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Control function
(2) Thermo ON/OFF by request of water outlet temperature on Water Cycle 1 and Water Cycle 2 when [O_mode(heating)]
is set as [ON] and no room thermostats is available.
In this situation, Water Cycle (Cycle 1 or Cycle 2) can operate independently without Room thermostats by request of water
outlet temperature.
● Space heating is Thermo ON when any of the following conditions is fullled.
- [Tow] ≤ [Ttwo_Cycle 1] -3°C (Cycle 1 Thermo ON).
- [Tow] ≤ [Ttwo_Cycle 2] -3°C (Cycle 2 Thermo ON).
Then the heat pump and other heat source will be operated to meet demand. The heat pump and other heat source will be
operated to achieve the Maximum value of Target outlet water temperature.
● Space heating is Thermo OFF when all of the following conditions is fullled.
- [Tow] ≥ [Ttwo_Cycle 1] +4°C (Cycle 1 Thermo OFF)
- [Tow] ≥ [Ttwo_Cycle 1] +4°C (Cycle 1 Thermo OFF)
Then the heat pump and other heat source will stop operating.
10.2.2.3
Thermo ON/OFF and capacity control
Space heating is operated by Water Cycle 1 or combination of Water Cycle 1 and Water Cycle 2. Space heating is
demanded by request of water outlet temperature on Water Cycle 1 / Water Cycle 2 and Room thermostats.
There are 3 dierent ways to Thermo ON/OFF Space heating operation (heat pump and other heat resources running and
stopping).
The conguration of this option should be done through the master controller.
Conguration →Heat Pump →Water Pump Conguration
Mark Description Default Value Range Steps Units
O_mode(heating) WP ECO Mode Operation (heating) ON ON/OFF - -
(1) Thermo ON/OFF by room thermostats when [O_mode(heating) ] is set as [OFF].
In this situation, Water Cycle (Cycle 1 or Cycle 2) only operate with Room thermostats.
● Space heating is Thermo ON
If any one of room thermostats on the specic Water Cycle (Cycle 1 or Cycle 2) is Switch ON and Thermo ON, The
corresponding Water Cycle will be Switch ON and Thermo ON. Then the heat pump and other heat source will be operated
to meet demand. The heat pump and other heat source will be operated to achieve the Maximum value of Target outlet
water temperature.
- Maximum value of Target outlet water temperature= [Ttwo_Cycle 1] if only room thermostats on Water Cycle1 is
Thermo ON.
- Maximum value of Target outlet water temperature= [Ttwo_Cycle 2] if only room thermostats on Water Cycle2 is
Thermo ON.
- Maximum value of Target outlet water temperature = Maximum value of [Ttwo_Cycle 1] and [Ttwo_Cycle 2] if room
thermostats on both Water Cycle1 and Water Cycle2 is Thermo ON.
● Space heating is Thermo OFF
If all of room thermostats on both Water Cycle (Cycle 1 or Cycle 2) is Thermo OFF. Then the heat pump and other heat
source will stop operating.