Midea MHC-V16W/D2RN8-B - OTHER HEATING SOURCE Menu; OTHER HEATING SOURCE Menu Overview; T4_Ahs_On; T4_Ibh_On

M thermal Mono
202005 93
Part 3 - Installation and Field Settings
7.10 OTHER HEATING SOURCE Menu
7.10.1 OTHER HEATING SOURCE menu overview
MENU > FOR SERVICEMAN > OTHER HEATING SOURCE
Figure 3-7.26: OTHER HEATING SOURCE menu
In OTHER HEATING SOURCE the following parameters should be set. Backup electric heater is optional.
dT1_IBH_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 backup electric heater heating element(s) are on. When T1S - T1 ≥
dT1_IBH_ON the backup electric heater is on (on models where the backup electric heater has a simple on/off control
function).
t_IBH_DELAY sets the delay between the compressor starting and the backup electric heater being turned on.
T4_IBH_ON sets the ambient temperature below which the
backup electric heater is used. If the ambient temperature is
above T4_IBH_ON, the backup electric heater is not used. The
relationship between operation of the backup heater and the
ambient is shown in Figure 3-7.22.
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.
t_ASH_DELAY sets the delay between the compressor starting and the additional heating source being turned on.
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.
IBH LOCATE means IBH is installed for pipe heating.
P_IBH1, P_IBH2 set heating capacity of IBH and P_TBH sets heating capacity of TBH, which are used for energy
consumption statistics.
30MIN
-5°C
5°C
30MIN
5°C
7 OTHER HEATING SOURCE
7.1 dT1_IBH_ON
7.2 t_IBH_DELAY
7.3 T4_IBH_ON
7.4 dT1_AHS_ON
7.5 t_AHS_DELAY
ADJUST
1/2
Figure 3-7.27: T4_IBH_ON
Abreviations:
T4: Outdoor ambient temperature
IBH: Backup electric heater
Figure 3-7.28: T4_AHS_ON
Abreviations:
AHS: Additional heating source
T4: Outdoor ambient temperature
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