Commissioning The System; Checking The Switching Function Of The Solar Control Unit; Checking And Replacing The Heat Transfer Medium If Required - Viessmann Vitosol 200-T Service Instructions Manual

Further details regarding the individual steps
Flow rates to be set
Specific flow rate 25 l/(h.m
Collector area in
m 2
1.26
1.51
3.03
4.54
6.06
7.56
9.07
10.58
12.10
13.61

Commissioning the system

Note
For Solar-Divicon, do this at air separa-
tor H.

Checking the switching function of the solar control unit

Solar control unit installation and
service instructions

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.
■ Have the condition of the medium
checked as part of the annual service
of the solar thermal system by the
heating contractor.
2
)
Flow rate in
l/min
0.5
0.6
1.3
1.9
2.5
3.1
3.8
4.4
5.0
5.7
Commissioning, inspection, maintenance
(cont.)
Observe operating instructions of
installed components.
■ The pH value and frost protection tem-
perature can be checked with the
solar service case (accessories).
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:
13