1. Connect the drain hose to valve A
and connect with a drain outlet.
2. Turn toggle on the shut-off valve B
to the front.
3. Turn toggle on the shut-off valve C
to the front.
4. Turn toggle on the valve A to the
front and drain the boiler if neces-
sary.
Turn toggle back down again.
Hinweis
Residual water left in the boiler.
5. Turn toggle on the shut-off valve B
to the front.
Hinweis
Filling up on the primary side see
page 48.
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