How To Adjust Water Flow Rate [Service Mode: 02]; Expansion Vessel Pre Pressure Checking; How To Unlock Cool Mode - Panasonic WH-SXC09F3E8 Service Manual

14.5

How to Adjust Water Flow Rate [SERVICE MODE: 02]

Before adjust the water flow rate, make sure that the total water volume in the installation is 50 litres minimum for
heating side. The default setting is SPEED 3 (Only for WH-S**09*3E8 and WH-S**09/12*9E8) and SPEED 4 for WH-
S**14/16*9E8. Please ensure the minimum flow rate is not less than 13 l/min and not more than 50 l/min.
The available external static pressure (kPa) in function of the water flow rate (l/min) is shown in the P-Q graph.
Depend on the hydraulic system pressure loss and type, the water flow rate can be adjusted by control panel.
1. Press SERVICE button for 5 seconds.
2. Press ▲ button to enter menu S02 and press SET button.
3. Press SELECT button then press ▲/▼ button to change SPEED and press SET to confirm.
4. Press OFF/ON button to quit setting.
14.6

Expansion Vessel Pre Pressure Checking


Expansion Vessel with 10 L air capacity and initial pressure of 1 bar is installed in this indoor unit.

Total amount of water in system should be below 200 L.
(Note: This amount of water is not include the tank unit volume)

If total amount of water is over 200 L, please add expansion vessel.

Please keep the installation height difference of system water circuit within 10 m.
(Inner volume of same indoor unit is about 5 L)

14.7 How to Unlock Cool Mode

1. Press buttons SET and SERVICE for 5 seconds.
2. Press SELECT button.
3. Unlock COOL mode with ▲/▼.
4. Press SET button.
P-Q
110.0
7
100.0
6
90.0
5
80.0
4
70.0
60.0
3
50.0
2
40.0
1
30.0
20.0
10.0
0.0
0 10 20
WATER FLOW RATE (I/min)
93
30 40 50