RTAXT/K/EC 182÷804

Double skin packaged Roof Top units with Scroll compressors and EC Inverter Plug-Fans

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The double skin packaged Roof Top units are the ideal solution for air conditioning of wide surfaces such as shopping malls and restaurants, canteens or for industrial areas. Those units feature Inverter Scroll compressor with R410A refrigerant and EC Inverter Plug-Fans.
Equipped with extruded aluminium alloy sections and 50mm-thick sandwich panelling, these units are available in Cooling only and Reversible Heat Pump version.
The flat or pocket filters help to keep the air quality at a suitable level.

Versions

RTAXT/K/EC - Cooling only with EC Inverter Plug-Fans
RTAXT/K/EC/MS - Cooling only with EC Inverter Plug-Fans and Mixing Box
RTAXT/K/EC/WP - Reversible Heat Pump with EC Inverter Plug-Fans
RTAXT/K/EC/WP/MS - Reversible Heat Pump with EC Inverter Plug-Fans and Mixing Box

Power range

50.0-243 kW
14.0-69.0 Ton

Features

Structure of base perimeter made of steel sheet elements galvanised. Frame made of extruded aluminium alloy profiles connected by 3 way joints. Section connection is effected by means of assembling conic stirrups and water proofing is granted by gaskets.
Scroll compressors with oil sight glass, internal overheat protection and crankcase heater.
Condenser and evaporator with copper tube and aluminium finned coil.
EC INVERTER PLUG-FAN delivery fan with high energy efficient reversed blades with external rotor motor and electronic speed adjustment for easy adaptation to plant features.
R410A refrigerant.
Electrical board includes: door interlocking isolator, fuses, thermal protection relays on compressors, thermocontacts for the fans of the condensing unit and contactors for the fan motors of the air handling unit.
Electrical board with dedicated components sizing and ventilation system for unit operation at high outdoor ambient temperature.
Microprocessor for the automatic control of the unit.
Operating outdoor ambient air temperature up to 52 °C.

Accessories

Factory fitted accessories

HUR Upwards air delivery, inspection door on the right
HUL Upwards air delivery, inspection door on the left
HDR Downwards air delivery, inspection door on the right
HDL Downwards air delivery, inspection door on the left
HLR Air delivery on the left, inspection door on the right
HRL Air delivery on the right, inspection door on the left
IM Automatic circuit breakers
RE Adjustable minimum/maximum voltage and phase control relay
SL Unit silencement
SNM Air delivery sensor
RFM Cooling circuit shut-off valve on discharge line
RFL Cooling circuit shut-off valve on liquid line
CC Condensing control down to -20 °C
TXC Condensing coil with pre-coated fins
TXE Evaporating coil with pre-coated fins
FT/M6 Soft bag filters efficency ePM10 70% (M6)
FT/M7 Soft bag filters efficency ePM2.5 70% (F7)
FT/M8 Soft bag filters efficency ePM1 70% (F8)
FT/R6 Rigid bag filters efficency ePM10 70% (M6)
FT/R7 Rigid bag filters efficency ePM1 50% (F7)
FT/R8 Rigid bag filters efficency ePM1 70% (F8)
FS Anti-sand filter
AT Constant air flow regulation control
AT/P Constant available static pressure regulation control
AT/C Control adjustment of the air flow according to the load
EHG Electrical heater with step regulation
PF Differential pressure switch filters control
SB Fire sensor
SC Smoke sensor
IS Modbus RTU protocol, RS485 serial interface
IST Modbus TCP/IP protocol, Ethernet port
ISBT BACnet IP protocol, Ethernet port
ISB1 BACnet MSTP protocol, RS485 serial interface, BTL certified
ISBT1 BACnet IP protocol, Ethernet port, BTL certified
ISS SNMP protocol, Ethernet port
IAV Remote set-point, 0-10V signal
IAA Remote set-point, 4-20mA signal
IAS Remote signal for second set-point activation
IDL Demand limit from digital input
CP Potential free contacts
RP Coils protection metallic guards
MN High and low pressure gauges
SQ Air quality probe
SQO Air quality probe (CO2)
SQV Air quality probe (CO2+VOC)

Loose accessories

CR Remote control panel
CDT Touch Screen room thermostat with unit visualization
AG Rubber shock absorbers

Technical data

			182	202	242	262	304	364	404	484	524	604	804
Cooling	Cooling capacity (1)	kW	49,5	58,5	67,0	76,2	88,5	100	112	126	149	176	243
	Absorbed power (1, 2)	kW	21,4	24,2	27,7	30,6	38,4	41,1	45,0	52,4	63,1	72,9	90,2
	Cooling capacity (3)	kW	56,5	67,3	76,1	86,2	100	115	130	142	169	198	276
	Absorbed power (2, 3)	kW	18,1	22,8	26,1	28,7	36,2	38,3	42,1	48,8	52,3	68,5	72,6
Heating	Heating capacity (4)	kW	58,7	68,7	75,3	87,4	102	117	134	148	174	204	288
Heating	Absorbed power (2, 4)	kW	15,7	18,7	22,0	25,0	30,0	32,7	35,4	43,8	45,1	56,1	60,1
Air treatment section	Air flow	m³/h	9600	11900	14600	14600	17400	19800	22800	22800	29500	35200	44300
	Available static pressure	PA	250	250	250	250	250	250	250	250	250	250	250
	Fan	N°	1	1	2	2	2	2	2	2	2	4	4
	Filter	Tipo	G4	G4	G4	G4	G4	G4	G4	G4	G4	G4	G4
Condensing section	Compressor	N°	2	2	2	2	4	4	4	4	4	4	4
	Refrigerant circuits	N°	1	1	1	1	2	2	2	2	2	2	2
	Capacity steps	N°	2	2	2	2	4	4	4	4	4	4	4
Hot water coil	Heating capacity (5)	kW	85	100	125	125	150	175	200	200	250	300	350
	Air pressure drops	PA	30	31	31	31	31	30	36	36	35	35	35
	Water flow (5)	l/s	2,03	2,39	2,99	2,99	3,58	4,18	4,78	4,78	5,97	7,17	8,36
	Water pressure drops	kPa	45	47	48	48	49	44	51	51	53	57	55
	Water connections	"G	1"½	1"½	1"½	1"½	1"½	2"	2"	2"	2"	2 ½"	2 ½"
Electrical heater	Power supply	V/Ph/Hz	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50
	Heating capacity	kW	15	21	27	27	27	41	41	41	41	48	55
	Max absorbed current	A	22	30	39	39	39	59	59	59	59	69	79
	Steps	N°	2	2	2	2	2	4	4	4	4	4	4
Electrical characteristics	Power supply	V/Ph/Hz	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50	400/3/50
	Max. running current	A	47	54	66	72	83	101	106	115	145	169	191
	Max. starting current	A	158	173	162	187	163	212	225	211	259	311	380
Sound pressure	STD/MS versions (6)	dB(A)	68	69	68	68	69	71	72	72	72	72	72
Weights	Transport weight STD	kg	1030	1185	1180	1280	1390	1520	1900	1950	2270	2480	3320
Weights	STD operating weight	kg	1010	1170	1160	1260	1370	1500	1870	1920	2240	2440	3270

Dimensions

			182	202	242	262	304	364	404	484	524	604	804
L	STD	mm	3435	3435	3595	3595	4725	4775	4775	4775	4775	4775	6800
L	MS	mm	3885	3885	4045	4045	5170	5220	5225	5225	5225	5225	7250
W	STD	mm	2200	2200	2200	2200	2200	2200	2200	2200	2200	2200	2200
W	MS	mm	2200	2200	2200	2200	2200	2200	2200	2200	2200	2200	2200
H	STD	mm	2125	2365	2365	2365	2365	2365	2365	2365	2365	2505	2505
H	MS	mm	2125	2365	2365	2365	2340	2340	2365	2365	2365	2505	2505

Notes

1 Evaporator inlet air temperature 27 °C d.b./19 °C w.b.; ambient air temperature 46 °C.
2 Total power consumption.
3 Evaporator inlet air temperature 27 °C d.b./19 °C w.b.; ambient air temperature 35 °C.
4 Condenser inlet air temperature 20 °C, ambient air temperature 7 °C d.b./6 °C w.b.
5 Inlet air temperature 20 °C, water temperature 70/60 °C.
6 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
N.B. (1) Weights of WP versions are specified on technical brochure.