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Vitosol 100-FM/200-FM Installation, Operating and Service
System Installation
The supply and return lines must be pressure and
temperature-resistant (observe the max. shutdown
temperature of the collector).
To guarantee the satisfactory operation of the solar
heating system, install the pipes so that complete air
venting is assured.
CAUTION
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
Never step, lean or place objects on the collectors.
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 in the flow of the solar circuit,
upstream of the inlet to the indirect coil of the
domestic hot water tank. The Solar-Divicon comes
with an air separator (factory installed) in the flow line
going to the tank.
Use only high temperature solder or brazing material
when connecting copper lines in the solar circuit or
join with press fittings.
Some soft solders can be weakened, particularly near
the collectors, due to the high temperatures that occur
there. Metal seal connections, locking ring fittings or
Viessmann push-fit connections with double O-rings
are the most suitable.
Should alternative seals be used, such as flat gaskets,
their manufacturer must give an assurance of
their adequate resistance to glycol, pressure and
temperature.
Make all connections pressure and temperature
resistant (observe the maximum stagnation
temperature of the collector).
Never use:
– Teflon (inadequate glycol resistance)
– Hemp connections (insufficiently gas-tight)
The system must be equipped with an expansion
tank, safety valve and circulation pump.
The Solar-Divicon is equipped with a safety valve
designed for max. 87 psig (6 bar).
Additional Installation Information
Use only a diaphragm expansion tank that is suitable
for the application as a solar expansion tank.
The expansion tank must be approved for use in
a solar heating system and must be connected via
a heat insulating loop.
The diaphragms and seals of the expansion tank
and safety valve must be suitable for the heat
transfer medium.
For operation without a Solar-Divicon, use only
safety valves that meet the following conditions:
– Designed for 248°F (120°C) and up to 87 psi (6 bar)
– Letter ID "S" (solar) in the component identification
Before filling system with solar heat transfer fluid,
thoroughly flush and clean piping system to remove
all dirt, oils, flux and solder residue.
Fill the solar heating system with Viessmann heat
transfer medium "Tyfocor-HTL" or suitable fluid as
described on page 6. The "Tyfocor-HTL" is supplied
as a premixed glycol/water solution and must not be
mixed. The blow-off and discharge pipes must be run
to an open container capable of accommodating the
total fluid capacity of the collectors.
CAUTION
Components used must be resistant to the heat transfer
medium. Insulation of external piping must be resistant
to temperature, UV radiation and to destruction by birds
(e.g. through the use of metal sheathing).
Prior to installing pipe insulation, run a stranded
twisted pair (shielded) 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 protective jacketing.
Twisted and soldered
with heat shrink sleeve
33
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