64
16.3. Connection to central heating radiators, with inertia tank and
installation pump
Figure 50 - Connection to central heating radiators in combination with another boiler, storage heaters, domestic hot
water and in combination with a solar panel
Approximate calculation of the inertia tank:
Pellet boilers are recommended to
have an inertia tank of 20l per kW.
Notes:
-
TA
the boiler can be used, with the application of a generic external control
(chronothermostat) or another type of control provided that it is voltage-free
(dry contact). Note: The external control normally comes with a manual. The
thermostat must have a 1 to 2°C hysteresis;
-
The parameter for operation of the room thermostat in this hydraulic scheme
is
A01= 03
;
-
The first activation has to be done manually on the display;
-
S1
boiler temperature probe;
-
P1
pump incorporated in the boiler;
-
P3
installation pump.
To connect the S2 probe of the inertia tank to the boiler, proceed as follows:
1.
The boiler must be in the Off position.
2.
Disconnect the boiler from the mains supply.
3.
Connect the S2 probe at the rear of the boiler.
4.
Reconnect the mains supply.
5.
The electronics will give an error (
Er56
) because it will have recognised the
changes in the hydraulic installation.
6.
Unlock the error and the electronic system will automatically recognise the
new configuration.
S1
P1
S2
P3
TA