7.10.3
ADDITIONAL HEATING SOURCE menu
MENU > FOR SERVICEMAN > OTHER HEATING SOURCE > ADDITIONAL
HEATING SOURCE
To enter the
ADDITIONAL HEATING SOURCE
menu, navigate to the
OTHER
HEATING SOURCE
menu, scroll to
YES
on the
ADDITIONAL HEATING
SOURCE
line and press
OK
.
T4_AHS_ON
sets the ambient temperature below which the additional heating source is used. If the ambient temperature
is above
T4_ASH_ON
, the additional heating source is not used. The relationship between operation of the additional
heating source and the ambient is shown in the picture below.
dT1_ASH_ON
sets the temperature difference between the heat pump’s leaving water set temperature (T1S) and the heat
pump’s leaving water temperature (T1) above which the additional heating source is on. When T1S - T1 ≥ dT1_AHS_ON the
additional heating source is on.
dT1_ASH_OFF
sets the temperature difference between the heat pump’s leaving water set temperature (T1S) and the heat
pump’s leaving water temperature (T1) below which the additional heating source is off. When T1 - T1S ≥ dT1_AHS_OFF
the additional heating source is off. Note:
dT1_ASH_OFF
can take values in the range -5°C to 0°C.
t_ASH_DELAY
sets the delay between the compressor starting and the additional heating source being turned on.
Figure 3-7.34: Additional heating source delay
Abreviations:
AHS: Additional heating source
T1: Heat pump leaving water temperature
T1S: Heat pump leaving water set temperature
T4: Outdoor ambient temperature
Figure 3-7.32:
ADDITIONAL HEATING SORUCE menu
Figure 3-7.33: T4_AHS_ON
Abreviations:
AHS:
Additional heating source
T4: Outdoor ambient temperature
75
