41
3.
Connect tester (up to 5 mA) in series between tab
C
and earth cable
B
.
■
If the current measures > 0.3 mA the magnesium
anode is OK.
■
If the current measures < 0.3 mA or if there is no
current at all, inspect the magnesium anode visu-
ally (see page 42).
Draining the boiler on the DHW side
Fig. 34
1.
Connect the hose to the drain valve and route it into
a suitable container or drain outlet.
Note
Ensure adequate ventilation in the DHW pipework.
2.
Turn drain valve from lever position
A
(operational)
to lever position
B
or
C
as required.
■
Lever position
B
: Drain drinking water circuit in
appliance
excluding
DHW cylinder via the cold
water connection.
■
Lever position
C
: Drain drinking water circuit in
appliance
and
DHW cylinder via the DHW con-
nection. The cold water connection remains filled.
Cleaning the loading cylinder
Note
According to EN 806, a visual inspection and (if neces-
sary) cleaning must be carried out no later than 2
years after commissioning, and as required thereafter.
1.
8x
3.
2.
Fig. 35
1.
Drain the loading cylinder.
2.
Remove flange cover
A
.
Commissioning, inspection, maintenance
Checking the anode earth current with an anode…
(cont.)
5773 216 GB
Summary of Contents for B2TA
Page 101: ...101 Parts lists Overview of assemblies 5773 216 GB Components ...
Page 107: ...107 Parts lists Hydraulics 5773 216 GB Components ...
Page 118: ...118 0004 0002 0005 0006 0001 0003 Fig 77 Parts lists Miscellaneous 5773 216 GB Components ...
Page 142: ...142 5773 216 GB ...
Page 143: ...143 5773 216 GB ...
