In heat pump running period, if the evaporator frosted in lower
ambient temperature, the system will defrost automatically to
the fan motor will stop, but compressor will still run.
ambient temperature result in longer heat-up time because of
If only use E-heater, about 150 liters water will be heated, so set
higher target water temperature if ambient temperature is out of
heat pump running range.
NOTE
E-heater will be activated once for the current heating progress,
if want to apply E-heater again, please by push .
When the unit is restarted after a long term stop(trail running
included), it is normal that outlet water is unclean. Turn the tap on
TCO and ATCO.
When ambient temp below 2 , heat pump and E-heater will
of ambient temperature, the lower portion of heat pump will
contribute as well as the higher portion of E-heater will provide
more detail please refer to Table.4-1.
If the water temperature is higher than 78 , the ATCO will
when the temperature falls down below 68 .
If the water temperature is higher than 85 , the TCO will
After that it needs to be reset manually.
Modes will be automatically selected by unit. Mode can not be
selected by manual operation.
Setting water temperature target range: 38~60 ºC .
E-heater running ambient temperature range: -20~43 ºC .
Heat pump running ambient temperature range: -7~43
ºC
.
Water temperature limits:
3)
7.2 Trial Running
1)
2)
3)
4)
5)
6)
7)
8)
Unit has two kinds of heat sources: Heat pump(compressor)
and electric heater.
The unit will automatically select heat sources to heat water to
the target temperature.
1)
The temperature shown on the display depends on the upper
sensor. It is normal that the display temperature has reached to
target temperature but compressor still running, because the
lower water temperature does not meet to target temperature.
2)
Tank
Temperature sensor(T5U)
Electric heater
Water inlet
Water outlet
Fig.7-3
The default heating source is heat pump.
4)
display, then if the ambient temperature goes into the running
range of heat pump again, it will stop E-heater and shift
automatically to heat pump again, and the icon LA( ) will be
extinguished.
If the target setting water temperature is higher than Maximum
to the Maximum temperature, then stop heat pump, activate
E-heater to continually heat water to the target temperature.
If manually activate the E-heater running when heat pump
running, E-heater and heat pump will work together until the
water temperature gets to target temperature. So to increase
recovery rate, please manually activate E-heater.
Temperature sensor(T5L)
Table . 7-1
ºC
ºC
ºC
ºC
System Structure
Water Temperature Display
Modes
Heat Source Shift
Running Temperature Range
7.2.2 System Running
7.2.1 Check List Before Commisioning
Defrosting During Water Heating
COP
Restaring After A long Break
TCO (Thermal Cutout) and ATCO (Auto Thermal Cutout)
Low Ambient Temperature
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