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21. Servicing Guide (WH-ADC0309J3E5CM)
21.1 How to Take out Front Plate
Open and Close Front Plate ⑯
1 Remove the 2 mounting screws of Front Plate
⑯.
2 Slide it upwards to unhook the Front Plate ⑯
hook.
3 Reverse above steps 1~2 for close it.
CAUTION
Open or close the Front Plate carefully.
The heavy Front Plate may injures the
fingers.
Hook
2X (screw)
21.2 Test Run
1 Before test run, make sure below items have been checked:-
a) Pipework are properly done.
b) Electric cable connecting work are properly done.
c) Tank Unit is filled up with water and trapped air is released.
d) Please turn on the power supply after filling the tank until full.
2 Switch ON the power supply of the Tank Unit. Set the Tank Unit RCCB/ELCB to “ON” condition. Then,
please refer to the Operation Instruction for operation of Remote Controller ①.
Note:
During winter, turn on the power supply and standby the unit for at least 15 minutes before test run.
Allow sufficient time to warm up refrigerant and prevent wrong error code judgement.
3 For normal operation, Water Pressure Gauge ⑮ reading should be in between 0.05 MPa and 0.3 MPa.
4 During test run, use a container to collect high volume of discharge water from Pressure Relief Valve ⑬
discharge hose.
5 After test run, please clean the Magnetic Water Filter Set ⑦. Reinstall it after finish cleaning.
21.3 Expansion Vessel ⑪ Pre Pressure Checking
For Space Heating
Expansion Vessel ⑪ with 10 L air capacity and initial pressure of 1 bar is installed in this Tank Unit.
Total amount of water in system should be below 200 L.
(Inner volume of Tank Unit’s piping is about 5 L)
If total amount of water is over 200 L, please add another expansion vessel. (field supply)
Please keep the installation height difference of system water circuit within 10 m.
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