3.0
Design
The VAR High-Pressure In-Line Duct Fan is a direct-drive fan whereby the motor is positioned in the air stream. The air
flow direction blows via the motor. The axial flow pattern allows a low-loss, linear airflow and ensures the high degree
of efficiency of the fan. The duct casing with flanges on both sides, integrated guide vane and motor bracket is made
of galvanized steel sheet. The axial impeller with fourteen spatially curved blades is made of plastic. The dynamic ba-
lancing takes place according to ISO 1940 T1, class 6.3.
Installation examples – VAR with accessories
5
VARD / VARW.. – High-Pressure In-Line Duct Fans
Installation and Operating Instructions
UK
CHAPTER 3
INSTALLATION
Protection grille SG
Suction nozzle ASD-SGD
Pipe cover flap RVS
Counterflange FR
Protection grille SG
Canvas connection STS
Fig .1
Vibration damper SDD..
for pressure load
Mounting bracket MK
Mounting bracket MK
Vibration damper SDZ..
for tensile load
VAR..
Extension pipe VR (optional)
- Required for protruding motor
see section 3.20
Duct silencer RSD
Fig .2
Fig .3
Extension pipe
VR
VAR..
Mounting ring
Vertical MRV..
Vibration damper SDD..
for pressure load
Extension pipe
VR
VAR..
Vibration damper SDZ..
for tensile load
Mounting ring
Vertical MRV..
