Schako VAQS DS0 Series User manual

Ferdinand Schad KG
Steigstraße 25-27
D-78600 Kolbingen
Telephone + 9 (0) 7 63 - 980 - 0
Fax + 9 (0) 7 63 - 980 - 200
info@schako.de
www.schako.de
Volumetric flow controller
VAQS
®

Contents
Construction subject to change. No return possible!
Volumetric flow controller VAQS
®
08/23 - 2 09.05.2019Version:
Description ........................................................................................................................................3
Field of application .....................................................................................................................................................................
Installation .................................................................................................................................................................................
Construction ..............................................................................................................................................................................5
Model .........................................................................................................................................................................................5
Accessories ................................................................................................................................................................................ 5
Models nd dimensions .........................................................................................................................5
Dimensions ................................................................................................................................................................................ 5
Dimensions of accessories ........................................................................................................................................................5
Technic l d t ....................................................................................................................................7
Volumetric flow range ................................................................................................................................................................ 8
Technical data for Belimo components....................................................................................................................................... 9
Operating control Belimo components........................................................................................................................................9
Circuit diagrams........................................................................................................................................................................10
Setting the operating potentiometers / calculation formulae .................................................................................................... 12
Technical data of the controller ................................................................................................................................................13
Functionality control .................................................................................................................................................................13
Startup using PC-Tool ..............................................................................................................................................................1
Startup using the setting and diagnostic device ZTH EU (Belimo) ........................................................................................... 15
Maintenance and service........................................................................................................................................................... 16
Legend ........................................................................................................................................... 16
Order det ils .................................................................................................................................... 17
Order det ils ZSQ ............................................................................................................................... 18
Specific tion texts .............................................................................................................................. 19

Volumetric flow controller VAQS
®
08/23 - 3
Construction subject to change. No return possible!
09.05.2019Version:
Description
The VAQS
®
volumetric flow controller impresses with its simple
design, high measuring precision and short length, meeting the
majority of customary requirements of volumetric flow control-
lers.
The volumetric flow controller allows the volumetric flow in
ducts to be kept constant or to be regulated using positive con-
trol V
min
, V
max
, "OPEN" or "CLOSED". The volumetric flow con-
troller can also be used as a room or duct pressure regulator. In
VAV systems the volumetric flow controller can regulate varia-
ble volumetric flows between V
min
and V
max
as a function of the
supply air (room temperature controller). The volumetric flow
setpoints V
min
and V
max
can also be altered at the controller at
a later stage, even after installation. Setpoints are initially set in-
factory according to the customer's requirements. If these val-
ues are set ex factory, the functions of the volumetric flow con-
troller are also checked. The V
min
and V
max
values can range
from 0 to 100 % (with V
min
) and 30 to 100% (with V
max
). The
measuring deviation is ± 5 %, based on V
nom
. Volumetric flow
controllers are in general insensitive to the inflow, owing to the
built-in measuring rods. 6 measuring points are distributed on
these measuring rods according to the median line method. In
comparison with measuring rods having only four measuring
points or measuring orifices, this gives optimum measurement
results.
When using the controllers in systems with heavy dust contam-
ination, suitable filters must be connected upstream. For pollut-
ed air, the volumetric flow controllers must be used with an
integrated controller with a static membrane pressure sensor. In
this case, it is absolutely necessary to observe the mounting po-
sition.
The volumetric flow controllers re not suit ble for ir con-
t ining sticky nd gre sy components.
For maintenance, service, retrofitting, etc., inspection openings
in sufficient number and size must be provided on site.
- simple design in accordance with the nominal size of the air
duct.
This simple design saves a lot of time and provides planning
safety.
- high controlling precision
Due to its high controlling precision, the controller requires a
straight flow section of only 1 x D even after bends.
- Blades sealing airtight to DIN EN 1751, Class 3
- Housing leakage air flow to DIN EN 1751, class B
- Damper axle support made of maintenance-free plastic
- in-factory presetting of the controllers
The controllers have been calibrated and preset in factory:
this in-factory presetting eliminates later setting operations
on-site. However, if a change must be made later on, the V
min
and V
max
settings can be simply adjusted using the ZTH-EU
setting device. For the calibration of the controllers, a curve
with a flow rate of 12 m/ sec is available. For constant-volume
volumetric flow controllers, the V
min
value will be set to the
desired constant-volume value.
- Tamper-proof
Since an on-site change in the volumetric flows can only be
done via the ZTH-EU, the controller is tamper-proof. Simple
rotary potentiometers are not tamper-proof!
- no later on-site volumetric flow controller setting necessary.
By virtue of the in-factory presetting, the on-site builder saves
the time required for on-site setting of the volumetric flow
controllers. Accordingly, the responsibility for setting the vol-
umetric flow controllers is not just passed on to the on-site
builder. This also reduces the on-site time pressure, since the
controllers do not have to be set on-site.
- Functional check possible via the ZTH-EU device.
The VAQS
®
volumetric flow controllers have already been
checked in-factory for their function. When the amount of air
changes on-site, a functional check can simply be carried out
by using the ZTH-EU device.
-
simple change in the amount of air via the ZTH-EU setting de-
vice
If the amounts of air preset in-factory must be adapted on-
site, this can be simply done by using the ZTH-EU device.
When the controllers are mounted in false ceilings, the ZTH-
EU can be simply inserted, and the setting and check can be
done comfortably inside the room. This is an advantage com-
pared with changing the settings of potentiometers, because
the potentiometers in false ceilings are often hard to get to
and difficult to see. If the changes in air volume are so large
that the calibration curve must be changed, the controllers
must either be recalibrated in-factory or the calibration curve
must be changed on-site by the customer service of Schako.
- Covers the majority of customary requirements
V
min
, V
max
and V
konstant
controls possible, as well as positive
control “Closed“ or positive control “Open“.
- Simple to connect
The controller contains the electrical wiring information. This
avoids wiring faults.
- Protection type IP 5
The controllers have the protection type IP 5 . A strain relief
for the cables has been integrated. For lower protection types,
e.g. IP 20, mounting into ventilation systems or central units
is not recommended.

Volumetric flow controller VAQS
®
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Construction subject to change. No return possible!
09.05.2019Version:
Field of pplic tion
When installing volumetric flow controllers, for example in roof
central units, in extreme cases, condensation can build up in the
measuring pipes of the volumetric flow controller as a result of
the large temperature differences between the air flowing
through the volumetric flow controller and the surrounding air.
This condensation can affect the measuring element. In these
cases, care must be taken that the casing of the volumetric flow
controller and the measuring pipes are insulated, thus avoiding
condensation.
Inst ll tion
Inst ll tion inform tion
To avoid unnecessary controller errors, the min. distances ac-
cording to the following table / drawings must be observed. For
combinations of several connection pieces or pieces with fire
dampers or silencers, the larger minimum distances must be
observed.
All volumetric flow controllers can be assembled with horizontal
or vertical damper axis.
Inst ll tion inform tion for VAQS
®
Dist nce to bent connection spigot
Dist nce to other connection pieces
(e.g. branching piece, reducing piece, T-junction, etc.)
Dist nce to fire d mper
Dist nce to silencer
- for supply and return air systems
- for constant or variable volumetric flows
- Positive control V
min
, V
max
, "OPEN" or "CLOSED"
- Suitable for constant and variable volumetric flow or duct
pressure control
- differential pressure range from 20 to 1000 Pa
- for duct velocities of 1 - 12 m/s
- for ambient temperatures of 0 - 50°C
Dist nce to: VAQS
®
Connection piece with bend 1 x diagonal
other connection pieces: (e.g. T-junction,
branching piece, reduction piece, etc.)
2 x diagonal
Fire damper: 2 x diagonal
Silencers: 2 x diagonal
min.
1 x diagonal
at least 2 times the diagonal
at least 2 times the diagonal
at least 2 times the diagonal

Volumetric flow controller VAQS
®
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09.05.2019Version:
Construction
Model
Accessories
Models nd dimensions
Dimensions
VAQS
®
...-DS0
Dimensions of ccessories
Acoustic cl dding (-DS2, insul tion 20mm)
20 mm thick sound-absorbing material with sheet metal casing
Av il ble sizes VAQS
®
/ ...-DS2
Housing
- Galvanised sheet steel
- Galvanized sheet steel with DD coating
Blades
- opposed, made of extruded aluminium profile
Blade seal
- made of PUR, silicone-free
- for airtight design to DIN 1751, Class 3
Blade support
- plastic
Measuring rods
- Aluminium
VAQS
®
- Rectangular design, for duct connection to DIN EN 1505,
for rectangular model, with blade seal. (air-tight to DIN EN
1751, Class 3)
- Housing leakage air flow to DIN EN 1751, class B
- with electric controller LMV/NMV-D3-MF, not MP-bus-ca-
pable
- Control voltage 2 V AC 50/60 Hz
- Temperature compensation from 10 - 0°C
Acoustic cladding (-DS 2)
- made of sound-absorbing, insulating 20 mm material with
sheet steel covering made of galvanised sheet steel, non-
flammable according to DIN 102-17. In this model, each
corner angle contains an M6 cage nut.
Setting and diagnostic device (-ZTH-EU, Belimo)
Mineral wool silencer (-ZSQ)
- Housing made of galvanised sheet steel. M2 metu profile
on both sides.
- Baffle frame made of galvanised sheet steel
- Mineral fibre boards according to DIN 102 A2, with glass
filament cover, biosoluble, abrasion-resistant
H
B
100
150
200
250
300
350
400
500
600
700
800
900
1000
100 x x x x x x x x x - - - -
200 - - x x x x x x x x x - -
300 - - - - x x x x x x x x x
400 - - - - - x x x x x x x x
500 - - - - - - - x x x x x x
x = available
- = not available
M6 cage nut

Volumetric flow controller VAQS
®
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09.05.2019Version:
Miner l wool silencer (-ZSQ)
with b ffles type MWK-OB
Av il ble sizes nd insertion loss
for miner l wool silencer (-ZSQ)
The parameters KA (number of baffles), K (baffle strength ) and S (gap width ) depend on the width B.
Connection side
for VAQS
with 1 b ffle with 2 b ffles with 3 b ffles
B
(mm)
KA
(-)
K
(mm)
S
(mm)
D
e
[dB/Okt]
f
m
(Hz)
63
125
250
500
1000
2000
4000
8000
150 1 100 50 2 6 16 26 8 8 33 15
200 1 100 100 1 3 9 18 36 37 22 13
250 1 100 150 1 2 7 16 26 2 1 8
300 1 100 200 0 1 3 6 13 13 8 5
350 1 200 150 2 5 13 23 30 28 15 9
400 1 200 200 1 11 19 25 20 11 7
500 1 200 300 1 7 8 15 15 8 5
600 3 100 100 1 2 9 22 36 30 17 12
700 3 100 133 1 2 8 18 28 2 1 10
800 2 200 200 1 11 19 25 20 11 7
900 2 200 250 1 8 10 17 17 9 6
1000 2 200 300 1 7 8 15 15 8 5

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®
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09.05.2019Version:
Technic l d t
Inflow re A (m²)
Actu tors
Flow gener ted noise (A = 1 m²)
R di ted noise (A = 1 m²)
Correction f ctor
(for flow generated and radiated noise)
H
(mm)
B (mm)
100 150 200 250 300 350 400 500 600 700 800 900 1000
100 0,01 0,015 0,02 0,025 0,03 0,035 0,0 0,05 0,06 - - - -
200 - - 0,0 0,05 0,06 0,07 0,08 0,10 0,12 0,1 0,16 - -
300 - - - - 0,09 0,105 0,12 0,15 0,18 0,21 0,2 0,27 0,30
400 - - - - - 0,1 0,16 0,20 0,2 0,28 0,32 0,36 0, 0
500 - - - - - - - 0,25 0,30 0,35 0, 0 0, 5 0,50
LMV-D3-MF
NMV-D3-MF
v
K
∆p
t
= 100 Pa ∆p
t
= 250 Pa ∆p
t
= 500 Pa ∆p
t
= 1000 Pa
(m/s)
L
W1
[dB/oct]
L
WA1
[dB(A)]
L
W1
[dB/oct]
L
WA1
[dB(A)]
L
W1
[dB/oct]
L
WA1
[dB(A)]
L
W1
[dB/oct]
L
WA1
[dB(A)]
f
m
(Hz) f
m
(Hz) f
m
(Hz) f
m
(Hz)
125
250
500
1000
2000
4000
125
250
500
1000
2000
4000
125
250
500
1000
2000
4000
125
250
500
1000
2000
4000
362 61 60 59 56 52 63 68 68 67 67 65 63 72 7 7 73 73 71 69 78 81 82 81 81 80 77 86
668 67 66 65 63 58 70 73 73 72 71 69 67 76 78 79 78 77 76 7 82 8 85 8 8 8 82 90
973 73 73 71 69 65 76 79 78 78 76 75 73 82 79 80 81 80 80 78 86 86 88 87 87 86 85 92
12 75 7 7 72 70 67 77 82 81 81 79 78 76 85 85 85 8 8 83 81 89 88 90 89 90 89 88 95
v
K
∆p
t
= 100 Pa ∆p
t
= 250 Pa ∆p
t
= 500 Pa ∆p
t
= 1000 Pa
(m/s)
L
W1
[dB/oct]
L
WA1
[dB(A)]
L
W1
[dB/oct]
L
WA1
[dB(A)]
L
W1
[dB/oct]
L
WA1
[dB(A)]
L
W1
[dB/oct]
L
WA1
[dB(A)]
f
m
(Hz) f
m
(Hz) f
m
(Hz) f
m
(Hz)
125
250
500
1000
2000
4000
125
250
500
1000
2000
4000
125
250
500
1000
2000
4000
125
250
500
1000
2000
4000
369 61 55 8 1 58 75 68 62 56 51 50 65 82 75 68 53 58 53 72 90 82 77 72 67 60 80
675 67 61 52 8 64 80 72 66 59 5 51 69 85 80 73 66 62 57 76 95 85 79 75 70 66 83
980 73 67 57 53 9 69 85 75 70 61 58 5 73 86 81 75 67 65 61 77 96 87 82 76 71 69 85
12 82 76 69 61 56 52 72 87 77 72 63 60 58 75 90 83 78 70 66 6 80 97 88 8 76 73 71 86
A (m²) 0,0 0,06 0,08 0,10 0,12 0,16 0,20 0,25 0,36 0, 0 0,50 0,60 0,80 1,00
KF (-) -1 -12 -11 -10 -9 -8 -7 -6 -5 - -3 -2 -1 0

Volumetric flow controller VAQS
®
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09.05.2019Version:
Volumetric flow r nge for VAQS
®
When the ir volume drops below the V
min
shown in the ch rt,
the correct functioning of the volumetric flow controller is no
longer gu r nteed!
Volumetric flow r nge
H V B (mm)
(mm) 100 150 200 250 300 350 400 500 600 700 800 900 1000
100
min. (m
3
/h) 36 5 72 90 108 126 1 180 216 - - - -
[l/s] 10 15 20 25 30 35 0 50 60 - - - -
m x. (m
3
/h) 32 6 8 86 1080 1296 1512 1728 2160 2592 - - - -
[l/s] 120 180 2 0 300 360 20 80 600 720 - - - -
200
min. (m
3
/h) - - 1 180 216 252 288 360 32 50 576 - -
[l/s] - - 0 50 60 70 80 100 120 1 0 160 - -
m x. (m
3
/h) - - 1728 2160 2592 302 3 56 320 518 60 8 6912 - -
[l/s] - - 80 600 720 8 0 960 1200 1 0 1680 1920 - -
300
min. (m
3
/h) - - - - 32 378 32 5 0 6 8 756 86 972 1080
[l/s] - - - - 90 105 120 150 180 210 2 0 270 300
m x. (m
3
/h) - - - - 3888 536 518 6 80 7776 9072 10368 1166 12960
[l/s] - - - - 1080 1260 1 0 1800 2160 2520 2880 32 0 3600
400
min. (m
3
/h) - - - - - 50 576 720 86 1008 1152 1296 1 0
[l/s] - - - - - 1 0 160 200 2 0 280 320 360 00
m x. (m
3
/h) - - - - - 60 8 6912 86 0 10368 12096 1382 15552 17280
[l/s] - - - - - 1680 1920 2 00 2880 3360 38 0 320 800
500
min. (m
3
/h) - - - - - - - 900 1080 1260 1 0 1620 1800
[l/s] - - - - - - - 250 300 350 00 50 500
m x. (m
3
/h) - - - - - - - 10800 12960 15120 17280 19 0 21600
[l/s] - - - - - - - 3000 3600 200 800 5 00 6000
- this table specifies the complete measuring range of the
standard controller (volumetric flow range).
- If the customer absolutely wants a calibration curve different
from 12 m/s, it must be specified!
- When the air volume drops below the V
min
shown in the
chart, the correct functioning of the volumetric flow controller
is no longer guaranteed!
- If only one air volume is specified in the order (as V
max
value),
the volumetric flow controller will be delivered as variable vol-
umetric flow controller. The V
min
value will be set to the value
specified in the catalogue.
- If only one air volume is specified in the order (as V
min
or
V
konstant
value or without value specification), then the volu-
metric flow controller will be delivered as a constant volumet-
ric flow controller. The volume specified in the order is set to
the V
min
value, and the V
max
value is set to 100%.
- The air volumes can be changed using setting devices specif-
ic for the controller make, depending on the calibration curve
set ex works.
- For the parameter setting of the control components (all con-
trollers), an air density of 1.2 kg/m³ has been taken into ac-
count.
- Belimo compact controllers are height-compensated. They
are calibrated ex works to the system height in question of the
specified installation site.
- If no system height is given in the order, the controllers will
be calibrated to the altitude of the delivery address.
- If the customer does not specify whether the "Parallel" or
"Master/Slave" operating mode is desired, the controller is set
for the parallel operation (Master/Slave mode only upon cus-
tomer request).
- for alternative controller types, a V-min from 2 m/s can be set
(pneumatic controllers from 3 m/s)

Volumetric flow controller VAQS
®
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09.05.2019Version:
Technic l d t for Belimo components
Me sured v lue collection nd control function
The measured values are collected by two measuring rods fa-
vourable to the flow. The measuring openings are distributed
over the measuring rods according to the median line method.
The pressure differential formed on the measuring rods is deter-
mined by means of a dynamic or static measuring sensor. From
these measuring results the middle value is formed, which gives
a measured variable for the volume flow. The controller com-
pares the actual value signal with the set point and sends a start
signal to the electric actuator which adjusts the controller devi-
ation independent of pressure changes in the duct network.
Attention:
The volumetric flow controllers equipped with the Belimo con-
trol type LMV/NMV-D3-MF are delivered as standard with a
SCHAKO 2 - 10 V DC drive (w-signal). Upon activation with 2 V
DC, the V
min
volume is set. The V
min
volumes can be seen from
the V
min
/ V
max
tables. When the V
min
volume drops below the
values shown in the V
min
/ V
max
table, then the control function
and the output of the U5 signal is no longer guaranteed for me-
trology reasons. Airtight sealing to DIN 1751 can be achieved by
means of a 0V actuator signal or via a positive control. This pos-
itive control "CLOSED" must be implemented on-site via a switch
contact.
Upon customer request, the volumetric flow controller equipped
with the Belimo control type LMV/NMV-D3-MF can also be de-
livered with the drive 0-10 V DC. However, please note that in
this case the positive control "CLOSED" can be implemented via
a diode, see page 10.
Oper ting control Belimo components
Positive control d mper "CLOSED"
Energy saving in areas not in use by closing the supply and re-
turn air volumetric flow controller. If the input Y is connected to
terminal 1 (see page 10) via an on-site switch for the oper ting
r nge 2-10 V DC, the drive will move the damper to the CLOSED
position. The drive will also close the damper if the setpoint val-
ue for the minimum volumetric flow V
min
has been set to 0%,
and the control signal corresponds to the value V
min
. This func-
tion does not correspond to the function of positive control
"CLOSED" via the switch contact.
Positive control d mper "OPEN"
Supports smoke extraction or is used as a safety position. The
volumetric flow controller is in this case inactive, and the damp-
er is driven to the mechanical open position.
V
min
control to min. volumetric flow
Depending on requirement or by not assigning them, individual
areas can be set to stand-by operation. In this way, minimum
room flushing with greatly reduced energy expenditure is
achieved.
V
m x
control to m x. volumetric flow
Individual or several rooms are supplied for a short period with
a maximum volumetric flow. This allows airing, night cooling
and quick heating to be implemented.
Continuous oper tion
As a function of the continuous command signal and the pro-
grammed operating area (2 - 10 V; 0 - 10 V) the LMV/NMV-D3-
MF will regulate the volumetric flow between the set values of
V
min
and V
max
.
Const nt oper tion
If terminal 3 (Y signal) has not been assigned, the air volume set
on the V
min
potentiometer will be set to a constant volume.
VAV-Comp ct (LMV/NMV-D3-MF)
The operation control is effected via the drive input w/z. The
possible functions depend on the selected operating mode "2-10
V" or "0-10 V" The diagrams below show the possible settings.

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®
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09.05.2019Version:
Circuit di gr ms
Comp ct controller Belimo m ke LMV/NMV-D3-MF - Attention: not MP-bus-c p ble
VAV with n logue comm nd sign l
MP / actual value signal
PC tool
VAV command signal
on site
VAV with lock (CLOSED)
Mode 2-10V DC
PC tool
VAV command signal
MP / actual value signal
Switchover CLOSED /
VAV operation
CLOS
ED
on site
Lock mode (CLOSED)
In the 2 - 10 V mode, the following function
can be carried out with a 0 - 10 V signal:
**Attention: Controller/DDC must be able to
pull the command signal to 0 V.
Com-
m nd sig-
n l Y
Volumetric
flow
Function
< 0.1 V ** 0 Damper CLOSED,
VAV control inac-
tive
0.2...2 V V
min
V
min
operating
stage active
2...10 V V
min
... V
max
Continuous opera-
tion V
min
... V
max
No. Design tion Wire colour Function
1 - ⊥ black ⊥
- Feed
AC/DC 2 V
2+∼ red ∼
+
3 Y white VAV / CAV command signal
5U orange - Actual value signal
}
C ble design tions
CAV oper tion / positive cont cts
Note: Please ensure mutual locking
of the contacts!
PC tool
VAV command signal
MP / actual value signal
on site
CAV function for LMV/NMV-D3-MF
Mode
setting
--- 0...10 V 0...10 V 0...10 V 0...10 V
2...10 V 2...10 V 2...10 V 2...10 V 2...10 V
Sign l ⊥0...10 V ∼ ∼ ∼
- 2...10 V +
Function 3 3 3 3 3
Damper
CLOSED
)
CLOSED
c)
CLOSED*
V
min
...V
max
b) VAV
CAV - V
min
everything open - V
min
ctive
Damper
OPEN e) OPEN*
CAV - V
max
d) V
m x
Contact closed, function active
Contact closed, function active, in mode 2 ...10 V only
Contact open
*
not available for DC 2 V supply

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®
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LED t ble of functions for LMV/NMV-D3-MF
.
Applic tion Function Description / ction
LED
p ttern
Ad pt tion
Address
⊕
⊕LED 1 power
LED 2 st tus
N1 operation Status display - 2 V power supply o.k.
- VAV-Compact ready for operation
S1 service function Synchronisation Synchronisation started by:
a) Operating / service unit
b) Manual trigger device at the VAV-Compact
c) Power ON behaviour
S2 service function Adaptation Adaptation started by:
a) Operating / service unit
b) Key on the VAV-Compact
V1 VAV service VAV service
active
a) Press both keys «Adaptation» & «Address»
simultaneously
b) VAV service will be activated:
- until 2 V supply is switched off
- until both keys are pressed
again
- after 2 hours have passed
Lack of air Damper opens as actual volume is too low
Target volume
reached
Control circuit balanced
Air excess Damper closes as actual volume is too high
LED 1
LED 2
LED 1
LED 2
Start Synch time →
LED 1
LED 2
Start Adaptation time →
LED 1
LED 2
LED 1
LED 2
LED 1
LED 2
LED 1
LED 2
green LED (power) is lit
yellow LED (status) is lit
yellow LED (status) is flashing

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®
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09.05.2019Version:
Setting the oper ting potentiometers / c lcul tion
formul e
Set v lue for V
m x
The required volumetric flow that is to flow at the 10 V DC com-
mand signal at terminal 3 (Y) or with positive control V
max
is set
in % at the V
max
potentiometer of the controller, the ZTH-EU or
PC-Tool. This value refers to the set V
nenn
nominal volumetric
flow.
Set v lue for V
min
The required volumetric flow that is to flow at the 0 V DC com-
mand signal (operating mode 0-10 V DC) or at the 2 V DC com-
mand signal (operating mode 2 - 10 V DC) at terminal 3 (Y) or
with positive control V
min
is set in % at the V
min
potentiometer
of the controller, the ZTH-EU or PC-Tool. This value refers to the
set V
nenn
volumetric flow.
C lcul tion of the U
5
volt ge v lue
Oper ting mode: 2 - 10 V DC:
V
max
values
V
min
values
Oper ting mode: 0 - 10 V DC:
V
max
values
V
min
values
C lcul tion of the V
nenn
volumetric flow
[m³/h]
The calibration curve is usually
12 m/s. Upon customer request,
a smaller value can be selected.
Actu l v lue me surement vi feedb ck sign l U
5
using
voltmeter or PC-Tool
LMV/NMV-D3-MF
Supply voltage: 2 V AC/DC
(Terminals 1+2)
Measurement output 2 - 10 V DC
(Terminals 1+5)
Measurement output 0 - 10 V DC
(Terminals 1+5)
The actual value signal U
5
is a real feedback of the volumetric
flow actual value for monitoring and controlling the air through-
put volume.
U
5
sign l 0-10 V DC
Ex mple
U
5
sign l 2-10 V DC
Ex mple
Attention: The V
nenn
value changes as a function of the set cal-
ibration curve.
EWVm x
Vm x
Vnenn
---------------- 100%×=
EWVmin
Vmin
Vnenn
---------------- 100%×=
U5
Vm x
Vnenn
---------------- 8V 2V+×=
U5
Vmin
Vnenn
---------------- 8V 2V+×=
U5
Vm x
Vnenn
---------------- 10V×=
U5
Vmin
Vnenn
---------------- 10V×=
Vnenn EK F 3600××=
EW (%) = Set value
EK (m/s) = Calibration
curve
U
5
(V DC) = U
5
signal
F (m²) = Area
Assume: Measurement output signal U
5
= 6.3 V DC
Calibration value VAQS = 12 m/sec
Measured value: Duct velocity = 7.6 m/s
Air volume:
Duct velocity x area m² x 3600 = m³/h
Assume: Measurement output signal U
5
= 6.3 V DC
Calibration value VAQS = 12 m/sec
Measured value: Duct velocity = 6.3 m/s
Air volume:
Duct velocity x area m² x 3600 = m³/h

Volumetric flow controller VAQS
®
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09.05.2019Version:
Technic l d t of the controller
LMV/NMV-D3-MF (make Belimo)
Dynamic pressure sensor, digital VAV controller and damper
drive VAV-Compact solution
Function l control
LMV/NMV-D3-MF: Function l control
Electric l connection
Apply supply voltage 2 V AC (±10%) to terminals 1 + 2.
Is the polarity of the system neutral conductor correct?
ß
LMV/NMV-D3-MF / ZTH-EU :
Has the ...MV-D3-MF been set to the correct operating mode?
(Check using the connected setting device ZTH EU!)
ß
Drive:
Use the ZTH-EU to set operating mode 2-10 V and connect ter-
minals 1+3 of the LMV-D3-MF.
Does the drive move to the "CLOSED" position?
ß
V
m x
:
Connect terminals 2+3 of the ...MV-D3-MF and disconnect U
5
connection to the ZTH-EU.
If the ...MV-D3-MF controls to V
max
- Check actual value signal
U
5
.
Measuring principle : Pressure reading with volumetric flow
Measuring range of the
sensor :
2... ~ 50 Pa
Supply voltage : AC 2 V 50/60 Hz; DC 2 V
Functional range : AC 19.2...28.8 V; DC 21.6...28.8V
Power consumption: 2 W / 3W
Dimensioning : 3.5 VA / 5 VA
Torque : min. 5 Nm/10 Nm at the rated voltage
Control function :
VAV/CAV/Open-Loop;
Supply/return air or stand-alone operation;
master/slave parallel circuit;
Mixing box control
Setting range
V
min
/V
max
:
V
min
= 0...100% of set V
nenn
volumetric flow
V
max
= 30...100 % of set V
nenn
volumetric
flow
Command variable Y:
(Input resistance min.
100 kΩ)
DC 2-10 V ( ...20 mA with 500 Ω input re-
sistance)
DC 0-10 V (0...20 mA with 500 Ω input re-
sistance)
adjustable DC 0...10 V
Setting range actual val-
ue signal U
5
:
DC 2...10 V
DC 0...10 V
Sensor connection : Passive (Pt1000, Ni1000, etc.) and active
sensors (0...10 V), for example tempera-
ture, humidity, 2-point signal (switching
power 16 mA @ 2 V), for example switch,
presence detector
Protection class : III (safety extra low voltage)
Degree of protection : IP 5 (hose-connected)
EMC: CE according to 39/336/EEC
Measuring air and ambi-
ent temperatures :
0° C...+50° C, 5...95% rH, non-condensing
Storage temperature : -20° C...+80° C
Sound power level: max. 35 dB (A)
Operation and service : plug-in via service socket / PC-Tool (from
V3.1) / ZTH-EU
Communication: PP, max. DC 15V, 1200 Baud
Connection : Cable, x 0.75mm², terminals
Weight: approx. 500g / approx. 700g
Þ
No: Check wiring according to the diagram. Check trans-
former power.
→
LMV-D3-MF 5 VA
Þ
Yes: ...MV-D3-MF / ZTH-EU
Þ
No: Set the operating mode on the ZTH-EU and save it.
→
Operating modes: 0-10 V, 2-10 V
Þ
Yes: Drive
Þ
No: Contact the VAQS manufacturer
Þ
Yes: V
m x
Þ
No: Check the V
max
potentiometer on the ZTH-EU and
compare the settings with the technical data on the
VAV device.
→
If the drive moves to the "OPEN" position, and
the maximum volume is not reached, then the
duct pressure is too low.
Þ
Yes: Set the system-specific operating mode on the ZTH-
EU.

Volumetric flow controller VAQS
®
08/23 - 14
Construction subject to change. No return possible!
09.05.2019Version:
St rtup using PC-Tool
Direct connection in the switch c binet or socket
(tr dition l pplic tion)
ZTH EU s MP level converter
Description
The ZTH EU is also a potential-free interface between the USB
port of a PC and the Belimo MP bus. It is used to connect the
Belimo PC-Tool directly to the MP bus or directly to a program-
mable MFT drive.
Power supply
The ZTH EU is supplied with power by the USB port. The MP bus
voltage is obtained internally by means of DC/DC converter. This
is why no external power supply is necessary.
Driver
To be able to work with the ZTH EU, a suitable driver must be
installed on the PC. The driver can be downloaded from the Be-
limo website (download section). After installation of the driver,
the ZTH EU device will log in to the PC as a virtual COM interface.
Note
For connection to USB ports of PCs and BELIMO-2 V drives
only (to safety extra low voltage SELV or US class 2 feeds).
Connection di gr m 1
Local connection via a service socket of the MF/MP or LON drive
using a ZK1-GEN cable.
Connection di gr m 2
Local connection via a connecting cable of the MF/MP or LON
drive using a ZK2-GEN cable.
1.) white = GND
green = MP
blue = not connected
...A-MF
...A-MP
...D3-MP
...ALON
...D3LON
1.)
...LON
...ALON
...D3LON
...MFT(2)
A-AF
...A-MP
...D3-MP

Volumetric flow controller VAQS
®
08/23 - 15
Construction subject to change. No return possible!
09.05.2019Version:
St rtup using the setting nd di gnostic device ZTH
EU (Belimo)
Short description
The VAV setting device ZTH EU allows efficient testing of VAV
and CAV installations. Installations fitted with the Belimo VAV
controller can be simply adapted to the room and user require-
ments.
The VAV setting device ZTH EU replaces the previous setting de-
vice ZTH-GEN (2007-201 ).
All standard Belimo VAV controllers with integrated PP commu-
nication (from 1992) that are sold in the EU can be set using the
ZTH EU.
Specific tions:
easy, quick setting of the VAV boxes parameters
diagnostic function
one tool for all VAV units
voltage supplied by VAV controllers - no batteries required!
service socket VAV / CR2 controller, PP connection
includes connecting cable RJ12 6/ , 6-pin plug
New generation, MP bus tester
for functional test of MP bus
backward compatible with all Belimo PP / MP units from 1992
efficient handling, can be operated with one hand
Selection of stages for test (OPEN/CLOSE/MIN/MAX/STOP)
Damper position indicator for diagnostics
Display of the setpoint / actual volume and V
min/max
setting in
m³/s (l/s).
Keys / Displ y:
2 x 16-digit LCD with background lighting
Connection:
Locally via service socket
Dimensions:
85x65x23 (WxHxD)
Connection nd supply
Stand-alone operation:
Connection including supply takes place via the service socket
at the VAV controller or via the terminals.
Bus operation:
The ZTH EU can be used in the following units while the bus is
running if it is connected via the local service socket: VAV-Com-
pact L/N/SMV-D3-MP, NMVAX-D3-MP, L/NMV-D3LON.
With the VRP-M, L/NMV-D3-M and NMVAX-D3-MP, the MP bus
must be disconnected when the service socket is used.
Restriction:
Direct connection in an MP network or via an MP-Bus master is
not possible.
The ZTH EU comes with a quick start guide de/en to be affixed
to the back of the unit.
Forwards / Backwards
Change value / status
OK Confirm input
ESC Cancel input/ Leave submenu/ Discard changes
i shows additional information if available

Volumetric flow controller VAQS
®
08/23 - 16
Construction subject to change. No return possible!
09.05.2019Version:
M inten nce nd service
Assembly nd m inten nce instructions
Cle ning of the dyn mic differenti l pressure sensor
The dynamic differential pressure sensor integrated into the
LMV/NMV-D3-MF requires little maintenance. However, if, de-
pending on the degree of pollution of the air, unexpected volu-
metric flow deviations occur, then the following procedure is
recommended.
Legend
1. When the device is delivered, check whether the controllers
are complete and have been delivered without damage.
Complaints have to be communicated immediately and di-
rectly to the transporter and SCHAKO.
2. The volumetric flow controller must not be carried on the
regulation components, measuring cross or the damper
leaf, but only on the housing.
3. The controllers must be carefully stored on-site. They must
be protected from dust, dirt and from direct weather effects.
. The controllers must be assembled in a way to allow in-
spection.
5. Assembly must be carried out by expert personnel, observ-
ing recognised technical rules and regulations.
6. For polluted ir, the volumetric flow controllers must be
used with n integr ted controller with st tic membr ne
pressure sensor. In this c se, it is bsolutely necess ry
to observe the mounting position. The volumetric flow
controllers re not suit ble for ir cont ining sticky nd
gre sy p rticles.
1. Pull off the pressure hoses from the sensor connection pipe
of the LMV/NMV-D3-MF.
Attention! Make a note of the (+) and (-) assignments.
2. Using a suitable hand pump, blow air into the (-) connection
spigot of the sensor (this will blow any dirt deposited inside
the sensor out of the (+) connection spigot).
3. Remove any dirt that may have formed from the connecting
pieces and hose ends.
. Reconnect pressure hoses, (+) and (-) as before.
5. Carry out a functional check of the controller.
V (m³/h) [l/s] = Air volume
V
min
(m³/h) = Minimum air volume
V
max
(m³/h) = Maximum air volume
EW
Vmax
(m³/h) = Set value of maximum air volume
V
Nenn
(m³/h) = Nominal air volume
v
K
(m/s) = Duct velocity
D
e
[dB/Oct] = Insertion loss
∆p
t
(Pa) = Pressure loss
∆p
t min
(Pa) = Minimum static pressure difference
L
W
[dB/Oct] = Sound power level/octave
L
WA
[dB(A)] = A-weighted sound power level
f
m
(Hz) = Octave band centre frequency
U5 (V) DC = Measurement output (electric voltage)
NW (-) = Nominal width

Volumetric flow controller VAQS
®
08/23 - 17
Construction subject to change. No return possible!
09.05.2019Version:
Order det ils VAQS
S mple
VAQS-0250-200-DD-A007-0-00200-01500-DS2-NA
Volumetric flow controller type VAQS, rectangular design | width 250 mm | height 200 mm | galvanised sheet steel with DD-coating
| with LMV-D3-MF SO | 0-10 V | V
min
=200 m³/h | V
max
=1500 m³/h | with acoustic cladding 20 mm | no spring return actuator
Order det ils
01 - Type
02 - Width
03 - Height
04 - M teri l
05 - Att chment ssembly
06 - Mode
07 - Volumetric flow - Set v lue V
min
/ V
kon
08 - Volumetric flow set v lue V
m x
09 - Acoustic cl dding
10 - D mper position
01 02 03 04 05 06 07 08 09 10
Type Width Height Material Attachment
assembly
Mode Volumetric flow
V
min
Volumetric flow
V
max
Acoustic
cladding
Damper position
Ex mple
VAQS -0250 -200 -DD -A007 -0 -00200 -01500 -DS2 -NA
VAQS = Volumetric flow controller type VAQS
rectangular design
0100 - 0150 - 0200 - 0250 - 0300 - 0350 - 0 00 - 0500 - 0600
- 0700 - 0800 - 0900 - 1000
0100 - 0200 - 0300 - 0 00 - 0500
SV = Galvanised sheet steel (standard)
DD = DD-coating on the inside with galvanised sheet steel
A007 = LMV-D3-MF SO (5 Nm, standard)
A008 = NMV-D3-MF SO (10 Nm for B > 500 mm)
Other modules available upon request
0 = 0-10 V
2 = 2-10 V (standard)
00000 = ex-works according to table
xxxxx = 5-digit customer value in m³/h
00000 = ex-works according to table
xxxxx = 5-digit customer value in m³/h
DS0 = without acoustic cladding (standard)
DS2 = Acoustic cladding with 20 mm
NA = no spring return actuator (standard)
NO = currentless OPEN - normally open
NC = currentless CLOSED - normally closed
(only for drives with spring return)

Volumetric flow controller VAQS
®
08/23 - 18
Construction subject to change. No return possible!
09.05.2019Version:
Order det ils ZSQ
Ex mple
ZSQ-1000-0400-SV-M2
Mineral wool silencer, rectangular design, with baffles type MWK-OB | width 1000 mm | height 00 mm | galvanised sheet steel |
with METU flange M2
Order det ils
01 - Type
02 - Width
03 - Height
04 - M teri l
05 - Profile connection
01 02 03 04 05
Type Width Height Material Profile connection
Ex mple
ZSQ -1000 -0 00 -SV -M2
ZSQ = Mineral wool silencer, rectangular design, with baf-
fles type MWK-OB
xxxx =
Value must be entered with digits (0150 to 1000 mm)
xxxx =
Value must be entered with digits (0100 to 0500 mm)
SV = Galvanised sheet steel
M2 = Metu profile M2 for VAQS
®

Volumetric flow controller VAQS
®
08/23 - 19
Construction subject to change. No return possible!
09.05.2019Version:
Specific tion texts
Volumetric flow controller in rectangular design, for duct con-
nection to DIN EN 1505, for use in supply and return air systems
for constant or variable volumetric flow, room or duct pressure
regulation. With positive control V
min
, V
max
or "CLOSED". Al-
lowed pressure difference range: 50-1000 Pa, allowed ambient
temperature 0-50°C.
Suitable for use with duct velocities of 1-12
m/s.
It is possible to subsequently adjust the manufacturer set
operation volume flow. The output signal can be used for mas-
ter/slave or parallel operation of several controllers or for actual
value display 2-10 V DC (0-10 V DC), which corresponds to 0-
100 % of the set V
nenn
in DDC/ZLT systems.
Housing made of galvanised sheet steel. Opposed blades,
blades sealing air-tight to DIN EN 1751, Class 3, housing leak-
age air flow to DIN EN 1751, class B, made of aluminium. Meas-
uring rods made of aluminium, blade support made of plastic.
With electric controller LMV/NMV-D3-MF, control voltage 2 V
AC, 50 / 60 Hz, requirement: measuring air 0...+50°C/5...95%
rH, non-condensing, wired and adjusted in-factory. Right-hand
design.
Product: SCHAKO type VAQS
®
Housing (at an extra charge):
Accessories (at an extra charge):
- galvanised sheet steel with DD coating (-DD)
- Acoustic cladding (-DS2) made of 20 mm sound-absorbing
material with sheet metal casing made of galvanised sheet
steel, non-flammable according to DIN 102-17. Includes M6
cage nuts at the corner angles.
- Mineral wool silencer (-ZSQ) with M2 Metu profile on both
sides, housing (L=1500) consisting of galvanised sheet steel
with integrated MWK-OB silencing baffles (L=1000). The
MWK-OB silencing baffles, with RAL quality seal, consist of
abrasion-resistant mineral fibre boards covered with fibre
glass filament (biosoluble, non-flammable to DIN 102) in a
frame of galvanised sheet steel. Baffles measured to ISO/DIS
7235 and to DIN 56 6.
- Setting and diagnostic device ZTH-EU (Belimo)
- MP-bus-capable electric controller LMV-D3-MP, NMV-D3-
MP
This manual suits for next models
4
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