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Do not overtighten, overtightening may cause water leakage.
•
Make sure to insulate the water circuit pipes to prevent reduction of
heating capacity.
•
After installation, check the water leakage condition in connection area
during test run.
•
Failure to connect the tube appropriately might cause the Tank Unit
malfunction.
•
Protection From Frost:
If the Tank Unit is being exposed to frost while power supply failure or pump
operating failure, drain the system. When water is idle inside the system,
freezing up is very likely to happen which could damage the system. Make
sure the power supply is turned off before draining. Heater Assembly 0
may be damaged under dry heating.
•
Corrosion Resistance:
Duplex stainless steel is naturally corrosion resistant to mains water
supply. No specifi c maintenance is required to maintain this resistance.
However, please note that Tank Unit is not guaranteed for use with a
private water supply.
•
It is recommended to use a tray (fi eld supply) to collect water from the Tank
Unit if water leakage occur.
Recommended piping installation sequence:
(a) (c) (e) (f) (b) (d)
(A) Space Heating/Cooling Pipework
•
Connect Tank Unit Tube Connector
Panel/Floor heater.
•
Connect Tank Unit Tube Connector
Floor heater.
•
Connect Tank Unit Tube Connector
Panel/Floor heater.
•
Connect Tank Unit Tube Connector
Floor heater.
•
Failure to connect the tube appropriately might cause the Tank Unit malfunction.
•
Refer below table for the rated fl ow rate of each particular Outdoor Unit.
Model
Tank Unit
WH-ADC0309K3E5,
WH-ADC0309K3E5AN,
WH-ADC0309K6E5,
WH-ADC0309K6E5AN
(B) Domestic Hot Water Tank Pipework
•
It's strongly recommended to install an expansion vessel (fi eld supply)
in the Domestic Hot Water Tank circuit. Refer Typical Piping Installation
section to locate the expansion vessel.
Recommended pre-charge pressure of the expansion vessel (fi eld
supply) = 0.35MPa (3.5 bars)
•
In high water pressure or water supply is above 500kPa, please install the
Pressure Reducing Valve for water supply. If the pressure higher than that,
it might damage the Tank Unit.
•
A Pressure Reducing Valve (fi eld supply) with below specifi cation is strongly
advised to be installed along the line of the tube connector i of Tank Unit.
Refer Typical Piping Installation section to locate both of these valves.
Recommended Pressure Reducing Valve specifi cations:
- Set pressure: 0.35 MPa (3.5 bars)
•
Must connect a faucet to Tank Unit Tube Connector j and main water
supply, in order to supply water with appropriate temperature for shower
or tap usage. Failure to do so might cause scalding.
•
Failure to connect the tube appropriately might causing the Tank Unit
malfunction.
(C) Drain Elbow and Hose Installation
•
Fix the Drain Elbow 3 and Packing 4 to the bottom of Drain Water Hole
Packing
Drain Elbow
•
Use inner diameter 17 mm drain hose in the market, fi x to Drain Elbow 3 .
•
This hose must to be installed in a continuously downward direction and in
a frost-free environment. Improper drain piping may cause water leakage
hence damage the furnitures.
•
If drain hose is long, use a metal support fi xture along the way to eliminate
the wavy pattern of drain tube.
8
CAUTION
to outlet connector of Zone 1
a
to inlet connector of Zone 1 Panel/
b
to outlet connector of Zone 2
j
to inlet connector of Zone 2 Panel/
k
Rated Flow Rate (l/min)
Outdoor Unit
Cool
WH-UDZ03KE5*
9.2
WH-UDZ05KE5*
14.3
WH-UDZ07KE5*
19.2
WH-UDZ09KE5*
23.5
4
3
•
Guide the drain hose to outdoor as illustrated.
•
Do not insert this hose into sewage or drain pipe that may generate
ammonia gas, sulphuric gas etc.
•
If necessary, use hose clamp to further tighten the hose at drain hose
connector to prevent leakage.
•
Water will drip from this hose, therefore the outlet of this hose must be
installed in an area where the outlet cannot become blocked.
(D) Domestic Hot Water Tank Discharge (Drain Tap) and Safety Relief
Valve Pipework
•
Safety Relief Valve 0.8MPa (8 bars) incorporated in Domestic Hot Water
Tank.
•
Drain Tap and Safety Relief Valve discharge fi ttings share the same
drainage outlet.
•
Use R½" male connector for this drainage outlet connection (Tube
connector
g
).
•
Piping must always be installed in a continuously downward direction. It
must not be longer than 2m, with no more than 2 elbows, and must not
allow condensation to build up or freezing to occur.
•
The pipe from this drainage outlet fi tting must not be shut off. The discharge
must be freed.
•
The end of this pipework must be in such a way so that the outlet is visible
and can not cause any damage. Keep away from electrical components.
•
It is recommended to fi t a tundish into this
be visible and positioned away from frost environment and electrical
components.
CONNECT THE CABLE TO
4
THE TANK UNIT
Heat
9.2
14.3
20.1
This section is for authorized and licensed electrician only. Work
25.8
behind the Control Board Cover 5 secured by screws must
only be carried out under supervision of qualifi ed contractor,
installation engineer or service person.
Please take extra precaution when open
the control board cover 5 and control
board 6 for unit installation and servicing.
Failure to do so may cause injury.
Fixing of Power Supply Cable and Connecting Cable
1. Connecting cable between Tank Unit and Outdoor Unit shall
be approved polychloroprene sheathed fl exible cord, type
designation 60245 IEC 57 or heavier cord. See below table for
cable size requirement.
.
h
Tank Unit
WH-ADC0309K3E5
WH-ADC0309K3E5AN
WH-ADC0309K6E5
WH-ADC0309K6E5AN
•
Ensure the colour of wires of Outdoor Unit and the terminal no.
are the same to the Tank Unit respectively.
•
Earth wire shall be longer than the other wires as shown in the
fi gure for the electrical safety in case of the slipping out of the
cord from the Holder (Clamper).
Discharge below
fi xed grating
Fixed grating
Trapped gulley
Possible wall
Illustration of guide drain hose to outdoor
pipework. Tundish should
g
WARNING
CAUTION
Model
Outdoor Unit
WH-UDZ03KE5*,
WH-UDZ05KE5*
WH-UDZ07KE5*,
WH-UDZ09KE5*
WH-UDZ03KE5*,
WH-UDZ05KE5*
WH-UDZ07KE5*,
WH-UDZ09KE5*
Connecting Cable
Size
4 x min 1.5 mm
2
2
4 x min 2.5 mm
4 x min 1.5 mm
2
4 x min 2.5 mm
2
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