JWA/EP 051÷171.1 S/K/P

Home KTK Products Junior line - Liquid Chillers and Heat Pumps <200kW AIRCOOLED 4-PIPE MULTIFUNCTIONAL UNITS JWA/EP 051÷171.1 S/K/P
JWA/EP 051÷171.1 S/K/P

JWA/EP 051÷171.1 S/K/P

Aircooled 4-Pipe multifunctional units with axial fans, Scroll compressors and plate exchangers

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ENERGYPOWER is the range of high efficiency multifunctional units for 4-Pipe systems.
The units JWA/EP 051÷171.1 S/K/P feature R410A refrigerant and Scroll compressors activated in series based on the requested thermal load, to reach high EER/COP/TER and SEER/SCOP energy values. Thanks to the advanced control system, the units can simultaneously fulfill the heating, cooling and domestic hot water request of the building. The unit can manage the opposed thermal loads at the same time and reach the highest possible efficiency.
Are available as option the axial EC Inverter fans and the new EC Inverter fans with high available static pressure and efficiency for indoor ducted installation.
The units are designed for hot water production up to 55°C.
The units are compliant to the ErP Regulation.
On request, units can be supplied with R452B or R454B refrigerant.

Versions

  • JWA/EP - Multifunctional unit
  • JWA/EP/SSL - Super silenced multifunctional unit

Power range

  • 49.0-168 kW
  • 14.0-48.0 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.
  • Copper tube and aluminum finned coil.
  • Condenser AISI 316 stainless steel braze welded plates type with one circuit on the refrigerant side and one on the water side, complete with water differential pressure switch. On the units it is always installed an antifreeze heater.
  • Evaporator AISI 316 stainless steel braze welded plates type with one circuit on the refrigerant side and one on the water side, complete with water differential pressure switch. On the units it is always installed an antifreeze heater.
  • Electronic expansion valve.
  • Electronic high and low pressure gauges.
  • R410A refrigerant. On request R452B or R454B refrigerant.
  • Electrical board includes: main switch with door safety interlock, fuses, thermal protection relays for compressors and thermocontacts for fans.
  • Condensing Control is included: electronic proportional device that ensures efficient and continuous functioning of the unit with outside air temperature down to –20 °C in cooling mode. It also allows to reduce the sound level especially at night. It consists of a fans speed controller with continuous speed regulation, high and low pressure transducers on cooling circuit and an electrical heater on electrical board.
  • Functioning in heating mode with outside air temperature down to -15 °C.
  • Microprocessor control and regulation system.

Factory fitted accessories

  • IM Automatic circuit breakers
  • PFC1 Power factor correction condensers (cosφ 0,95)
  • SL Unit silencement
  • RFM Cooling circuit shut-off valve on discharge line
  • RFL Cooling circuit shut-off valve on liquid line
  • BT Low water temperature kit
  • EC EC Inverter fans
  • ECH EC Inverter fans with high available static pressure
  • TX Coil with pre-coated fins
  • PSC Single circulating pump cooling side
  • PSIC Inverter single circulating pump cooling side
  • PDC Double circulating pump cooling side
  • PDIC Inverter double circulating pump cooling side
  • PSH Single circulating pump heating side
  • PSIH Inverter single circulating pump heating side
  • PDH Double circulating pump heating side
  • PDIH Inverter double circulating pump heating side
  • PSC+PSH Single circulating pump cooling side + heating side
  • PSIC+PSIH Inverter single circulating pump cooling side + heating side
  • PDC+PDH Double circulating pump cooling side + heating side
  • PDIC+PDIH Inverter double circulating pump cooling side + heating side
  • GS Single circulating pump gasket for glycol >30%
  • GD Double circulating pump gaskets for glycol >30%
  • GH Single circulating pump cooling side + heating side gaskets for glycol > 30%
  • GY Double circulating pump cooling side + heating side gaskets for glycol > 30%
  • FNC Antifreeze heater for pipes cooling side
  • FGC Antifreeze heater for single pump and pipes cooling side
  • FMC Antifreeze heater for double pump and pipes cooling side
  • FNH Antifreeze heater for pipes heating side
  • FGH Antifreeze heater for single pump and pipes heating side
  • FMH Antifreeze heater for double pump and pipes heating side
  • SS Soft start
  • TS Touch Screen Interface
  • WM Web Monitoring - Wireless remote monitoring (GPRS/EDGE/4G/TCP-IP)
  • IS Modbus RTU protocol, RS485 serial interface
  • IST Modbus TCP/IP protocol, Ethernet port
  • ISB BACnet MSTP protocol, RS485 serial interface
  • ISBT BACnet IP protocol, Ethernet port
  • ISS SNMP protocol, Ethernet port
  • IAA Remote set-point, 4-20mA signal
  • IAS Remote signal for second set-point activation
  • IAV Remote set-point, 0-10V signal
  • IDL Demand limit from digital input
  • CP Potential free contacts
  • GDS Leak detector
  • MN High and low pressure gauges

Loose accessories

  • CR Remote control panel
  • RP Coils protection metallic guards
  • AG Rubber shock absorbers
  • AM Spring shock absorbers
051061071081091101.1111.1121.1141171.1
Cooling onlyCooling capacity (1)kW48,655,963,272,281,895,1110122134168
Absorbed power (1)kW16,819,321,924,427,933,037,940,946,558,9
EER (1)2,892,902,892,962,932,882,902,982,882,85
Cooling only (EN14511)Cooling capacity (1)kW48,555,763,072,081,594,8110122134168
Absorbed power (1)kW17,019,622,324,828,433,638,441,647,259,8
EER (1)2,852,852,832,902,882,822,862,932,832,80
SEER (2)4,174,184,174,204,194,174,154,154,174,14
Energy Efficiency (2)%164164164165165164163163164163
Heating onlyHeating capacity (3)kW52,259,767,075,586,0105122134142184
Absorbed power (3)kW16,018,721,223,426,531,636,440,242,855,9
COP (3)3,263,193,163,233,253,323,353,333,323,29
Heating only (EN14511)Heating capacity (3)kW52,259,767,075,586,0105122134142184
Absorbed power (3)kW16,018,721,223,426,531,636,440,242,855,9
COP (3)3,263,193,163,233,253,323,353,333,323,29
SCOP (4)3,493,463,363,363,383,543,553,643,733,56
Energy Efficiency (4)%137135131131132139139143146139
Energy Class (5)A+A+A+A+----------
Cooling + HeatingCooling capacity (6)kW49,656,562,971,883,398,0112124140173
Heating capacity (6)kW64,973,982,594,1109127145161181224
Absorbed power (6)kW15,317,419,622,325,229,033,337,140,750,7
TER (6)7,487,497,427,447,617,767,737,687,887,82
Cooling + Heating (EN14511)Cooling capacity (6)kW49,556,462,771,683,097,7112124140173
Heating capacity (6)kW65,074,082,794,3109127146162181224
Absorbed power (6)kW15,717,920,223,026,030,034,438,442,152,5
TER (6)7,307,287,197,217,377,497,497,427,617,55
Evaporator - cooling sideWater flowl/s2,322,663,013,443,904,535,245,816,398,01
Pressure dropskPa35405148505542515160
Water connections"G2"1/22"1/22"1/22"1/22"1/22"1/22"1/22"1/22"1/23"
Condenser - heating sideWater flowl/s2,532,893,243,654,165,085,906,486,878,90
Pressure dropskPa32363943414142484951
Water connections"G2"1/22"1/22"1/22"1/22"1/22"1/22"1/22"1/22"1/23"
Electrical characteristicsPower supplyV/Ph/Hz400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50400/3/50
Max. running currentA4144556067778794102129
Max. starting currentA164166179192235265274307315364
Unit with pump - cooling sidePump available static pressurekPa145135115110130105100155150115
Water connections"G2 ½"2 ½"2 ½"2 ½"2 ½"2 ½"2 ½"2 ½"2 ½"3"
Unit with pump - heating sidePump available static pressurekPa145135115110130105100155150115
Water connections"G2 ½"2 ½"2 ½"2 ½"2 ½"2 ½"2 ½"2 ½"2 ½"3"
ECH fan available static pressureSTD version Pa9510095959510060506050
SSL version Pa70857070709050506050
Sound pressureSTD version (7)dB(A)63646465656768686970
With SL accessory (7)dB(A)61626263636566666768
SSL version (7)dB(A)58595960606163636465
Weight STD versionsTransport weightkg75476381791193410271072130013081492
Operating weightkg76577583092595010451095132513351535

Dimensions

051061071081091101.1111.1121.1141171.1
LSTDmm2350235023502350235023502350355035503550
SSLmm2350235023502350235035503550355035504700
WSTD/SSLmm1100110011001100110011001100110011001100
HSTD/SSLmm1950195019502250225022502250225022502250

Notes

  • 1 Chilled water from 12 to 7 °C, ambient air temperature 35 °C.
  • 2 Seasonal energy efficiency of cooling at low temperature. According to EU Regulation n. 2016/2281.
  • 3 Heated water from 40 to 45 °C, ambient air temperature 7 °C d.b./6 °C w.b.
  • 4 Seasonal energy efficiency of heating at low temperature with average climatic conditions. According to EU Regulation n. 813/2013.
  • 5 Seasonal energy efficiency class of heating at low temperature with average climatic conditions. According to EU Regulation n. 811/2013.
  • 6 Chilled water from 12 to 7 °C, heated water from 40 to 45 °C.
  • 7 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.
  • N.B. (1) Weights of SSL version are specified on technical brochure.