15
- 15 - - 15 - - 15 -
shuts the unit down in the event of loss of refrigerant or not enough refrigerants. The switch
automatically resets when the pressure rises to normal operating pressures. The display will
show “EE2” if this switch is tripped.
Low Ambient Temperature
If the air outside the heat pump is not warm enough to produce heat, the system will shut
down. The actual point at which your unit will shut down due to low temperature varies
depending on current weather conditions, the amount of sunlight reaching the heat pump.
The shutdown can occur anywhere within a wide range of temperatures, usually below 0
degrees. A shutdown occurs because low temperatures will activate the systems
low-pressure safeguard switch (digital controller will display a code “PP7”.) The unit will
start up again when the temperature has raised enough to reset this switch.
Time Delay
All models use a 3-minute time delay to prevent repeated tripping of the compressor thermal
overload, which is caused by attempting startup before system pressures are equalized. Any
interruptions, outside of power loss, will result in a 3-minute time delay.
Parameters of product range
Model
74543 74544
74545
Heating Capacity kW (Air 26
℃
, Water 26
℃
)
5
9
12
C.O.P.
Air 26
℃
, Water 26
℃
5.3
5.5
5.3
Heating Capacity * kW (Air 15
℃
, Water 26
℃
)
3.7
6.5
8.5
C.O.P. *
Air 15
℃
, Water 26
℃
4.3
4.3
4.3
Rated Input Power * kW
0.86
1.51
1.98
Power supply
230V/1Ph/50Hz
Rated current (A)
3.9
6.9
9.0
Operating air temperature
℃
0~43
0~43
0~43
Advised water flux m³/h
3-4
4-6
5-7
Water pipe in-out spec mm
50
50
50
NW /GW Kg
35/40
52/57
66/70
*C.O.P: Coefficient of performance
Note:
1.
74543~74545 can work well under air temp +0
℃
~43
℃
; performance cannot be guaranteed outside the
operating ranges and must take account the exterior conditions of use identified to select suitable mode
(such as location, area of swimming pool, and numbers of swimmer.)
2.
Above parameters are subjected to adjustment periodically for technical improvement with further notice.
Please refer to nameplate on each machine for accurate information.
