Viessmann Vitocal 222-A, Инструкция по установке и обслуживанию

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10. If necessary, vent the indirect coil in the DHW cyl-
inder using air vent valve
F
for the DHW cylinder.
11. Close secondary circuit air vent valve
C
.
12. Turn the 3-way diverter valve clockwise to the
"AUTO" position.
Filling and venting the DHW cylinder on the DHW side
B
Fig. 52
1. The lever on valve
B
must be in the "left" position.
2. Open the on-site DHW supply and a DHW draw-off
point.
3. Once air stops coming out of the DHW draw-off
point, the loading cylinder is completely filled.
Checking the expansion vessel and heating circuit pressure
Observe engineering information.
Heat pump technical guide
Commissioning, inspection, maintenance
Filling and venting on the secondary side
(cont.)
5831412