3.4
Setting the combustion parameters
during a gas check
To carry out the combustion checks (during a gas
change or during maintenance), the gas generator can
be started independently of the heat pump (
"
During each intervention on the electrical
cabinet, make sure that the electricity supply is
disconnected.
-
Open all the heating circuit valves.
"
With underfloor heating circuit and 1-2 circuit
kit with valve: Close the mixer valve by hand.
3.4.1 Heating installation with radiators
•
1
- If the directional valve handle is in
low position
:
- Deactivate the DHW function,
- Wait a few moments for the handle to return to high
position.
•
2
- The directional valve handle is in high position
(heating position):
•
3
- Disconnect the RVS user interface layer (connector
X50
•
4
- Connect the user interface layer to the LMS (
X50
).
-
Initialising the interface takes a few minutes.
-
Set the following parameters (Specialist level:
Maintenance/special operation
):
7143
= On
7145
= Enter the value required
100%
: operation at max
The burner runs at MAX rate.
-
Let the boiler temperature reach 60°C.
-
Carry out a combustion check.
-Check the CO
2
rate (see table below).
-
If necessary, adjust the CO
2
rate by setting the gas
rate on the burner (screw item R1,
-
Adjust the parameter
7145
= Enter the value required
0%
: operation at min
The burner runs at MIN rate.
-Check the CO
2
rate (see table opposite).
-
If necessary, adjust the pressure regulator setpoint
).
-
Check the settings at MAX rate. Modify if necessary.
"
When the settings are complete:
Set the parameter in the initial configuration:
7143
= Off
•
5
-
Reconnect the user interface layer to
the RVS
(
X50
). Initialising the interface takes a few minutes.
•
6
-
Reactivate the DHW function if necessary.
3.4.2 Heating installation with
1
underfloor heating circuit.
"
Close the underfloor heating circuit mixer valve
manually.
The energy created during this setting period
must be dissipated over the domestic circuit:
draw off some domestic hot water to lower the tank
temperature enough (< 35 °C).
•
1a
- The directional valve handle must be in
low
position
(DHW position) (
Follow the
procedure in
§
from N°
3
P
R1
+
-
B
R2
+
-
figure 49 - Gas valve VGU86 S
B
- Plug
R1
- Gas flow rate setting on the burner.
R2
- Pressure regulator value setting.
P
- Gas inlet pressure (network).
Gas
Diaphragm
marker
0%
100%
CO
2
min
CO
2
max
G 20
20
8 to 9 %
8.5 to 9.5 %
G 25
no diaphragm
8 to 9 %
8.5 to 9.5 %
G 31
conical
9.5 to 10.5 %
10 to 11 %
figure 50 -
Rate of CO
2
Installation and commissioning instructions "1485 - EN"
- 43 -
Heat pump alféa hybrid duo gas
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