Installation and service instructions
for contractors
VIESMANN
Vitoladens 300-W
Type J3HA
, 10.3 to 23.6 kW
Wall mounted oil condensing boiler
for the combustion of fuel oil to DIN 51603-1 EL (low sulphur)
For applicability, see the last page
VITOLADENS 300-W
5686 293 GB
7/2017
Please keep safe.