Viessmann VITOCAL 222-G Fiche technique Page 104

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G Sight hose, Tyfocor drip container
(only with Vitocal 242)
H Three-way diverter valve (manual)
(only with Vitocal 242)
1. Open any non-return valves
installed on site.
2. Check the pre-charge pressure of
the diaphragm expansion vessel
(see page 106).
3. Thoroughly flush the on-site pipe-
work.
4. Fill the heating circuit via fill &
drain valve C with water; during
filling, check the system pressure
at pressure gauge D.
Minimum system pres-
sure
0.8 bar
Permissible operating
pressure
3.0 bar
5. Close fill & drain valve C.
6. Open a suitable air vent valve in
the heating circuit.
7. Switch ON the power.
8. Set the operating mode selector
(see page 123) to "9".
9. Start the equipment at the system
ON/OFF switch (see page 192).
10. Note
Pay attention to information con-
cerning control operation (from
page 123), select language if
necessary (see page 109, default
setting "German").
Start the commissioning program
for the heating circuit:
Menu item
&
"Device settings"
&
"Contractor level"
&
Enter the code for "Heating
contractors" (see page 142).
&
"Commissioning"
11.
!
Please note
To prevent equipment
damage,
check the flow and return
connections of the sec-
ondary heat pump circuit
for leaks (see page 93).
In case of leaks, immedi-
ately shut down the equip-
ment, drain the water and
check the seating of the
seal rings. Replace all seal
rings that may have
slipped.
Let the commissioning program
run until the equipment is fully
vented. For this, observe the sys-
tem pressure; should that drop
below 0.8 bar, top up with water.
12. Close the air vent valve.
13. Terminate the commissioning pro-
gram with key "BACK".
Further details regarding the individual steps (cont.)
104
Commissioning, inspection, maintenance
5592 969 GB
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