Connecting The Nemo Insert To The Central Heating System - Unico Dragon Series User Manual

decompression chamber
(in the case of a wooden
ceiling, ventilate)
thermal insulation
1.4x air inlet surface
chimney connection
air inlet
50cm3 / 1kW of generated power
thermal protection of
the floor
Fig. 3
Before installation, it is recommended to carry out a
technical assessment and obtain an opinion from an
authorized chimney cleaning company.
To connect the insert to the smoke duct, use a pipe made of
certified heat-resistant sheet with a diameter equal or larger
than the diameter of the outlet pipe of the fireplace.
To ensure proper draft and to prevent local sooting, it is
recommended to use pipe elbows with a slope of max. 45°.
The total height of the chimney must be min. 4m.
If the pressure in the chimney is insufficient (lower than the
one in the table for the given model of the insert), a draft
boosting device should be installed on top of the chimney.
4.6. Connecting the Nemo insert to the central heating
system
Fireplace inserts Unico with a water jacket can be used in
gravity or pump heating open systems as an independent
or supporting heating source. The installation should be
secured in accordance with the requirements of PN-B
02413:1991.
a)
Open system
•
The maximum pressure of the installation should be 1.9
bar.
•
An open expansion vessel should be connected with a
⌀
pipe of min. 28 mm.
•
The expansion vessel must be located above the
highest point of the installation, the overflow hole should
be 0 1".
•
If the fireplace insert is to be installed with another
boiler operating in a closed system, a separating plate
heat exchanger should be used.
•
Regardless of the type of installation, air vents should
be used in those places where there might appear air traps.
•
The central heating installation should be made in such
a way as to always maintain the temperature of water
return to the fireplace above the dew point, i.e. approx.
50°C (e.g. by installing a thermostatic mixing valve
ensuring an appropriate return temperature). This is a
requirement for the warranty to be recognized in the
event of the insert malfunction. This prevents the insert
from humidity resulting from condensation, and hence
from corrosion.
.
Dragon inserts are equipped with the so-called system
7