EN
Connect
20
DN65 DN80 DN100
Screw diameter M16
Strength class ≥4.6
Tightening torque 95Nm
Screw length ≥65mm ≥70mm
Never interconnect 2combination anges.
5.6 Insulate
Only utilise thermal insulation shell in heating applica-
tions with uid temperature >20°C.
During cold and air-conditioning applications use stand-
ard, diffusion-proof insulation materials. Empty conden-
sation drain ➜ Fig.
11
.
5.7 Following installation
◾
Check impermeability of the pipe/ange connection.
6 Connect
6.1 Personnel requisition
The electrical connection may only be performed by a
qualied electrician.
6.2 Requirements
ATTENTION
Wrong connection of the pump leads to damage to the
electronics.
◾
Observe voltage rating on the rating plate.
◾
Maximum back-up fuse: 10A, inactive or circuit breaker
with Ccharacteristic
◾
Never connect to an uninterruptible power supply or
IT-networks.
◾
During external connection of the pump deactivate a
pulse of the voltage (for example phase angle control).
◾
Switching the pump via triacs/solid-state relays must be
examined on a case-by-case basis.
◾
During deactivation with on-site power relay:
Rated current ≥10A, rated voltage 250VAC
◾
Note switching frequency:
– Switching on/off mains voltage ≤100/24h
– ≤20/h at a switching frequency of 1min between
switching on/off via mains voltage
◾
Secure pump with a residual-current device (type A or B).
◾
Leakage current I
eff
≤3.5mA
◾
The electrical connection must be made via a xed
connecting cable equipped with a connector device or an
all-pole switch with a contact opening width of at least
3mm (VDE0700/Part1).
◾
To protect against leakage and for strain relief to the
threaded cable connection use a connection pipe with
sufcient outer diameter ➜ Fig.
15
.
◾
Use a heat-resistant connecting cable where uid tem-
peratures exceed 90°C.
◾
Lay the connection pipe in such a way that it touches
neither the pipes nor the pump.
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