Beretta 20141085, Installation Manual, Page: 72 / 112

72
3.5 Adjustments
The thermal module
Power Max BOX
is supplied for operation with
G20 (methane gas), as indicated by the type plate, and has already
been factory-calibrated by the manufacturer.
If further adjustments need to be made, for example after non-sched-
uled maintenance, replacing a gas valve or switching the gas supply,
follow the instructions below.
b
Adjustments to maximum and minimum power must be per-
formed in the indicated sequence and only by Technical As-
sistance Centre.
Before making the regulation:
- access inside the module
- identify the unit on which you want to operate.
CO2 ADJUSTMENT AT MAXIMUM POWER
- Press the MENU key, select "System test" and press
●
to con-
firm.
“
Menu
”
“
Domestic Hot Water (DHW)
”
“
Information
”
“
Settings
”
“
System Test
”
- Selecting "System Test" you will have the following screen:
“
System Test
”
“
Boiler
” “
Managing
”
- Choose between "Master" or "Dep1 ... N"
- select "Max. power" with the ▲ / ▼ keys and press ● to con-
firm. The fan starts turning at its maximum speed (which can
vary based on the model).
“
System Test
”
“
Test State
” “
High Power
”
“
Fan Speed
”
0
“
rpm
”
“
Ionisation
”
0.0 μA
- the appliance will operate at maximum power.
- unscrew the flue gas probe (1) and insert the combustion ana-
lyzer probe
- set the CO2 with a screwdriver on the regulation screw (2)
placed on the gas valve, thus reaching the value reported on
the table.
CO2% maximum power
Gas type
G20 G25 G30 G31
Power Max BOX 130-2 P
9 +0.2
-0.2
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX
160-2 P
9 +0.2
-0.2
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX
200-2 P
9 +0.2
-0.4
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX 260-2 P
9 +0.2
-0.4
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX
300-2 P
9 +0.2
-0.4
(*)
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX 330-3 P
9 +0.2
-0.4
(*)
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX
390-3 P
9 +0.2
-0.4
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX
450-3 P
9 +0.2
-0.4
(*)
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX
520-4 P
9 +0.2
-0.4
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX 600-4 P
9 +0.2
-0.4
(*)
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
b
(*) In Belgium and Switzerland the value must be adjusted to
8.6 +0.6
-0.0
.
CO2 ADJUSTMENT AT MINIMUM POWER
- Select "Min. power" with the
▲
/
▼
keys and press
●
to confirm.
“
System Test
”
“
Test State
” “
Low Power
”
“
Fan Speed
”
0
“
rpm
”
“
Ionisation
”
0.0 μA
- the appliance will operate at minimum power.
- Adjust the CO2 using a screwdriver on the adjustment screw
(3) on the fan unit, so as to obtain a value listed in the table.
CO2% minimum power
Gas type
G20 G25 G30 G31
Power Max BOX
130-2 P
9 +0.2
-0.2
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX 160-2 P
9 +0.2
-0.2
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX
200-2 P
9 +0.2
-0.4
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX
260-2 P
9 +0.2
-0.4
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX
300-2 P
9 +0.2
-0.4
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX 330-3 P
9 +0.2
-0.4
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX
390-3 P
9 +0.2
-0.4
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX
450-3 P
9 +0.2
-0.4
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX 520-4 P
9 +0.2
-0.4
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2
Power Max BOX
600-4 P
9 +0.2
-0.4
9 +0.2
-0.2
10,4
+0.2
-0.2
10,4
+0.2
-0.2