Technical data

Appendix
26
System Installation
Please refer to the Vitosol
”System Design Guidelines”
for supplementary notes on
installation examples and
system types.
H The connecting lines must be pressure
and temperature-resistant (observe
the max. shutdown t emperature of
the collector).
H To guarantee the s atis f actory
operation of the solar heating system,
install the pipes so that complete air
venting is assured.
H At least one fast-acting air vent with
shut-off valve must be installed at the
highest point of the system.
Install an air separator at an acces-
sible point in the piping (e.g. in the
flow of the solar circuit, upstream of
the inlet to the indirect coil of the
domestic hot water t ank).
H Thesystemmustbeequippedwithan
expansion tank, safety valve and
circulation pump.
H The Solar-Divicon is equipped with a
safety valve designed for max. 87
psig / 6 bar.
H Use only a diaphragm expansion tank
that is suitable f or the application a s a
solar expansion tank.
H The expansion tank must be approved
for use in a solar heating system and
must be connected v ia a heat
insulating loop.
The diaphragms and seals of the
expansion tank and the safety valve
must be suitable for the heat transfer
medium.
Please refer to the ”Service
Instructions” in order to
calculate the inlet pressure
of the diaphragm expansion
vessel.
H Before filling sy stem with s olar heat
transfer fluid, thoroughly flush and
clean piping system to remove all dirt,
oils, flux and solder residue.
H Fill t he solar heating sy stem with
Viessmann heat transfer medium
”Tyfocor-HTL”. The “Tyfocor-HTL” is
supplied as a premixed glycol/water
solution and must not be mixed. The
blow-off and discharge pipes must be
runtoanopencontainercapableof
accommodating the total capacity of
the collectors.
H Prior to inst alling pipe insulation, run a
stranded and protected 18/2 AWG
low voltage sensor wire from the solar
controller to the collector sensor well.
Ensure all wire connections are
soldered and sealed with heat shrink
sleeve connectors (see illustration
below). Cover all wire and
connections with insulation and
jacket.
*1
E.g. HT/Armaflex (temperature resistant up to 175 ºC) supplie d by Arm strong Ins ulation Pr oducts
5285 710 v2.0
Use only red bronze fittings, brass
fittings and copper piping.
Do not use galvanized pipes,
galvanized fittings, graphitized
gaskets or any type of plastic pipe.
CAUTION
Do not carry out any soldering work
at or near the collector.
CAUTION
Components used must be resistant
to the heat transfer medium.
Insulation of external piping must be
resistant to temperature
*1
,UV
radiation and to destruction by birds
(e.g. through the use of metal
sheathing).
CAUTION
Twisted and soldered
Heat s hrink sleeve
Heat lightly
Source: CANSIA