IRIS-M

1. INSTALLATION
Iris-M is delivered as a ready installable package. Do not remove the motor for
installation or turn the motor when installing the damper in its place. These actions may
have an effect on the mechanical functioning of the damper. During installation, beware
of the sharp edges of the damper blades. Make sure the duct is sufficiently supported, so
that no torsion is directed to a damper installed in a horizontal duct, and no weight
caused by the duct is directed to a damper installed in a vertical duct.
Iris-M is to be installed in
the duct so that the damper
position indicator is readable.
To make sure no condensed
water can flow from the duct
to the motor casing, do not
position the damper so that
the motor is right underneath
(Fig. 2).
Leading the cables through the TET-membrane inlets:
Pierce the membrane with the cable or a Phillips screwdriver.
Push the cable through (1, Fig. 3).
Secure the cable by pulling it back a bit (2).
The cable penetration is now ready.
Note! To make sure that the tightness class of the
damper does not change, do not remove the membrane
or pierce it unless you lead through a cable.
The product must be installed so that it can
easily be detached from the ducts.
2. ELECTRICAL CONNECTIONS
IRIS-M CONTROLLED WITH A HAND SWITCH
- 3-POSITIONS SWITCH
1 2 3 1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
ELECTRICAL CONNECTION
VIA SAFETY ISOLATING
TRANSFORMATOR
Fig. 2.
Fig. 3.
Do not connect your Iris-M to the power supply before installation, since the mechanical
operation of an uninstalled damper poses a risk of bodily harm.
The feeding of the 24 VAC supply voltage shall be arranged so that every damper
/damper group can be cut off separately, e.g. by connecting the supply voltage to the
wire with a plug connector (included in the delivery) connected to terminals 1 and 2 of
terminal block J3 (see A in Fig. 1) or install a specific cut-off switch. For other electrical
connections, just remove the plexiglass cover of the motor casing; the casing itself does
not need to be removed. Terminals 3 and 4 (B) serve for sending control signals to the
slave damper (if installed) connected in a cascade with the master damper.
It is absolutely necessary that the slave damper supply voltage has the same
polarity as the master damper supply voltage. Make also sure that all the other
devices connected to the same power source (room regulators, carbon dioxide
sensors, other IRIS-M dampers) have the same polarity.
The control (instrumentation) cables shall be connected as shown in the wiring diagram.
Motor-driven Iris dampers are controlled either with a hand switch (Fig. 4)or by external
voltage or current signals (0...10 VDC or 4...20 mA). See Fig. 5. Control signals from a
master damper to a slave damper are always current signals (4..20 mA).
Fig. 4.
The connections of jumpers J5, J7 and J8 (C) are determined by the control signal type
used (D). If the damper is operated with the 3-position hand switch, all the three jumpers
remain unconnected. However, the jumpers of Iris-M slave dampers are always
connected in the same way (J5 and J8 connected) regardless of how the master damper
is controlled.
The switch is supplied via terminals 5 and 7 of terminal block J3, and control signals
(2…10 V) from the switch are delivered via terminal 6 (Fig. 4).
24 V AC
D
H
G
C
A
B
J3
24V~
50...60Hz
4,5W
JUMPER SETTINGS
J5 J7 J8
q v max
q v min
J8
J7
J5
ABB Fläkt Oy
Div. Lapinleimu
IRIS-M
J3- 6 2...10VDC
J3- 6
J3- 6 4...20mA
1 2 3 4 5 6 7 8
24V AC
4...20mA
IRIS-M CONTROLLED WITH A SENSOR
STEPLESS REGULATION MIN - MAX
- CARBON DIOXIDE
- HUMIDITY
- TEMPERATURE
+ -
ELECTRICAL CONNECTION
VIA SAFETY ISOLATING
TRANSFORMATOR
IRIS-M
INSTALLATION, MEASUREMENT AND ADJUSTMENT
10V DC
JUMPER
SETTINGS
0...10 V DC
2V DC
JUMPER
SETTINGS
2...10 V DC
ref.
2...10VDC
4...20mA
q v
IP 55
TO ENVIRONMENT
WHEN INSTALLED
JUMPER
SETTINGS
4...20 mA
DEFAULT
SLAVE
POWER
OPERATION
POSITION
CLEANING
POSITION
SWITCH
UNDER
COVER
A BB
Kuva 1.
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
F
E
I
03.02.2006
When the damper is controlled with a voltage or current signal, the connections are made
as shown in Fig. 5. Make sure that the device used for controlling has the same polarity
and the signal used for controlling has the same zero level as Iris-M.
Fig. 5.
Control signals are always sent to terminal 6, irrespective of the control signal
type. The signal earth shall always be connected to terminal 8.
Incorrect polarity of control signals and electrically too strong signals will cause
damage to the damper!
Before connecting the damper to the power supply, make sure that the jumpers are
connected as the signal type requires by checking the motor signal lamps (the green one
(E) shall be on continuously, a yellow one (F) only when the motor is running = max.
three minutes) and the damper position indicator.
Make sure that the cleaning switch (I) is in the right position (operation position)

3. MEASUREMENT AND REGULATION OF AIR FLOW
Iris-M is designed so that all that needs to be removed before installing/adjusting the
damper is the plexiglass cover of the motor casing. The casing may be opened with
permission from the manufacturer only.
If the damper is controlled with a 3-position manual switch, the
minimum air change rate and the air change rate during
forced ventilation are set with the trimmers (H and G) on the
circuit board. First set the minimum air change rate with
the q v min trimmer (G) and then the air change rate during
forced ventilation with the q v min trimmer (H).
The factory settings of Iris-M are 8 (minimum) and 2 (forced).
The basic air change rate is set with the trimmer situated
under the cover of the manual switch.
(Fig. 6.).
A regular two-way switch can also be used for controlling, in
which case only two air change rates (min and max) can be
used.
If the damper is controlled with sensors (Fig. 5), minimum Fig. 6.
and maximum air change rates are set, between which the
air flow is adjusted according to needs. The air change rates are set with the trimmers (H
and G) on the circuit board so that the minimum air flow is set with the control voltage
value 0/2 V and the maximum air flow with the value 10 V.
When setting air change rates, make sure that the operating switch is in the
corresponding position or alternatively so that the control voltage value corresponds to
the position being set. The min. and max. damper positions given on the scale must not
be exceeded. The air change rate is defined according to the diagrams on basis of the
pressure difference over Iris-M and the adjustment position. The pressure difference is
measured from the manometer connections of the damper.
4. SERVICE
Before starting service operations, e.g. cleaning of the ducts, Iris-M must be fully opened
(cleaning position) with the cleaning switch (I). To do this, remove the plexiglass cover of
the motor casing. After completing the service operations, move the cleaning switch back
to the original position (operating position) and fix the plexiglass cover back to its place.
If the damper is installed close to a service hatch or duct end allowing access to the
moving parts inside the damper, the service hatch or duct end must be provided with a
sign indicating danger (SFS EN 294).
5. TROUBLESHOOTING
- Check the power connection to the device, the power light (E) is on.
- Check that all devices connected to the system have the same polarity of supply
voltage.
- Check the correct position of the jumpers (D).
- Check the position of the cleaning switch (I).
- Check the value of the control current (0…10 V).
Fläkt Woods Oy
P.O.Box 6
FIN-37801 Toijala, FINLAND
Tel. + 358 20 442 3000
Fax + 358 20 442 3502
Pa
,
IRIS-M MEASUREMENT DIAGRAMS
m
p
Pa
,
m
p
Pa
,
m
p
400
300
200
50
40
30
20
10
5
400
300
200
50
40
30
20
10
5
400
300
200
50
40
30
20
10
IRIS-M
100
5
1 3 5 10 20 30 40 50 100 1 3 5 10 20 30 40 50 100 150
q , l/s
q , l/s
IRIS-M
160
5 10 20 30 40 50 100 200 250 5 10 20 30 40 50 100 200 300 400
q , l/s
q , l/s
IRIS-M
250
5 10 20 30 40 50 100 200 300 500 1000 30 50 100 200 300 400 500 1000 1400
q , l/s
q , l/s
p = (q / k)
m v
2
v
v
v
Pa
,
m
p
Pa
,
m
p
Pa
,
m
p
400
300
200
50
40
30
20
10
5
400
300
200
50
40
30
20
10
5
400
300
200
100
50
40
30
20
10
5
IRIS-M
125
IRIS-M
200
IRIS-M
315
q = k p
v m
IRIS-M 1 1,5 2 2,5 3 3,5 4 4,5 5 5,5 6 6,5 7 7,5 8 8,5 min
100 10,4 7,9 7,5 6,6 6,0 5,2 4,5 3,8 3,4 2,9 2,5 2,1 1,7 1,2 0,9 0,4 0,2
125 13,8 10,4 8,8 7,3 6,5 5,5 4,7 4,0 3,5 3,1 2,7 2,2 1,5 1,0 0,9 - 0,5
160 22,1 17,2 14,8 13,4 12,5 11,5 10,7 9,5 8,5 7,5 6,8 5,6 4,9 4,0 3,5 2,6 2,1
200 44,2 36,6 30,9 26,9 23,2 20,6 18,2 15,9 14,0 12,3 11,0 9,6 8,4 6,5 5,0 3,0 1,1
250 64,4 53,5 45,6 41,8 38,7 34,5 30,7 27,3 24,1 21,4 18,4 15,8 12,8 10,9 8,9 6,1 3,2
315 118 88,3 70,0 64,5 58,7 53,0 45,1 42,4 37,0 33,3 30,0 25,9 21,8 19,0 15,8 12,9 10,3
k
v
v
v