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5.3 Hydraulic installation
The configuration is defined by the System parameter #4: INST (See Chap 7.1 System parameters setting) and induces a
different usage of the ouputs:
5.3.1
Single circuit hydraulic installation: Parameter #4 INST=Act
Security Contact thermostat
Optionnal Return sensor (Used when no RF thermostat is installed)
Supply water sensor
Main pump
Mixing 3 way valve
Boiler control
1 2
M
3 way valve signal (On in cooling mode)
Parameter #4 INST=Act Heating Mode Cooling mode
Heating demand output driving the
boiler or Stage 2 heating (if PE=yes)
Active (Contact closed) when the pump
1 is active or when there is a domestic
hot water demand or PE=Yes with Ext
Temp < PE t
Always OFF (Contact opened)
Cooling demand output (Pump 2
output) driving a 3 way On/Off valve to
choose between Heating or cooling
water
Always OFF (Contact opened)-> HOT Always ON (Contact closed)->COLD
Pump 1 output with wired TH1
thermostat
Active if the thermostat is in heating
demand
Active if the thermostat is in cooling
demand
Pump 1 output with RF TH1 thermostat Active if the thermostat is in heating
demand
Active if the thermostat is in cooling
demand
Paramter #4 INST
Act
SEP
2P.1 or 2P.2
Output Directive valve Cooling demand Pump 2
Paramter #4 INST
Act
SEP
2P.1 or 2P.2
Output Heating demand
or Stage 2 heating (if
PE=yes)
Heating demand
or Stage 2 heating (if
PE=yes)
Heating or cooling demand
or Stage 2 heating (if
PE=yes)
Paramter #4 INST
Act
SEP
2P.1 or 2P.2
Output
Pump 1
Pump 1
Pump 1
Pump2/Cooling ouput :
Heating ouput :
Pump1 output :
6


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