Galletti DST User manual

GB
Air destratifiers TECHNICAL and INSTALLATION MANUAL

2
AP66000443 - 02
DST
All copying, even partial, of this manual is strictly forbidden
INDEX
1 MAIN FEATURES ......................................................................................................................................................................................... 3
2 UNIT DESCRIPTION ..................................................................................................................................................................................... 3
3 CONSTRUCTIVE FEATURES ......................................................................................................................................................................... 3
4 RATED TECHNICAL DATA ............................................................................................................................................................................. 4
5 OVERALL DIMENSIONS ............................................................................................................................................................................... 4
6 HOW TO CHOOSE THE DESTRATIFIER ......................................................................................................................................................... 5
7 BEFORE STARTING INSTALLATION .............................................................................................................................................................. 5
8 INTENDED USE AND OPERATING LIMITS .................................................................................................................................................... 5
9 INSTALLATION ............................................................................................................................................................................................. 6
10 MAINTENANCE ............................................................................................................................................................................................ 7
11 TROUBLESHOOTING ................................................................................................................................................................................... 7
The technical and dimensional data reported in this manual may be modified in view of any product improvement.
DECLARATION OF CONFORMITY
Galletti S.p.A. whose main office is located at 12/a via Romagnoli,
40010 Bentivoglio (BO) - Italy, hereby declares, under its own
responsibility, that the destratifiers belonging to the DST series,
conform to the specifications of EEC Directives 73/23, 89/392, 91/
368, /93/44, 93/68, 89/336, 83/97 and subsequent modifications.
Bologna30/05/2003
Luigi Galletti
President

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1 MAIN FEATURES
In working environments heated with hot air systems the need to keep the
temperature at approximately 18°C, causes the air to stratify at the top of the
room, with much of the heat remaining unused, which is destined to flow
toward the atmosphere.
The DST destratifier eliminates this problem by generating a vertical flow of
air to reduce the difference between the temperature at the floor and the
temperature at the ceiling to about 3°C.
In the hot season the DST destratifier may be used to obtain a good
ventilation.
2 UNIT DESCRIPTION
(1) Cabinet: side panel
(2) Cabinet: upper/lower panel
(3) Rear panel/fan compartment
(4) Regulation thermostat
(5) Safety grille (fan) supporting motor
(6) Adjustable louvers
(7) electrical box
(8) Overload cut-out
(9) Plastic corner trim on cabinet (left and right)
(10) Conveyor duct
(11) Wall/ceiling mounting brackets
3 CONSTRUCTIVE FEATURES
- Cabinet: made of prepainted sheet metal complete with ABS corner trim,
is complete with adjustable aluminium louvers (spring operated) placed
on the air outlet which allow an optimal distribution of the air.
- Axial fan with statically balanced sickle blades housed in a specially
designed compartment that enhances ventilation and reduces noise
emission.
- Safety grille made of electrogalvanised steel wire: it supports the motor
and is fixed to the cabinet by means of vibration damping supports.
- Motor: standard equipped with:
- two speeds
- power supply 400V - 3 - 50Hz
- delta-star type
- 4 poles operation for model DST 16
- 6 poles operation for all the models from 26 to 66
- tropicalized
- internal thermal protection (klixon)
- IP 55 grade of protection
- Class F windings
- Overload cut-out with manual reset for motor protection
- Thermostat: connected to the overload cut-out to start and stop the DST
destratifier at the set temperature
- Suspending brackets: made of stainless steel metal, for the suspending
the unit from the ceiling.
1
7
9
5
2
6
3
10
4
8
11

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AP66000443 - 02
DST
All copying, even partial, of this manual is strictly forbidden
86 A
B
D80 80
E
300
C A
300
E> 500
4 RATED TECHNICAL DATA
DST A (mm) B (mm) C (mm) D (mm) E (mm)
14 460 300 350 300 500
26 560 400 450 400 500
36 660 500 550 500 525
46 760 600 650 600 515
56 860 700 750 700 535
66 960 800 850 800 535
Model DST 16 DST 26 DST 36 DST 46 DST 56 DST 66
Fan speed 1400 900 900 900 900 900
Air flow m3/h 1750 2750 3800 5000 6650 9500
Min. installation height m 3 3,5 4,5 5 7 6,5
Max installation height m 5 5,5 7 7,5 9 10
Power supply V - ph - Hz 400-3-50 400-3-50 400-3-50 400-3-50 400-3-50 400-3-50
Power input W 67 178 294 471 860 540
Current Absorbed A 0,21 0,4 0,58 0,85 1,37 1,18
Soundpower dBA666365697377
Soundpressure dBA444143475151
Weight kg 16 21 28 35 42 48
5 OVERALL DIMENSIONS
A-weighted sound pressure referred to a distance of 5 meters and a directional factor of 2.

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6 HOW TO CHOOSE THE DESTRATIFIER
1) Set the units installation height in the environment.
2) Calculate the volume above the units and consider 5 volumes/hour of air
recirculation.
3) Select the unit with air flow rate equal or higher than the overall volume
to recirculate and the proper installation height.
EXAMPLE
dimensions of the building :
- width 40 m
- length 100 m
- height 7.5 m
Destratifier installation height 6 m
The volume above the destratifier is of 3000 sqm; recirculated air flow should
be at least 3000 x 5 = 15000 sqm/h.
The best choice is no. 3 DST 46.
7 BEFORE STARTING INSTALLATION
Carefully read this manual.
Installationand maintenance may be carried outsolely by qualified technicians
specifically trained for this type of equipment, in conformity with current
regulations.
On receiving the equipment, check that it has not undergone any damage
during transport.
8 INTENDED USE AND OPERATING LIMITS
Galletti S.p.A. will not accept any liability for damage or injury caused as a
result of:
- installation by non-qualified personnel;
- improper use or use in conditions not allowed by the manufacturer;
- failure to perform the maintenance prescribed in this manual;
- use of spare parts other than original factory parts.
The operating limits are:
Air inlet temperature: from -10°C to +40°C
Supply voltage: +/- 10%
usage outside the stated limits is to be considered improper.
10
15 20
25
30
40
61,5

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AP66000443 - 02
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FL
2
4
6
1
3
5
M1
U1
V1
W1
M
3~
11
12
K1
135
642
13
14
T
ISM
3
24
5
6
1
K1
A1
A2
4
U V W
14
4
4
1
R
S
T
400/3/50
1
4
9 INSTALLATION
When choosing an installation site, you should observe the following rules:
- do not install the unit in places where inflammable gases are present;
- do not expose the unit directly to sprays of water;
- install the unit on walls or ceilings able to withstand its weight; use
accessories suited to the purpose and suitable screw anchors.
Store the unit in its packing container until you are ready to install it to prevent
dust from infiltrating inside it.
Installation, maintenance and cleaning jobs may be carried out only with
the power supply disconnected.
Do not modify the indoor electrical connections and the components of the
unit.
Set the working temperature on the thermostat before lifting the unit.
Using suitable lifting equipment (a forklift truck is recommended), convey the
unit to the installation site and rest it on the floor with the fins facing down.
Use the suspending brackets on the back of the cabinet to support the
destratifier; before securing the unit to the ceiling ensure that the supporting
chains, the studs and the surface used are able to support it.
Maintain adequate space around the destratifier to allow it to operate
correctly and to allow routine and reactive maintenance to be performed.
When the installation has been finished, check the chains fastening to the
ceiling, check that the electrical wiring have been thightened, open the
deflecting baffles and connect the unit to power supply in order to check its
operation.
Make the electrical connections with the power supply disconnected, in
accordance with current safety regulations. All the wiring must be done by
qualified personnel.
Scrupulously follow the wiring diagram provided.
Check that the mains electricity supply is compatible with the voltage shown
on the unit rating plate.
Each unit requires a switch (IL) on the feeder line with a distance of at
least 3 mm between the opening contacts, and a suitable safety fuse
(FL).
IL Line circuit-breaker (NOT SUPPLIED)
FL Protection fuse (NOT SUPPLIED)
ISM Overload cut-out
K1 remote control switch
TThermostat
MMotor
WIRING DIAGRAM

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10 MAINTENANCE
Special care should be taken when carrying out maintenance work.
Some metal parts may cause injuries; wear protective gloves.
For safety reasons, before carrying out any maintenance or cleaning jobs, put
the main switch of the unit off to disconnect the power supply.
type with self-lubricating bearings.
The final user can modify the direction of the adjustable aluminium louvers
manually and the regulation temperature set on the thermostat as well.
Maintenance may be performed exclusively by specialised personnel;
contact your dealer or installer.
The electric motor requires no maintenance as it is of the closed Stop the fan
and disconnect the unit from the power supply before working on it.
11 TROUBLESHOOTING
If the unit is not working properly, before calling a service engineer carry out
the checks indicated in the table below.
If the problem cannot be solved, contact the dealer or service centre.
Problem
The destratifier does not
work
Cause
1 No power supply
2The motor overload
cutout has tripped
3The thermostat has
stopped the fan
4 The main switch is on
off
Solution
1 Restore the power
supply
2Contact a service
engineer
3 Wait for the thermostat
operation
4 Switch on the power
supply

40010 Bentivoglio (BO)
Via Romagnoli, 12/a
Tel. [phone]
Fax [phone]
www.galletti.it