Checking The Switching Function Of The Solar Control Unit; Shutting Down The System; Checking The Frost Protection Temperature And The Ph Value Of The Heat Transfer Medium; Checking The Thermal Insulation Of The Pipes - Viessmann Vitosol 200-T Service Instructions For Contractors

Commissioning, inspection, maintenance
Further details regarding the individual steps

Checking the switching function of the solar control unit

Solar control unit installation and
service instructions

Shutting down the system

!
Please note
To prevent equipment damage, cover the collectors before any work on the
components of the solar thermal system begins.
Mixing the heat transfer medium with water reduces the frost and corrosion
protection. Only flush the system with the specified heat transfer medium.
Never mix "Tyfocor LS" with other heat transfer media.
Electrically isolate the system (e.g. at a
separate MCB/fuse or the main isolator)
and safeguard against unauthorised
reconnection.
Checking the frost protection temperature and the pH value of
the heat transfer medium
Check the frost protection temperature
of the "Tyfocor LS" heat transfer medium
with a Viessmann antifreeze tester or the
manual refractometer in the solar service
case (accessory).

Checking the thermal insulation of the pipes

Check the thermal insulation of the pipes
for positioning and damage and adjust if
required.
Replace all faulty parts.
10
(cont.)
Check the pH value using the pH strip in
the solar service case (accessory).
Note
The thermal insulation of external pipes
must be resistant to temperature and UV
rays. The insulation must be protected
against attack from small animals and
birds (e.g. metal sheath).