Filling The Refrigerant Lines And Internal Device With Refrigerant; Checking The Refrigerant Lines For Leaks - Viessmann Vitoclima 300-S Service Instructions For Contractors

Further details regarding the individual steps
5. Close the valve between pressure
gauge set D and vacuum pump
B. Stop the vacuum pump and
wait 5 min.
Should the needle not move as
described, that would indicate a
leak.
Remove the leak and repeat the
process.
Filling the refrigerant lines and internal device with refriger-
ant
Note
The external unit is already pre-filled with refrigerant.
1. Remove the protective valve caps
from the valves of the external unit.
2. Open the valve locks with Allen
keys.

Checking the refrigerant lines for leaks

Danger
Prevent an unregulated escape
of R 410A in sealed rooms;
ensure adequate ventilation.
Always observe all relevant
regulations and directives
regarding the handling of
refrigerant.
Commissioning, inspection, maintenance
(cont.)
6. Remove filling hoses C and E
from service valves E, then first fit
and subsequently tighten the pro-
tective caps with 11 to 13 Nm.
3. Fit and tighten the protective valve
caps with 11 to 13 Nm.
Note
In this refrigerant circuit the refriger-
ant R 410A is used. R 410A is a non-
toxic gas that displaces air and is
composed of two constituents.
R 32 (CH2F2): 60 % total proportion
R 125 (CF3CHF2): 40 % total pro-
portion
The above specifications are subject
to modification without prior notice.
Check all flanged connections of the
refrigerant lines between the internal
device and the external unit for refrig-
erant leaks.
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