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Electrical
Boiler Wiring
CAUTION
The Viessmann supplied field wiring diagram is not a
complete system drawing. It is the installer's responsibility
to assure that the control is suitable for the respective
installation, and all necessary safety equipment is installed.
CAUTION
Any alteration of the control cabinet will void the warranty.
Lines arranged in metal pipe with
minimum distance of 6 in. (150 mm)
to the base. Use support with cable
routing for light barrier.
No support on base.
48
CAUTION
The information about wire type, wire number and wire
gauge made in the wiring diagrams is not obligatory. The
final decision of these settings has to be made by the
executing installation company taking into consideration
the local codes and regulations.
Screw cable channel (metal design) onto the footplate
on top of the boiler with minimum distance of b in. (10 mm).
Fasten cable channel (metal design) on casing
with minimum distance of c in. (20 mm).
Cable channel (metal design) over entire
width of boiler: fastening on the bottom
of the boiler jacket (it is not water-bearing).
Mount cable channel (metal design) with minimum distance of
7c in. (200 mm) to the in-feed auger: no support on the in-feed
auger.
Arrange lines in protective cable hose with sufficient leeway
to open and close the door (mind the door stop).
Vitoflex 300-RF Installation & Operating
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