct.
Fig. 13: Venturi tubes between 600 mm and 2800 mm
The Venturi tube must be about 30 mm longer as the diameter of the air duct.
Observe distance caused by the optional mounting kit if required!
Refer to section 2.6 “Mounting the Venturi tube”!
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S4-34760_Venturi-Air Duct Kit
2.5
Adapt the Venturi tube length
The Venturi tube of the air duct kit has to be adapted to the diameter of the air duct system. Venturi tubes are
available in three different lengths which can then be cut - if needed - to the required length.
1)
Diameter of the air duct
Length of the Venturi tube
Part No.
140 mm to 600 mm
600 mm
S4-34760-06
600 mm to 1400 mm
1500 mm
S4-34760-15
1400 mm to 2700 mm
2800 mm
S4-34760-28
For systems with a tube length of more than 600 mm the Venturi tube must be about 30 mm longer as the diameter of the air duct.
Fig. 14: Cutting the Venturi tube to the required length.
2.6
Mounting the Venturi tube
•
Fit the supplied rubber gasket  on the upper side of the Venturi
tube (enclosure ⇔ Venturi tube).
•
Insert Venturi tube in the correct positional-Rohr arrangement 
into the oval opening of the air duct kit.
•
Fasten Venturi tube in the bottom of the enclosure with the
supplied short screw ‘ (subpackage).
•
The end of the Venturi tube must be terminated with the supplied
end cap ’.
Fig. 15: Mounting the Venturi tube
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2.7
Mounting kit for circular and insulated air ducts
The mounting kit (Part No. S4-34760-99) has to be used for mounting on insulated or circular air duct systems.
The mounting kit can simply be bend to fit to the shape of the duct. Pre-punched mounting holes are provided
for easy installation. Close the openings of the air duct with the supplied rubber grommets
(refer to Fig.).
Ventur tube
hole
Forming edge
Mounting holes
Fig. 16: Mounting kit for insulated and circular air ducts
Mounting example
Fig. 17: Circular air ducts
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Fig. 18: Insulated rectangular air duct
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S4-34760_Venturi-Air Duct Kit
3
Opening the enclosure
Open enclosure on the detectors side:
1. Lift plastic tab  at the top carefully upwards with
a small bladed srewdriver.
2. Unfix transparent cover  by turning it anti
clockwise and remove it.
Open enclosure on the terminals side:
1. Lift plastic tab ‘ at the top carefully upwards with
a small bladed srewdriver.
2. Unfix transparent cover ’ and remove it .
Fig. 19: Open enclosure (Detector side)
Fig. 20: Open enclosure (terminal side )
3.1
Detector base wiring
Vigilon loop
Fig. 21: Cable for loop wiring
The terminal assignment as well as the connection to the Fire alarm panel is detailed in the section 8
“Wiring”.
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3.2
Install fire detector
The S-Quad (Part No. S4-715) must be aligned to the detector base and mounted by turning the detector
clockwise into the base until it engages.
The S-Quad is connected and powered via the loop of the Fire alarm control panel.
Alarm and fault messages are transmitted via the loop to the connected Fire alarm control panel and indicated
on the panel display.
An activated alarm is also local indicated with the flashing red detector LED . The LED is visible for the
mounted detectors in the air duct kit through the transparent cover.
Fig. 22: Insert S-Quad sensor
•
An external remote indicator may be connected if required.
•
It is recommended to use the removal tool to insert/remove the detector from the base.
•
Fix flow indicator (supplied Film strip) inside the cover (refer to Fig. 25).
•
Replace cover in correct positional arrangement.
Fig. 23: Flow indicator (Film strip)
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S4-34760_Venturi-Air Duct Kit
4
Final check
•
The air duct kit must be fastened correctly on the air duct by using the supplied three screws (or optional
mounting kit).
•
The ambient conditions must match the specifications of the components.
•
The arrow head on the air duct kit must point into the direction of the air flow inside the air duct.
•
The rubber gasket between the Venturi tube and kit is fitted as required and the tube is fastened with the
appropriate screw in the air duct kit.
•
The lower end of the Venturi tube is terminated with the supplied end cap.
•
The cabinet must not show any signs of damage. Additional vents into the cabinet are not permitted.
•
If the air flow against the Venturi tube is present the flow indicator oscillates. The oscillating speed depends
on the air flow speed inside the air duct.
•
The detector base is correctly wired and all terminal screws are tighten.
•
The cover is properly engaged at the fixing points to ensure the IP protection rating.
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5
Maintenance
If the air duct kit or the Vigilon panel is undergoing service and maintenance work observe ensure appropriate
action is taken to prevent unwanted alarms.
To test the air duct detector enabled the test operation mode for this detector zone at the panel.
1. Pull the seal of the service opening carefully outwards
and turn it aside.
2. Remove spraying nozzle from test gas can.
3. Press the valve of the test gas can towards the
inspection hole.
4. Apply test gas in the inside of the chamber by briefly
pressing the test gas can
5. Wait for alarm activation of the detector (red LED flashes,
as the case indication at the panel).
6. If the detector is not activated apply again some test gas
in frequent intervals.
7. Close opening with the seal after testing.
Fig. 24: Test alarm activation of the detector
Detector zones which are in test mode will not cause a test fire condition!
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S4-34760_Venturi-Air Duct Kit
6
Specifications
Air duct detector housing (Part No. S4-34760)
Terminals
: 1.5 mm² max.
Air velocity
: 1 m/s to 20 m/s
Ambient temperature
: -10 °C to +60 °C
Storage temperature
: -15 °C to +65 °C
Protection class
: IP 54
Housing
: ABS plastic
Colour
: grey (with transparent cover)
Weight
: approx. 800g (without detector / detector base)
Dimensions (W x H x D)
: 180 x 235 x 183 (mm)
S-Quad (Part No. S4-715)
Operating voltage
Alarm indicator
Air velocity range
Ambient temperature
Temperature, storage
Ambient humidity
:
:
:
:
:
:
IP rating
Housing
Colour
Weight
Dimensions (with base)
Detector specification
EN 54-17 (section 4.8) data
:
:
:
:
:
:
:
35 V to 41 V
red LED, flashing
0 to 5.000 ft/min. ft/min.
-20 °C to +50 °C
-25 °C to +70 °C
95% relative humidity
(non-condensing)
IP 43 (with base + option)
ABS plastic
white (similar to RAL 9010)
approx. 110 g
Ø 117 mm, H = 62 mm
EN 54-7, CEA 4021
Vmax 42V
Vnom 40V Vmin 24V
VSO max 16V VSO min 8V
IC max 0.4A
IS max 1A IL max 20uA ZC max 0.1ohms
Venturi tube
Part No.
S4-34760-06
S4-34760-15
S4-34760-28
Length (mm)
600
1500
2800
Weight (Kg)
0,2
0,6
1,2
Material
7
aluminium
Accessories
Description
Part No.
Air duct kit
S4-34760
Venturi tube 600 mm
S4-34760-06
Venturi tube 1500 mm
S4-34760-15
Venturi tube 2800 mm
S4-34760-28
Mounting kit for circular and insulated air ducts
S4-34760-99
S-Quad Optical Sensor
16
S4-715
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8
Loop Wiring
Duct Sensor
100m max.
-
- L1
- 0V
- L2
- 0V
- EM
-C
- Earth
- Earth
Unmonitored LED output
12 34 56 78
+
1
2
3
4
5
6
7
8
10
1L
20
2L
L2
0V
L1
0V
Earth to
metal box
Note: The 0V terminals
in the terminal plate
are electrically
connected together.
C3
IN4
OUT5
Manual call point
S-Quad
L2
02
L1
01
C3
LOOP CIRCUIT 1
IN4
OUT5
3
S device
(2-way)
S-Quad
L1 0V L2 0V
LOOP n
Term inal Card
PANEL
Fig. 25: Loop Wiring
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S4-34760_Venturi-Air Duct Kit
Fig. 26: Vigilon loop wiring
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S4-34760_Venturi-Air Duct Kit
At the end of their useful life, the packaging,
product and batteries should be disposed of
via a suitable recycling centre and in
accordance with national or local legislation.
WEEE Directive:
At the end of their useful life, the packaging,
product and batteries should be
disposed of via a suitable recycling centre.
Do not dispose of with your normal household waste.
Do not burn.
Gent by Honeywell reserves the right to revise this publication from time to time and make changes to the
content hereof without obligation to notify any person of such revisions of changes.
Gent by Honeywell
140 Waterside Road, Hamilton Industrial Park, Leicester LE5 1TN
Tel : 0116 2462 000
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