Starting The System; Unit; Required - Viessmann VITOSOL-F Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps
High flow operation, 40 l/(h·m
Number of Flow rate in l/min
collectors
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Vitosol 200-F, type 5DIA
Throughput 5 to 6 l/min

Starting the system

Close the air vent valve.
Checking the switching function of the solar control unit
Solar control unit installation and
service instructions
Checking heat transfer medium and replacing 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 pro-
tection down to −28 °C.
Monitor the operating condition of the
medium as part of the annual service of
the solar thermal system by the heating
contractor.
12
2
) Low flow operation, 15 l/(h·m
Number of
collectors
3 6
4.5 7
6 8
7.5 9
9.5 10
10.5 11
12.5 12
14 13
15.5 14
17 15
18.5 16
20 18
21.5 20
23.5
With the solar service case (acces-
sory), the pH value and frost protection
temperature can be checked.
In some cases the manufacturer of the
heat transfer medium can carry out a
laboratory test of the medium, subject to
arrangement.
(cont.)
Flow rate in l/min
Observe operating instructions of
installed components.
2
)
3.5
4
4.5
5
5.5
6.5
7
7.5
8
8.5
9
10.5
11.5