4.3 Version with separate junction box
For products supplied by ZIEHL-ABEGG with a separate junction box, note the following information.
1
Separate junction box made of plastic or metal
2
Lid screws
Tightening torque: Plastic box 1.3 Nm/12 Lb In, metal box
2.6 Nm/23 Lb In
3
Cable glands (see table below)
4
Screw plugs, plastic/brass
Tightening torque: 2.5 Nm/22 Lb In
Cable glands
Thread size Material Tightening torques M
A
M12x1.5
Plastic
1.5 Nm 13 Lb In
Brass
4 Nm 35 Lb In
M16x1.5
Plastic
2.5 Nm 22 Lb In
Brass
5 Nm 44 Lb In
M20x1.5
Plastic
4 Nm 35 Lb In
Brass
6.5 Nm 58 Lb In
M25x1.5
Plastic
6.5 Nm 58 Lb In
Brass
6.5 Nm 58 Lb In
M32x1.5
Plastic
6.5 Nm 58 Lb In
4.4 Assembly in a humid atmosphere
Info
If the device is not in use for longer periods in a humid atmosphere, it is recommended to operate the
motor/fan for at least 2 hours every month at 80-100 % of maximum speed to remove any moisture
that has penetrated inside.
4.5 Motorheating
A continuous power supply is required for safe operation down to the minimum permitted ambient
temperature (see technical data).
If the motor is not operated with an existing power supply (no setting signal, switch off by enable), the
motor heating switches back on automatically at a controller inside temperature of -19 °C and back off
when heated up to -15 °C.
Heating takes place via the motor winding whereby a current is induced which cannot cause rotation.
4.6 Installation of axial fans
4.6.1 Fans design A, D, K, S and W (without nozzles)
For attachment to fixed motor flange use screws with property class 8.8 or A2-70 (stainless steel) to
EN ISO 4014 and provide with suitable screw locking.
Permissible tightening torques M
A
Thread size M6 M8
Property class 8.8, friction coefcient µges = 0.12 9.5 Nm 23 Nm
Stainless steel A2-70, friction coefcient µges = 0.12 7 Nm 17 Nm
Screw penetration ≥ 1.5 x d ≥ 1.5 x d
When using screws with different friction values or strength classes, different tightening torques may
be necessary.
Assembly instructions ECblue Mounting
L-BAL-F055D-GB 2021/51 Index 006 Part.-No.
12/56
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