Viessmann CHA, Инструкции по обслуживанию для подрядчиков

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8
1. Fill the DHW cylinder on the DHW side.
Note
If the DHW cylinder is pressurised, tighten the
flange cover with a torque of 25 Nm.
2. Check the fittings on the heating water and DHW
sides for leaks and tighten if required.
3. Check the function of the safety valves according
to the manufacturer's instructions.
Shutting down the system
Checking the safety valve function
Checking the anode earth current with an anode tester
E
D
B A
C
Fig. 1
1. Remove front panel
A
and flange insulation
B
.
2. Remove thermometer sensor
C
(if available).
3. Remove earth cable
D
from tab
E
.
4. Connect tester in series between earth cable
D
and tab
E
.
■
Current
>
0.3 mA: Protective magnesium anode
is OK
■
Current < 0.3 mA or no current at all: Inspect the
protective magnesium anode visually (see
page 9).
Cleaning the inside of the DHW cylinder
Danger
Unchecked leakage of DHW or heating water
can result in scalding and structural damage.
Only open the DHW and heating water connec-
tions after the DHW cylinder has been depres-
surised.
Commissioning, inspection, maintenance
Filling the DHW cylinder
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