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5.1 Filling tank before operation
CAUTION
Operation without water in the
tank may result in the damage of
auxiliary e-heater (element). In case
of such damage, the manufacturer
will not be liable for any damages
caused by this issue.
Before using this unit, please follow the steps below.
• Open the cold water inlet valve.
• Fill the unit with water by opening a hot water tap inside the
home.
• Once water flows from the hot water tap, ensure all air in the
system is bled then close the hot water tap.
5.2 Powering on the unit
CAUTION
Ensure that the tank is full of water and all air has been bled
before turning on the power to the unit.
• Switch on the power to the water heater
• Unlock the control panel by pressing and holding the
CANCEL button for 3 seconds
• Turn heater on by pressing the ON/OFF button on the control
panel twice (Ensure the red LED is illuminated).
• Heater should then start running.
5.3 About Running
This heat pump unit has two kinds of heat sources:
Heat Pump (compressor) and Electric heater (element).
The unit will automatically select the heat source/s to heat the
stored water to the target temperature depending on the mode
selected and the surrounding conditions.
NOTE
• There are different heat-up times at different ambient
temperatures. Normally lower ambient temperature result in
longer heat-up times because of lower effective performance.
500
1000
1500
2000
2500
3000
5
7
15 20 25 30 32 35 40 43
C
ap
ac
ity
(W
)
Ambient temp(
℃
)
15-45
15-55
15-65
1
2
3
4
5
6
7
5
7
15
20
25
30
32
35
40
43
C
O
P(W/W)
Ambient temp(
℃
)
15-45
15-55
15-65
0 : 00: 00
2 : 24: 00
4 : 48: 00
7 : 12: 00
9 : 36: 00
12: 00: 00
14: 24: 00
5
7
15 20 25 30 32 35 40 43
Ti
m
e(
h)
Ambient temp(
℃
)
15-45
15-55
15-65
Ambient Temperature vs Capacity
500
1000
1500
2000
2500
3000
5
7
15 20 25 30 32 35 40 43
C
ap
ac
ity
(W
)
Ambient temp(
℃
)
15-45
15-55
15-65
1
2
3
4
5
6
7
5
7
15
20
25
30
32
35
40
43
C
O
P(W/W)
Ambient temp(
℃
)
15-45
15-55
15-65
0 : 00: 00
2 : 24: 00
4 : 48: 00
7 : 12: 00
9 : 36: 00
12: 00: 00
14: 24: 00
5
7
15 20 25 30 32 35 40 43
Ti
m
e(
h)
Ambient temp(
℃
)
15-45
15-55
15-65
Ambient Temperature vs COP (Coefficient of Performance)
500
1000
1500
2000
2500
3000
5
7
15 20 25 30 32 35 40 43
C
ap
ac
ity
(W
)
Ambient temp(
℃
)
15-45
15-55
15-65
1
2
3
4
5
6
7
5
7
15
20
25
30
32
35
40
43
C
O
P(W/W)
Ambient temp(
℃
)
15-45
15-55
15-65
0 : 00: 00
2 : 24: 00
4 : 48: 00
7 : 12: 00
9 : 36: 00
12: 00: 00
14: 24: 00
5
7
15 20 25 30 32 35 40 43
Ti
m
e(
h)
Ambient temp(
℃
)
15-45
15-55
15-65
Ambient Temperature vs Time
• The temperature shown on the display depends on the water
temperature sensor. It is normal that sometimes the display
temperature decreases while the unit is running. This is
caused when the natural convection of the upper hot water
mixes with the lower cold water from inlet tap.
• If the system continuously reports heat pump protection, the
latest error code and the alarm icon will be shown on the
display. The heat pump will stop running and the unit will shift
automatically to E-heater as the backup mode, but the error
code and alarm icon will remain until power is reset.
SYSTEM
COMMISSIONING
5