Application
Special characteristics
Nominal sizes
Variants
Heat exchanger
Nozzle variants
Construction
Attachments
Accessories
Useful additions
Construction features
Materials and surfaces
Standards and guidelines
Maintenance
Functional description
Under sill induction units provide centrally conditioned primary air (fresh air) to the room and use heat exchangers for cooling and/or heating.
The primary air is discharged through nozzles and induces secondary air (room air), which passes through the heat exchanger.
Primary and secondary air mix and are then supplied to the room as an inducing displacement flow.
Nominal length | 600, 900, 1200 mm |
Length | 643, 943, 1243 mm |
Height | Min. 555 mm, max. 605 mm |
Width | 155 mm |
Primary air volume flow rate | 4 – 40 l/s or 14 – 144 m³/h |
Cooling capacity | Up to 950 W |
Heating capacity | Up to 470 W |
Max. operating pressure, water side | 6 bar |
Max. operating temperature, water side | 75 °C |
The quick sizing table contains operating points for defined reference units.
Quick sizing – spigot diameter 100 mm
600 | M | 3 | 10.8 | 71 | <20 | 193 | 157 | - 1.2 | 2.44 | 180 | 3.1 | 0.19 |
600 | M | 5 | 18.0 | 199 | 22 | 275 | 214 | -1.7 | 2.44 | 246 | 4.2 | 0.19 |
600 | M | 7 | 25.2 | 389 | 32 | 346 | 262 | -2.0 | 2.44 | 301 | 5.2 | 0.19 |
600 | G | 5 | 18.0 | 51 | <20 | 238 | 178 | -1.4 | 2.44 | 203 | 3.5 | 0.19 |
600 | G | 9 | 32.4 | 166 | 23.5 | 365 | 256 | -2.0 | 2.44 | 294 | 5.1 | 0.19 |
600 | G | 12 | 43.2 | 295 | 32 | 450 | 305 | -2.4 | 2.44 | 351 | 6.0 | 0.19 |
600 | U | 10 | 36.0 | 67 | <20 | 346 | 226 | -1.8 | 2.44 | 259 | 4.5 | 0.19 |
600 | U | 15 | 54.0 | 152 | 27 | 473 | 292 | -2.3 | 2.44 | 336 | 5.8 | 0.19 |
600 | U | 20 | 72.0 | 270 | 35 | 590 | 349 | -2.7 | 2.44 | 403 | 6.9 | 0.19 |
900 | M | 5 | 18.0 | 83 | <20 | 304 | 243 | -1.9 | 3.13 | 279 | 4.8 | 0.24 |
900 | M | 7.5 | 27.0 | 187 | 24 | 399 | 308 | -2.4 | 3.13 | 355 | 6.1 | 0.24 |
900 | M | 10 | 36.0 | 333 | 32 | 484 | 362 | -4.8 | 3.13 | 420 | 7.2 | 0.24 |
900 | G | 10 | 36.0 | 86 | <20 | 427 | 307 | -2.4 | 3.13 | 353 | 6.1 | 0.24 |
900 | G | 15 | 54.0 | 194 | 29 | 570 | 389 | -3.0 | 3.13 | 449 | 7.7 | 0.24 |
900 | G | 20 | 72.0 | 345 | 38 | 699 | 458 | -3.6 | 3.13 | 531 | 9.1 | 0.24 |
900 | U | 15 | 54.0 | 64 | <20 | 505 | 324 | -2.5 | 3.13 | 374 | 6.4 | 0.24 |
900 | U | 20 | 72.0 | 115 | 28 | 628 | 386 | -3.0 | 3.13 | 446 | 7.7 | 0.24 |
900 | U | 25 | 90.0 | 180 | 35 | 743 | 441 | -3.4 | 3.13 | 511 | 8.8 | 0.24 |
1200 | M | 5 | 18.0 | 45 | <20 | 326 | 266 | -2.1 | 3.83 | 306 | 5.3 | 0.29 |
1200 | M | 10 | 36.0 | 182 | 25 | 516 | 395 | -3.1 | 3.83 | 457 | 7.9 | 0.29 |
1200 | M | 15 | 54.0 | 410 | 37 | 674 | 493 | -3.9 | 3.83 | 572 | 9.8 | 0.29 |
1200 | G | 10 | 36.0 | 47 | <20 | 453 | 332 | -2.6 | 3.83 | 383 | 6.6 | 0.29 |
1200 | G | 15 | 54.0 | 107 | 23 | 601 | 320 | -3.3 | 3.83 | 486 | 8.4 | 0.29 |
1200 | G | 20 | 72.0 | 190 | 32 | 735 | 494 | -3.9 | 3.83 | 573 | 9.9 | 0.29 |
1200 | U | 20 | 72.0 | 64 | 25 | 656 | 415 | -3.2 | 3.83 | 480 | 8.3 | 0.29 |
1200 | U | 30 | 108.0 | 145 | 37 | 886 | 524 | -4.1 | 3.83 | 609 | 10.5 | 0.29 |
1200 | U | 40 | 144.0 | 257 | 46 | 1097 | 614 | -4.8 | 3.83 | 717 | 12.3 | 0.29 |
① Nozzle variant ② Air-regenerated noise
Quick sizing – spigot diameter 125 mm
600 | 2U | 20 | 72.0 | 71 | <20 | 496 | 255 | -2.0 | 2.44 | 254 | 4.4 | 0.19 |
600 | 2U | 28 | 100.8 | 139 | 30 | 652 | 315 | -2.5 | 2.44 | 316 | 5.4 | 0.19 |
600 | 2U | 35 | 126.0 | 218 | 36 | 783 | 361 | -2.8 | 2.44 | 364 | 6.3 | 0.19 |
900 | 2U | 20 | 72.0 | 30 | <20 | 525 | 283 | -2.2 | 3.13 | 283 | 4.9 | 0.24 |
900 | 2U | 30 | 108.0 | 67 | 26 | 726 | 364 | -2.8 | 3.13 | 367 | 6.3 | 0.24 |
900 | 2U | 40 | 144.0 | 120 | 35 | 915 | 432 | -3.4 | 3.13 | 439 | 7.5 | 0.24 |
1200 | 2U | 26 | 93.6 | 28 | 20 | 674 | 360 | -2.8 | 3.83 | 362 | 6.2 | 0.29 |
1200 | 2U | 30 | 108.0 | 38 | 25 | 753 | 391 | -3.1 | 3.83 | 395 | 6.8 | 0.29 |
1200 | 2U | 40 | 144.0 | 67 | 34 | 946 | 463 | -3.6 | 3.83 | 472 | 8.1 | 0.29 |
① Nozzle variant ② Air-regenerated noise
Reference values
tR | 16 °C | 22 °C |
tPr | 26 °C | 22 °C |
tWV | 16 °C | 50 °C |
VW | 110 l/h | 50 l/h |
Induction units of Type IDB, for under sill or wall installation, with one-way discharge and high thermal output, providing high thermal comfort levels.
For installation under the sill or on a wall.
The units consist of a casing with a primary air plenum, spigot, non-combustible nozzles, and vertical heat exchanger; a condensate drip tray is optional.
Special characteristics
Materials and surfaces
Construction
Technical data
This specification text describes the general properties of the product.
IDB–2–G–RE–SL/1200×123
Heat exchanger | 2-pipe |
Nozzle variant | Large |
Arrangement of the water connection | Right side |
Arrangement of the air connection | Left side |
Nominal length | 1200 mm |
Spigot diameter | Ø123 mm |
IDB–4–U–LI–SL–KW/1200×123/WB/G1/FS/VS
Heat exchanger | 4-pipe |
Nozzle variant | Extra large |
Arrangement of the water connection | Left side |
Arrangement of the air connection | Left side |
Condensate drip tray | With |
Nominal length | 1200 mm |
Spigot diameter | Ø123 mm |
Wall and floor fixing | With |
Surface of casing and heat exchanger | Black |
Lint screen | With |
Valves and actuators | With |
Weight [kg]
Unit | 9 | 15 | 21 |
Contained water | 1.2 | 1.8 | 2.4 |
Condensate drip tray | 0.6 | 0.9 | 1.2 |
Lint screen | 0.8 | 1.1 | 1.4 |
Dimensions [mm]
600, 900, 1200 | 98 |
600, 900, 1200 | 123 |
Installation and commissioning
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
Inducing displacement flow
The supply air is discharged near the external wall and with a medium velocity between 1.0 and 1.5 m/s. Due to the induction effect the supply air velocity is rapidly reduced such that, in cooling mode, the supply air displaces the room air over the entire floor area. The convection from people and other heat sources causes the fresh air from the pool to rise and create comfortable conditions in the occupied zone.
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.
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Siamo qui per te
Specifichi il suo messaggio ed il tipo di richiesta
Tel.: +39 029829741 | Fax: +39 0298297460
Contatti
Grazie per il tuo messaggio!
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Il nostro dipartimento per la gestione delle richieste ti contatterà appena possibile.
Per domande di carattere generale riguardanti i nostri prodotti o servizi, è possibile contattare:
Tel.: +39 029829741 | Fax: +39 029829760