4.5
Alternatives for hydraulic connections
4.5.1.
Connection of the underfloor heating
1
Boiler
2
Expansion vessel
3
Stopcock
4
Regulator valve
5
Filling/drainage valve
6
Underfloor heating
7
Heating by radiators
The boiler can be connected directly to an underfloor heating circuit.
If using plastic ducting (for the underfloor heating for example), the
plastic tubes must be totally oxygen-tight according to standard DIN
4726/4729. If the synthetic ducting used in the installation does not
conform to these standards, it is advisable to hydraulically separate
the boiler circuit from the central heating circuit by installing a plate
heat exchanger.
Parameters
p"8
and
p"9
are used to modify the
pump settings.
4.5.2.
Connection of a solar hot water tank
1
Boiler
2
Tank
3
Solar collector
4
Pump
5
Flow limiter
6
Safety unit
7
Mixer valve
8
Solar DHW sensor SCU-S02
Boilers, of the heating and domestic hot water production type, are
suitable for reheating downstream from solar DHW tanks. A kit
(accessory) is available for the connection.
See the solar domestic hot water tank's technical notes for
more information concerning hydraulic connections.
T001535-C
1
2
3
7
5
6
4
T001534-C
1
2
3
4
5
8
6
7
4. Installation
Calenta 25s - 28c - 35s - 40c
26
040412 - 7600585-01
