Maintenance Guide - Panasonic WH-ADF0309J3E5CM Service Manual

22. Maintenance Guide

In order to ensure safety and optimal performance of the Tank Unit, seasonal inspections on the Tank Unit, functional
check of RCCB/ELCB, field wiring and piping have to be carried out at regular intervals. This maintenance should be
carried out by authorized dealer. Contact dealer for scheduled inspection.
1 Charging and Discharging the Water
Make sure all the piping installations are properly done before carry out below steps.
Charge the Water

For Domestic Hot Water Tank
a. Set the Domestic Hot Water Tank Discharge (Drain Tap)
b. Set all Tap / Shower "OPEN".
c. Start filling water to the Domestic Hot Water Tank via Tube Connector
After 20~40min, water should flow out from Tap / Shower.
Else, please contact your local authorized dealer.
d. Check and make sure no water leaking at the tube connecting points.
e. Set the Domestic Hot Water Tank Discharge (Drain Tap)
from this pipeline. Then set it "CLOSE".
f. Turn the Safety Relief Valve
from this pipeline. Then recover the knob to original position.
g. Ensure Step 5 & 6 is carried out each time after charging water to Domestic Hot Water Tank.
h. To prevent back pressure from happening to the Safety Relief Valve
Valve

For Space Heating
a. Turn the plug on the Air Purge Valve ⑫ outlet anticlockwise by one complete turn from fully closed
position.
b. Set the Pressure Relief Valve ⑬ lever "DOWN".
c. Start filling water (with pressure more than 0.1 MPa (1 bar)) to the Space Heating circuit via Tube
Connector
hose.
d. Turn ON the Tank Unit and make sure Water Pump ② is running.
e. Check and make sure no water leaking at the tube connecting points.
f. The water may drip from this discharge hose. Therefore must guide the hose without close or block
the outlet of the hose.
C " L O
Domestic Hot Water Tank Discharge (Drain Tap)
knob counterclockwise slightly and hold for 10 seconds to release air
knob counterclockwise.
Lever
Turn down
Pressure Relief Valve ⑬
○
a . Stop filling water if the free water flow through Pressure Relief Valve ⑬ discharge
S " E
Plug (turn
anticlockwise by
one complete turn)
Air Purge Valve ⑫
Pressure Relief
Valve ⑬
Lever
or
Pressure Relief Valve ⑬
225
○
g to "CLOSE".
" O P E " N
g
○
c .
○
g to "OPEN" for 10 seconds to release air
, do turn the Safety Relief
Pressure
Relief Valve ⑬
Turn down