Panasonic WH-UD09CE5-A [71/146] Tank booster heater control

13.10. Tank Booster Heater Control

13.10.1. Tank booster heater control

Heating operation condition:

1. Booster heater Turn On condition:

• After BOOSTER HEATER DELAY TIMER fulfil during heat pump 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).

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

• 20 minutes since previous heater off.

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

2. Booster heater Turn Off condition:-

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

• 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.

13.11. Three Way Valve Control

• Purpose:

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

• Control contents:

1. 3 ways valve switch Off:

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

2. 3 ways valve switch On:

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

3. Stop condition:

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

13.12. 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.

13.13. 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 - 80 rpm

Minimum target FM speed = 200 rpm

• 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.