Checking The Mixer For Ease Of Operation And Leaks; Instructing The System User; Operating And Service Documents - Viessmann Vitocrossal 200 Service Instructions For Contractors

Further details regarding the individual steps
2. If the pre-charge pressure of the
expansion vessel is lower than the
static system pressure, recharge with
nitrogen until the pre-charge pres-
sure is 0.1 to 0.2 bar higher.

Checking the mixer for ease of operation and leaks

1. Remove the motorised lever from the
mixer handle.
2. Check the mixer for ease of opera-
tion.

Instructing the system user

The installer should instruct the user in
the operation of the system.

Operating and service documents

1. Complete and detach the customer
registration card:
■ Hand system users their section for
safekeeping.
■ Retain the heating contractor's
section.
2. File all parts lists, operating and serv-
ice instructions in the folder and hand
this over to the system user.
The installation instructions are no
longer required after the installation is
complete and therefore do not need
to be retained.
Commissioning, inspection, maintenance
3. Top up with water until the charge
pressure is 0.1 to 0.2 bar higher than
the pre-charge pressure of the
expansion vessel when the system
has cooled down.
Permiss. operating pressure: 6 bar
3. Check the mixer for leaks. Replace
the O-ring gaskets if the mixer is leak-
ing.
4. Snap the motorised lever into place.
(cont.)
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