Note
If the minimum return temperature has been set too low, there is more compres-
sor wear due to the increase in the number of low-pressure shutdowns.
If the minimum return temperature is set too high, the proportion of electrical
heating increases and the degree of efficiency drops. This problem occurs pri-
marily when heating up a cold building.
Access
&
"
Device settings
"
&
"
Programming
"
&
"
Heat pump
"
&
"Min. return temp."
(
1
/
!
)
Standard setting
5 °C
Setting range
1 to 40 °C
Hysteresis T primary/min. T primary in
This setting determines the control range for starting and stopping the heat
pump. The shutdown point of the heat pump is determined by the minimum
brine entry temperature ("
Min. T primary in
").
A
Brine inlet temperature
B
"
Min. T primary in
"
C
"
Hysteresis T brine
"
D
Heat pump ON
E
Heat pump OFF
Access
&
"
Device settings
"
&
"
Programming
"
&
"
Heat pump
"
&
"Hyst. T primary"
or
"Min. T primary in"
(
1
/
!
)
Standard setting
Setting range
"
Hyst. T primary
"
5 K
1 to 20 K
"
Min. T primary in
"
-4 °C
-10 to +20 °C
Minimum return temperature
(cont.)
138
Heat pump control settings
55
92
968
GB
Summary of Contents for VITOCAL 200-G
Page 8: ...Certificates Declaration of conformity 201 Keyword index 202 Index cont 8 Index 5592 968 GB ...
Page 122: ...Main menu Information Menu structure overview information 122 Control settings 5592 968 GB ...
Page 187: ...Parts lists cont 187 Parts lists 5592 968 GB Service ...
Page 188: ...Parts lists cont 188 Parts lists 5592 968 GB ...
Page 189: ...Parts lists cont 189 Parts lists 5592 968 GB Service ...
Page 206: ...206 5592 968 GB ...
Page 207: ...207 5592 968 GB ...
