Boost function gives the possibility for fast control of room temperature.
L = 1000/1200/1400
L1 = 826/1026/1226
(BO = Y or BO = R)
30 kg (excluding water and fan)
(RAL 9003 or RAL 9010,
|Special colours available.
(RAL 9003 or RAL 9010,
|Special colours available.
|Supply-air plenum||Galvanised steel|
Cooling/heating-water pipe connections are Cu15/Cu12 with wall thickness of 0.9–1.0 mm, meeting European standard EN 1057:1996. The maximum operating pressure for chilled/hot-water pipework is 1.0 MPa. The supply-air duct connection diameter is 125 mm.
and heating coil
| TC =
|H = coil with additional
|Copper water pipe
connections are Ø 15 mm
Ø 10 mm (heating).
|Booster fan||BO =
|Boost fan can be installed
in factory or delivered later
|The retrofitting of boost fan is
possible only if BO=R selected,
when the beam is ordered.
|Control valve||CV =
|Valves with adjustable
(Danfoss RA-C, DN 15)
or with max. flow limit
(Danfoss AB-QM, DN 10
Danfoss AB‑QM DN 15
|Valve actuator||VM =
|Thermal on/off actuators
(230 VAC, NC or 24 VAC, NC)
for both valve types.
Also 230V 0-10V actuator
Cable length: 1.2 m
If controls chosen,
24V actuator not available.
The Halton CHB unit is an active chilled beam for bulkhead installation.
The primary supply air enters the plenum of the active chilled beam, from which it is diffused into the room through nozzles and a supply grille on the front of the chilled beam. The supply-air nozzle jets efficiently induce ambient room air through the return-air grille and the heat exchanger, where it is either cooled or heated. The combined air jet is directed along the ceiling surface.
Three nozzle sizes are available, to enable various supply-air flow rates.
The unit is available in three widths, to meet a wide range of appearance and capacity demands.
The units provide water-side cooling and heating capacity control
The chilled beam can be equipped in the factory with either a standard control valve or a combination control valve.
Controls may include either a standard control valve or a combination control valve. Both are operated with a thermal actuator, and the water-flow rate of the control valve is based on room air temperature. The standard control valve has an adjustable Kvs value. The combination control valve has an adjustable nominal water-flow rate, and there is a pressure difference measurement across the control valve in order to ensure that a great enough pressure differential (min.16 kPa) is available to match the adjusted water-flow rate and the automatic balancing in use.
The Halton CHB unit is suitable for bulkhead and suspended-ceiling installation. The chilled beam’s ceiling brackets can be fixed directly to the ceiling surface or suspended by means of threaded drop rods (8 mm). The recommended maximum distance of the supply air grille from the ceiling is 200 mm. The return-air grille has a 40-mm telescopic connection and the supply air grille a 200-mm telescopic connection.
Install the main pipelines of the cooling- and heating-water loops above the level of the chilled beams, to allow venting of the pipework.
Picture above: If controls or boost selected inspection door needed for maintenance/ installation
The recommended cooling-water mass flow rate is 0.02–0.10 kg/s, resulting in a temperature increase of 1–4 °C in the heat exchanger. For avoiding condensation, the recommended inlet-water temperature of the heat exchanger is 14–16 °C.
The recommended heating-water mass flow rate is 0.01–0.04 kg/s, resulting in a temperature decrease of 5–15 °C in the heat exchanger. The recommended temperature of the inlet water for the heat exchanger is 35–45 °C.
Balance the water-flow rates of the chilled beam with the standard control valve by selecting the desired Kvs value in the valve body. When using an automatically balancing combination valve, set the desired water-flow rate in the valve body, and verify the pressure difference (min.: 16 kPa) across the valve. Regulating the water mass flow rate controls the cooling and heating capacity of the chilled beam.
Each chilled beam is equipped with a measurement tap for static pressure measurement, which enables fast and accurate measurement of the rate of supply-air flow through the beam. The air-flow rate is calculated by means of the formula below.
Where k value is determined according table below:
|Nozzle||Width||k [l/s]||k [m3/h]|
1. Return air grille
2. Supply air grille
3. Supply air connection
4. Chilled water pipe connections
5. Heating water pipe connections
Open the return-air grille of the chilled beam. Clean the finned coils of the heat exchanger with a vacuum cleaner, taking care not to damage the finned coils. Clean the return- and supply-air grilles with a damp cloth.
Check at regular intervals that the actuators and water-flow control valves are working.
The Halton CHB unit is an active chilled beam for bulkhead and enclosed installation with return and supply air grilles. The Halton CHB has an option of a boost fan integrated into the unit.
The return- and supply-air grilles shall be openable and removable for maintenance. The return-air grille has a 40-mm telescopic connection and the supply-air grille a 200-mm telescopic connection
The inlet duct connection shall be changeable and able to be located at the right, left, or middle of the supply-air plenum. When there is an integrated fan, there is no option for a connection in the middle.
The heat exchanger of the beam shall be oriented such that the water connections may be on either the right or left side of the beam.
All pipes shall be manufactured from copper, connection pipes with a wall thickness of 0.9–1.0 mm. The fins of the heat exchanger shall be manufactured from aluminium. The heat exchanger shall be factory pressure-tested. The maximum operating pressure of pipework shall be 1.0 MPa.
Each active chilled beam shall be protected by a removable plastic coating and individually packed in a plastic bag. Duct connection and pipe ends shall be sealed during transit.
Each chilled beam shall be identifiable by a serial number printed on a label attached to the active chilled beam.
S = Nozzle type
A Nozzle 5
B Nozzle 6
C Nozzle 7
W = Total width of the unit
1000 1000 mm
1200 1200 mm
1400 1400 mm
E = Location of supply-air connection
M Middle (not possible with BO=Y or BO=R)
K = Location of pipe connections
CO = Colour of grilles
SW Signal white (RAL9003)
W Pure white (RAL 9010)
X Special colour (RALxxxx)
TC = Cooling/heating functions (coil type)
H Cooling and heating
BO = Booster fan
R Retrofit possibility
CV = Control valves
N Not assigned
A2 Adjustable Kvs (Danfoss RA-C, DN 15), loose
A4 Max. flow limit (Danfoss AB-QM),
DN 10 (heating) and DN 15 (cooling), deliverd loose
VM = Valve actuator
N Not assigned
A1 24V On-Off
A2 230V On-Off
A3 24V 0-10V Modulating
ZT = Tailored product
Y Yes (ETO)
CHB /A-1000-L-R, CO=SW, TC=H, BO=Y, CV=A2, VM=A2, ZT=N
Fig.1. 3D-image with room controller (CHB).
Fig.2. Hotel Best Western Premier Katajanokka, Helsinki, Finland
In picture CHH, witch has similar outlook as CHB