CHA-M/MK 252-P÷684-P

Modular aircooled liquid Chillers and Heat Pumps with axial fans, Scroll compressors and plate exchanger

The liquid Chillers and Heat Pumps of CHA-M/MK 252-P÷684-P MODULAR series, with R410A refrigerant, are designed for medium and large sized service or industrial buildings. They are used, combined with terminal units, for the air conditioning of the rooms.
The MODULAR units feature a dedicated layout of the unit itself and its internal components in order to build big capacity systems through modular combination of single units.
The range is made of 4 base modules from 19 to 51 TON, featuring V design condensing coils, axial fans, single or double cooling circuit with Scroll compressors and plate exchanger.
The electric panel positioned frontally and the optimization of internal layout allow to build multi-unit modular systems of extremely compact footprint.
The multi-unit systems can be centrally controlled with master-slave logic through RS485 ModBus connection that ensure balancing of operation time among the units and backup in case of failure.

Versions

CHA-M/MK - Cooling only
CHA-M/MK/WP - Reversible Heat Pump

Power range

65.0-180 kW
19.0-51.0 Ton

Features

Structure with supporting frame, made of galvanised sheet metal with additional protection provided by polyester powder coating.
Scroll compressors with oil sight glass, internal overheat protection and crankcase heater.
Axial fans directly coupled to an electric motor with external rotor.
Condenser made of copper tubes and aluminium finned coils.
Evaporator AISI 316 stainless steel braze welded plates type with one circuit on the refrigerant side and one on the water side in 252-P÷342-P models, with two independent circuits on the refrigerant side and one on the water side in 504-P÷684-P models, complete with water differential pressure switch.
R410A refrigerant.
Electrical board includes: main switch with door safety interlock, fuses, thermal protection relays for compressors and thermocontacts for fans.
Microprocessor control and regulation system.

Accessories

Loose accessories

CR Remote control panel

Technical data

			252-P	342-P	504-P	684-P
Cooling	Cooling capacity (1)	kW	65,3	90,1	131	180
	Absorbed power (1)	kW	22,2	30,3	44,4	60,6
	EER (1)		2,94	2,97	2,94	2,97
Cooling (EN14511)	Cooling capacity (1)	kW	64,9	89,6	130	179
	Absorbed power (1)	kW	22,6	30,8	45,2	61,6
	EER (1)		2,87	2,91	2,87	2,91
Heating	Heating capacity (2)	kW	73,4	100	147	200
	Absorbed power (2)	kW	24,2	31,8	48,4	63,6
	COP (2)		3,03	3,15	3,03	3,15
Heating (EN14511)	Heating capacity (2)	kW	73,9	101	148	202
	Absorbed power (2)	kW	24,8	32,7	49,6	65,4
	COP (2)		2,98	3,08	2,98	3,08
Compressor	Quantity	n°	2	2	4	4
	Refrigerant circuits	n°	1	1	2	2
	Capacity steps	n°	2	2	4	4
Evaporator	Water flow	l/s	3,12	4,30	6,24	8,60
	Pressure drops	kPa	43	48	43	48
	Water connections	"G	2"	2"	2"	2"
Electrical characteristics	Power supply	V/Ph/Hz	400/3/50	400/3/50	400/3/50	400/3/50
	Max. running current	A	53,5	66,6	107	133
	Max. starting current	A	170	235	340	470
Sound pressure	(3)	dB(A)	60	60	62	62
Weights	Transport weight	kg	547	596	1114	1211
Weights	Operating weight	kg	550	600	1120	1220

Dimensions

			252-P	342-P	504-P	684-P
L	STD	mm	2200	2200	2200	2200
W	STD	mm	1100	1100	2200	2200
H	STD	mm	2045	2045	2045	2045

Notes

1 Chilled water from 12 to 7 °C, ambient air temperature 35 °C.
2 Heated water from 40 to 45 °C, ambient air temperature 7 °C d.b./6 °C w.b.
3 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
N.B. (1) Weights of WP version are specified on technical brochure.