Atmos
Heating Systems
Installation and user manual EN_FMT
11
1.8. Configuration of flue tube and air supply
See figure below for an overview of possible configurations.
The units are approved for application on the drain
systems:
B23, C13(x), C33(x), C43(x), C53, C63(x), C83(x).
Preferably use flue tube materials, roof ducts and exterior
wall ducts with a quality mark.
With plastic drain materials, use a unit with a flue gas
temperature sensor.
1.9. Environmental conditions
The area in which the unit is installed must satisfy the
applicable regulations.
The wall must be able to bear the weight of the unit (loaded
weight approx. 40 kg).
If you use a different assembly surface than a bricky wall of
sufficient thickness, you must select suitable fixtures
yourself and properly install the unit.
The unit may not be fitted in a chemically aggressive
environment.
The unit with air feed and flue gas exhaust satisfies the
requirements of protection class IP44 and may therefore be
installed in a wet area.
Although the unit is fitted with an internal frost protection, it
may not be exposed to extremely low ambient
temperatures (lower than -10°C).
1.10. Permitted flue resistance
The total resistance of the flue tube and air supply together
may not be greater than 125 Pa.
Indication for the resistance values given in table below
apply to a flow rate of 60 m
3
/hour.
dia. 80 mm
Tube per metre
5.0 Pa
Bend 90°, R = 1.5 D
6.5 Pa
Bend 90°, R = 0.5 D
15.0 Pa
Bend 45°, R = 1.5 D
4.0 Pa
Bend 45°, R = 0.5 D
5.5 Pa
Roof duct (concentric,
1.25 m)
30.0 Pa
1.11. Heating of central heating water
If the room thermostat or space unit indicates that heat is
required for the central heating, the unit will heat the central
heating water as necessary. The power supplied is
automatically adapted to the heat required and is also
continuously variably adapted to the heat demand with the
use of an on/off thermostat.
When the thermostat indicates that the desired temperature
has been reached, the central heating water is no longer
heated. The central heating pump will continue to run for a
previously set time to distribute the heat evenly over the
heating installation.
A differential bypass valve must be installed on plants
where it may happen that various radiators are
simultaneously excluded from the circuit because of
closure of control or zone valves.
The by-pass valve must be mounted in the installation
between the flow and the return, provided that flow
direction indicated by arrow is respected.
To adjust the by-pass valve rotate knob of the graduated
scale on setting 2.5-3.0. This value corresponds to the
meters of pump head (m H2O).
Lock the screw on the groove knob.
