Checking The Function Of The Safety Equipment; Checking Electrical Connections; Filling And Flushing The Solar Thermal System And Checking For Leaks - Viessmann Vitosol 200-T Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps

Checking the function of the safety equipment

Check the safety valve:
■ Response pressure
■ Correct installation, with discharge
pipe

Checking electrical connections

Check the tightness of the electrical
plug-in connectors and cable grom-
mets; check cables for damage.
Filling and flushing the solar thermal system and checking for
leaks
!
Please note
Filling and commissioning the
solar thermal system without first
safeguarding heat transfer
results in thermal stress.
Cover the collectors and keep
covered until heat transfer has
been regulated.
8
(cont.)
■ Accessories for flushing and filling the
solar thermal system:
– Flushing and filling facility (filling
trolley and filling station)
These contain a high speed pump
with a high pump rate, a filter and a
container for heat transfer medium.
– Filling valve, consisting of shut-off
valve, drain valve and fill valve.
■ Flush solar thermal system with heat
transfer medium. Otherwise there is a
risk that residual water from flushing
may become mixed with the heat
transfer medium. This would alter the
properties of the heat transfer
medium.
■ Flush soldered copper pipes thor-
oughly. Any residual scale may com-
promise the operation of the solar ther-
mal system.