Proper Pump Down Procedure; Adjust Water Flow Rate With Water Pump - Panasonic WH-ADC0916G9E8 WH-UX09FE8 Service Manual

15.3.1 System Capacity Rank Setting
Before Tank Unit operate, its Capacity Rank have to match with connected Outdoor Unit. See below table for detail.
The Capacity Rank can be set by Control Panel
1 Press SET and SERVICE buttons simultaneously for 5 seconds.
2 Press ▲/▼ button to select menu CAP RAN.
3 Press SELECT button then press ▲/▼ button to change capacity rank and press SET button to confirm the
outdoor capacity rank.
4 Press CANCEL button and Exit to home display.

15.4 Proper Pump Down Procedure

Strictly follow the steps below for proper pump down procedure. Explosion may occur if the steps are not followed as per sequence.
1. When the Tank Unit is not in operation (standby), press the "SERVICE" switch on the Control Panel to enter SERVICE mode.
Operate the system in Sr : 01 mode for pump down operation.
2. After 10~15 minutes, (after 1 or 2 minutes in case very low ambient temperatures (< 10°C)), fully close 2 way valve on Outdoor Unit.
3. After 3 minutes, fully close 3 way valve on Outdoor Unit.
4. Press the "OFF/ON" switch on the Control Panel to stop pump down operation.
5. Remove the refrigerant piping.

15.5 Adjust Water Flow Rate with Water Pump

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 Water Pump speed is SPEED 4. Adjust the water flow rate according to connected outdoor
unit model.
Please ensure the 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 When the Tank Unit is in stop operation, press SERVICE button for 5 seconds.
2 Press ▲/▼ button to select menu S02 (PUMP SPEED ADJUST MODE) and press SET button to confirm the
menu.
3 Press SELECT button then press ▲/▼ button to change pump speed and press SET button to confirm the
pump speed.
4 Press OFF/ON button to exit PUMP SPEED ADJUST MODE.
During PUMP SPEED ADJUST MODE, we can select AIR PURGE function by pressing FORCE button. In AIR
PURGE function, the pump will operate ON and OFF for 15 minutes to purge the air in the hydraulic system. AIR
PURGE function will end after complete OR press the FORCE button again, and it will return back to PUMP SPEED
ADJUST MODE.
Model
Tank Unit
ADC0916*E8*
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
10 13
0
Outdoor Unit
UX09*E8*
UX12*E8*
UX16*E8*
UD09*E8*
UD12*E8*
UD16*E8*
WARNING
7
6
5
4
3
2
1
20 30 40 50 60
WATER FLOW RATE (L/min)
98
Capacity Rank
9
12
16
9
12
16
70