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Installation . . . . . . . . . . . . . . . . . .2
Installation alternatives . . . . . . . . . .2
Connection to the inlet/outlet duct . .3
Connection of duct to the fan outlet . .3
Electrical connections . . . . . . . . . . .3
Guards . . . . . . . . . . . . . . . . . . . . .4
To adjust the V-belt tension . . . . . . .4
To change the belts . . . . . . . . . . . .4
Installation of HABASIT flat-belt drive . . .5
Moveing the motor to adjust
the belt tension . . . . . . . . . . . . . . .6
Dismantling the EUL(B,F)-30-53
belt guard (principle) . . . . . . . . . . . .6
Belt pulleys . . . . . . . . . . . . . . . . . .7
Variable-pitch guide vanes . . . . . . . .7
Checks to be made prior
to starting the fan . . . . . . . . . . . . .8
Starting the fan . . . . . . . . . . . . . . .8
Storage before installation . . . . . . . .8
Installation . . . . . . . . . . . . . . . . . .9
Filling with manometer liquid . . . . . . .9
Hose connections . . . . . . . . . . . . . .9
Checks . . . . . . . . . . . . . . . . . . . . .9
Temperature correction . . . . . . . . . .9
Air flow measurement with q-DYSA®
and analogue flow indicating instrument .10
Installation of the frequency converter .11
EUL(B,F) Fan
Fläkt Woods 4074 GB 05.05 1 Specifications are subject to alteration without notice
EU Air Handling Unit INSTALLATION
Fläkt Woods 4074 GB 05.05 2 Specifications are subject to alteration without notice
EU Air Handling Unit INSTALLATION
EUL(B,F) Fan
Fig. 1
Horizontal installation
Installation alternatives
The fan can be installed to discharge into a duct or into
some other unit section. Alternative directions of dis-
charge and locations of discharge opening are shown in
Fig. 2 and 3.
1) Upward outlet not possible
2) Downward outlet not possible
Fig. 2
Vertical installation (sizes 11–32)
Installation
Fig. 3
Outlet
upwards
Top 1)
inlet
Outlet
forward
Outlet
downwards
Bottom
inlet 2)
Normal
inlet (end
wall
Rear
inlet
Outlet
forward
Outlet
downwards
Normal inlet
(end wall)
Top 1)
inlet
Outlet
upwards
Left
side
inlet
EULZ-04 Protective screen
EULZ-03 counterflange
EULZ-01 flexible connection
EULZ-02 connection piece
EULZ-09 damper
EULZ-06 connection piece
EULZ-05 flexible connection
EULZ-07 counterflange
EULZ-08 protective screen
Outlet:
Inlet:
Fläkt Woods 4074 GB 05.05 3 Specifications are subject to alteration without notice
EU Air Handling Unit INSTALLATION
EUL(B,F) Fan
Connection to the inlet/outlet duct
Ducts can be connected to the connection parts of the
unit in accordance with one of the examples shown in
Fig. 4.
Important!
For all alternatives, make sure that the deadweight of
the duct system is not applied to the unit casing.
Fig. 5
Electrical connections
Electrical connections are to be carried out by an
authorized electrician.
Use a rubber insulated cable but do not run the cable
through the inspectiondoor.
Allow about 1.2 m of extra cable on the inside of the
casing of the EUL(B, F)-11 through -32, to enable the
fan to be withdrawn for service. See Fig. 9.
Use a trepanning drill, for instance, for drilling a hole
for the cable gland at a suitable point on the casing. The
cable gland can be arranged as shown in Fig. 8.
Safety isolating switch
The fan should be equipped with a safety isolating swit-
ch such as the EULZ-17. Always open the safety isola-
ting switch before doing any work on the fan.
The safety isolating switch should be located at a
point that enables the fan to be withdrawn without
having to disconnect the electrical connections. Do not
use the safety isolation switch as an operating switch.
Fig. 7 Fig. 8
Fig. 9
Fig. 4a Fig. 4b Fig. 4c
The duct can be connected to the casing in accordance
with one of the following alternatives:
A. By means of a connection piece secured to the unit
casing with self-tapping screws. The duct can then be
connected by means of a PG-joint or a flanged joint
as shown in Fig. 4a.
B. By means of a flexible connection secured to the unit
casing with self-tapping screws. The duct can then be
connected by means of a PG-joint or a flanged joint
as shown in Fig. 4b.
C. By means of a collared duct with sheet steel angles at
the corners.
Connection of duct to the fan outlet
Installation principle:
All connections should be fitted edge-to-edge with the
back plate of the fan. N.B. Not all connection facilities
are shown, see Fig. 5 and 6.
()
Connection piece Flexible connection Counterflange Duct
EULZ-03 EULZ-02 EULZ-04
Fig. 6
Connection pece Flexible connection Counterflange Duct
EULZ-03 EULZ-02 EULZ-04
Fläkt Woods 4074 GB 05.05 4 Specifications are subject to alteration without notice
EU Air Handling Unit INSTALLATION
EUL(B,F) Fan
Guards
The provisions of the EEC Machinery Directive concer-
ning guards must be met. This means that the fan must
be equipped with screen protection for belt drive and
inlet or screen protection (requiring tools to dismantle it)
behind the inspection cover or a door lock.
To adjust the V-belt tension
The belts must be correctly tensioned to ensure good
contact with the pulleys. If insufficiently tensioned, the
belts may slip, and if excessively tensioned, the motor
and fan bearings may be overloaded. When correctly ten-
sioned, the belt deflection L will be 15 mm per metre of
distance between centres (c/c) when a force P (N) is
applied.
The deflection and force should preferably be measu-
red by means of a tensiometer (see Fig. 10 and 11). The
force P is dependent on the belt type as shown in the
table below.
Fig. 10
Fig. 11
L
c/c
P
012 3456 cm N 120 100 80 60 20
Belt
section
SPZ
SPZ
SPA
SPA
SPB
SPB
SPC
SPC
67–95
100 ≤
90-132
140 ≤
160-224
236 ≤
224-355
375 ≤
10
15
20
28
35
50
60
90
15
20
27
35
50
65
90
120
Effective diameter of smaller pulley,
mm
P in N / belt
Normal Max. 1)
1) New belts.
To change the belts
To change the belts, first move the motor towards the fan
by a sufficient amount to enable the old belts to be easily
prised off the pulleys and the new belts to be prised on.
Change all the belts at the same time. Use matched belts
(with the same production number), i.e. belts of exactly
the same length.
Tension the belts according to the instructions on this
page and align them as shown in Fig. 12. Retension the
belts after 30 minutes of operation.
Fig. 12
Fläkt Woods 4074 GB 05.05 5 Specifications are subject to alteration without notice
EU Air Handling Unit INSTALLATION
EUL(B,F) Fan
Installation of HABASIT flat-belt drive
Caution!
Never fit an ice cold and stiff belt; allow the belt to thaw
out, become flexible and pliable before fitting it.
Exposure to cold impairs the elasticity of the belt materi-
al. This will make the belt difficult to fit and, in the
future, may cause it to break apart at the weld.
1. Fit the motor and fan pulleys to their corresponding
shafts but do not tighten the bushes.
2. Fit the belt around the pulleys and push the motor
by hand to stretch the belt.
3. Align the pulleys by means of a straight edge and
tighten the pulley bushes.
4. Tighten the motor mounting bolts only so hard that
the motor will still be able to slide on the guide rails.
5. Measure the longest free measurement distance on
the belt to the nearest 100 mm. The belt must not be
in contact with the pulleys along the measurement
distance.
6. Remove the belt, place it on a flat surface and mark
off the above measurement distance to the nearest
100 mm.
7. Refit the belt to the pulleys and tension it by means
of the tensioning screws of the motor guide rails.
Keep the shafts of the motor and fan as parallel as
possible.
8. Conclude the tensioning when the belt has achieved
the elongation specified in the table.
9. Rotate the belt drive by hand in both directions. If
the belt tends to move axially in one direction or the
other, this is because the shafts are not parallel.
Adjust by means of the tensioning screws on the slide
rails until the belt remains in the centre of the pul-
leys when the pulleys are rotating.
10. When tensioning has been completed and the belt
remains in position when the drive is rotating, secu-
rely tighten the motor mounting bolts. Start by
tightening the bolts nearest to the pulley.
Distance between marks
Before tensioning After tensioning
(mm) (mm)
Type: F–0, F–1 Type: F–14, A–2, A–3, A–4
2,8% 2,5%
100 102,8 102,5
200 205,6 205,0
300 308,4 307,5
400 411,2 410,0
500 514,0 512,5
600 616,8 615,0
700 719,6 717,5
800 822,4 820,0
900 925,2 922,5
1000 1028,0 1025,0
If the belt moves sideways, adjust by means of the
tensioning screws of the guide rails or motor
bracket.
Tension the belt until the
elongation tabulated
above has been
achieved.
Use a straight
edge to check
that the pulleys
are in line.
Measurement distance
Fläkt Woods 4074 GB 05.05 6 Specifications are subject to alteration without notice
EU Air Handling Unit INSTALLATION
EUL(B,F) Fan
Moveing the motor to adjust the belt tension
The belt tension can be adjusted by moving the motor.
1. Remove the belt guard, if fitted.
2. Slightly back off the 4 mounting screws.
3. Use the tensioning screws to adjust the belt tension.
4. Check the alignment of the drive. Align by means of
the adjustment screw.
5. Retighten the mounting bolts.
6. Refit the belt guard if one was fitted
EUL(B,F)-11 through -53
Dismantling the EUL(B,F)-30-53 belt guard
(principle)
Fig. 15
EUL(B,F)-60 through -84
Adjustment screw
Mounting screwTensioning screw
Fig. 13
Fig. 14 Mounting bolt
Slide rail
Tensioning screw
Tensioning pad
Mounting screw
Sliding cover
plate for motor
shaft
Adjustment
screw
Fläkt Woods 4074 GB 05.05 7 Specifications are subject to alteration without notice
EU Air Handling Unit INSTALLATION
EUL(B,F) Fan
Belt pulleys
To remove and refit the belt pulley
Never hammer the belt pulley onto or off a shaft, since
even light blows and shocks may damage the bearing,
which will give rise to noise and an abnormally high rate
of wear.
To remove:
1. Remove the screws, oil them sparingly and screw one
of them into the extractor hole, i.e. the tapped hole in
the bush (see Fig. 16 and 17).
2. Tighten the screw until the bush is free of the hub and
the unit is free of the shaft.
3. Remove the pulley and the bush from the shaft as one
unit.
To fit:
1. Clean the bore of the pulley and the inside and outsi-
de of the bush to remove any anti-corrosion agent,
and make certain that the surfaces are completely free
from oil and dirt. Fit the bush into the pulley.
2. Oil the screws sparingly and loosely screw them into
the tapped holes in the pulley (see Fig. 16).
3. Clean the shaft and fit the pulley and bush onto the
shaft as one unit.
4. Tighten the screws alternately until they are all secure-
ly tightened.
Fig. 16
Fig. 17
Extractor hole
Screw Screw
Variable-pitch guide vanes
If the fan is equipped with variable-pitch guide vanes at
both inlets, check that the guide vanes can be reset from
the fully open position (max. air flow) to the required
partially closed position (reduced air flow).
Resetting is carried out by the control lever being tur-
ned by means of an actuator.
To avoid damage to the guide-vane linkage, check that
the actuator does not attempt to force the guide vanes
past the fully open or fully closed position.
All pivotal joints of the guide vanes have glass-fibre
reinforced nylon bearings which must not be lubricated.
Suitable actuators should have a torque of 15 Nm.
Fig. 18
Fig. 19
Fläkt Woods 4074 GB 05.05 8 Specifications are subject to alteration without notice
EU Air Handling Unit INSTALLATION
EUL(B,F) Fan
Checks to be made prior to starting the fan
– that the fan section is connected to the ducting or
equipped with necessary EULZ-04/08 protective
screen, Fig. 1, page 1, on the fan inlet and fan outlet.
– that an authorized electrician has given approval for
commissioning the unit.
– that the fan impeller rotates freely and that no objects
which can be drawn in and damage the fan have been
left in the installation.
Starting the fan
The fan must not be started with the damper on the suc-
tion or delivery side closed. However, the motor can be
briefly energized with the inspection cover open for
checking the direction of rotation.
Caution! When commissioning a new unit, check the
belt tension and adjust, if necessary, after 30 minutes
of operation.
Storage before installation
The storage area must not be exposed to vibrations from
the surroundings of a kind which can give bearing damage.
If the storage period exceeds 3 months, the belt drive
tension should be released and the fans should be rotated
by hand at regular intervals.
Fläkt Woods 4074 GB 05.05 9 Specifications are subject to alteration without notice
EU Air Handling Unit INSTALLATION
EUL(B,F) Fan
The q-DYSA®flow sensor is supplied if the EULB and
EULF fan is ordered with flow sensor (code suffix d = 5, 6).
The accuracy of the flow sensor is ±7% of the diffe-
rential pressure reading provided that the installation and
maintenance instructions are observed.
The analogue indicator instrument shows the air pres-
sure in m3/sec.
Installation
Vertically mount the instrument on a wall or against a
panel on the unit and secure it by means of the screws
supplied. The horizontal position of the instrument can
be adjusted by means of the built-in level.
Filling with manometer liquid
Back off the resetting screw completely and then screw it in
three full turns. This will enable zero setting adjustment in
both directions. Remove the filling screw. Fill the instru-
ment with the manometer liquid supplied, pouring the
liquid into the filler hole until the level of liquid reaches
the zero setting. Caution! Do not use any type of liquid
other than the manometer liquid supplied. Use the
resetting screw for fine adjustment of the zero setting.
Refit the filling screw and tighten it. If you have filled
the instrument with too much manometer liquid and can-
not adjust the zero setting to the proper position, insert a
pipe cleaner or the like in the filler hole to remove excessive
liquid or pour out a slight amount of liquid.
Hose connections
The 4 mm i.d. hoses supplied should be cut to the
appropriate length and should be connected from the
nipples on the upper frame member on the inspection
side to the nipples on the instrument, plus to plus and
minus to minus. Fasten the hoses as appropriate so that
they cannot be damaged or kinked.
Checks
The zero setting of the manometer should be checked at
regular intervals. To check the zero setting, remove the
hoses connected to the pressure connections of the
manometer. Whenever the need arises, use the resetting
screw to adjust the zero setting. Top up with manometer
liquid, if required.
The measurement nozzle should be blown clean with
compressed air once or twice a year depending on the
quality of the air. This can easily be done by disconnec-
ting the hoses from the instrument and blowing them
with compressed air to free the air passages from impuri-
ties.
Another type of pressure gauge may also be connected
for use as an alternative meter or for checking the perfor-
mance of the flow indicating instrument. In this case, fit
T-nipples in the hoses to the indicating instrument and
run hoses from them to the pressure gauge. The air flow
can be calculated by the expression:
q = 1· ∆pm
3/s
k
where the value of k is stated on the unit rating plate and
∆p is the measurement pressure in Pa.
Temperature correction
The flow scale on the indicator instrument and the above
flow equation are applicable to air at a temperature of
+20°C. At other air temperatures, the flow must be
corrected with the formula:
where q = the actual flow through the fan, q20 = the flow
reading and t = the present temperature in °C.
q = q20 ·√(273 + t) m3/s
293
Air flow measurement with q-DYSA®and analogue flow indicating instrument
Filling screw
Level
Resetting
screw
Flow indicating instrument
Flow sensor
q-DYSA®
(Pa)
-+
0
+
+
+
++
00
0
00.2
0.2
0.2
0.2
0.2 0.30.3
0.3
0.3
0.3 0.4
0.4
0.4
0.4
0.4 0.6
0.6
0.6
0.6
0.60.80.8
0.8
0.8
0.8
1.01.0
1.0
1.0
1.0
1.21.2
1.2
1.2
1.2
1.41.4
1.4
1.4
1.4
J4129410-2101
EULF-11
EULF-11
q =
19.86
1 p
m /s
3
MODEL M 700 PA MANOMETER
DWYER INSTRUMENTS, INC.
MICH. CITY IND. 46360 U.S.A.
∆p
Pa
Pa
Pa
Fläkt Woods 4074 GB 05.05 10 Specifications are subject to alteration without notice
EU Air Handling Unit INSTALLATION
EUL(B,F) Fan
EU size 1) 2) size 1 2) size 2 2) size 3 2) size 1 2) size 2 2) size 3
size 2 normal normal normal reinforced reinforced reinforced
K-factor m3/s at K-factor m3/s at K-factor m3/s at K-factor m3/s at K-factor m3/s at K-factor m3/s at K-factor m3/s at
500 Pa 500 Pa 500 Pa 500 Pa 500 Pa 500 Pa 500 Pa
11 30,76 0,727
20 15,89 1,41 21,34 1,05 16,42 1,36
21 10,07 2,22 16,42 1,36 10,72 2,09 8,12 2,75
22 8,21 2,72 10,72 2,09 8,12 2,75 6,51 3,43 6,51 3,43
30 8,21 2,72 10,72 2,09 8,12 2,75 6,51 3,43 6,51 3,43
31 5,07 4,41 6,51 3,43 4,57 4,89 3,90 5,73 6,51 3,43 4,57 4,89 3,90 5,73
32 3,61 6,19 4,57 4,89 3,90 5,73 3,03 7,38 4,57 4,89 3,90 5,73 3,03 7,38
33 3,61 6,19 3,90 5,73 3,03 7,38 3,90 5,73 3,03 7,38
40 3,61 6,19 4,57 4,89 3,90 5,73 3,03 7,38 4,57 4,89 3,90 5,73 3,03 7,38
41 2,89 7,74 3,90 5,73 3,03 7,38 2,30 9,72 3,90 5,73 3,03 7,38 2,72 8,22
42 2,22 10,1 3,03 7,38 2,30 9,72 1,99 11,24 3,03 7,38 2,72 8,22 2,23 10,03
44 2,22 10,07 2,30 9,72 1,99 11,24 2,72 8,22 2,23 10,03
50 2,22 10,1 3,03 7,38 2,30 9,72 1,99 11,24 3,03 7,38 2,72 8,22 2,23 10,03
51 1,69 13,2 2,30 9,72 1,99 11,24 1,50 14,91 2,72 8,22 2,23 10,03 1,75 12,78
53 1,4 16,0 1,99 11,24 1,50 14,91 1,35 16,56 2,23 10,03 1,75 12,78 1,35 16,56
60 1,4 16,0 1,99 11,24 1,50 14,91 1,35 16,56 2,23 10,03 1,75 12,78 1,35 16,56
62 1,09 20,5 1,50 14,91 1,35 16,56 1,08 20,70 1,75 12,78 1,35 16,56 1,08 20,70
64 0,85 26,3 1,35 16,56 1,08 20,70 0,80 27,95 1,35 16,56 1,08 20,70 0,80 27,95
71 0,85 26,3 1,35 16,56 1,08 20,70 0,80 27,95 1,35 16,56 1,08 20,70 0,80 27,95
73 1,08 20,70 0,80 27,95 0,68 32,88 1,08 20,70 0,80 27,95 0,68 32,88
80 0,85 26,3 1,35 16,56 1,08 20,70 0,80 27,95 1,35 16,56 1,08 20,70 0,80 27,95
82 1,08 20,70 0,80 27,95 0,68 32,88 1,08 20,70 0,80 27,95 0,68 32,88
84 0,80 27,95 0,68 32,88 0,52 43,00 0,80 27,95 0,68 32,88 0,52 43,00
Air flow measurement with q-DYSA®and analogue flow indicating instrument
Fläkt Woods 4074 GB 05.05 11 Specifications are subject to alteration without notice
EU Air Handling Unit INSTALLATION
Fan EUL(B,F)
Installation of the frequency converter
Warning: Incorrect installation of the frequency
converter can damage the bearings in the motor.
It is Fläkt Woods' policy to only except claims when
the motor and frequency converter have been sup-
plied and installed by us.
Damage to the motor will not be accepted when the
motor has been connected to the frequency converter
by an installation engineer not provided by Fläkt Woods.
The frequency converter and the motor must be installed
by a qualified electrician with good knowledge of speed
regulated, drive system installations (frequency converters)
and EMC-safety.
The following recommendations should be seen as a sup-
plement to the manufacturer's installation instructions. In
those cases where there are differences, the manufacturer's
instructions shall take precedence over the following; this is
due to the warranty undertaking from the manufacturer.
General
The installation between the motor and the frequency con-
verter should be carried out using screened, unbroken 4-
wire cable intended for EMC-installations for motor opera-
tions, the screen shall have at least 80% optical density, for
example, Nexan’s NCY or Ölflex Classic. The screen shall
have 360º contact with the casing both in the motor and in
the frequency converter to give the maximum contact sur-
face. Safety switches or connection boxes fitted between the
frequency converter and motor are not recommended.
Motor
The cable gland in the motor's outlet box should consist of
an EMC approved cable gland, for example, Miltronic
SKINTOP MS-SC. The screen conductor may only be
connected via EMC unions, not to earth bolts.
Frequency converter
Connection of the screening conductor shall be made via
an EMC approved union in the frequency converter's
casing or by using a clamp intended for this purpose. The
screen conductor must not be connected to an earth bolt.
Connection of the screen conductor
In those cases the screen conductor must be connected to
an earth bolt in the motor or frequency converter, this
should be done so that the impedance is as low as possible,
in these cases, this conductor is limited in length to 5 times
its width. For example, when the screen conductor is 1 cm
wide it must not be longer than 5 cm.
Diverse
Besides this, the following should be observed:
•type of mains supply.
•local regulations and provisions.
•the manufacturer's installation instructions for the fre-
quency converter.
Outputs over 22 kW
In the event of outputs over 22 kW, a symmetrical scree-
ned cable with concentric or in some other way sym-
metrically designed protective earth conductor should be
used, please refer to the installation instructions for the
frequency converter for recommendations concerning
these installations.
The screen
should have
360º contact
with the casing
The screen should
have 360º contact
with the casing
Insulating tape
Screen
Casing
Screen Insulating tape
/
