104
2) Buffer Tank Connection select "YES" &
o
1 zone system or 2 zone system select
a) Each zone control by each sensor which select from either one of the 4 room sensor
b) Target Zone 1 & 2 Water Temperature calculate base on selected temperature control type (Compensation
or Direct) and selected room sensor. Each zone have their own Target Zone Water Temperature.
* Zone Mixing Valve & Zone pump will operate to achieve each Target Zone Water Temperature which refer
to zone sensor
* Zone Sensor will detect if zone sensor is open or short.
c) Target Buffer Tank Temperature will be set as active & higher zone water temperature s Buffer Delta
T. (Heating) Target Buffer Tank Temperature will be set as active & lower zone water temperature setting
(Cooling).
d) Target Water Temperature will set as Target Buffer Tank Tempe [2°C] (Heating) Target Water
Temperature will set as Lower or Active Target Zone Water Temp. + [-3°C] (Cooling)
e) Target Water Temperature is a temperature for heat pump to operate refer to indoor water outlet sensor.
f) Heat pump and water pump OFF when ROOM thermo OFF
- Heat mode: ROOM thermo OFF (Buffer Tank Temperature
>
Target Buffer Tank + [0°C]
- Cool mode: ROOM Thermo OFF (Both Zone thermo OFF by Room Th or Room Thermostat)
12.1.7 Auto Mode Operation
Outdoor Ambient
Cool To Heat
Setting Temp.
COOL
MODE
HEAT
MODE
Heat To Cool
Setting Temp.
Control
details:
o
To enable the unit to operate either heat or cool mode automatically, heat to cool set temperature and
cool to heat set temperature can be set by control panel.
o
Automatic operation is judged based on control panel setting temperature and outdoor ambient
temperature.
* Minimum setting of heat to cool set temperature is 1°C higher than cool to heat set temperature.
Judgement
control:
o
If outdoor ambient temperature < Heat to Cool Set Temperature, unit will operate in Heat Mode or else
the unit will operate in Cool Mode.
o
If current operation is Cool mode, outdoor ambient temperature > Cool to Heat Temperature, unit will
maintain Cool mode operation or else the unit will operate Heat mode.
o
If current operation is Heat mode, outdoor ambient temperature > Heat to Cool Temperature, unit will
maintain Heat mode operation or else the unit will operate Cool mode.
o
Every 60 minutes the outdoor ambient temperature is judged.
o
When Auto + Tank mode is selected, operation mode switching is judged by both outdoor ambient
temperature and indoor air temperature.
