• Control damper for different airflow and duct pressure control applications
• Pressure-independent operation
• Galvanized steel design
• Circular duct connection equipped with integrated rubber gaskets
• Minimum airflow is related to 1 m/s on specific product models

Product Models and Accessories

• Model with shut-off operation; tightness fulfills EN 1751, class 4 requirements (HFB/G and HFB/I)
• Casing tightness fulfills EN 1751, class C requirements
• Model with external insulation
• Several sound attenuator models
• Several airflow controller options
• 1 m/s - minimum airflow - the HFB/G and HFB/I with one of following controller options of EM, EK, EC, EE
• 2 m/s - minimum airflow - any HFB models with controller option of EM, EK, EC, EE, ED, EG
• Electric reheat coil options
• Factory-set airflow range limits (min./max. airflow rates) as an option

The pressure-independent variable airflow control damper is made of galvanised steel, with an airflow measurement probe of aluminium.

The tightness of the control damper in closed position conforms to standard EN1751 class 4 and casing tightness to EN 1751/C.
Duct connection includes integral airtight rubber gaskets.

The management damper section contains airflow measurement, flow controller and damper actuator.

Design airflow range limits are calibrated at the factory.
Controller settings canbe adjustable on site with a PC or a handheld tool.
The airflow controller has control signal input 0...10 VDC or 2 ...10 VDC and output 0...10 VDC for airflow feedback.
Supply power is 24 VAC.

The damper is equipped with a sound attenuator in order to meet the sound level requirement for the room. As an optional extra, the sound attenuator has an access panel for cleaning purposes.

The airflow controller comprises an electric reheat coil with power supply of 230 VAC. Incorporated within the reheat coil has a safety overheat thermostat with both automatic and manual reset. A 3rd party room controller is needed to control the duct heater with 0...10 VDC control signal.

• Dimensions
• Material
• Function
• Product Models
• Sound Attenuators
• Electric Reheat Coils
• Installation
• Commissioning
• Specification
• Order code

Halton HFB

Airflow management damper

• Control damper for different airflow and duct pressure control applications.
• Pressure-independent operation.
• Galvanised steel design.
• Circular duct connection equipped with integrated rubber gaskets.
• Minimum airflow is related to 1 m/s on specific product models.

Product Models and Accessories

• Model with shut-off operation; tightness fulfils EN 1751, class 4 requirements (HFB/G and HFB/I) .
• Casing tightness fulfils EN 1751, class C requirements.
• Model with external insulation.
• Several sound attenuator models.
• Several airflow controller options.
• 1 m/s - minimum airflow - the HFB/G and HFB/I with one of following controller options of EM, EK, EC, EE.
• 2 m/s - minimum airflow - any HFB models with controller option of EM, EK, EC, EE, ED, EG.
• Electric reheat coil options.
• Factory-set airflow range limits (min./max. airflow rates) as an option.

Dimensions ▲

Halton HFB/G, HFB/H

Halton HFB/I, HFB/J

Material ▲

Duct connection gaskets are vulcanised to the casing.

Function ▲

The variable airflow damper Halton HFB contains an averaging airflow measurement probe, airflow controller and actuator. Airflow is controlled based on actual flow measurement by changing the damper blade position. The airflow setpoint can be modified between minimum and maximum settings by, e.g., a room controller with an analogue signal (0...10 or 2...10 VDC). Flow control damper Halton HFB maintains the required airflow independent of duct pressure variation.

The static pressure control damper option maintains the desired constant duct pressure based on a static pressure measurement.

Product Models ▲

The Halton HFB airflow control damper is available in several versions.
The blade gasket enables airtight shut-off operation, and external insulation is used to attenuate radiated sound into the space.

Minimum torque for different Halton HFB models:

Control units (CU)

The Halton HFB airflow control damper can be equipped with several different control units for either airflow or duct pressure control.
 

Airflow control

• For supply and exhaust installations. 
• Complete shut-off function (HFB/G and HFB/I). 
• Maximum differential pressure over the damper of 1000 Pa. 
• Operating range: ambient temperature of 0 to 50 ºC. 
• Ambient relative humidity < 95%, non-condensing.
   

Airflow controller options:
             EM     Halton LMV-D3-MF-F.1 HI (5 Nm - for sizes 100...250)
             EK     Halton NMV-D3-MF-F.1 HI (10 Nm)
             EC     Halton LMV-D3-MP-F.1 HI (5 Nm - for sizes 100...250)
             EE     Halton NMV-D3-MP-F.1 HI (10 Nm)
             ED     Belimo VRD3 + NM24A-V (10 Nm)
             EG     Siemens GLB181.1E/3 (10 Nm)

Controller ED includes two potentiometers for minimum and maximum airflow setpoint adjustment (ranges: minimum = 0…80% and maximum = 30…100%).

The adjustable airflow control range is presented in the table below. For airflow controllers EM, EK, EC, EE and EG, the highest available minimum airflow rate equals the specified maximum airflow rate.
Minimum and maximum airflow rates are calculated as percentage of damper's nominal airflow.

For the ED controller, the highest minimum airflow rate is 80% of the specified maximum airflow rate.
Maximum airflow is calculated as percentage of nominal airflow and minimum airflow as percentage of maximum airflow.

Remarks regarding table above :

Minimum airflows

For EM, EK, EC, EE with HFB/G and HFB/I, the minimum airflows are given for 1m/s
For EM, EC with HFB/H and HFB/J, the minimum airflows are given for 2 m/s
For ED, EG with all HFB types, the minimum airflows are given for 2 m/s

Maximum airflows

Maximum airflows are given for 9 m/s
For offices applications, maximum airflows adviced as general selection are given for 6m/s
Maximum airflows possible (sensor range limit) are given for 12 m/s
 

Pressure control for supply and exhaust installations

• Complete shut-off function (HFB/G and HFB/I). 
• Static pressure setpoint range of 30...100 Pa or 90...300 Pa. 
• Maximum differential pressure over the damper of 500 Pa. 
• Operating range: ambient temperature of 0 to 50 ºC. 
• Ambient relative humidity < 95%, non-condensing
   

Sound Attenuators ▲

Sound attenuators are available with optional outlet diameters with mineral wool (MW) or polyester fibre (PEF) insulation materials and with 600 mm and 1000 mm lenghts. Optionally the attenuator can be equipped with an access panel for cleaning and inspection purposes.

H1...H8   Attenuator without access panel
H11...H18  Attenuator with access panel

The connection (D1) is female type for direct connection to the Halton HFB airflow control damper. The duct connection (D2) is male type and either damper size or one size larger. Technical information is based on bigger of the duct connections (D2).

Attenuator dimensions

The picture above describes supply air installation. In exhaust installation the airflow direction is vice versa, from D2 to D1.

Attenuation data

Material:  Mineral wool (MW), frequency band (Hz) 

Material: Polyester fibre (PEF), frequency band (Hz) 

Electric Reheat Coils ▲

The Halton HFB electric reheat coil is available for duct sizes 100...400 mm, and it is always a single-phase heater (230 VAC, less than 16 A).

Two electric reheater options are available:

• RM = Electric reheater without internal heating controller, PWM control signal input (230 VAC, pulse width modulation) 
• RC = Electric reheater with internal heating controller, 0...10-VAC control signal input
   

Both heaters (RM and RC) have two internal overheating protection devices connected in series, one automatic and one with manual reset. This increases heater safety.

The RC heater also includes a built-in alarm relay with potential-free changeover contact for remote alarm monitoring. The alarm is triggered by manual overheating protection or heater power loss.

Ensure that the airflow velocity is above 2 m/s to guarantee proper control function when selecting the airflow control damper and reheat coil.

Electric duct heater operation shall always be interlocked with the fan or with airflow rate measurement through the heater. The power supply to the duct heater must be switched off if the fan is switched off or airflow rate is too low. This function can be connected to the duct heater power supply (switch I for both heaters RM and RC), or in the case of the RC heater, also with potential-free contact P.
 

Dimensions

Heating capacity

Electrical information

Code description
Halton           Delivered by Halton
3rd party       Delivered by a third party
S                  All-pole switch for power supply
I                   Fan interlock switch
P                  Airflow or duct pressure interlock switch
H                  Heating power controller
L1                 230 VAC live
N                  Neutral
0                   Protective earthing
 

Installation ▲

Safety distances

The Halton HFB airflow control damper is installed taking into account the required safety distances. Install the unit into ductwork in such a way that the air flow direction through the unit is as indicated with the arrow in the unit casing.

For the pressure control damper the minimum safety distance for the static measurement tab after the control damper is 5 x D. Please refer to job drawings.
 

Wiring

The wiring shall be carried out in accordance with local regulations and by professional technicians.

For the power supply of all control options, a safety-isolating transformer shall be used.

The wiring instructions are presented following applications:

1 A   HFB; CU=EM / EK / EC / EE   Typical variable airflow control application
1 B   HFB; CU=EM / EK / EC / EE   Overriding controls
1 C   HFB; CU=EM / EK / EC / EE  Example;
                                                     Variable airflow control with a room controller
1 D   HFB; CU=EM / EK / EC / EE  Example;
                                                     Variable airflow control with a building management system
1 E   HFB; CU=EM / EK / EC / EE  Example:
                                                     Parallel airflow control with a building management system

2 A   HFB; CU=ED    Typical variable airflow control application
2 B   HFB; CU=ED    Overriding controls
2 C   HFB, CU=ED    Constant airflow control

3 A   HFB; CU=EG     Typical variable airflow controll
3 B   HFB; CU=EG     Position & constant airflow control

4 A  HFB; CU=EM / EK / EC / EE, RH=RM   Cooling with airflow and heating with electric heater,
                                                                  pulse width modulation (PWM)
4 B   HFB; CU=EM / EK / EC / EE, RH=RC  Cooling with airflow and heating with electric heater

Control units

CU          Description                                               Note
EM          Halton LMV-D3-MF-F.1 HI                           (5 Nm)
EK          Halton NMV-D3-MF-F.1 HI                           (10 Nm)
EC          Halton LMV-D3-MP-F.1 HI                           (5 Nm, with Belimo MP-bus)
EE          Halton NMV-D3-MP-F.1 HI                          (10 Nm, with Belimo MP-bus)
ED          Belimo VRD3 + NM24A-V                           (10 Nm)
EG          Siemens GLB181.1E/3                               (10 Nm)
ES          Belimo VRP-STP + VFP-100 + NM24A-V     (10 Nm, 30...100 Pa)
ER           Belimo VRP-STP + VFP-300 + NM24A-V    (10 Nm, 90...300 Pa)

1A & 1B:  HFB; 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

Code description
Halton           Delivered by Halton
3rd party       Delivered by a third party
ACD              HFB
1                   (G0) 24 VAC system neutral
2                   (~)    24 VAC live
3                   (w)   2...10- or 0...10-VDC airflow setpoint signal input
5                   (U5)  2...10- or 0...10-VDC airflow feedback signal output
*)                  Diode 1N 4007

Operating mode

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

• 0...10 VDC: the HFB 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 : HFB 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

1C & 1D, example:
HFB; CU = EM / EC (LMV-D2-MP/MF HI) or EK / EE (NMV-D2-MP/MF HI)
- variable airflow control with a room controller or a building management system

1C.  Room controller application                1D.  Building management system application

Code description
Halton          Delivered by Halton
3rd party       Delivered by a third party
ACD             HFB
1 (G0)          24 VAC system neutral
2 (~)            24 VAC live
3 (w)            0...10-VDC airflow setpoint signal input
5 (U5)          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, example:
HFB; CU = EM / EC (LMV-D2-MP/MF HI) or EK / EE (NMV-D2-MP/MF HI)
- parallel airflow control with a building management system

1D. Parallel airflow control with building management system

Code description
Halton          Delivered by Halton
3rd party      Delivered by a third party
ACD1           HFB supply
ACD2           exhaust
1 (G0)          24 VAC system neutral
2 (~)             24 VAC live
3 (w)             0...10-VDC airflow setpoint signal input
5 (U5)           0...10-VDC airflow feedback signal output
PLC              Building management system
C (AO)          Airflow setpoint control signal
F (AI)            Actual airflow feedback input

2A, 2B & 2C:
HFB; CU=ED (VRD3 + NM24A-V)
- typical, overriding controls and constant airflow control

2A. Typical application          2B. Overriding controls            2C. Constant airflow control

Code description
Halton          Delivered by Halton
3rd party       Delivered by a third party
ACD             HFB
1 (G0)           24 VAC system neutral
2 (~)             24 VAC live
3 (w)             2...10- or 0...10-VDC airflow setpoint signal input
5 (U5)           2...10- or 0...10-VDC airflow feedback signal output
6 y               Actuator signal
7 z               Override input
*)                  Diode 1N 4007
 

3A & 3B:  HFB; CU=EG (GLB181.1E/3)
               - typical variable airflow control and position & constant airflow control

3A. Typical airflow control application            3B. Position & constant airflow control

Code description
Halton          Delivered by Halton
3rd party      Delivered by a third party
ACD            HFB
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

4A:  HFB; CU=EM, EK, EC or EE, RH=RM
        - cooling with airflow and heating with electric heater

4A. Cooling with airflow and heating with electric heater

Code description
Halton          Delivered by Halton
3rd party       Delivered by a third party
RH               RM electric reheater
1 (G0)           24 VAC system neutral
2 (~)             24 VAC live
3 (w)             2...10- or 0...10-VDC airflow setpoint signal input
5 (U5)           2...10- or 0...10-VDC airflow feedback signal output
RC               Room controller
C                 Airflow setpoint control signal for cooling
F                 Actual airflow feedback input
S                 All-pole switch for power supply
I                   Fan interlock switch
H                  Heating power output, 230 VAC PWM,
                    60-second cycle time recommended
L1                230 VAC live
N                 Neutral
0                  Protective earthing

4B:    HFB; CU=EM, EK, EC or EE, RH=RC
         - cooling with airflow and heating with electric heater

4B.  Cooling with airflow and heating with electric heater

Code description
Halton          Delivered by Halton
3rd party       Delivered by a third party
RH               RC electric reheater
1 (G0)          24 VAC system neutral
2 (~)            24 VAC live
3 (w)            2...10- or 0...10-VDC airflow setpoint signal input
5 (U5)          2...10- or 0...10-VDC airflow feedback signal output
RC               Room controller
C                 Airflow setpoint control signal for cooling
F                 Actual airflow feedback input
S                 All-pole switch for power supply
I                  Fan interlock switch
H                 Heating power output, 0...10 VDC
P                 Airflow or duct pressure interlock switch
L1                230 VAC live
N                 Neutral
0                  Protective earthing
9                  24 VAC system neutral
10                Heating power input, 0...10 VAC
11,12            Alarm output (NC), potential-free, contact closed in alarm
13,14            Alarm output (NO), potential-free, contact open in alarm
21,22            Airflow or duct pressure interlock indication

5A & 5B:   HFB; CU=ES or CU=ER
                 - Typical duct pressure control and overriding controls

5A. Typical duct pressure control                 5C. Overriding controls

Code description
Halton           Delivered by Halton
3rd party        Delivered by a third party
ACD              HFB
1                    (G0)  24 VAC system neutral
2                    (~)  24 VAC live
3                    (w1)  0...10 VDC pressure setpoint signal input
5                    (U5)  2...10 VDC pressure feedback signal output
6                     y  Actuator signal
7                     z  Override input
*)                    Diode 1N 4007
**)                   Jumper 2-4 factory-fitted for potentiometer setpoint; remove if 0...10-VDC input w1 is used
**)                   Minimum safety distance for pressure tab after pressure control damper: 5 x D
 

The pressure controller has a setpoint potentiometer for pressure setpoint adjustment.

Commissioning ▲

Airflow control

Nominal airflow rates of the Halton HFB are presented in the table below:

The actual measured airflow rate (qv) can be defined by the controller feedback signal (U or U5) and airflow controller nominal airflow (qv_nom).

The actual airflow rate can also be determined from the pictures below:

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 an attachment for the product.

qv           Actual airflow rate [l/s]
k             k value of the product
Δp_m        Differential pressure of measurement probe [Pa]

The Halton  HFB airflow controller is equipped with a pressure sensor, and there is a very low airflow through the differential pressure sensor of the controller. Therefore, a manual differential measurement manometer can be connected in parallel to the airflow controller (for example with tube T-branches) and both measurements can operate in parallel with continuous control.

If Halton  HFB is ordered without factory pre-set minimum and maximum flow values (FS=NA), minimum flow value will be set to 0 and maximum flow value is equal to nominal flow value.
 

Duct pressure control

The actual measured airflow rate can be defined by the controller feedback signal and airflow controller nominal airflow.
 

The actual duct static pressure can also be read from the picture:

Specification ▲

The pressure-independent variable airflow control damper is made of galvanised steel, with an airflow measurement probe of aluminium.

The tightness of the control damper in closed position conforms to standard EN1751 class 4 and casing tightness to EN 1751/C.
Duct connection includes integral airtight rubber gaskets.

The management damper section contains airflow measurement, flow controller and damper actuator.

Design airflow range limits are calibrated at the factory.
Controller settings canbe adjustable on site with a PC or a handheld tool.
The airflow controller has control signal input 0...10 VDC or 2 ...10 VDC and output 0...10 VDC for airflow feedback.
Supply power is 24 VAC.

The damper is equipped with a sound attenuator in order to meet the sound level requirement for the room. As an optional extra, the sound attenuator has an access panel for cleaning purposes.

The airflow controller comprises an electric reheat coil with power supply of 230 VAC. Incorporated within the reheat coil has a safety overheat thermostat with both automatic and manual reset. A 3rd party room controller is needed to control the duct heater with 0...10 VDC control signal.

Order code ▲

HFB/S-D

S = Model
      G      Damper with blade gasket
      H      Damper without blade gasket
       I       Blade gasket, insulation 50 mm
      J       No blade gasket, insulation 50 mm

D = Connection size
      100, 125, 160, 200, 250, 315, 400, 500
 

Other optios and accessories

MA  = Material
           CS     Steel

CU  = Control unit
           EM         LMV-D3-MF HI
           EK         NMV-D3-MF HI
           EC         LMV-D3-MP HI (includes Belimo MP-bus)
           EE         NMV-D3-MP HI (includes Belimo MP-bus)
           ED         VRD3+NM24A-V (Belimo)
           EG         GLB181.1E/3 (Siemens)

FS   = Min-max flow values presetting in factory
           NA         Not assigned
           Y           Yes

SA  = Sound attenuator, connection sizes
          NA       Not assigned
          H1       L = 600 mm; Outlet = inlet; Mineral wool
          H2       L = 1000 mm; Outlet = inlet; Mineral wool
          H3       L = 600 mm; Outlet = inlet; Polyester fibre
          H4       L = 1000 mm; Outlet = inlet; Polyester fibre
          H5       L = 600 mm; Outlet > Inlet; Mineral wool
          H6       L = 1000 mm; Outlet > inlet; Mineral wool
          H7       L = 600 mm; Outlet > inlet; Polyester fibre
          H8       L = 1000 mm; Outlet > inlet; Polyester fibre
          H11     L = 600 mm; Outlet = inlet; Mineral wool; Access panel
          H12     L = 1000 mm; Outlet = inlet; Mineral wool; Access panel
          H13     L = 600 mm; Outlet = inlet; Polyester fibre; Access panel
          H14     L = 1000 mm; Outlet = inlet; Polyester fibre; Access panel
          H15     L = 600 mm; Outlet > Inlet; Mineral wool; Access panel
          H16     L = 1000 mm; Outlet > inlet; Mineral wool; Access panel
          H17     L = 600 mm; Outlet > inlet; Polyester fibre; Access panel
          H18     L = 1000 mm; Outlet > inlet; Polyester fibre; Access panel

RH = Electric reheat coil
          NA       Not assigned
          RM      Electric reheater with PWM control signal input (230 VAC, pulse width modulation)
          RC      Electric reheater with 0...10-VAC control signal input

ZT  = Tailored product
          N       No
          Y       Yes

Code example

          HFB/G-100, MA=CS, CU=EE, FS=NA, SA=NA, RH=NA