Viessmann VITOCAL 300, Installation And Service Instructions Manual

Page: 114 / 160

For function, see page 110.
Access
& " System settings "
& " Program "
& " Heating circuit "
& " Heating circuit 1/2 "
& "NC mixer scan band "
(
%
/
5
)
or
"NC mixer dead zone"
(
=
/
0
)
Standard setting Setting range
" NC mixer active zone " 4.0 K 2.0 to 40 K
" NC mixer dead zone " 1.0 K 0.5 to 3.0 K
Cooling mixer runtime
Setting of the time required by the ser-
vomotor of the cooling mixer for a
complete changeover from one oper-
ating state into another (90 degree
movement).
Runtimes that are too short, can lead
to the cooling mixer "Cycling".
Access
&
" System settings "
&
" Program "
& " Heating circuit "
& " Heating circuit 1/2 "
& "Op. time cool. mixer "
(
m
/
l
)
Standard setting 0:10 min
Setting range 0:05 to
4:15 min
Active zone/dead zone natural cooling mixer
114
Heating circuit control settings
55
92
901
GB