Technical data

Hydronic Connections /
Appendix
25
p
Collector Supply and Return Piping
H For the piping connecting the
collectors to t he Solar Divicon
pumping station, Viessmann
recommends the use of commercial
copper pipe and bronze fittings, or
non-galvanized steel pipe. PEX or
other plastic pipes are not suitable for
solar collector supply and return
piping.
H Use only high temperature solder or
brazing material when connecting the
copper pipes in the collector piping.
The melting temperature should be
above 450 °F / 232 °C.
H When laying out the collector array,
ensure that the s y stem can “breathe”
properly. Do not route pipes above the
collector array.
Refer to the Vitosol System
Design Guidelines for
required flow rates and pipe
sizing parameters for
Vitosol-F collectors.
Solar collector
Solar-Divicon (pumping station)
Collecting tank
Expansion vessel
Solar manual filling pump
System fill manifold valve
Screw-in elbow, comes with
sensor well
Dual-mode DHW tank
I
Tank temperature sensor
Air separator
Solar control unit
Flexible connection pipe (optional)
Collector temperature sensor
Fast air vent, c/w shutoff v alv e
*1
R Return to collector
S Supply from collector
*1
Install at least one air vent valve at the
highest point of the system.
Refer to the Vitosol System
Design Guidelines for more
information on other
installation examples and
system types.
5285 710 v2.0
Do not use galvanized pipes,
galvanized fittings or graphitized
gaskets, or any type of plastic pipes.
CAUTION
Sample System Layout
S
R
TT
T
I
DCW
DHW
The domestic hot water t emperature
must be limited to 140°F / 60°C by
installing a mixing device, e.g. a
thermostatic anti-scald mixing v alve.
WARNING