First start-up
Installation, use and maintenance manual – Next-R
37
5
Table
5.3
R30 gas valve setting table
Gas
Gas network
pressure
Screw pre-adjustment
O
ff
set pressure
CO
2
percentage in fumes
Throttle
O
ff
set
nominal
Minimal heat input
Nominal heat input
Type
mbar
turns
turns
Pa
%
%
G20
See Table
3.1
-6
½
-3
¾
-10
8,5
9,0
G25
full open
-3
¾
-10
8,5
9,0
G25.1
-13
½
-3
¾
-10
9,6
10,1
G25.3
-21
-3
¾
-10
8,5
9,0
G27
-6
¾
-3
¾
-10
8,5
9,0
G2.350
full open
-3
½
-8
8,5
9,0
G30
-8
-3
¾
-10
9,5
11,0
G31
full open
-3
-5
9,1
9,5
LPG
-14
-3
½
-8
9,0
9,6
A tolerance of ±0,3% is applied to all values of CO
2
percentage in fumes.
Table
5.4
R40 gas valve setting table
Gas
Gas network
pressure
Screw pre-adjustment
O
ff
set pressure
CO
2
percentage in fumes
Throttle
O
ff
set
nominal
Minimal heat input
Nominal heat input
Type
mbar
turns
turns
Pa
%
%
G20
See Table
3.1
-5
-3
¾
-10
8,6
9,2
G25
full open
-3
¼
-7
8,5
9,0
G25.1
-8
¼
-3
¾
-10
9,6
10,2
G25.3
-12
-4
-10
8,5
9,0
G27
-8
½
-3
¾
-10
8,6
9,1
G2.350
full open
-3
¾
-10
8,5
9,0
G30
-8
-3
¾
-10
9,5
10,0
G31
full open
-3
-5
9,6
10,1
LPG
-10
¼
-4
-12
9,5
10,1
A tolerance of ±0,3% is applied to all values of CO
2
percentage in fumes.
Table
5.5
R50 gas valve setting table
Gas
Gas network
pressure
Screw pre-adjustment
O
ff
set pressure
CO
2
percentage in fumes
Throttle
O
ff
set
nominal
Minimal heat input
Nominal heat input
Type
mbar
turns
turns
Pa
%
%
G20
See Table
3.1
-14
-3
¾
-10
8,6
9,2
G25
full open
-3
¾
-10
8,5
9,0
G25.1
-16
¾
-3
¾
-10
10,0
10,5
G25.3
full open
-3
¾
-10
8,6
9,2
G27
-16
-3
¾
-10
8,6
9,0
G2.350
full open
-3
¾
-10
8,6
9,1
G30
-4
½
-3
¾
-10
9,9
10,5
G31
full open
-3
¾
-10
9,5
10,0
LPG
-14
¼
-3
¾
-10
9,7
10,3
A tolerance of ±0,3% is applied to all values of CO
2
percentage in fumes.
5.2.2
R60/R80
Figure 5.2
1.
If the appliance is running, switch it o
ff
with the applicable
control system.
2.
Connect a pressure gauge to o
ff
set pressure
fi
tting (A), after
having
fi
rst removed or loosed the sealing screw.
3.
Open contact 27 (L-C terminals), or act on the power level
control device to force gas unit heater operation at mini-
mum power.
4.
Switch on the gas unit heater using the provided control
device.
5.
After about 2 minutes, the combustion control at minimum
power can be carried out.
6.
Turn the o
ff
set adjustment screw until the nominal o
ff
set
pressure value shown in the following Tables is obtained,
with a tolerance of ±1 Pa.
7.
Ensure the CO
2
value is between values indicated in column
"Minimal heat input" of the following Tables, depending on
the model and the gas type used. Otherwise set CO
2
per-
centage reading by acting on the o
ff
set adjustment screw.
Check the burner, which must not have reddened areas.
8.
Disconnect the pressure gauge and tighten the sealing
screw of the pressure intake (A).
9.
Close contact 27 (L-C terminals), or act on the power level
control device to force gas unit heater operation at maxi-
mum power.
10.
After about 2 minutes, the combustion control at maximum
power can be carried out.
11.
Ensure the CO
2
value is between values indicated in column
"Nominal heat input" of the following Tables, depending on
the model and the gas type used.
If the check is successful:
12.
Set contact 27 (L-C terminals) back in its original position or
stop manual forcing of the power level.
If the check is not successful:
13.
Repeat steps 3 to 7 (excluding step 6) to reactivate the
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