Checking And Replacing The Heat Transfer Medium If Required - Viessmann VITOSOL-F Service Instructions Manual

Commissioning, inspection, maintenance

Checking and replacing the heat transfer medium if required

The heat transfer medium provided is a liquid based
■
on 1,2-propylene glycol with a pH value of 9.0 to
10.5 and frost protection down to:
– 28 °C, Tyfocor LS
−
– 12 °C, Mediterráneo
−
47 °C, Arctic
– −
Monitor the operating condition of the medium as
■
part of the annual service of the solar thermal system
by the heating contractor.
■ The pH value and frost protection temperature can
be checked with the solar service case (accesso-
ries).
Solar service case operating instructions
In some cases the manufacturer of the heat transfer
medium can carry out a laboratory test of the
medium, subject to arrangement.
■ Manufacturer:
TYFOROP CHEMIE GmbH
Anton-Rée-Weg 7
D - 20537 Hamburg
Email: info@tyfo.de
Internet: www.tyfo.de
1. Check the pH value of the heat transfer medium
using the pH strip in the solar service case.
The colour of the pH strip indicates the approxi-
mate value. If the value is below 7.5, replace the
heat transfer medium.
Information on replacing the heat transfer
medium
The heat transfer medium can be mixed with Tyfo-
cor G-LS.
Never mix with water or third party media.
2. Check the frost protection temperature of the heat
transfer medium with an antifreeze tester or the
manual refractometer in the solar service case.
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