Viessmann VITODENS 050-W Installation And Service Instructions Manual page 60

Troubleshooting
(cont.)
!
Please note
Residual water will escape when
the boiler or one of the following
components is fitted or
removed:
■ Water-filled pipework
■ Heat exchanger
■ Circulation pumps
■ Plate heat exchanger
■ Components fitted in the heat-
ing water or DHW circuit.
60
Water ingress can result in dam-
age to other components.
Protect the following compo-
nents against ingress of water:
■ Control unit components
(especially in the service posi-
tion)
■ Electrical components
■ Plug-in connections
■ Cables and leads