Start-up - initial settings and functions
8.1.6
Terminology used
The terms related to this unit are shown in the table below
Parameter
AHS
IBH
P_i
P_o
P_c
P_d
P_s
Pe
SV1
SV2
SV3
T1
T2
T3
T4
T5
T1S
Ta
Tbt1
TBH
Th
Tp
Tsolar
Tw2
TWin
TWout
Unit pump or Zone 1 pump (for double zone systems)
Secondary circuit pump (or Zone 1 pump for double zone systems)
Zone 2 pump (for double zone systems)
Evaporation pressure in Cooling mode or condensation pressure in Heating mode
3-way diverter valve for direct double zone systems
Water supply temperature from additional heating source (with IBH heater or AHS boiler)
Refrigerant temperature entering the user side exchanger (plate heat exchanger) in
Cooling mode (or leaving in Heating mode)
Refrigerant temperature leaving the source exchanger (coil) in Cooling mode (or entering
Room air temperature, detected by the probe in the HMI
Temperature of the upper part of the inertial storage tank
Backup electric heater for DHW (Domestic Hot Water) storage tank
Compressor suction refrigerant temperature
Compressor discharge refrigerant temperature
Water temperature in the solar thermal circuit
Water supply temperature for the mixed zone (for double zone systems)
Description
Backup boiler
Backup electric heater
DHW recirculation pump
Solar circuit pump
3-way circuit/DHW diverter valve
3-way mixing valve for mixed circuit
in Heating mode)
Outdoor air temperature
DHW tank temperature
Water supply temperature setpoint
Unit water return temperature
Unit water supply temperature
77
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