Viessmann VITODENS 050-W Installation And Service Instructions Manual page 55

(cont.)
!
Please note
Residual water will escape when
the boiler or one of the following
components is fitted or
removed:
■ Water-filled pipework
■ Circulation pumps
■ Plate heat exchanger
■ Components fitted in the heat-
ing water or DHW circuit
Troubleshooting
Water ingress can result in dam-
age to other components.
Protect the following compo-
nents against ingress of water:
■ Control unit (in particular in
the service position)
■ Electrical components
■ Plug-in connections
■ Cables and leads
55