Type DID-R

Active chilled diffuser with radial air discharge, 600 or 625 mm nominal width, vertical heat exchanger and condensate drip tray

Active chilled beam for heating and cooling, with 2-pipe or 4-pipe heat exchanger, for integration with various ceiling systems. The condensate drip tray is useful if the temperature temporarily falls below the dew point.

  • Preferably for room heights up to 4.00 m
  • High heating and cooling capacity with a low conditioned primary air volume flow rate and low sound power level
  • High comfort levels due to low airflow velocity in the occupied zone
  • Three nozzle variants to optimise induction based on demand
  • Circular or square diffuser face


Optional equipment and accessories

  • Control system
  • Casing coated black
  • Heat exchanger powder-coated black
  • Powder coating in many different colours, e.g. RAL CLASSIC

DID-R 00257982_0


  • Application
  • Description

Application

  • Active chilled diffusers of Type DID-R for the integration into various ceiling systems, preferably for room heights up to 4.00 m
  • Particularly suitable for continuous ceilings and for grid ceilings with grid size 600 or 625
  • Active chilled diffuser with radial air discharge
  • 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 characteristics

  • Radial air discharge
  • Vertical heat exchanger as 2-pipe or 4-pipe system, with condensate drip tray that is useful if the temperature temporarily falls below the dew point
  • Water connections at the side, Ø10 mm Cu pipe with plain tails

Nominal sizes

  • 600, 625 mm

Variants

  • DID-R: Circular construction, Ø598 mm
  • DID-R-Q: With square diffuser face (593, 618, 598, or 623 mm)


Heat exchanger

  • 2: 2-pipe systems
  • 4: 4-pipe systems


Plastic nozzle variants

  • A: Small
  • B: Medium
  • C: Large

Construction

  • Powder-coated RAL 9010, pure white, gloss level 50 %
  • P1: Powder-coated in any other RAL colour, gloss level 70 %
  • P1: Powder-coated RAL 9006, white aluminium, gloss level 30 %

Useful additions

  • Connecting hoses
  • Control equipment consisting of a control panel including a controller with integral room temperature sensor; valves and valve actuators; and lockshields
  • X-AIRCONTROL control system

Construction features

  • Spigot is suitable for circular ducts to EN 1506 or EN 13180
  • 3 suspension points for on-site installation (by others)
  • Three nozzle variants to optimise induction based on demand
  • Plastic nozzles
  • Removable induced air grille, fixed with a central fixing screw, secured with safety cables
  • Water connections at the side, Ø10 mm Cu pipe with plain tails

Materials and surfaces

  • Casing made of galvanised sheet steel
  • Diffuser face made of aluminium
  • Heat exchanger with copper tubes and aluminium fins
  • Exposed surfaces are powder-coated pure white (RAL 9010) or in any other RAL colour
  • Heat exchanger also in black (RAL 9005)
  • Casing powder-coated black (RAL 9005) as an option

Standards and guidelines

  • Products are certified by Eurovent (no. 09.12.432) and listed on the Eurovent website
  • Declaration of hygiene conformity to VDI 6022

Maintenance

  • No moving parts, hence low maintenance
  • 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 and units)

Technical information

Function, Technical data, Quick sizing, Specification text, Order code, Related products

  • Function
  • Technical data
  • Quick sizing
  • Specification text
  • Order code

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 is induced.

Secondary air (room air) is induced via the induced air grille and passes through the vertical heat exchanger, where it is heated or cooled.

Primary and secondary air mix and are then supplied to the room through the supply air slots horizontally and radially.

Nominal size

600, 625 mm

Circular diffuser face

Ø598 mm

Square diffuser face

593, 598, 618, 623 mm

Height

250 mm

Primary air spigot, diameter

98 mm

Primary air volume flow rate

12 – 25 l/s or 43 – 90 m³/h

Cooling capacity

Up to 550 W

Heating capacity

Up to 500 W

Max. operating pressure, water side

6 bar

Max. operating temperature

75 °C


The quick sizing table contains operating points for defined reference units. For other operating points you may use the Easy Product Finder design software.

Quick sizing

LN Primary air Cooling Heating
LN VPr Δpt LWA 2-pipe and 4-pipe systems 4-pipe system
LN VPr Δpt LWA Qtot QWK ΔtW ΔpW QWH = Qtot ΔtW ΔpW
LN l/s m³/h Pa dB(A) W K kPa W K kPa

600

A

6

22

37

24

253

181

1.9

1.9

339

5.8

0.4

600

A

10

36

103

33

344

223

2.4

1.9

384

6.6

0.4

600

A

13

47

174

39

405

248

2.7

1.9

409

7.0

0.4

600

B

10

36

43

28

308

187

2.0

1.9

350

6.0

0.4

600

B

14

50

85

35

384

215

2.3

1.9

380

6.5

0.4

600

B

18

65

141

41

454

237

2.5

1.9

403

6.9

0.4

600

C

16

58

39

30

397

204

2.2

1.9

367

6.3

0.4

600

C

21

76

68

36

480

227

2.4

1.9

492

6.7

0.4

600

C

26

94

104

41

562

248

2.7

1.9

413

7.1

0.4

① Nozzle variant ② Air-regenerated noise


Reference values

Parameter Cooling Heating

tPr

16 °C

22 °C

tWV

16 °C

50 °C

tR

26 °C

22 °C

V

80 l/h

50 l/h


Active chilled diffusers of Type DID-R, with radial air discharge and high thermal output, providing high thermal comfort levels.

For installation flush with the ceiling, preferably in rooms with a height up to 4.00 m.

The units consist of a casing with suspension points, a spigot, and a vertical heat exchanger with condensate drip tray.

Three nozzle variants to optimise induction based on demand.

Special characteristics

  • Radial air discharge
  • Vertical heat exchanger as 2-pipe or 4-pipe system, with condensate drip tray that is useful if the temperature temporarily falls below the dew point
  • Water connections at the side, Ø10 mm Cu pipe with plain tails

Materials and surfaces

  • Casing made of galvanised sheet steel
  • Diffuser face made of aluminium
  • Heat exchanger with copper tubes and aluminium fins
  • Exposed surfaces are powder-coated pure white (RAL 9010) or in any other RAL colour
  • Heat exchanger also in black (RAL 9005)
  • Casing powder-coated black (RAL 9005) as an option

Construction

  • Powder-coated RAL 9010, pure white, gloss level 50 %
  • P1: Powder-coated in any other RAL colour, gloss level 70 %
  • P1: Powder-coated RAL 9006, white aluminium, gloss level 30 %

Technical data

  • Nominal size: 600, 625 mm
  • Circular diffuser: Ø598 mm
  • Square diffuser: 593, 598, 618, 623 mm
  • Height: 250 mm
  • Primary air spigot, diameter: 98 mm
  • Primary air volume flow rate: 12 – 25 l/s or 43 – 90 m³/h
  • Cooling capacity: up to 550 W
  • Heating capacity: up to 500 W
  • Max. operating pressure: 6 bar
  • Max. operating temperature: 75 °C

Sizing data

Primary air

  • V _______________________ [m³/h]
  • Δpt _______________________ [Pa]

Air-regenerated noise

  • LWA _______________________ [dB(A)]

Cooling

  • Qges _______________________ [W]

Heating

  • Qges _______________________ [W]

This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.

00135712_0

 Type
DID-R       Active chilled diffuser, circular

 Square diffuser face
       No entry: none
Q       With square diffuser face

 Heat exchanger
2       2-pipe
4       4-pipe

 Nozzle variant
A       Small
B       Medium
C       Large

 

 Nominal size [mm]
       Circular diffuser face
598


       Square diffuser face
593
598
618
623

 Exposed surface
       No entry: powder-coated RAL 9010, pure white
P1       Powder-coated, specify RAL CLASSIC colour

       Gloss level
       RAL 9010 50 %
       RAL 9006 30 %
       All other RAL colours 70 %

 Surface of casing and heat exchanger
       No entry: untreated
G1       RAL 9005, black
G2       RAL 9005, black, only casing

 Valves and actuators
       No entry: none
VS       With

DID-R-2-A/598

Circular diffuser face


Heat exchanger

2-pipe

Nozzle variant

Small

Nominal size

Ø598 mm

Exposed surface

RAL 9010, pure white, gloss level 50 %

Surface of casing and heat exchanger

Untreated


DID-R-Q-4-B/593/P1-RAL9016/G1/VS

Square diffuser face


Heat exchanger

4-pipe

Nozzle variant

Medium

Nominal size

Ø598 mm

Exposed surface

RAL 9016, traffic white, gloss level 70 %

Surface of casing and heat exchanger

RAL 9005, black

Valves and actuators

With


 

Variants, Dimensions and weight

  • Variants
  • Dimensions and weight
DID-R 00133589_0


Dimensions [mm]

Nominal width ØE

600

593

600

598

625

618

625

623


Weights

Nominal size kg/piece

DID-R

10

DID-R-Q

11

Contained water (max.)

1


Installation examples, Installation details, Basic information and nomenclature

  • Installation examples
  • Installation details
  • Basic information and nomenclature

Installation and commissioning

  • Preferably for rooms with a clear height up to 4.00 m
  • Flush ceiling installation
  • Side entry primary air spigot
  • Circular Ø598 mm or square 593, 598, 618, or 623 mm, hence suitable for all ceiling systems, particularly for grid ceilings with grid size 600 or 625 and for plasterboard ceilings
  • Installation and connections to be performed by others; fixing, connection and sealing material to be provided by others
  • Active chilled beam has 3 suspension points for on-site installation (by others)
  • Heat exchangers are fitted with water flow and water return connections at the narrow side

Installation into T-bar ceilings or continuous ceilings

  • To avoid too much load on the ceiling, the suspension points should be used

LN [mm]

Nominal length

LWA [dB(A)]

Sound power level

tPr [°C]

Primary air temperature

tWV [C°]

Water flow temperature – cooling/heating

tR [C°]

Room temperature

tR [C°]

Room temperature

tAN [C°]

Secondary air intake temperature

QPr [W]

Thermal output – primary air

Qtot [W]

Thermal output – total

QW [W]

Thermal output – water side, cooling/heating

VPr [l/s]

Primary air volume flow rate

VPr [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]

Pressure drop, water side

∆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

LN [mm]

Nominal length

Mixed flow

The supply air is discharged from the diffuser 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. Mixed flow systems typically provide a uniform temperature distribution and air quality within the space. The originally high velocity of the turbulent air jet decreases rapidly due to the high induction levels of mixed flow systems.

Heat exchanger

The maximum water-side operating pressure for all heat exchangers is 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.

References

Installation example DID-R

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