Panasonic WH-UX09HE8, Service Manual

Page: 105 / 245

105
12.1.6 Target Zone Water Temperature Control
Purpose:- To control zone mixing and zone pump according to the zone sensor temperature
12.1.6.1 Target Zone 1 water temperature setting control

Start condition
-
Heating zone 1 is ON by remote control or Timer or Auto Mode OR
-
Cooling zone 1 is ON by remote control or Timer or Auto Mode.

Cancel condition
-
Heating zone 1 is OFF by remote control or Timer or Auto mode AND
-
Cooling zone 1 is OFF by remote control or Timer or Auto mode.

Target Zone 1 water temperature is calculated as below condition.
-
Target Zone 1 water temperature = A (Base temperature) + B (shift temperature)
A (Base Temperature)
Compensation Direct
Value from the curve + User shift value set Direct value from user setting
* During heat mode and compensation select, if powerful mode is activated, higher value of WLo or WHi will be use
as curve value.
-
B (shift temperature) value is depend on the room sensor selection at remote controller as below table:
B (Shift Temp.) B shift value is depend on the room sensor selection at remocon as table below
Sensor Selection
Water temperature B = 0
External Room Thermostat B = 0
Internal Room Thermostat
&
Room Thermistor
Cool Mode:
B = 0 ; when Zone OFF or Zone Room Thermo OFF
B = 1 * (room set temp. (R/C) – actual room temp.)
Max/Min Regulation of B: (Max: 5°C ; Min: -5°C)
Heat Mode:
B = 0 ; when Zone OFF or Zone Room Thermo OFF
B = follow Heating PI control contents
Pool Function Selected B = Delta value setting from remocon
*B = 0 regardless of which sensor selection, if SHP control bit is enable except Pool function select (maintain Pool “B”
value)
** Pool function also can be select at Zone 1 when optional PCB is connected and Zone 1 system is select.

Maximum/minimum regulation of Target Water Temperature.
Heating Cooling
Max
55°C (Below Ambient -15°C) *
60°C (Below Ambient -10°C) *
20°C
Min 20°C 5°C
* Between outdoor ambient -10°C and -15°C, max target decreases gradually from 60°C to 55°C.

Target Zone 1 Water Temperature (Heat mode only) during SG ready control
-
If buffer tank selection is “NO” then following shift is carried out.
o
While digital input is “10” or “11” then,
Final Target Zone 1 water temperature
= Target Zone 1 water temperature* (SG ready % setting (remote control menu))%
-
If buffer tank selection is “YES”
o
No shift of Target Zone 1 Water Temperature. Target Buffer Tank Temperature will change accordingly.
* Refer to “Buffer tank temperature control”