DID-E2
Active chilled beams for heating and cooling with 2- or 4-pipe heat exchangers for installation in ceiling bulkheads, e.g. in hotel rooms and hospital wards in the nominal lengths of 1000, 1125 and 1250 mm
Optional equipment and accessories
Application
Active chilled beams of Type DID-E2 for installation into ceiling bulkheads, preferably for room heights of up to 4.00 m
Load removal with water enables a reduction of the primary air flow rate to the required minimum fresh air flow rate
2-pipe or 4-pipe heat exchangers enable good comfort levels with a low conditioned primary air volume flow rate
Energy-efficient solution since water is used for heating and cooling
Special features
Horizontal heat exchanger as 2-pipe or 4-pipe system
The connection points are at the back of the unit, which is typically connected from the corridor
The supply air spigot is extendable to compensate for structural tolerances
Nominal sizes
Variants
Water connection
Heat exchanger
Nozzle variants
H2: nozzle mix (50 % S2 nozzle and 50 % HP nozzle)
Other nozzle mixes possible on request.
Attachments
Accessories
Z: Extension spigot for the supply air (if a supply air grille with concealed screw fixing is used, the extension spigot for supply air is essential)
ERS: Installation subframe for secondary air grille
Useful additions
LWS control equipment consisting of a control panel with integral room temperature sensor including controller, valves and valve actuators; and lockshields
Grille for supply air and secondary air from the TROX grill range
Control system X-AIRCONTROL for water-side and air-side control with the option of a connection to the central BMS
For further information on the X-AIRCONTROL and for information relevant to design, please refer to the installation and operating manual
Construction features
Spigot is suitable for circular ducts to EN 1506 or EN 13180
5 nozzle variants for needs-based, optimum induction
Side-mounted bracket for attachment with various mounting systems
Devices without flow rate control subassembly have a central primary air connection, devices with a flow rate subassembly have a primary air connection on the left or right
Materials and surfaces
Casing, nozzle plate, supply air spigot and installation subframe for secondary air grille made of galvanised sheet steel
Heat exchanger with copper tubes and aluminium fins
Surface of the casing and heat exchanger optionally available in black (RAL 9005)
Standards and guidelines
Products are certified by Eurovent (no. 09.12.432) and listed on the Eurovent website
Sound power level of the air-regenerated noise measured according to EN ISO 5135
Maintenance
Variants without flow rate control subassembly (VC) are low-maintenance, as there are no moving parts. The flow rate control subassembly can be accessed via a separate casing cover for maintenance purposes
The heat exchanger can be vacuumed with an industrial vacuum cleaner if necessary
VDI 6022, Part 1, applies (hygiene requirements for ventilation and air conditioning systems)
② Equipment casing
③ Fixing bracket
④ Supply opening
⑤ Water connection (tube diameter 12 mm)
⑥ Heat exchanger
Functional description
Active chilled beams provide centrally conditioned primary air (fresh air) to the room and use heat exchangers for additional cooling and/or heating.
The primary air is discharged through nozzles into the mixing chamber; as a result of this, secondary air (room air) is induced via the induced air grille and passes through the horizontal heat exchanger.
Primary and secondary airflows mix and are then supplied to the room horizontally through the supply air grille.
Nominal length | 1000, 1125, 1250 mm |
Length | 1000, 1125, 1250 mm |
Width | 519, 616, 711, 808 mm |
Height | 207, 212 mm |
Primary air spigot, diameter | 123, 158 mm |
Primary air volume flow rate | 8 – 57 l/s or 29 – 205 m³/h |
Cooling capacity | Up to 1600 W |
Heating capacity | Up to 1000 W |
Max. operating pressure, water side | 10 bar (in combination with connection hoses 6 bar) |
Max. operating temperature | 75 °C (in combination with connection hoses 55 °C) |
The quick sizing table contains operating points for defined reference units, whereby the data for devices without flow rate control subassemblies apply. For other operating points, you may use the Easy Product Finder design programme.
Reference values
| Cooling | Heating | |
tR | 26 °C | 22 °C |
tPr | 16 °C | 22 °C |
tWV | 16 °C | 50 °C |
VW | 110 l/h | 110 l/h |
Active chilled beams of Type DID-E2, with oneway air discharge are a low-noise alternative to fan coil units, providing high thermal output and high thermal comfort levels.
For installation into ceiling bulkheads, preferably in rooms with a height up to 4.00 m.
The units consist of a casing with suspension points, a spigot, non-combustible nozzles, and a horizontal heat exchanger.
Five nozzle variants to optimise induction based on demand.
Special features
Horizontal heat exchanger as 2-pipe or 4-pipe system
The connection points are at the back of the unit, which is typically connected from the corridor
The supply air spigot is extendable to compensate for structural tolerances
Materials and surfaces
Casing, nozzle plate, supply air spigot and installation subframe for secondary air grille made of galvanised sheet steel
Heat exchanger with copper tubes and aluminium fins
Surface of the casing and heat exchanger optionally available in black (RAL 9005)
Technical data
Primary air volume flow rate: 8 – 57 l/s or 29 – 205 m³/h
Maximum operating pressure, water side: 10 bar (in combination with connection hoses 6 bar)
Maximum operating temperature: 75 °C (in combination with connection hoses 55 °C)
Sizing data
Primary air
Air-regenerated noise
Cooling
Heating
This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.
 TypeDID-E2 Active chilled beam  Heat exchanger2 2-pipe 4 4-pipe  Nozzle variantsHE Small S2 Large (50 % S2 nozzle and 50 % HP nozzle)  Position of water connectionsR Right L Left  Water connectionsNo entry required: pipe with plain tails A2 Wit union nut G½" and flat seal |  Nominal length × heat exchanger depth × Volume flow controlNo entry required: without VC With flow rate control subassembly  Supply air spigotNo entry required: without Z Wit extension spigot for supply air  Installation subframe for secondary air grilleNo entry required: without ERS Installation subframe for secondary air  Surface of casing and heat exchanger |
DID-E2-2-S1-R/1000x320x123
Heat exchanger | 2-pipe |
Nozzle variant | Medium |
Arrangement of water connections | Right side |
Nominal length x heat exchanger depth x primary air spigot | 1000 × 320× 123 |
DID-E2-4-H2-L-A2/1250x512x158/VC/Z/ERS/G1
Heat exchanger | 4-pipe |
Nozzle variant | Nozzle mix (50 % S2 nozzle and 50 % HP nozzle) |
Arrangement of water connections | Left side |
Water connection | With union nut G½” and flat seal |
Nominal length x heat exchanger depth x primary air spigot | 1250 x 512 x 158 |
Volume flow control | With flow rate control subassembly |
Supply air spigot | With extension spigot for supply air |
Installation subframe for secondary air grille | Installation subframe for secondary air grille, including safety cables for the grille |
| Surface of casing and heat exchanger | Surface of RAL 9005, jet black |
KV-0,63/HV-0,4/R
Cooling valve | Cooling valve including actuator |
kVS value – cooling valve | 0,63 |
Heating valve | Heating valve including actuator |
kVS value – heating valve | 0,4 |
| Lockshield(s) | With |
SL/925x525/VS
Secondary air grille | SL |
Dimensions | 925x525 |
Fixing | With concealed screw fixing |
Surface of secondary air grille | RAL 9010 |
SL/925x125/VS/P1-RAL 9016
Supply air grille | SL |
Dimensions | 925x125 |
Fixing | VS: With concealed screw fixing |
Surface of supply air | RAL 9016 |
Dimensions [mm]
| K | ||
1000 | 1000 | 940 |
1125 | 1125 | 1065 |
1250 | 1250 | 1190 |
Dimensions [mm]
| BWÜ | |
519 | 320 |
711 | 512 |
Dimensions [mm]
| ØD |
123 |
158 |
Weight (4L, 123, R+L) [kg]
| Nominal length | 1000 x 512 | 1125 x 320 | 1125 x 512 | 1250 x 320 | 1250 x 512 | |
DID-E2 | 15,5 | 20,5 | 17,0 | 23,0 | 19,0 | 25,0 |
Supply air spigot Z | 1,7 | 1,7 | 1,9 | 1,9 | 2,1 | 2,1 |
Installation subframe ERS | 1,4 | 1,5 | 1,6 | 1,7 | 1,8 | 1,9 |
Contained water WÜ | 1,5 | 2,5 | 1,8 | 3,0 | 2,1 | 3,5 |
Dimensions [mm]
| BWÜ | |
616 | 320 |
808 | 512 |
Weight (4L, 123, R+L) [kg]
| Nominal length | 1000 x 512 | 1125 x 320 | 1125 x 512 | 1250 x 320 | 1250 x 512 | |
DID-E2-*-VC | 21,5 | 26,5 | 24,0 | 29,5 | 26,0 | 32,0 |
Supply air spigot Z | 1,7 | 1,7 | 1,9 | 1,9 | 2,1 | 2,1 |
Installation subframe ERS | 1,4 | 1,5 | 1,6 | 1,7 | 1,8 | 1,9 |
Contained water WÜ | 1,5 | 2,5 | 1,8 | 3,0 | 2,1 | 3,5 |
Installation and commissioning
Preferably for rooms with a clear height up to 4.00 m
Lengths to fit basic dimensions 1000, 1125 and 1250 mm
Installation and connections to be performed by others; fixing, connection and sealing material to be provided by others
Active chilled beam has 4 suspension points (slotted hole 38 x 8.5 mm) for on-site installation by others
Heat exchangers are fitted with water flow and water return connections at the rear, usually towards the corridor
With the optionally available supply air spigot, which works like a sliding spigot, installation areas of 38 – 78 mm are bridged
Secondary air can be suctioned through a grille from the TROX grille range, the perforated metal plate especially developed for the DIDE2 or through an opening or shadow gap provided by others
Secondary air grills must be secured with safety cables The optionally available installation subframe for secondary air grilles has safety cables that can be mounted on the grille
Nomenclature
LWA [dB(A)]
Sound power level
tPr [°C]
Primary air temperature
tWV [C°]
Water flow temperature – cooling/heating
tR [C°]
Room temperature
tAN [C°]
Secondary air intake temperature
QPr [W]
Thermal output – primary air
Qges [W]
Thermal output – total
QW [W]
Thermal output – water side, cooling/heating
VPr [l/s/m³/h]
Primary air volume flow rate
VW [l/h]
Water flow rate – cooling/heating
V [l/h]
Volume flow rate
∆tW [K]
Temperature difference – water
∆pW [kPa]
Water side pressure drop
∆pt [Pa]
Total pressure drop, air side
∆tPr = tPr - tR [K]
Difference between primary air temperature and room temperature
∆tRWV = tWV - tR [K]
Difference between water flow temperature and room temperature
∆tWm-Ref [K]
Difference between mean water temperature and reference temperature
Principal dimensions
LN [mm]
Nominal length
Mixed flow
The supply air is discharged from the air terminal device into the space with a velocity between 2 and 5 m/s. The resulting air jet mixes with the room air, ventilating the entire space. The mixed flow air distribution typically provides a uniform temperature distribution and air quality within the space. The originally high velocity of the turbulent air jets decreases rapidly due to the high induction levels of mixed flow air distribution systems.
Heat exchanger
The maximum water-side operating pressure for all heat exchangers is 10 bar. When flexible hoses are used, the maximum water-side operating pressure is limited to 6 bar.
The maximum water flow temperature (heating circuit) for all heat exchangers is 75 °C; if flexible hoses are used, the water flow temperature should not exceed 55 °C. Units for other pressures and temperatures are available on request.
The water flow temperature (cooling circuit) should be at least 16 °C such that it does not permanently fall below the dew point. For units with a condensate drip tray, the water flow temperature may be reduced to 15 °C.
Heat exchanger as 2-pipe system
Air-water systems with a 2-pipe heat exchanger may be used for either heating or cooling. In changeover mode, it is possible to use all units within a water circuit exclusively for cooling in summer and exclusively for heating in winter.
Heat exchanger as 4-pipe system
Air-water systems with a 4-pipe heat exchanger may be used for both heating and cooling. Depending on the season, i.e. especially in spring and autumn, it may be possible that an office has to be heated in the morning and cooled in the afternoon.
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Contact
We are here for you
Please specify your message and type of request
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265
Contact
Thank you for your message!
Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265
