Panasonic WH-SDF16C9E8 [56/125] Tank booster heater control

12.10 Tank Booster Heater Control

12.10.1 Tank Booster Heater Control

Heating operation condition:

1 Booster heater Turn On condition:

o After BOOSTER HEATER DELAY TIMER fulfil during heatpump startup time in tank mode, or during

switching from heating heat-up interval to tank heat-up interval in heat+tank mode (heating priority not

set).

o Tank temperature < Tank set temperature + [-5°C],

o 20 minutes since previous heater off.

* BOOSTER HEATER DELAY TIMER is clear when tank heat-up interval end.

2 Booster heater Turn Off condition:

o Tank temperature > Tank set temperature + [+2°C] for continuous 15 sec

o When BOOSTER HEATER DELAY TIMER start count after switch from heating heat-up interval to tank

heat-up interval

* DELAY TIMER can be set by control panel.

12.11 Three Way Valve Control

 Purpose:

- 3 ways valve is used to change flow direction of hot water from heatpump between heating side and tank side

 Control contents:

1 3 ways valve switch Off:

o During 3 ways valve switch Off time, the hot water will provide heat capacity to heating side.

2 3 ways valve switch On:

o During 3 ways valve switch On time, the hot water will provide heat capacity to tank side.

3 Stop condition:

o During stop mode, 3 ways valve will be in switch off position

12.12 Sterillization Mode

1 During sterillization mode, tank will be heat up to the sterillize set temperature for a certain period of time,

also set by controller.

2 The function can only be set on timer to operate once in a week.

3 It will be cancelled even when the temperature is not reached after 4 hours.

4 When tank mode is OFF or disabled, sterillization is cancelled.

12.13 Quiet Operation

 Purpose:

- To provide quiet operation compare to normal operation by reduces outdoor unit noise.

 Starting condition:

1 When quiet button is presses.

2 When quiet request ON time by weekly timer (Refer to control panel.)

 When any of above mentioned condition is achieved, this control is activated.

New target FM speed = Present target FM speed - 80rpm

Minimum target FM speed = 200rpm

 Cancellation condition:

1 Cancel by press quiet button

2 Stop by OFF/ON button

3 When quiet request OFF time by weekly timer

When any of above mentioned condition is achieved, this control is cancelled.