Air source heat pump
1automatically
2famous brand component
3did not defrost,when the temperature was below -15degree

parameter	Unit	MDY50D(model)
Rated-heating-capacity	KW	19
Average-heating-input-power	KW	4.4
Rated-heating-input-current	A-	9
Max-outlet-water-temp	C	35
COP	-	4.2
Power	V/Hz	380V/50
Noise	Db(a)	55
Dimension	W*D*H	mm	1120*490*1270
Packing-size	W*D*H	mm	1200*520*1350
Unit-weight	KG	175
Refrigerant	-	R417A/R407C
Working-air-temp-range	-	(-20C)—45C
compressor	Type	-	Copeland
Air-source-heat-exchanger	Type	-	Finned-heat-exchange
Fan-Type	-	axial-flow-fan
Hot-water-side-heat-exchange	Type	-	Titanium-heat-exchanger
Water-flow	L/H	7500L/h
Water-pressure-down	Kpa	45
Pipe-size	DN	50