Connecting The Electrical Line; Connecting The Diesel (Oil) Line - Diesel Burner - Munters GFn Manual De Uso Y Mantenimiento

• the exhaust pipe must be properly connected to
the air heater. Use self-tapping screws to
assemble the elements of the exhaust pipe
system in order to prevent wind from moving the
pipe;
• exhaust pipe joints must be air and water tight;
• in case the roof of the building is made of
inflammable or plastic material, an installer must
take the necessary precautions to avoid risk of
fire. It is recommended to take precautions and
use heat insulating materials;
• the installer must ensure that the top cover of the
exhaust system (hat) is properly fixed. It is
mandatory to prevent rain or snow coming into
the exhaust pipe and into the combustion
chamber;
• horizontal runs of exhaust pipe should have a rise
of 1 in 10 away from the heater;
• recommended flue chimney draft is 0.15 mbar.
NOTE When installing the Chimney kit, please refer
to fig. 12.
The short chimney with holes, delivered with the
heater, must be installed at the base of the Chimney
kit, as shown in the picture (see ref. 1).
Munters recommends to install a Chimney kit with
total length (vertical) of minimum 4 meters. In case
of installing and using the heater in locations where
high winds are frequent (> 10 km/h), it is highly
recommended to use an Anti-Wind terminal for
Chimney Kit (see ref. 2) available on request.

5.4 Connecting the electrical line

WARNING Electric shock and fire hazards. The
use of inadequate power supply or undersized
cables may lead to electric shock or fire. Electric
shock and fire may cause injury or death. Carefully
observe the following points:
• all electric equipment connections must be
performed in accordance with local regulations;
• the electric connection must be performed only by
qualified personnel;
• before using the air heater, it is mandatory to
check that it is properly connected by means of
appropriate electrical power line;
• grounding connection is mandatory and must
comply with national and local regulations;
• do not use undersized electric cables.
The GFn air heaters are designed for operation with
230V ± 5% monophase 50 Hz electrical systems
(see nameplate attached to the air heater). The air
heaters are delivered complete with all internal
wiring installed and configured by the manufacturer.
WARNING Before making any operation make
sure the air heater is turned off (see Chapter 6.2)
and main power line is not activated.
The electrical control box has a dedicated orifice
that allows the safe and correct installation of the
electrical cable (see fig. 3 and fig. 4) and it
guarantees IP55 protection class. The electrical
cable must be arranged only through the dedicated
orifice. For safety reasons note the following points:
• do not use other orifice for inserting the electrical
cable, other than the one specified by the
manufacturer;
• do not connect the electrical cable by using the
electrical box opening/window;
• do not leave the electrical box opened after
connecting the electrical cable;
• do not manufacture holes in the electrical box, for
inserting electrical cable;
• do not operate the air heater with the electrical
box opened.
In order to connect the air heater to the main power
line, the following operations must be performed:
• disassemble the 4 screws of the electrical
cassette;
• use the dedicated orifice to insert the electrical
cable inside the cassette;
• arrange
connecting the terminals L (brown or black) – N
(blue) – T (yellow-green), see wiring diagram in
Appendix;
• check for correct polarity: L (brown or black) – N
(blue) – T (yellow-green);
• assemble everything in reverse order.
NOTE To guarantee that the electrical control box
complies with IP55 rating, make sure that the cover
is properly positioned, the cable glands are closed
and that the screws are firmly tightened.
In order to ensure proper functioning of the air
heater carefully observe the following electrical
requirements:
• the air heater must be connected to a reliable and
consistent electrical power line. Grounding is
mandatory:
• ensure appropriate electrical cables with proper
cross section for the power absorption of the air
heater (see Appendix), and the length of the
cable itself. The electric cables and additional
components needed are not supplied by the
manufacturer;
• provide isolating devices for automatic protection
against power surges and short circuits;
• provide protective switch for faulty current of the
electric power supply;
• do not allow the use of worn, damaged or cut
cables.
See the wiring diagram in Appendix for connecting
the air heater to the main power line.
5.5 Connecting the diesel (oil) line – diesel
burner
WARNING
licensed qualified technicians can perform the
installation, connection, adjustment and testing of
9 | © Munters AB, 2019
the electrical cables
Fire and explosion hazard! Only
by properly