11
to domestic hot water and the burner ignites at the minimum
power until the boiler water reaches a temperature of about 50°C.
This device operates only if the boiler is functioning perfectly and:
- the system pressure is sufficient;
- the boiler is powered electrically;
- the gas is distributed.
6 - EXHAUST DISCHARGE ANOMALY SHUTDOWN:
The boiler is fitted with safety devices, which in the event of defec-
tive discharge of exhaust fumes, automatically interrupts the gas
supply, thereby shutting off the boiler.
The shutdown of the boiler is temporary and is indicated by the
illumination of the yellow L.E.D. “E” for a period of about 15 min-
utes.
Once this time period has passed and the discharge state of
exhaust fumes has returned to normal, the boiler automatically
turns back on.
7 - SAFETY SHUTDOWN:
At the start of every lighting phase, the P.C.B. performs a series
of internal controls. If a malfunction occurs, the boiler will shut-
down until the problem has been resolved.
3.9 DRAINING THE
SYSTEM
DRAINING THE HEATING SYSTEM
The heating system must be emptied as follows:
- Turn off the boiler;
- Open the drain valve for the system and place a container below to
catch the water that comes out;
- Empty the system at the lowest points (where present).
If you plan on not using the heating system for an extended period of
time, it is recommended that you add antifreeze with an ethylene glycol
base to the water in the heating lines and radiators if the ambient tem-
perature drops below 0°C during the winter.
This makes repeated draining of the entire system unnecessary.
DRAINING THE DOMESTIC HOT WATER SYSTEM
Whenever there is the danger of the temperature dropping below the
freezing point, the domestic hot water system must be drained as fol-
lows:
- Turn off the general water valve for the household plumbing system;
- Turn on all the hot and cold water taps;
- Empty the remaining water from the lowest points in the system
(where present).
4. GAS ADJUSTMENTS
[1mbar = 10,197 mm c.a.]
Linda
+
24 CS CPR - CATEGORY II
2H3+
Methane gas Liquid Butane gas Liquid Propane gas
G20 G30 G31
Lower Wobbe Index (15°C;1013mbar) MJ/m
3
h 45,67 80,58 70,69
Nominal Delivery Pressure mbar 20 29 37
Minimum Delivery Pressure mbar 17 20 25
Main burner: n. 14 nozzle (ø) mm 1,30 0,77 0,77
Consumption (15°C; 1013mbar) m
3
/h 2,72 ---- ----
Consumption (15°C; 1013mbar) Kg/h ---- 2,02 2,31
Gas Cock Outlet Pressure:
max - min mbar 11,0-2,6 (*) - 6,0 (*) - 7,3
Linda
+
28 CS CPR - CATEGORY II
2H3+
Methane gas Liquid Butane gas Liquid Propane gas
G20 G30 G31
Lower Wobbe Index (15°C;1013mbar) MJ/m
3
h 45,67 80,58 70,69
Nominal Delivery Pressure mbar 20 29 37
Minimum Delivery Pressure mbar 17 20 25
Main burner: n. 14 nozzle (ø) mm 1,30 0,77 0,77
Consumption (15°C; 1013mbar) m
3
/h 3,15 ---- ----
Consumption (15°C; 1013mbar) Kg/h ---- 2,34 2,31
Gas Cock Outlet Pressure:
max - min mbar 11,0-1,6 (*) - 4,6 (*) - 6,0
The outlet pressure of the gas cock is obtained by completely loosen-
ing the screw on the solenoid. The maximum pressure of the gas to the
The boiler can be converted to use either methane (natural) gas
(G20) or LPG (G30 - G31) by an Authorised Service Centre.
The operations that must be performed are the following:
1. Replace the nozzle on the main burner (see table in section 4);
2. Adjust the maximum and minimum thermal capacity values for the
boiler (see table in section 4);
3. Replace the gas rating plate;
4.1 CHANGING THE TYPE OF GAS
CATEGORY II
2H3+
Methane gas Liquid Butane gas Liquid Propane gas
G20 G30 G31
Recommended Soft-light Pressure (mbar) 8.0 16.0 16.0
4. Adjust the maximum thermal power setting;
5. Adjust the soft-light feature;
6. Adjust the ignition delay feature for the heating system (can be set
from 0 to 2 mins.).
burner will be equal to the nominal delivery pressure minus the head
loss within the gas valve.