HSS Hire GIANT VOICE TWS-Siren Series Operating instructions

TWS-SIRENS MANUAL
Installation, operation
and troubleshooting manual
REV. F

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 2 of 49
Table of Contents:
1 General information ......................................................................................................... 3
2 Attentions and warnings .................................................................................................. 4
3 Installation ....................................................................................................................... 5
3.1 Site selection ........................................................................................................... 6
3.2 Utility mast selection ................................................................................................ 7
3.3 Erection of mast ....................................................................................................... 8
3.3.1 Mast / Siren speaker cluster.............................................................................. 8
3.3.2 Installation of cabinet ...................................................................................... 10
3.3.3 Installation of antenna (Optional) .................................................................... 14
3.3.4 Installation of solar panels (Optional) .............................................................. 16
3.3.5 Installation of Sun shield (Optional)................................................................. 19
4 Electrical connection ..................................................................................................... 21
4.1 Siren cabinet backplate .......................................................................................... 21
4.2 AC inlet board connections .................................................................................... 22
4.3 Batteries ................................................................................................................ 23
4.4 Speaker cable connection – Amplifiers .................................................................. 24
5 Service and troubleshooting .......................................................................................... 26
5.1 Siren speaker cluster ............................................................................................. 26
5.2 Station components defined................................................................................... 29
6 System operations ........................................................................................................ 31
6.1 Remote operations ................................................................................................ 31
6.2 Local operations .................................................................................................... 31
7 Understanding station addressing ................................................................................. 33
8 Maintenance ................................................................................................................. 40
8.1 Frequency of testing and activation ........................................................................ 40
8.2 Quarterly maintenance ........................................................................................... 41
8.3 Visual siren station physical inspection .................................................................. 41
8.3.1 Siren cabinet and components ........................................................................ 42
8.3.2 Speaker assembly and pole top equipment .................................................... 42
8.3.3 Station performance testing ............................................................................ 42
9 Troubleshooting ............................................................................................................ 46

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 3 of 49
1 General information
This TWS-Siren series are the market leading high power voice and siren system. Its construction
provides superior audio quality combined with the highest output to power consumption ratio.
The sirens are suitable for outdoor public warning and general alarm in any climatic conditions. As
such have our sirens been installed in various places ranging from the snow covered inlands of
Greenland to the hot and arid desert climate in the Kingdom of Saudi Arabia.
The sirens superior durability has proved itself over and over again with many installations more than
30 years old - and still running.
We hope that our siren will live up to your expectations and prove itself as the obvious choice for an
outdoor siren system.

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 4 of 49
2 Attentions and warnings
ATTENTION: Prior to installing the TWS-Siren unit these instructions must be rea carefully!
ATTENTION: Installation of the TWS-Siren unit may include heavy machinery and heavy
lifting. Installation is only to be carried out by qualified and experienced
personnel!
ATTENTION: The TWS-Siren can produce an audio output that may be harmful to your
hearing. Proper precautions should be taken and installation is only to be
carried out by qualified and experienced personnel!
WARNING: This system includes high voltage electrical wiring. To prevent electric shock
installation is only to be carried out by qualified and experienced personnel!

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 5 of 49
3 Installation
The installation manual for the TWS-Siren follows a logical progression. This progress is not
arbitrary! It was developed using information gathered from both manufacturer and field technicians.
Deviations from any of these procedures are not recommended unless they are in contradiction with
local codes.
IN ALL INSTANCES, LOCAL CODES TAKES PRECEDENT OVER PROCEDURES OUTLINED
HEREIN!
It is the responsibility of the installation supervisor / technicians to read this entire manual. The
installation procedure should not begin until all personnel are familiar with the entire process. The
overall installation procedure includes the following:
INSTALLATION PROCEDURE
1 Site selection
2 Utility mast selection
3
Erection of mast:
1. Mast / Siren speaker cluster
2. Installation of cabinet
3. Installation of antenna (Optional)
4. Installation of sun shield (Optional)
5. Installation of solar panels (Optional)
6. Grounding
7. Installation of AC
8. Installation of batteries
9. Work site clean up
4 Confirmation of proper system operation

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 6 of 49
3.1 Site selection
 The site selection for the TWS-Siren series requires careful consideration in order to achieve
the optimum coverage of the siren station. For a guideline to system planning, sound
propagation and site selection we direct the user to the Federal Emergency Management
Agency’s “Outdoor Warning Systems Guide, CPG 1-17” and EN 60849:1998 European
Norm: “Sound systems for emergency purposes”.
 The location of the siren site should be reviewed for its compatibility with its surroundings
such as private homes, schools and hospitals.
 The location of the siren site should be reviewed for blocking obstacles such as buildings,
high noise areas etc., that might reduce the expected coverage of the siren.
 The user is cautioned to consider the use of hearing protection devices for service personnel
working in close proximity to the speaker cluster.
 Access to the siren site is important from the standpoint of service, maintenance, inspection
and access to a utility service connect.
 Site locations for radio controlled units should be reviewed for radio reception.
 The location of the mast should be chosen with applicable requirements for the selected
foundation.

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 7 of 49
3.2 Utility mast selection
The following parameters are important when selecting a utility mast for the TWS-Siren:
1. Dimensioning weight of siren equipment (Please refer to TWS-Siren series datasheets)
2. Dimensioning wind load of siren equipment (Please refer to TWS-Siren series datasheets)
and other components such as solar panels and sunshield.
3. Audible siren sound output related to surrounding buildings etc. It is important to ensure that
siren sound output is not blocked by major obstacles such as buildings etc.
4. Audible siren sound output related to distance to the listener. Siren output should not surpass
120 dB at the location of the listener (Please refer to BS EN 60849:1998).
5. Accessibility during service. Should mast be equipped with service platform or other features
in order to facilitate service and maintenance of the siren
6. Braked for optional siren equipment should be manufactured with the same quality as the
mast. NOTE that siren equipment should be mounted without stress or tension load.

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 8 of 49
3.3 Erection of mast
ATTENTION: This installation manual address procedures applicable to HSS Engineering
standard 12 meter steel utility masts (TWS-FSM-12). Procedures for other
types of poles are not addressed in this document. The information
presented, however, provides the necessary data and guidelines for a
successful installation regardless of pole type / material. In all instances, local
codes take precedence over procedures outlined herein!
3.3.1 Mast / Siren speaker cluster
1. Sling or cradle the utility pole in a safe manner so that the pole top is 50 cm – 100 cm off the
ground. This will allow the speaker assembly to clear the ground when installed.
2. Locate the 4 mounting studs on the bottom of the speaker assembly (see Fig. 1). Please be
aware that studs are placed in an uneven pattern (see Fig. 2).
3. Thread a 3/4” hex nut onto each of the mounting studs until there is approx. 20 mm of space
between the top of the nuts and the bottom of the siren assembly. This space will allow the
speaker assembly to be leveled once the pole has been set.
4. Install a Ø22 mm flat washer onto each of the mounting studs.
5. Insert the four mounting studs through the mounting holes on the top of the pole top bracket.
The bottom of the siren assembly should lie flat against the pole top bracket.
6. Install a Ø22 mm flat washer onto each of the mounting studs.
7. Install a Ø22 mm split lock-washer onto each of the mounting studs.
8. Thread a 3/4” hex nut onto each of the mounting studs. Tighten this nut firmly to secure the
siren assembly to the pole top bracket.
9. At this point the pole should now be set. However, the installer may use their own discretion
as to whether to mount the electronic cabinet, solar panels (optional), sun shield (optional)
and antenna (optional) onto the utility pole before the pole is set.
10. When the pole has been set, use the adjustment nuts to adjust the mast until it is level.
11. When the pole has been leveled, use the adjustment nuts on speaker cluster to adjust this
into level.
12. Install grounding (for example grounding rod) as specified by local codes and connect both
copper wires (from mast and electronic cabinet) hereto.

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 9 of 49
PARTS INCLUDED WITH SIREN SPEAKER CLUSTER
Part Quantity
TWS-Siren speaker cluster 1
Washer Ø22 mm 8
Lock washer Ø22 mm 4
Hex nut 3/4” – 10 8
6 x 2 pair (Red / black) 2.5 mm2 speaker cable, 15 meters 1
Figure 1 - Mounting of siren speaker cluster
Figure 2 - Dimensions mounting bolts siren speaker cluster base plate

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 10 of 49
ATTENTION: Due to the total weight of the installation, do not lift in either the siren speaker
cluster or the siren cabinet. This can create cracks and damages on the siren
system.
3.3.2 Installation of cabinet
1. It is necessary for the installer to remember that two factors should determine the optimum
mounting location; the desired distance of the mounted cabinet to the ground (typically 100
cm to 200 cm as measured from the bottom of the cabinet) and available speaker wire length
(speaker assemblies are provided with a minimum of 15 meters of speaker cable as
measured from the bottom of the speaker assembly).
2. After the mounting location has been determined, install the mounting brackets supplied with
the mast with a c-c distance of 810 mm.
3. Mount cabinet sun shield (optional, see note 3.3.5) loosely on the M8 bolts supplied with the
cabinet mounting bracket.
4. Mount the cabinet onto the M8 bolts supplied with the mounting bracket using the threaded
M8 entries on the back of the cabinet. Tighten firmly.
5. Use the M8 threaded entry on the side of the cabinet to install grounding.
6. If local codes require so a rigid steel conduit can be installed and necessary couplings from
the speaker clusters 1” conduit adapter to the Ø25 mm speaker cable entry on the siren
cabinet. The first section of conduit may be installed onto the speaker’s base casting prior to
mounting the speaker to the pole top. At the option of the user, conduit unions may be used
between the first section of conduit and the speaker base casting and at the speaker cable
conduit entrance to the siren cabinet.
7. Batteries for the system should not be installed until the siren station is set in place!!!
8. Batteries should not be connected to the system until AC power (or solar power if equipped)
is available to the system to operate the system’s battery charger.
9. AC power should be connected direct to a main power supply to receive an optimal current
ATTENTION: Erect the siren cabinet away from the sun to avoid heat buildup inside the
cabinet. The heat from direct sun can damage the electronics.

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 11 of 49
PARTS INCLUDED WITH SIREN CABINET
Part Quantity
TWS-Siren cabinet 1
Cable gland Ø25 mm for speaker cable entry 1
Cable gland Ø20 mm for other cable entries (AC, communication cable, ETC.) 3
Battery jumper cable 1
Tube of NYOGEL® for corrosion protection of battery terminals 1

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 12 of 49
Item Description
1 Turn locks
2 Flange for pad locks
3 Mounting threads (M8)
4 Cable entries
5 Passive ventilation air intake / outlets
6 Mounting thread for ground (M8)
1
1
2
3
4
5
5
3
3
3
1
1
1
1
6

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 13 of 49
ATTENTION: To ensure proper airflow at battery compartment make sure that air intake
and outlet are not blocked.
ATTENTION: Due to the weight of the amplifier panel, the electronic cabinet must be
transported in an upright fashion to prevent distortion of the amplifier panel.
ATTENTION: Batteries for the system should not be installed until the siren station is set in
place, otherwise some leakage of the battery fluid may occur. Batteries
should not be connected to the system until AC power (or solar power is
equipped) is available to the system to operate the systems battery charger.
ATTENTION: Reliable AC installation should be selected to avoid damages on the
batteries.

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 14 of 49
3.3.3 Installation of antenna (Optional)
Figure 3 - Omnidirectional antenna
PARTS INCLUDED WITH SIREN CABINET
Item Part Quantity
1 Antenna
NOTE: Frequency to be specified at order 1
2 Antenna bracket 1
3 Steel tube clamp 40 – 60 mm 2
15 meter TWS-COAX400 with connectors 1
1
2
3

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 15 of 49
The proper antenna bracket mounting location is determined by several considerations.
1. The antenna bracket should be positioned as high on the utility pole as is possible.
However, under no circumstances should the top of the antenna be any closer than 1 meter
from the base of the siren speaker cluster (see Fig 4)
2. Ensure proper grounding of antenna
3. The antenna cable provided by the factory is a 15 meters TWS-COAX400 coax cable
4. The antenna MUST be mounted on the side of the utility pole that faces the transmitter (see
Figure 5)
5. Refer to the installation sheet included with your antenna kit for further information regarding
cable connections and antenna trimming
Figure 4 - Antenna mounting orientation
ATTENTION: Installation must be in compliance with all FCC regulations or local equivalent
authority.
ATTENTION: Frequency must be specified at order.
ATTENTION: Antenna cable should be fixed with stainless cable tie.

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 16 of 49
3.3.4 Installation of solar panels (Optional)
DETERMINING SOLAR PANEL MOUNTING ANGLE
1 Determine the latitude of your location
2 Find your latitude on the table below and not the corresponding tilt angle
3
Locate your tilt angle in the table on the next side. For every tilt angle, there is a
corresponding “Dimension A”. “Dimension A” represents the distance from the bottom of
the upper mounting bracket to the bottom of the lower mounting bracket.
EXAMPLE 1: EXAMPLE 2:
Location latitude is 30º Location latitude is 7º
80º - 30º = 50º tilt angle 7º = 75º tilt angle
50º tilt angle = 33.60” Dimension A 75º tilt angle = 15.54” Dimension A

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 17 of 49
LATITUDE TILT ANGLE
0º to 9º 75º = Tilt angle
10º to 20º 85º minus latitude = Tilt angle
21º to 45º 80º minus latitude = Tilt angle
46º to 65º 75º minus latitude = Tilt angle
66º to 75º 10º minus latitude = Tilt angle
TILT
ANGLE
DIMENSION A
(INCHES)
TILT
ANGLE
DIMENSION A
(INCHES)
TILT
ANGLE
DIMENSION A
(INCHES)
10 50.49 32 43.71 54 30.93
11 50.34 33 43.24 55 30.24
12 50.16 34 42.77 56 29.54
13 49.97 35 42.28 57 28.84
14 49.77 36 41.78 58 28.13
15 49.55 37 41.26 59 27.41
16 49.32 38 40.74 60 26.69
17 49.08 39 40.20 61 25.96
18 48.82 40 39.65 62 25.23
19 48.54 41 39.10 63 24.50
20 48.25 42 38.53 64 23.76
21 47.95 43 37.95 65 23.01
22 47.63 44 37.36 66 22.27
23 47.30 45 36.75 67 21.52
24 46.95 46 36.14 68 20.77
25 46.59 47 35.52 69 20.02
26 46.22 48 34.89 70 19.27
27 45.83 49 34.25 71 18.52
28 45.43 50 33.60 72 17.77
29 45.02 51 32.95 73 17.02
30 44.60 52 32.28 74 16.28
31 44.16 53 31.61 75 15.54

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 18 of 49

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 19 of 49
3.3.5 Installation of Sun shield (Optional)
PARTS INCLUDED WITH SUN SHIELD SET
Part Quantity
Backplate 1
Top plate 1
Right side plate 1
Left side plate 1
Mounting bolts SET
Spacer between siren cabinet and sun shield 4

Manufactures and customizes GIANT VOICE® and ® Warning Systems
HSS Engineering A/S • Laegaardsvej 12 • 8520 Lystrup • Denmark • Tel + 45 70 22 88 44
VAT no. 21 82 26 71 • www.hss.dk • e-mail: [e-mail]
INSTALLATION OPERATION AND TROUBLESHOOTING MANUAL TWS-SIREN SERIES_RF
Template Rev. 04-03-2022 Page 20 of 49
Item Description
1 Distance from C-C mounting braced to top of sun shield (301 mm)
2 Spacer between sun shield and siren cabinet
3 Direction away from direct sunlight
ATTENTION: Sun shield is mounted on the same bracket as the siren cabinet.
ATTENTION: Front of siren cabinet must be facing away from direct sunlight.
ATTENTION: Spacer must be placed between the siren cabinet and the sun shield.
1
2
3
3