Service And Maintenance - Ferroli ATLAS D ECO 34 COND SI UNIT Instructions D'utilisation, D'installation Et D'entretien

3.8 Conversion of boiler with burner to sealed chamber
ATTENTION: The connection with separate pipes indicat-
B
ed here can be done only and exclusively with the sealed
chamber kit.
A kit is available on request for converting the boiler with burner to sealed chamber. This
conversion allows the air necessary for combustion to be sucked directly from the out-
side.
For installation, refer to the instructions contained in the kit.
fig. 25 - Sealed chamber conversion kit
After installation, the unit becomes a "C type" with sealed chamber and forced draught.
The air inlet and fume outlet must be connected to one of the extraction/suction systems
specified below. The unit is approved to operate with all the Cxy flue configurations given
in these instructions. Some configurations may be expressly limited or not permitted by
law, standards or local regulations. Before proceeding with installation, check and care-
fully observe the above instructions. Also, comply with the provisions on the positioning
of wall and/or roof terminals and the minimum distances from windows, walls, ventilation
openings, etc.
Only use ducts in stainless steel, suitable for use with oil-fired condensing heat
A
generators.
Connection with separate pipes
fig. 26 - Examples of connection with separate pipes (
Before installation, make sure the maximum permissible length has not been exceeded,
by means of a simple calculation:
1. Completely establish the layout of the system of split flues, including accessories
and outlet terminals.
2. Consult the table 3 and identify the losses in m
ponent, according to the installation position.
3. Check that the sum total of losses is less than or equal to the maximum permissible
length in table 2.
Table. 2 - Separate ducts
Model
Max. permissible length
38
EN
ATLAS D ECO 34 COND SI UNIT
= Air / = Fumes)
(equivalent metres) of every com-
eq
Separate ducts
ATLAS D ECO 34 COND SI UNIT
25 m
eq
cod. 3541Q472 - Rev. 00 - 06/2021
Table. 3 - Accessories
Ø 80 PIPE 0.5 m M/F
1 m M/F
2 m M/F
BEND 45° F/F
45° M/F
90° F/F
90° M/F
90° M/F + Test point
PIPE SECTION with test point
for condensate drain
TEE for condensate drain
TERMINAL air, wall
fumes, wall with antiwind
FLUE Split air/fumes 80/80
Fume outlet only Ø80
Ø 100 REDUCTION from Ø80 to Ø100
from Ø100 to Ø80
PIPE 1 m M/F
BEND 45° M/F
90° M/F
TERMINAL air, wall
fumes, wall with antiwind

4. SERVICE AND MAINTENANCE

All adjustment, conversion, commissioning and maintenance operations described be-
low must only be carried out by Qualified Personnel (meeting the professional technical
requirements prescribed by current regulations) such as those of the Local After-Sales
Technical Service.
FERROLI declines any liability for damage and/or injury caused by unqualified and un-
authorised persons tampering with the unit.
4.1 Adjustments
TEST mode activation
Press the heating buttons (details 3 and 4 - fig. 1) together for 5 seconds to activate the
TEST mode. The boiler switches on irrespective of the system or DHW request.
The heating symbol (detail 24 - fig. 1) and DHW symbol (detail 12 - fig. 1) flash on the
display.
fig. 27 - TEST mode
To deactivate the Test mode, repeat the activation sequence.
The TEST mode is automatically disabled in any case after 15 minutes.
Losses in m
eq
Air Fume exhaust
adjustment
Vertical Horizontal
0.5
1.0
2.0
1.2
1.2
2.0
1.5
1.5
0.2
-
-
2.0
-
-
-
0.0
1.5
0.4 0.4 0.8
0.6 1.0
0.8 1.3
1.5 -
- 3.0