MRA/K 15÷131

Aircooled condensing units and reversible condensing units with radial fans and Rotary/Scroll compressor for indoor ducted installation

The indoor condensing units and reversible condensing units of the MRA/K 15÷131 series, with R410A refrigerant, are intended to satisfy the needs of small and medium-sized domestic or industrial systems with particular difficulty in positioning units outside the building.
With a prepainted plate structure, these units are combined with evaporators in split system air conditioning installations, allowing the rooms to be cooled and dehumidified or to be heated. They can also be used in combination with hydronic evaporating units, generally in air-conditioning applications.
They are equipped with Rotary/Scroll compressors and radial fans, with appreciable useful head, and they enable immediate and efficient use thanks to particular technical and design adjustments.
A wide range of accessories, factory fitted or supplied separately, complete the outstanding versatility and functionality of the series.

Versions

MRA/K - Cooling only
MRA/K/WP - Reversible Heat Pump

Power range

4.5-37.0 kW
1.3-10.0 Ton

Features

Self-supporting prepainted steel frame.
Rotary/Scroll compressor with internal overheat protection and crankcase heater, if needed.
Double inlet radial fan statically and dynamically balanced directly driven by a electric motor (15÷81) or belt driven connected to a three-phase electric motor (91÷131).
Condenser made of copper tubes and aluminium finned coil, complete with drain pan for WP version only.
R410A refrigerant.
Electrical board includes: main switch with door safety interlock, fuse and compressor remote control switch.
Microprocessor control and regulation system (WP only).

Accessories

Factory fitted accessories

CC Condensing control down to -20 °C
TX Coil with pre-coated fins
VS Solenoid valve

Loose accessories

RP Coils protection metallic guards
AG Rubber shock absorbers

Technical data

			15	18	21	25	31	41	51	61	71	81	91	101	131
Cooling	Cooling capacity (1)	kW	4,5	5,6	6,8	8,0	9,2	10,8	13,2	15,8	19,1	21,2	26,4	30,9	36,6
Cooling	Absorbed power (1)	kW	1,5	1,9	2,2	2,6	3,0	3,8	4,9	5,9	7,0	7,9	10,3	10,4	13,5
Heating	Heating capacity (2)	kW	4,8	5,9	7,3	8,4	9,7	11,3	13,7	16,8	19,9	22,0	27,4	33,2	40,9
Heating	Absorbed power (2)	kW	1,6	2,0	2,4	2,7	3,1	3,9	5,0	6,1	7,2	8,1	10,5	11,0	13,9
Compressor	Quantity	n°	1	1	1	1	1	1	1	1	1	1	1	1	1
Compressor	Type		Rotary	Rotary	Rotary	Rotary	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll	Scroll
Connections	Suction line	Ø mm	16	16	16	16	16	16	18	18	22	22	28	28	28
Connections	Liquid line	Ø mm	10	10	10	10	10	10	12	12	12	12	12	12	12
Available static pressure		Pa	90	90	80	80	80	80	115	115	115	115	150	150	160
Electrical characteristics	Power supply	V/Ph/Hz	230/1/50	230/1/50	230/1/50	230/1/50	230/1/50	230/1/50	400/3+N/50	400/3+N/50	400/3+N/50	400/3+N/50	400/3+N/50	400/3+N/50	400/3+N/50
	Max. running current	A	10	12	13	14	17	21	11	14	14	15	27	33	36
	Max. starting current	A	40	46	65	65	82	89	61	64	61	77	146	151	148
Sound pressure	(3)	dB(A)	51	51	51	52	53	54	59	59	60	60	62	62	64
Weights	Transport weight	kg	120	121	123	126	131	133	190	200	202	204	313	319	334
Weights	Operating weight	kg	121	122	124	127	132	134	192	203	205	207	316	322	338

Dimensions

			15	18	21	25	31	41	51	61	71	81	91	101	131
L	STD	mm	900	900	900	900	900	900	900	900	900	900	1500	1500	1500
W	STD	mm	550	550	550	550	550	550	690	690	690	690	800	800	800
H	STD	mm	1425	1425	1425	1425	1425	1425	1725	1725	1725	1725	1425	1425	1425

Notes

1 Evaporating temperature 5 °C, ambient air temperature 35 °C.
2 Average condensing temperature 40 °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.