Hisense AHM-080HCDSAA - Page 244

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Control function
(2) OTC point
Water target is selected by an Outside Temperature Compensated (OTC) control that is dened by 4 di󰀨erent points to
create a line representing the function that the air to water heat pump will use to give the temperature setting according
to the current ambient temperature. OTC Points system will use average outdoor ambient temperature in order to get the
water temperature set-point. Water set-point will be determined using the following rule:
①
Water temperature set point of Water Cycle 1
:
Ttwo_c1 _water_p as following
Tah1l
Tah1h
A
Outdoor ambient
temperature(°C)
Tsh1l
Tsh1h
The conguration of this option should be done through the master controller
Conguration → Space heating → Cycle 1→ Water Regulation Mode→ OTC point
Mark Description Default Value Range Steps Units
Tah1l low ambient temperature -20 -20~5 1 °C
Tah1h High ambient temperature 20 6~25 1 °C
Tsh1l
Water temperature at low
ambient temperature
44* 35~c1_wate_h_max 1 °C
Tsh1h
Water temperature at high
ambient temperature
25* c1_wate_h_min~34 1 °C
Mark Description Default Value Range Steps Units
Tah2l low ambient temperature -20 -20~5 1 °C
Tah2h High ambient temperature 20 6~25 1 °C
Tsh2l
Water temperature at low
ambient temperature
44* 35~c2_wate_h_max 1 °C
Tsh2h
Water temperature at high
ambient temperature
25* c2_wate_h_min~34 1 °C
②
Water temperature set point of Water Cycle 2: Ttwo_c2 _water_p as following
Outdoor ambient
Tah2h
temperature( )
Tah2l
Tsh2l
Tsh2h
°C
The conguration of this option should be done through the master controller
Conguration → Space heating → Cycle 2→ Water Regulation Mode→ OTC point
NOTE:
1. Average Outdoor Ambient Temperature (2 hours) is used to calculate set-point.