RTAXT/K/EC/FA 182÷604

Double skin packaged Roof Top units with Scroll compressors and EC Inverter Plug-Fans for 100% external air operation

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The double skin packaged Roof Top units, using R410A refrigerant, from the FRESH AIR series, are ideal for air conditioning large public areas such as buildings, shopping centres, canteens, restaurants, and clinics; or for industrial environments such as processing or food storage facilities.
Units are designed for operation with 100% of external air, to ensure maximum air renewal.
Those units feature Scroll compressors and EC Inverter Plug-Fans. The EC Inverter Plug-Fans with high energy efficiency backward blades are managed by an electronic control adjusting fans' rotational speed to adapt the air flow to the system capacity.
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/FA - Cooling only with EC Inverter Plug-Fans

Power range

54.0-197 kW
15.0-56.0 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; 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.
Electronic proportional device to decrease the sound level, with a continuous regulation of the fan speed. This device allows also the cooling functioning of the unit by external temperature till -5°C.
Microprocessor for the automatic control of the unit.
Operating outdoor ambient air temperature up to 52 °C.

Accessories

Factory fitted accessories

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
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
PF Differential pressure switch filters control
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

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
Cooling	Cooling capacity (1)	kW	53,8	64,2	77,9	91,1	104	118	132	148	171	197
	Absorbed power (1, 2)	kW	24,6	27,9	33,6	35,3	42,7	49,1	53,8	63,0	74,8	87,6
	Cooling capacity (3)	kW	52,9	63,9	77,7	90,9	104	117	131	148	170	196
	Absorbed power (2, 3)	kW	19,5	22,1	26,9	27,9	33,6	38,9	42,3	49,9	59,4	70,3
Air treatment section	Air flow	m³/h	3200	4200	5500	6300	7500	7500	8000	9200	10800	13000
	Available static pressure	PA	250	250	250	250	250	250	250	250	250	250
	Fan	N°	1	1	1	1	1	1	1	1	1	1
	Filter	Tipo	G4	G4	G4	G4	G4	G4	G4	G4	G4	G4
Condensing section	Compressor	N°	2	2	2	2	4	4	4	4	4	4
	Refrigerant circuits	N°	1	1	1	1	2	2	2	2	2	2
	Capacity steps	N°	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
	Max. running current	A	39	45	55	63	81	89	102	111	113	142
	Max. starting current	A	133	143	151	177	161	183	199	225	208	286
Sound pressure	STD version (4)	dB(A)	62	62	62	62	65	62	62	62	62	62
Weights	Transport weight	kg	595	665	795	955	1170	1190	1200	1405	1440	1640
Weights	Operating weight	kg	580	650	780	940	1155	1170	1180	1385	1420	1620

Dimensions

			182	202	242	262	304	364	404	484	524	604
L	STD	mm	2065	2315	2565	3690	3690	3690	3690	4110	4210	4315
W	STD	mm	2200	2200	2200	2200	2200	2200	2200	2200	2200	2200
H	STD	mm	2320	2320	2340	2340	2340	2340	2340	2340	2340	2340

Notes

1 Evaporator inlet air temperature 46 °C d.b./29 °C w.b., ambient air temperature 46 °C.
2 Total power consumption.
3 Evaporator inlet air temperature 35 °C d.b./27 °C w.b.; ambient air temperature 35 °C.
4 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.