Air To Water Chiller

1.It can operate stably in an ultra-low temperature environment of -35℃

2. Precise frost measurement, rapid defrosting, reduced defrosting frequency, and shortened defrosting time

3. Mobile APP operation, fault warning, and online diagnosis

4. It operates efficiently within an ultra-wide ambient temperature range of -35℃ to 43℃

5. COPh > 2.6 exceeds the national standard energy efficiency limit value, and IPLV(H) exceeds the national standard first-level energy efficiency

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Product Details

Air Cooled Screw Chiller

Product introduction

The GRAD Air Cooled Screw Chiller is equipped with a self-developed NB-iot Internet of Things remote intelligent control module. It can be operated via a mobile phone APP and does not require dedicated personnel to stand by. It also features fault prediction Warning alerts and online diagnosis. It can operate efficiently in an ambient temperature range of -30 ° C to 43 ° C, with a maximum water outlet temperature of 60 ° C. It comes in various terminal forms and is suitable for radiators and floors Radiation, central air conditioning for cooling and heating. The national patented intelligent defrosting technology accurately detects frost, quickly defrosts, significantly reduces the frequency of defrosting, and greatly shortens the defrosting time. In addition, this unit also has unique advantages such as modular customization, no need to build a machine room, environmental protection and energy conservation, high efficiency and low noise, and wide application range.

Air To Water Chiller

Product advantages

1.Free of machine room, less initial investment.

Installed outdoors, no need to build a separate room, no need cooling towers, no need to drill Wells or bury pipes, thus reducing the initial investment of the user.

2. High efficiency, energy saving, environmental protection and safety

Air-cooled screw cold (hot) water unit compared with electric heating can save electricity 75%. Compared with traditional boiler equipment, no combustion,Burning, no exhaust emissions, no flammable and explosive safety hazards.

3. Wide range of operation, strong applicability

According to different needs, a variety of models are available, it can be stable heating operation at -35 ° C ambient temperature, at -30 ° C ~ 48 ° C Stable cooling operation at ambient temperature

4. Intelligent control, no need for special duty

Intelligent control system monitors the operation status of the unit in real time, and automatically adjusts the energy of the unit according to the actual load demand, without the need for special duty, saving labor cost.

5. Multiple protection functions to ensure reliable operation of the unit

With multiple protection function, when failure, real-time automatic alarm

Technical parameter table of air cooled screw cold (hot) water chiller R407C
Unit Model			LSA050	LSA060	LSA080	LSA100	LSA120	LSA140	LSA160	LSA180	LSA200	LSA220	LSAD160	LSAD180	LSAD200	LSAD220	LSAD240	LSAD280	LSAD320
Unit Model			LSA050H	LSA060H	LSA080H	LSA100H	LSA120H	LSA140H	LSA160H	LSA180H	LSA200H	LSA220H	LSAD160H	LSAD180H	LSAD200H	LSAD220H	LSAD240H	LSAD280H	LSAD320H
Nominal cooling capacity		KW	170	210	280	350	420	490	560	630	680	760	560	630	700	750	840	980	1120
Cooling input poer		KW	53	66	88	109	131	153	175	197	213	238	175	197	219	234	263	306	350
Nominal heating capacity		KW	187	21	308	385	462	539	616	693	748	836	616	693	770	825	924	1078	1232
Heating input power		KW	55	68	91	113	136	159	181	204	220	246	181	204	226	243	272	317	362
power supply			3-380V-50HZ
Starting mode			Y-∆
Energy control			25%-100%										12.5%-100%
Compressor	Type		Semi-closed screw type
Compressor	Quantity		1										2
Condenser	Type		copper-tube and aluminum-fin type
Evaporator	Type		Shell and tube type
	Water resistance	KPa	70-90
	Fouling factor	℃/KW	0.018
	Water pipe diameter	DN	80	100	100	100	125	150	150	150	150	150	150	150	150	150	150	200	200
	Water flow	m3/h	32.2	39.7	53	66.2	79.5	92.7	106	119.2	128.7	143.8	96.3	108.4	120.4	129	144.5	168.6	192.6
Condenser fan	Type		Axial-flow type
	Quantity	Unit	4	6	6	8	8	8	8	10	10	10	12	12	16	16	16	16	16
	Input poer	KW	1.1×4	0.75×6	1.1×6	1.1×8	1.5×8	2.2×8	2.2×8	2.2×10	2.2×10	2.2×10	1.1×12	1.5×12	1.5×12	1.5×16	1.5×16	2.2×16	2.2×16
	Air volume	m3/h	14650×4	13260×6	14650×6	14650×8	16270×8	21000×8	21000×8	21000×10	21000×10	25000×10	14650×12	16270×12	14650×16	16270×16	16270×16	21000×16	21000×16
Noise		dB(A）	77	78	78	79	79	80	81	83	83	85	81	82	82	82	83	84	85
Overall dimension	Length	mm	2280	3370	3370	4100	4100	4620	4620	6100	6100	6100	6540	6540	8000	8000	8000	9000	9000
	Width	mm	2250
	Height	mm	2410	2410	2410	2410	2410	2600	2600	2600	2600	2600	2410	2410	2450	2450	2450	2650	2650
unit weight		kg	2500	3500	3700	4500	4700	5100	5500	6200	6250	6300	7000	7200	8800	9000	9200	11000	12000
Operating weight		kg	2625	3675	3885	4725	4935	5355	5775	6510	6562	6615	7350	7560	9240	9450	9660	11560	12600

About us

GRAD sales network covers over 100 countries and regions like America, Australia Indonesia, Malaysia, UAE, Thailand, Nigeria etc and has established branch company in USA, and set up offices in Cambodia and Thailand to make overall layout of global market.

Air To Water Chiller

Shandong GRAD Group Co.,Ltd. is established in 1993, located in Dezhou Shandong,covering an area of 700 thousand square meters, with more than 2500 employees. The total capital is 925 million RMB, and annual output value over 2.5 billion RMB. During 30 years' development, GRAD Group concentrates on the central air-conditioning and compound material products and show the world a high-technological

enterprise combining construction budget, technical consultation, products design, Manufacturing and debugging service. There are 10 series, over 130 kinds of products covering the whole central air-conditioning series and the compound materials series products. The high

standard workshop covering 350 thousand square meters.

Air To Water Chiller