
5
General Hazardous Situations.
To prevent injuries:
▶Ensure that the system cannot be activated unintentionally.
▶Installation and maintenance work may only be carried out by autho-
rized technicians with the appropriate tools.
▶After an interruption in the power supply, ensure that the process is
restarted in a dened or controlled manner.
▶The device may be installed and operated only when in a perfect
condition and in consideration of the operating instructions for the
valve and furnace.
▶Do not put any loads on the valve (e.g. by placing objects on it or
standing on it).
▶Do not make any external modications to the valves. Do not paint
the body parts or screws.
▶The general rules of technology must be observed for application
planning and operation of the device.
Failure to observe this operating manual and its operating instruc-
tions as well as unauthorized tampering with the device release
us from any liability and also invalidate the warranty covering the
device and accessories!
5 TECHNICAL DATA
The following values are indicated on the type label:
•Ambient and medium temperature, voltage 1) (tolerance
±10%), kind of current, pressure
1)
If used in combination with a return ow valve connected electrically in series, the
voltage value on the type label is half the respective mains voltage.
Materials
Housing: DN 6, DN 13: Brass
DN 20: Stainless steel
Seat seal: PTFE (E)
Housing seal: FKM (F)
Coil jacket: Epoxy
Media
Heating oils DIN 51603 Part 1-6 at a viscosity
1.6 ... 76 cST (other media by arrangement with the Bürkert sales oce)
Operating principle 2/2-way valve
A (NC)
P
Protection class: IP65 in accordance with EN 60529 with authorized
device socket in accordance with DIN 175301-803