Setting The Maximum Heating Output - Viessmann Vitosorp 200-F Installation Instructions For Contractors

Venting the secondary circuit
Venting the secondary circuit
A
Fig. 31
1. Close the gas shut-off valve and switch the control
unit ON.
2. Check whether the air vent screw in quick-action
air vent valve of the secondary circuit is open.
A
3. Open flush & vent valve
4. Activate the venting program (see next chapter).
Note
For function and sequence of the venting program,
see page 145.

Setting the maximum heating output

A limit can be set on the maximum heating output for
heating operation. The limit is set via the modulation
range. The upper limit of the max. adjustable heating
output is set by the coding card.
Note
A system pressure of at least 2 bar (0.2 MPa) must be
present in the process circuit before the max. heating
output can be set.
Service menu
1. Press OK and simultaneously for approx. 4 s.
å
2. "System functions"
Service mode is being prepared, which can take
approx. 10 min.
Checking all connections on the heating and cylinder sides for leaks
(cont.)
B
B .
Commissioning, inspection, maintenance
5. Close flush & vent valve
6. Check the system pressure.
7. Open the gas shut-off valve.
Note
If flow noises or faults occur during operation, the heat-
ing system can be vented again by means of the filling
and venting program.
Enabling the venting function for the secondary
circuit
Note
A pressure of at least 2 bar (0.2 MPa) must be present
in the process circuit before the venting function can
be started.
Service menu
1. Press OK and simultaneously for approx. 4 s.
å
2. "System functions"
Service mode is being prepared, which can take
approx. 10 min
3. "Vent the secondary circuit"
Venting function is enabled.
4. End the venting function:
Press OK or .
ä
3. "Max. output"
4. "Change?" Select "Yes".
A value is shown on the display (e.g. "65"). In the
delivered condition, this value represents 100 % of
rated heating output.
5. Set the required value.
.
B
45