Trox Technik VARYCONTROL LVC, Руководство по установке и пусконаладке

Страница: 17 / 36

Upstream conditions with circular ducting
Type Bend Junction
LVC
Ä Fig. 11
– 1
TVE
TVR
Ä Fig. 12
TVZ
TVM
TVRK
TVLK
– 1
1) No straight entry flow required
Bend: LVC, TVE, TVR, TVZ, TVM, TVRK, TVLK
Fig. 11: Bend
A bend with a centre line curvature radius of at least
1D – without an additional straight duct section
upstream of the VAV terminal unit – has only a negli-
gible effect on the volume flow rate accuracy.
Junction: TVR, TVZ, TVM, TVRK
Fig. 12: Rounded junction from a main duct
A junction causes strong turbulence. The stated
volume flow rate accuracy can only be achieved with a
straight duct section of at least 5D upstream.
4.5.2 Rectangular ducting

ATTENTION: Observe air direction arrows on VAV
terminal units during installation
Ä
15

Observe EN 1505 for fittings and bridges, in partic-
ular:
–
No sharp-edged bridges
– At reductions and expansions: slants max. 7.5°
per leg

Secondary silencer TX can be installed directly
upstream/downstream of the volume flow controller,
non-active section to the volume flow controller,
Fig. 26.

For splitter sound attenuators MSA, XSA, RSA,
keep a distance of 4H in front of the VAV terminal
unit.

Connection of fire dampers (same nominal size):
–
In front of the VAV terminal unit: at a distance 4H
– Behind the VAV terminal unit: without distance,
observe the movement range of the damper
blade.
Upstream conditions with rectangular ducting
Type Bend Junction
horiz. vertical horiz. vertical
TVJ
Ä
Fig. 13
Ä Fig. 14
Ä
Fig. 16
Ä Fig. 17
TVT
TZ-
Silenzio
Ä
Fig. 15
Ä Fig. 18
TA-
Silenzio
Ä Fig. 19
TVA
Ä
Fig. 18 / Fig. 19
Installation
Upstream conditions > Rectangular ducting
VAV terminal units VARYCONTROL 17