Application
Special characteristics
Nominal sizes
Variants
Connection
Actuator
Parts and characteristics
Attachments
Accessories
Useful additions
Construction features
Materials and surfaces
Standards and guidelines
Maintenance
Functional description
Jet nozzles are the preferred solution wherever the supply air has to travel large distances from the point of discharge to the occupied zone. It is possible to adapt the discharge angle, and consequently the direction of the airflow, to heating or cooling mode. The supply air to room air temperature difference may range from –12 to +20 K.
Cooling mode
Cooling mode is possible with a positive discharge angle of up to 30°. The supply air jet is directed towards the ceiling, but the higher density of cold air results in an increasing deflection of the air jet towards the floor as the distance from the jet nozzle increases. When the supply air jet reaches the occupied zone, both the supply air to room air temperature difference and the airflow velocity have been reduced to comfortable levels.
This principle of operation allows for long throw distances.
Heating mode
Heating mode is possible with a negative discharge angle of –30° or less. The supply air jet is directed towards the occupied zone. Due to the lower density of warm air the jet becomes buoyant. When the supply air jet reaches the occupied zone, both the supply air to room air temperature difference and the airflow velocity should ideally have been reduced.
The discharge angle can be changed manually or with a thermal or electric actuator.
A swirl unit and cap (optional) allow for reducing the throw distance to 65 % or 75 %.
Nominal sizes | 160, 200, 250, 315, 400 mm |
Volume flow rate range | 20 – 1000 l/s or 72 – 3600 m³/h |
Adjustable discharge angle | –30 to +30° |
Supply air to room air temperature difference | –12 to +20 K |
Quick sizing tables provide a good overview of the volume flow rates and corresponding sound power levels and differential pressures.
Exact values for all parameters can be determined with our Easy Product Finder design programme.
Sizing example
Given data
V = 180 l/s (648 m3/h)
Max. sound power level 35 dB(A)
Quick sizing
Type TJN
Nominal sizes: 250, 315
Selected: TJN/250
TJN, sound power level and total differential pressure
160 | 20 | 72 | 9 | <15 | <5 | <5 |
40 | 144 | 34 | <15 | 8 | <5 | |
160 | 60 | 216 | 76 | 15 | 13 | 6 |
80 | 288 | 135 | 26 | 17 | 8 | |
200 | 35 | 126 | 9 | <15 | 6 | <5 |
70 | 252 | 35 | <15 | 11 | 6 | |
200 | 105 | 378 | 78 | 19 | 17 | 9 |
140 | 504 | 138 | 30 | 23 | 11 | |
250 | 55 | 198 | 8 | 7 | <5 | |
110 | 396 | 33 | <15 | 14 | 7 | |
250 | 165 | 594 | 75 | 21 | 21 | 11 |
220 | 792 | 132 | 33 | 28 | 14 | |
315 | 90 | 324 | 8 | <15 | 9 | <5 |
185 | 666 | 35 | <15 | 18 | 9 | |
315 | 265 | 954 | 71 | 24 | 26 | 13 |
360 | 1296 | 132 | 36 | >30 | 18 | |
400 | 155 | 558 | 8 | <15 | 12 | 6 |
310 | 1116 | 33 | <15 | 24 | 12 | |
400 | 465 | 1674 | 75 | 27 | >30 | 18 |
620 | 2232 | 133 | 38 | >30 | 24 |
All values apply to discharge angle 0°
L: Throw distance with isothermal operation, no throw distance reduction
Adjustable jet nozzles for the ventilation of large internal spaces such as halls and assembly rooms. Air discharge with long throw distance, excellent acoustic properties. Nozzles tilt from –30 to +30° for horizontal air discharge. Discharge angle indication, discharge angle limiting and setting on a concealed scale.
Consists of a casing for the spherical discharge nozzle, flange, face cover ring and nozzle.
For push fitting directly onto circular ducts or as a branch off circular or rectangular ducts.
Special characteristics
Materials and surfaces
Technical data
Sizing data
Air-regenerated noise
This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.
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Order example: TJN-K-E9/250/C/D/S1
Type | TJN |
Connection piece | For rectangular ducts |
Actuator | Modulating, 2 – 10 V DC, 24 V AC |
Nominal size | 250 mm |
Attachments | Outer casing |
Accessories | Swirl unit and cap for throw distance reduction |
Exposed surface | White aluminium, similar to RAL 9006 |
Order example: TJN-R-T1/250-500/D
Type | TJN |
Connection piece | For circular ducts |
Actuator | Thermal actuator |
Nominal size | 250 mm |
Circular duct diameter | 500 mm |
Accessories | Swirl unit and cap for throw distance reduction |
Exposed surface | Pure white, similar to RAL 9010 |
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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