Frost Protection Function; Reverse Cooling Function; Interval Function - Viessmann VITOSOLIC 100 Installation And Service Instructions Manual

Minimum collector temperature limit
Setting parameters
KMN

Frost protection function

Enable this function only when using
water as heat transfer medium.
The solar circuit pump will be switched
ON to avoid collector damage, if the col-
lector temperature falls below the
"KFR" value.
The symbol "e" is displayed if this func-
tion is enabled and flashes if the solar
circuit pump is running.
Setting parameters
KFR

Reverse cooling function

Enable only in systems with flat-plate
collectors.
The "ORUE" function only makes sense
if the collector cooling function has been
enabled (see page 62).
The collector cooling function enables
the heating of the DHW cylinder to a
higher temperature than "S SL" (see
page 53).

Interval function

Activate the interval function in systems
where the collector temperature sensor
is not in an ideal location to prevent a
time delay in capturing the collector tem-
perature.
(cont.)
Delivered condition
1. Set "OKF" to "ON" (see page 45).
2. Select the "KFR" value.
Delivered condition
In the evening, the pump will continue to
run (symbol "È" flashes) until the DHW
cylinder has been cooled down via the
collector and the pipework to the set cyl-
inder temperature "S SL".
Set "ORUE" to "ON" (see page 45).
For this, the solar circuit pump is started
for 30 s when the collector temperature
rises by 2 K.
Set "ORK" to "ON" (see page 45).
Function description
Setting range
10 °C 10 – 90 °C
Setting range
−10 – +10 °C
4 °C
63