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Control function
Note:
1. [DHWEH] refers to 10.3.4 and DHW boost refers to 10.3.6.
2. Heat pump will keep cooling operation without shifting to DHW operation when Average outdoor ambient temperature is
more than 38°C - 40°C, that is out of heat pump heating operation range. DHW is met by DHW Electrical Heater (referring
to 10.3.4 (4)) or boiler (10.6.3 (7)), and keep complementary heat source is available at that time.
10.1.2.2.2 Alternate operation between SWP and Space heating/cooling
● Meet all following conditions to start SWP operation shift (SWP Switch ON).
(4) Tswp ≤ Tswps-1 [°C] or demand request by Optional input signal of [Swimming pool Demand ON/OFF] (refer to 10.4.2).
(5) Period time of space heating/cooling operation shift is more than 60 minutes or space heating/cooling has no demand.
● Meet one of following conditions to start space heating/cooling operation shift (space heating/cooling Switch ON).
(1) Tswp is met or demand request disappears by Optional input signal of [Swimming pool Demand ON/OFF] (refer to
10.4.2).
(2) Period time of SWP operation shift is more than120 minutes.
10.1.2.2.3 Alternate operation between SWP and DHW
● Meet all following conditions to start SWP operation shift (SWP Switch ON).
(1) Tswp ≤ Tswps-1 [°C] or demand request by Optional input signal of [Swimming pool Demand ON/OFF] (refer to 10.4.2).
(2) Period time of DHW operation shift is more than 60 minutes or DHW has no demand.
● Meet one of following conditions to start DHW operation shift (DHW Switch ON).
(1) Tswp is met or demand request disappears by Optional input signal of [Swimming pool Demand ON/OFF] (refer to
10.4.2).
(2) Period time of SWP operation shift is more than120 minutes.
10.1.2.2.4 Alternate operation between SWP / DHW / Space heating/cooling
All the available function will operate alternately with dierent priority depending on setting. Usually heat pump can operate
alternately between 2 functions. Operation can refer to followings when the three functions all switch on.
(1) When demand of one function is met , Heat pump can operate alternately between the other 2 functions according to
10.1.2.1.1 /10.1.2.1.2 /10.1.2.1.3. For example, Heat pump can operate alternately between DHW and space cooling
according to 10.1.2.1.1 when setting SWP temperature [Tswp] is met.
(2) When demand of SWP / DHW / Space heating/cooling are all requested. The heat pump can operate alternately
between the rst one of 2 functions according to 10.1.2.1.2, and then the Heat pump can operate alternately between
the second one of 2 functions according to 10.1.2.1.3.
Note:
1. It is not recommended to switch on all the three functions of SWP / DHW / Space heating/cooling at the same time.
2. When one function is urgent to use, it is recommended to switch o the other functions to focus the capacity of the heat
pump.
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