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Item Number: 44807


Single or double skin circular VAV terminal units are commonly used for return air applications or for supply applications at low system pressures. Optima terminal

units are ideal for single zone control with supply and return in Master and Slave setup such as offices, hotel rooms or meeting rooms where the required cooling and heating load will vary on demand.


• Damper tightness class 4 according to EN 1751

• Casing tightness class C according to EN 1751

• ILH Hygienic certification VDI 6022 & VDI 3803

for Standard Ventilation & Clean room application

• High measuring accuracy of 5 %

• Air volume range of 36 to 14589 m3/h

• Operating range of up to 1000 Pa

• Double skinn version OPTIMA-R-I with external 50mm

noise & thermal isolation under steel sheet cover

Accessories for OPTIMA-R:

• Attenuators Optima-ASA

Silencers are available to reduce the discharge sound power levels when required. Multi-outlet insulated terminal units are available when multi-zone application is required.


VAV unit housing is constructed from galvanized sheet steel. Special design of multi-point averaging cross flow sensor assures an accurate air flow readings even in difficult installations.

Available sizes:

Inlet / outlet: from ø 80 to ø 630 mm


The VAV terminal units are as standard equipped with BLC (Belimo compact) controllers (LMV-D3 or NMV-D3) without any MP or LON communication capability to be used as stand alone or in master and slave setting. The compact controllers are equally available with

MPBus, ModBus and LON communication capability. On demand as alternative, Gateway communication units can be provided and can be connected later in time to

building management systems to create a zone control by creating bus-rings solutions (only possible if MP-Bus communication is installed).

VAV and Compact controllers are factory calibrated as standard to the air volume indicated in the table or upon request can be adjusted to site required settings prior to dispatch on Vmin and Vmax range. The air volumes can also be readjusted on site with ZTH-Gen hand held

service tool or, for the type OPTIMA-S-...GO... by dials on the controller. If specific air volumes for Vmin and Vmax would be required, this must be indicated prior to order of the units for adequate calibration in the factory.

• BLC1 = Belimo LMV-D3 compact controller

WITH MP-Bus communication

• BLC4 = Belimo LMV-D3 compact controller

WITHOUT MPBus communication

• BLC1-MOD = Belimo LMV-D3 compact controller

WITH MODBUS communication

• GO = Compact controller with parametrizing dials

and display for immediate adjustment at site.

• GO-MOD = Compact controller with parametrizing

dials and display for immediate adjustment at site,

communicative via MODBUS-RTU.


Measuring track length after Elbow or a T-branch etc. installations, L to be min. 3 times duct diameter. If L can not be respected, then minimum of 2 × diameter with perforated equalizing grid should be installed.

Parametros tecnicos

Dimensiones y pesos
Peso 23 kg
IR24-P - Systemair Item Number: 6995 IR24-P .
Presence detector/IR24-PC - Systemair Item Number: 7288 Presence detector/IR24-PC .