Panasonic WH-ADF0309J3E5CM Service Manual page 61

11.2.3 Piping Installation
11.2.3.1 Water Quality Requirement
Must use water that complies with European water quality
standard 98/83 EC. The lifespan of the Tank Unit will be shorter if
groundwater (include spring water and well water) is used.
The Tank Unit shall not be used with the tap water containing
contaminants such as salt, acid, and other impurities which may
corrode the tank and its component.
11.2.3.2 Typical Piping Installation
Drain
Water
Multi Split Heat Pump
Outdoor Unit
Tank Water
Discharge
Drain/Tundish
11.2.3.3 Access to Internal Components
This section is for authorized and licensed electrician/water
system installer only. Work behind the front plate secured by
screws must only be carried out under supervision of qualified
contractor, installation engineer or service person.
Hook
Open or close the Front Plate carefully.
The heavy Front Plate may injures the
fingers.
2X (screw)

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.
Temporary Double
connection to Check Valve
be removed assembly is
immediately acceptable
after filling in house
Fan Coil Unit
Radiator /
Floor Heater
2-Way Valve
Expansion
Vessel
Tab /
Shower
Drain
Water
Check Shut Pressure
Valve Off Reducing
Valve Valve
WARNING
CAUTION
11.2.3.4
This Tank Unit is designed for combination with
Panasonic Multi Split Heat Pump Outdoor Unit. If
Outdoor Unit from other manufacturer are being used
in combination with Panasonic Tank Unit, optimum
operation and reliability of the system is not
guaranteed. Thus warranty cannot be given in such
case.
1 Connect Tank Unit to Multi Split Heat Pump
Outdoor Unit with correct piping size.
Tank Unit
WH-
ADF0309J3E5CM
Main
Supply
Do not overtighten, overtightening may cause gas leakage.
Do not pull and push refrigerant piping excessively, deformed
pipe may cause refrigerant leak.
2 Please make flare after inserting flare nut
(located at joint portion of tube assembly) onto
the copper pipe. (In case of using long piping)
3 Do not use pipe wrench to open refrigerant
piping. Flare nut may be broken and cause
leakage. Use proper spanner or ring wrench.
4 Connect the piping:
o
o
Additional Precautions For R32 Models when
connecting by flaring at indoor side
Ensure to do the re-flaring of pipes before connecting to
units to avoid leaking.
Connections made between components of refrigerant
system shall be accessible for ease of maintenance.
Seal sufficiently the flare nut (both gas and liquid sides)
with neutral cure (Alkoxy type) & ammonia-free
silicone sealant and insulation material to avoid the
gas leak caused by freezing.
61
Refrigerant Piping Installation
Torque
wrench
Spanner
Model Piping size (Torque)
Outdoor Unit Gas
ø12.7mm
CU-
(1/2")
2WZ71YBE5
[55 N•m]
CAUTION
Align the centre of piping and sufficiently
tighten the flare nut with fingers.
Further tighten the flare nut with torque
wrench in specified torque as stated in
the table.
Liquid
ø6.35mm
(1/4")
[18 N•m]