Phase Monitor - Viessmann Vitocal 300-G Installation And Service Instructions Manual

Installation sequence
Power supply
(cont.)
1. Separating the smaller cover
panel C from the contact
shield A by breaking along the
perforation E.
2. Fit the contact shield A using the
mounting holes B in front of the
mains terminals.

Phase monitor

The phase monitor is used to monitor the mains power supply to the compres-
sor. Different versions may be used.
The following different mains supplies
(if adjustable) are permissible in the
delivered condition:
Over/undervoltage
Phase asymmetry
Switching delay
The phase monitor switches off
(switching contact opens) if these tol-
erances are exceeded.
The phase monitor automatically re-
enables the power supply if the values
fall back to within the specified toler-
ance range.
Remove the cause if the relay has
responded. The relay does not need
to be reset.
98
3. Push separated cover panel C
with both mounting holes over the 2
studs and secure it on the studs.
4. Guide the seal wire through
holes D in both studs.
15 %
15 %
4 s