Caleffi 269 - Manual

Circulation units
for solar thermal systems, with solar regulator
DeltaSol® C+
28199
268-269 series
Function
Circulation units are used on the primary circuit of
solar thermal systems to control the temperature
in the hot water storage. The pump inside the
units is activated by the signal arriving from the
regulator. Moreover, safety and functional devices
for optimum control of the circuit are fitted in the
units.
They are available with flow and return connection
or with return connection only.
Some versions are also complete with the digital
regulator DeltaSol ® C+ for solar thermal systems,
suitable for the operation and control of 9 different
types of solar thermal systems.
1
INDEX
Function
Product range
Technical specifications
Characteristic components
Installation
Filling the system
Commissioning
1
2
3
4
5
6
Components 7
Application diagrams
8
INSTALLATION AND COMMISSIONING MANUAL