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Slim VAV damper unit
Slim VAV damper unit

Halton Max Slim Box (MSB) – Airflow management damper

This slim VAV damper is ideal for renovation, corridors and other spaces where the height of the damper is a critical requirement.
So easy to install as no safety distance is required.

  • Can be used in both air volume or air pressure control application
  • Integrated sound attenuation

Overview

Slim damper, ideal for renovation, corridors and other spaces where the height of damper is critical. Easy to install as no safety distance is required.

Applications

  • Variable (VAV) and constant (CAV) airflow control applications
  • Supply and exhaust installations

Key features

  • Rectangular low-profile airflow management damper
  • Suitable for VAV supply or exhaust applications
  • Can be installed without the need for straight duct lengths
  • Highly accurate airflow measurement
  • Can be used in both air volume or air pressure control applications
  • Integrated sound attenuation
  • Can be connected to Buildings Management System (BMS)

Operating principal

MSB_function2

Fig.1. Halton Max Slim Box, supply

The Halton Max Slim Box includes a closed loop controller, comprising an aluminium differential pressure measuring probe, an actuator mounted on the damper blade spindle and a controller. This system allows the air volume to be accurately regulated independently of variations in upstream pressure. It can be used in a supply or exhaust application. Measurements made by the differential pressure sensor are sent to the controller which compares these values with the required room setpoint value. The controller compares the actual values with the setpoint value and sends a signal to the actuator which adjusts the position of the damper to compensate for the difference.

The Halton Max Slim Box includes a closed loop controller, comprising an aluminium differential pressure measuring probe, an actuator mounted on the damper blade spindle and a controller. This system allows the air volume to be accurately regulated independently of variations in upstream pressure.

It can be used in a supply or exhaust application. Measurements made by the differential pressure sensor are sent to the controller which compares these values with the required room setpoint value. The controller compares the actual values with the setpoint value and sends a signal to the actuator which adjusts the position of the damper to compensate for the difference. An analogue signal to alter the setpoint value can also be sent to the controller and the flow rate will then be adjusted to the new setpoint. Volume flow rates are regulated between the pre-set min. and max. values in the controller.

MSB_supply

Fig.2. Halton Max Slim Box, supply

MSB exhaust

Fig.3. Halton Max Slim Box, exhaust

The Halton Max Slim Box is used for the following applications:

  • Constant airflow
    To get a stable airflow without influenced by the pressure variation ductwork
  • Variable airflow
    The airflow is managed according the CO2 or occupancy in the room
  • Duct pressure
    To get a stable pressure in the ductwork for specific terminal like diffuser, chilled beam that can be required a constant pressure.

Key technical data

Description

Value

Duct connection sizes (mm) W = 200, 300, 400, 600, 800
H  = 150, 250
 Material Galvanised steel
Air velocity range  1 – 10 m/s
Operating range (ambient temperature)  0-50 ℃
Ambient relative humidity
(non-condensing)
< 95%
Communication interface Modbus RTU, analogue, MP-Bus, LON, BACnet MSTP
Maintenance  Maintenance-free

Quick selection

Halton Max Slim Box MSB quick selection

Structure and materials


 No.  Part  Material
1 Plenum Galvanised steel
2 Measurement probe Aluminium
3 Blade Aluminium
4 Perforated sheet Perforated sheet
5 Insulation Glasswool

Actuators

A range of actuators are available for various application needs.

All actuators include an integrated dynamic differential pressure sensor with a low bypass airflow rate through the sensor element. Therefore not to be used in highly contaminated environments. Airflow rate limits are set at the factory.

Actuator  Notes Torque
Nm
Damper
size
Communication
interface
Order code
Halton
EM
Analogue actuator
Manufacturer:
Belimo
5 (200-300)x150 DC0..10V/
2..10V
EM =
LMV-D3-MF-F.1 HI (DC 0/2…10 V), 5 Nm
Halton
EK
Analogue actuator
Manufacturer:
Belimo
10 (300-800)x250 DC0..10V/
2..10V
EK =
NMV-D3-MF-F.1 HI (DC 0/2…10 V), 10 Nm
Halton
EC
Actuator with NFC
connectivity for mobile
onsite parameter adjustment
(Belimo Assistant App).
Analogue or MPbus.
Manufacturer: Belimo
5 (200-300)x150 Belimo MP bus
or 0..10V/2..10V
EC = LMV-D3-MP (MP bus), 5 Nm
Halton
EE
 Actuator with NFC
connectivity for mobile
onsite parameter adjustment
(Belimo Assistant App).
Analogue or MPbus.
Manufacturer: Belimo
10 (300-800)x250  Belimo MP bus
or 0..10V/2..10V
EE = NMV-D3-MP (MP bus), 10 Nm
Halton
EH
Analogue actuator
Manufacturer:
Siemens
5 (200-300)x150 DC0..10V/
2..10V
EH = GDB181.1E/3 (DC 0/2…10 V), 5 Nm
Halton
EG
Analogue actuator
Manufacturer:
Siemens
10 (300-800)x250  DC0..10V/
2..10V
 EG =
GLB181.1E/3 (DC 0/2…10V), 10 Nm
Halton
EV
Actuator with
KNX
Manufacturer:
Siemens
5 (200-300)x150 KNX
communication
 EV =
GDB181.1E/KN (KNX bus), 5 Nm
Halton
EW
Actuator with
KNX
Manufacturer:
Siemens
10 (300-800)x250 KNX
communication
 EW =
GLB181.1E/KN (KNX bus), 10 Nm
Halton
EB
Actuator with
Modbus RTU (RS-485)
Manufacturer:
Siemens
5 (200-300)x150 Modbus communication EB = GDB181.1E/MO (Modbus RTU), 5 Nm
Halton
EF
Actuator with
Modbus RTU (RS-485)
Manufacturer:
Siemens
10 (300-800)x250 Modbus communication EF = GLB181.1E/MO (Modbus RTU), 10 Nm
Halton
LK
Actuator with
LonWorks
Manufacturer:
Belimo
5 (200-300)x150 LonWorks communication LK = LMV-D3-LON (LonWorks), 5 Nm
Halton
LM
Actuator with
LonWorks
Manufacturer:
Belimo
10 (300-800)x250 LonWorks communication LM = NMV-D3-LON (LonWorks), 10 Nm
Halton
HM
Controller include actuator with
LonWorks
Manufacturer:
Distech
5 (200-300)x150 LonWorks communication HM = ECL-VAV-S, HAV (LonWorks), 5Nm
Halton
HK
Modulating actuator from Belimo:
Controller
LonWorks
Manufacturer:
Distech
10 (300-800)x250 LonWorks communication HK = ECL-VAV-N, HAV + NM24A-SR (LonWorks), 10 Nm

Dimensions and weight

MSB_dimensions

Size W H WT HT L Weight (kg)
200×150 200 150 255 205 1100 15.0
300×150 300 150 355 205 1100 21.0
300×250 300 250 355 305 1200 38.0
400×250 400 250 455 305 1200 40.0
600×250 600 250 655 305 1500 46.0
800×250 800 250 855 305 1500 57.0

Specification

The Halton Max Slim Box airflow management unit can be applied in both supply and exhaust Variable Air Volume applications. Its compact, low profile design permits installation into challenging spaces where access is limited or where room and false ceiling heights are restricted. The dynamic pressure measurement system allows an accurate measurement of the airflow without upstream safety distances.

The Halton Max Slim Box comprises:
• an airflow control damper blade
• an aluminium airflow differential pressure measurement probe installed centrally inside the plenum
• an integrated silencer

The pressure differential probe measures the average pressure across the whole surface, and from that accurately determines the actual volume of air passing through the unit. The position of the damper blade is then constantly calculated and adjusted by the actuator mounted on the spindle of the damper blade, in response to the measurements from the dynamic pressure sensor and electronic controller.

The selection of the VAV box is done according to the range of airflow it is designed to control based on performance data compiled from results of performance tests carried out in our Innovation Hubs and Laboratories. Each plenum is calibrated and the controls are pre-set at our factory to the minimum and maximum airflow conditions specified by the client. Factory pre-set parameters and project reference identification information are clearly marked on each unit. The acoustic properties of the Halton Max Slim Box are improved by the inclusion of a symmetrical attenuator containing Euroclass A2 s1 d0 high density mineral wool.

Minimum and maximum airflow values stated are indicative only and can differ by control type or brand, so please check with Halton prior to ordering.

Installation

The Dynamic Measuring System within the Halton Max Slim Box allows it to be installed directly after a T, elbow or reduction or even on to a main riser duct without affecting the accuracy of the air volume measurement.

Therefore, there is no requirement for safety distances.

Key
1.   Rivet nut M8

The Halton Max Slim Box is connected to the ductwork thank to the rivet nut M8 (1).

Wiring

The wiring must be carried out by professional technicians in accordance with local regulations. For the power supply, a safety-isolating transformer must be used.

MSB_wiring

Key
1     (G0) 24 VAC system neutral
2     (~) 24 VAC live
3     (Y) 2…10- or 0…10-VDC airflow setpoint signal input
5     (U) 2…10- or 0…10-VDC airflow feedback signal output

The wiring instructions are presented following applications

Example Actuator Application
1A CU=EM / EK / EC / EE Typical variable airflow control application
1B CU=EM / EK / EC / EE Overriding controls
1C CU=EM / EK / EC / EE Example; variable airflow control with a room controller
1D CU=EM / EK / EC / EE Example; variable airflow control with a building management system
1E CU=EM / EK / EC / EE Example: parallel airflow control with a building management system
3A CU=EG Typical variable airflow controll
3B CU=EG Position and constant airflow control

1A and 1B
CU = EM/EC (LMV-D3-MP/MF HI) or EK/EE (NMV-D3-MP/MF HI)
– typical application and overriding controls

1A Typical variable airflow control application 1B Overrides All options

Key
VAV     Halton Max Slim Box (MSB)
1          (G0)  24 VAC system neutral
2          (~) 24 VAC live
3          (Y) 2…10- or 0…10-VDC airflow setpoint signal input
5          (U) 2…10- or 0…10-VDC airflow feedback signal output
*)          Diode 1N 4007

Operating mode

2…10 VAC 0…10 VAC A B C D E
Closed qv_min ON
qv_min qv_min Off Off Off Off Off
Variable
qv_min…qv_max
Variable
qv_min…qv_max
Off ON Off Off Off
CLOSED CLOSED Off Off ON Off Off
qv_max qv_max Off Off Off ON Off
OPEN OPEN Off Off Off Off ON

Shut-off with control signal w:
In addition to relay override command situations, the damper will be fully closed if:

  • 0…10 VDC: the MSB minimum airflow is set to 0% (0 l/s or 0 m3/h) and control signal w falls below 0.45 VDC
  • 2…10 VDC : the MSB control signal w falls below 0.5 VDC
  • Both 0…10 VDC and 2…10 VDC: the airflow setpoint voltage falls below a value corresponding to an air velocity of less than 0.5 m/s
 Mode Voltage of
w, VDC
 Function
 0…10 VDC 0.0…0.45  Minimum airflow (closed if qv_min = 0%)
0.5…10.0  Modulating, qv_min … qv_max
10.0  Maximum airflow
 2…10 VDC 0.0…0.5  Damper closed
0.5…2.0  Minimum airflow
2.0…10.0  Modulating, qv_min…qv_max
10.0  Maximum airflow

1C and 1D
CU = EM/EC (LMV-D3-MP/MF HI) or EK/EE (NMV-D3-MP/MF HI)
– variable airflow control with a room controller or a building management system

1C Room controller application                    1D Building management system application

Key
VAV       Halton Max Slim Box (MSB)
1            (G0) 24 VAC system neutral
2             (~)  24 VAC live
3             (Y)  0…10-VDC airflow setpoint signal input
5             (U)  0…10-VDC airflow feedback signal output
RC           Room controller
PLC         Building management system
C (AO)    Airflow setpoint control signal
F (AI)      Actual airflow feedback input

1E
CU = EM/EC (LMV-D3-MP/MF HI) or EK/EE (NMV-D3-MP/MF HI)
– parallel airflow control with a building management system

1E  Parallel airflow control with building management system

Key
1             (G0) 24 VAC system neutral
2             (~) 24 VAC live
3             (Y) 0…10-VDC airflow setpoint signal input
5             (U) 0…10-VDC airflow feedback signal output
PLC         Building management system
C             (AO) Airflow setpoint control signal
F             (AI) Actual airflow feedback input

3A and 3B
CU=EG (GLB181.1E/3)
– typical variable airflow control and position and constant airflow control

3A Typical airflow control application      3B  Position and constant airflow control

Key
VAV       Halton Max Slim Box (MSB)
2            (G0) 24 VAC system neutral
1            (G) 24 VAC live
8            (YC) 2…10- or 0…10-VDC airflow setpoint signal input
9            (U) 2…10- or 0…10-VDC airflow feedback signal output
6            (Y1) Override input
7            (Y2) Override input

 Constant flow A B
 CLOSED Off ON
 Min. flow Off Off
 Max. flow ON ON
 OPEN ON Off

Commissioning

The actual airflow rate can be calculated as a function of differential pressure at the measurement probe and the measurement probe k factor. The proper k factor can be found in the documentation supplied with the product and in the table below (supply and exhaust).

Size k factor
(airflow in m3/h)
k factor
(airflow in l/s)
200 x 150 67 18.5
300 x 150 100 28.0
300 x 250 225 62.5
400 x 250 300 83.5
600 x 250 450 125.0
800 x 250 600 166.5

q            Actual airflow rate [l/s]
k               k factor value
Δpm          Differential pressure of measurement probe [Pa]

Order code

MSB-W-H, CU-SE-TF-ZT

M = Model
S    Supply
E    Exhaust      

W = Width of duct connection (mm)
200, 300, 400, 600, 800      

H = Height of duct connection (mm)
150, 250 

Other options and accessories

CU =  Control Unit
EM       LMV-D3-MF-F.1 HI (analogue), 5 Nm
EK        NMV-D3-MF-F.1 HI  (analogue), 10 Nm
EC        LMV-D3-MP-F. HI (MP bus), 5 Nm
EE        NMV-D3-MP-F. HI  (MP bus) 10 Nm
EH        GDB181.1E/3 (DC 0/2…10 V), 5 Nm
EG        GLB181.1E/3 (DC 0/2…10V), 10 Nm
EV        GDB181.1E/KN (KNX bus), 5 Nm
EW       GLB181.1E/KN (KNX bus), 10 Nm
EB        GDB181.1E/MO (Modbus RTU), 5 Nm
EF        GLB181.1E/MO (Modbus RTU), 10 Nm
LK        LMV-D3-LON (LonWorks), 5 Nm
LM        NMV-D3-LON (LonWorks), 10 Nm
HM       ECL-VAV-S, HAV (LonWorks), 5Nm
HK        ECL-VAV-N + NM24A-SR, HAV (LonWorks),10Nm

SE  = Sensors
NA        Not assigned
DS1      Duct sensor, TCO2, Duct CO2
P1         Differential pressure transmitter, HDP-PE

TF = Transfomer
NA      Not assigned
TF1     230/24 transformer (35VA)

ZT = Tailored product
N        No
Y        Yes (ETO)

Code example

MSB/S-200-150,CU=EM, SE=NA, TF=TF1, ZT=N

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