Viessmann VITOSOL 200-F Installation Instructions Manual page 51

Installation
(cont.)
1. Position pipes so that complete
ventilation is guaranteed. We
recommend the installation of an
air vent valve with shut-off facility
at the highest point of the system.
Install an air separator at an acces-
sible point in the pipework (see the
following diagram).
2. Equip systems to EN 12975 with
expansion vessel, safety valve and
circulation pump.
3. The expansion vessel must be
approved to DIN 4807 [or local reg-
ulations] and must be installed with
a thermal insulating loop. The dia-
phragms and seals of the expan-
sion vessel and the safety valve
must be suitable for the heat trans-
fer medium.
For the calculation of the
inlet pressure, see the
"Vitosol" service instruc-
tions.
4. When operating without Solar-Divi-
con, only use safety valves
designed for 120 °C, a max. pres-
sure of 6 bar, which carry the "S"
(Solar) designation.
5. Make all connections pressure and
temperature-resistant (observe the
max. idle temperature of the collec-
tor).
51