Vitosol 100-FM/200-FM Installation, Operating and Service
5786 604 - 02
6
Notes on Installation
Collector Location
Refer to the Vitosol System Design Guidelines,
for detailed information on the optimum
alignment and inclination of solar collectors.
Optimum alignment and inclination
The solar collector provides the highest solar yield
over an annual average when facing due south with an
inclination of approx. 30° to 45° from the horizontal
plane. However, the installation of a solar heating system
is still viable even when the installation deviates quite
significantly from the above (south-westerly to south-
easterly alignment or with an inclination of 25° to 55°
from the horizontal plane).
General Information
The entire solar heating system should be installed
in accordance with the accepted rules of technology,
observing all relevant accident prevention regulations.
Employ suitable safety measures to prevent falls, falling
objects and roof damage due to insufficient load bearing
capacity, e.g. by means of scaffolding, ladders, cable
ties
etc.
The collectors must be securely mounted so that the
mountings can withstand intense wind conditions.
Use only stainless steel screws and bolts when
fastening mounting brackets or frames.
Although the collectors glass surface is hail-resistant
Viessmann recommends users to include storm
coverage in their building insurance. Our warranty does
not cover storm related damage.
The collectors should, as far as possible, be oriented
towards the south. Solar system performance drops off
significantly if collectors face more than 50° off south.
The collectors should be mounted level, or with a slight
ascending slope towards the high point of the piping, so
that complete venting of air is assured.
An air vent valve (c/w shut-off valve) should be installed
at the highest point of the solar heating system.
Filling the solar heating system with Viessmann heat
transfer fluid “Tyfocor-HTL” is highly recommended.
Tyfocor-HTL is supplied pre-mixed and water must not
be
added.
Other heat transfer fluids may be suitable if they have
the same temperature range -31°F to 338°F (-35°C to
170°C) and are non-toxic.
In areas with extremely cold climate conditions, where
outdoor temperatures may drop below -31°F (-35°C),
the use of Tyfocor-HTL is not recommended.
Use a solar propylene glycol mixture with a higher
concentration of glycol that provides the level of
freeze protection required for the area of the collector
installation.
The piping inside and outside the building should be
insulated to avoid heat loss. Use only high temperature
rated pipe insulation. The plastic or metal jacketing
or other means of protecting the insulation should also
include UV protection.
CAUTION
Use only Viessmann supplied mounting clips and
mounting hardware. Never drill or screw directly into
collector side frames.
CAUTION
Pool water or potable water cannot be pumped directly
through the Vitosol collectors. Damage to collectors
caused by corrosion, freeze damage, or scaling will void
warranty.
