G20 gas
BTN 25
BTN 32
BTN 42
BTFS 24
BTFS 32
BTFS 36
CO2 content
%
5.1
4.5
6
7.6
8.3
8.2
Flue gas temperature
°C
111
103
121
120/130
110/120
120/130
Flue gas mass flow rate
kg/h
101.16
133.56
162
55
67
76
Max output gas consumption
stm
3
/h
2.95
3.7
4.97
2.81
3.64
4.15
Gas pressure
mbar
20
20
20
20
20
20
Gas to burner pressure
mbar
11.5
9.5
11.5
11
9.5
12
Main burner nozzle diameter
mm
2.6
2.6
2.6
2.4
2.9
2.9
Pilot burner nozzle diameter
mm
2 x 0.27
2 x 0.27
2 X 0.27
2 x 0.27
2 x 0.27
2 x 0.27
G30 gass
CO2 content
%
6.2
5.4
7.1
9.8
9.7
11.1
Flue gas temperature
°C
110
105
122
120/130
120/130
120/130
Flue gas mass flow rate
kg/h
101.16
133.56
162
55
67
76
Max output gas consumption
kg/h
2.2
2.76
3.7
2.1
2.7
3.1
Gas pressure
mbar
29
29
29
29
29
29
Gas to burner pressure
mbar
26.5
26.5
26.5
26
25.5
26
Main burner nozzle diameter
mm
1.55
1.55
1.55
1.5
1.7
1.8
Pilot burner nozzle diameter
mm
1 x 0.22
1 x 0.22
1 X 0.22
1 x 0.22
1 x 0.22
1 x 0.22
3. INSTRUCTIONS FOR THE FITTER
14
3.1. Installation standard
The boiler is to be installed in compliance with the country appli-
cable standards, laws and regulations which are intended as fully
transcribed to this manual.
3.2. Installation
3.2.1. Packaging
The boiler is packaged in a strong cardboard box fixed by two
screws to a wooden pallet. Once the cardboard box is removed,
check the boiler to be undamaged. The packaging material can be
recycled and it must be disposed of accordingly.
Keep the packaging out of the reach of children as it may re-
present a hazard.
The manufacturer shall not be held liable for injury to persons
and animals or damage to property resulting from non-obser-
vance of the above.
The packaging contains:
- Installation, use and maintenance instruction manual
- Four legs with threads
3.2.2 Choosing where to install the boiler
When choosing where to install the boiler, follow the instructions
below:
- indications in paragraph 3.2.5 Air/flue gas system configuration
- leave a 50 cm clearing on each side of the boiler to facilitate
maintenance operations
- do not install the boiler in a high humidity room
- do not install a natural draught boiler (BTN model) in a corrosive
vapor or dusty air room like hairdressers’, laundrettes etc. as boi-
ler components life span might result considerably shorter than
average,
- Boiler room is not to be accessible by people, children and ani-
mals
3.2.3 Positioning the boiler
Before connecting the boiler to DHW and CH system pipes, clean
the pipes removing any trace of metal from processing and welding
as well as any oil and grease which could damage the boiler or
interfere with its operation.
NB: Do not use solvents which could damage the componen-
ts.
The manufacturer shall be waived from all liabilities for injury to
persons and animals or damage to property resulting from non-
observance of the above.
In order to install the boiler, after laying it where is to be positioned,
proceed as follows:
- detach the front panel
- detach the two screws fixing it to the wooden pallet (pic. 7A)
- In order to remove the boiler from the wooden pallet it is neces-
sary to raise it: proceed carefully and delicately. Insert two 2” thick
metal bars in the openings under the boiler chassis which supports
the heat exchanger (pic. 7B), raise the boiler avoiding to damage
the hydraulic connections and position it on the ground.
- fix the four threaded legs to the boiler and adjust them for best
installation stability;
- connect the boiler to CH flow, CH return, cold water network,
DHW flow, and gas network pipes
- connect the boiler to air and gas flue pipes as needed
- connect the boiler electronics to the room thermostat (when avai-
lable)
- connect the boiler to the power main supply
