JWR 14÷34 S/IK/P/A

Home KTK Products Junior line - Small and medium size liquid Chillers and Heat Pumps AIR COOLED LIQUID CHILLERS AND HEAT PUMPS JWR 14÷34 S/IK/P/A
JWR 14÷34 S/IK/P/A

JWR 14÷34 S/IK/P/A

High efficiency air cooled liquid Chillers and Heat Pumps with EC Inverter Plug-Fans, Inverter Scroll compressor and plate exchanger for indoor ducted installation

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The high efficiency indoor liquid Chillers of the JWR 14÷34 S/IK/P/A series, with R410A refrigerant and EC Inverter Plug-Fans, are designed for small and medium domestic or service sector systems with particular difficulty in positioning units outside the building.
With a prepainted plate structure, these units can be combined with Fan Coil units or with intermediate heat exchangers for process cooling applications.
These units are equipped with particular technical and design adjustments that enable an immediate and efficient use, in addition to remarkably quiet operation and a significant useful head of the fan.
A wide range of accessories, factory fitted or supplied separately, complete the outstanding versatility and functionality of the series.


The units are compliant to the ErP Regulation.
On request, units can be supplied with R452B or R454B refrigerant.

Versions

  • JWR - Cooling only
  • JWR/WP - Reversible Heat Pump

Power range

  • 12.0-36.0 kW
  • 3.5-10.0 Ton

Features

  • Self-supporting prepainted steel frame. Sound-proofed compressor compartment (14÷34).
  • DC INVERTER Scroll compressor with internal overheat protection, crankcase heater and soundproofing cover (14÷34).
  • High efficiency reverse blade EC INVERTER PLUG-FAN, with electronic speed control.
  • Condenser made of copper tubes and aluminium finned coil, complete with condensate drain pan for WP version only.
  • Evaporator AISI 316 stainless steel braze welded plates type, complete with water differential pressure switch. On the Heat Pump units it is always installed an antifreeze heater.
  • Electronic expansion valve.
  • R410A refrigerant. On request R452B or R454B refrigerant.
  • Electrical board includes: main switch with door safety interlock, fuses, compressors (21÷20) and pump remote control switch.
  • 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 and high and low pressure transducers on cooling circuit.
  • Functioning in heating mode with outside air temperature down to -15 °C.
  • Microprocessor control and regulation system.
  • Advanced functions: remote set-point with 0-10V signal, remote set-point with 4-20mA signal, remote signal for second set-point activation, demand limit from digital input, management of hybrid systems, management of domestic hot water production.

Factory fitted accessories

  • BT Low water temperature kit
  • TX Coil with pre-coated fins
  • PS Single circulating pump
  • GS Single circulating pump gasket for glycol >30%
  • FE Antifreeze heater for evaporator

Loose accessories

  • CR Remote control panel
  • IS Modbus RTU protocol, RS485 serial interface
  • RP Coils protection metallic guards
  • FP Coils protection metallic guards with filter
  • AG Rubber shock absorbers
14161820242734
CoolingCooling capacity (1)kW12,415,719,022,425,830,535,9
Absorbed power (1)kW4,35,46,57,79,310,312,1
EER (1)2,882,912,922,912,772,962,97
Cooling (EN14511)Cooling capacity (1)kW12,415,719,022,325,830,435,8
Absorbed power (1)kW3,95,16,27,48,49,411,3
EER (1)3,143,103,073,023,083,243,18
SEER (2)4,324,304,234,334,324,104,12
Energy Efficiency (2)%170169166170170161162
HeatingHeating capacity (3)kW14,117,520,924,828,734,340,4
Absorbed power (3)kW4,55,46,47,59,410,712,6
COP (3)3,133,243,273,313,053,213,21
Heating (EN14511)Heating capacity (3)kW14,217,621,024,928,834,440,5
Absorbed power (3)kW4,25,16,17,28,59,811,8
COP (3)3,403,463,443,453,393,503,43
SCOP (4)3,583,573,683,703,914,083,79
Energy Efficiency (4)%140140144145153160149
Energy Class (5)A+A+A+A+A++A++A+
SCOP (6)2,892,842,872,862,922,932,90
Energy Efficiency (6)%113111112111114114113
Energy Class (7)A+A+A+A+A+A+A+
CompressorQuantityn°1111111
EvaporatorWater flowl/s0,590,750,911,071,231,451,71
Pressure dropskPa25202930202931
Water connections"G1 ¼"1 ¼"1 ¼"1 ¼"1 ¼"1 ¼"1 ¼"
Fan available static pressurePa115115115115150150150
Electrical characteristicsPower supplyV/Ph/Hz400/3+N/50400/3+N/50400/3+N/50400/3+N/50400/3+N/50400/3+N/50400/3+N/50
Max. running currentA14141619222225
Max. starting currentA991011121213
Unit with pumpPump available static pressurekPa76827060140115150
Water connections"G1 ¼"1 ¼"1 ¼"1 ¼"1 ¼"1 ¼"1 ¼"
Sound pressure (8)dB(A)58585961626364
WeightsTransport weightkg203213215217353359374
Operating weightkg205215217219356362377

Dimensions

14161820242734
LSTDmm900900900900150015001500
WSTDmm690690690690800800800
HSTDmm1750175017501750160016001600

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 Seasonal energy efficiency of heating at medium temperature with average climatic conditions. According to EU Regulation n. 813/2013.
  • 7 Seasonal energy efficiency class of heating at medium temperature with average climatic conditions. According to EU Regulation n. 811/2013.
  • 8 Sound pressure level measured in free field conditions at 1 m from the unit. According to ISO 3744.