3
EN
709.75 | 07.50
The following display appears:
The holiday symbol is displayed
7.6 Anti-freeze function
If the anti-freeze function is activated, the controller
switches the pump on as soon as the collector tem-
perature T1 falls below +5 °C. The heat transfer fluid
is then pumped through the collector in an attempt
to prevented the system from freezing. If the collector
reaches a temperature of +7 °C, the pump is switched
off again.
CAUTION
The solar energy system can freeze despite the acti-
vated anti-freeze function!
During a power outage, the anti-freeze function does
not operate.
During long-term periods of frost (due to restricted
water tank heat storage).
If collectors are mounted in locations exposed to wind.
It is recommended to generally use heat transfer fluid
with anti-freeze for solar energy systems.
Standard anti-freeze heat transfer fluids for solar
energy systems also contain an additional corrosion
inhibitor.
The following display appears:
The anti-freeze symbol is displayed
•
•
°
C
max
max
T1
D
T1
T1
T3
T2
°C °F
!
°
C
max
max
T1
D
T1
T1
T3
T2
°C °F
!
Summary of Contents for tr 0301
Page 38: ...709752...