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Installation and operation manual
3
EUWA(*)5~24KBZW1
Packaged air-cooled water chillers
4PW61653-1 – 07.2010
TECHNICAL SPECIFICATIONS
Single circuit units
Double circuit units
Operation range Main components (See figure 1)
Displayed unit = EUWAB12KBZW1.
1 Condenser
The function of the condenser is to change the state of the
refrigerant from gaseous to liquid. The heat gained by the gas in
the evaporator is discharged through the condenser to the
ambient air, and the vapour condenses to liquid.
2 Compressor
The compressor acts as a pump and circulates the refrigerant in
the refrigeration circuit. It compresses the refrigerant vapour
coming from the evaporator at the pressure at which it can easily
be liquefied in the condenser.
3 Refrigerant filter
The filter installed behind the condenser removes small particles
from the refrigerant to prevent blockage of the tubes.
4 Expansion valve
The liquid refrigerant coming from the condenser enters the
evaporator via an expansion valve. The expansion valve brings
the liquid refrigerant to a pressure at which it can easily be
evaporated in the evaporator.
5 Evaporator
The main function of the evaporator is to take heat from the
water that flows through it. This is done by turning the liquid
refrigerant, coming from the condenser, into gaseous
refrigerant.
6 Pressure port refrigerant circuit
These ports make it possible to measure refrigerant pressure in
the pipes.
7 Charge valve
Allows refrigerant charge in the circuit.
8 Water in/outlet connection
The water inlet and outlet connection allows an easy connection
of the unit to the water circuit of the air handling unit or industrial
equipment.
Unit (Hp) 5 8 10 12
Version N P B N P B N P B N P B
Dimensions HxWxD
(mm)
1230x1290x734 1230x1290x734 1450x1290x734 1450x1290x734
Weight
• machine weight
(kg)
150 168 180 215 229 241 245 259 271 248 262 274
• operation weight
(kg)
152 171 239 218 232 300 248 262 330 251 265 335
Connections
•water inlet
MBSP
1-1/4” 1-1/4” 1-1/4” 1-1/4”
•water outlet
MBSP
1-1/4” 1-1/4” 1-1/4” 1-1/4”
Internal water volume
(l)
23593359 3 3 59 3 4 60
Expansion vessel
•Volume
(l)
—1212—1212—1212—1212
• Pre-pressure
(bar)
1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
Safety valve water circuit (bar) 1x3.0 1x3.0 1x3.0 1x3.0 1x3.0 1x3.0 1x3.0 1x3.0
Unit (Hp) 16 20 24
Version N P B N P B N P B
Dimensions HxWxD
(mm)
1321x2580x734 1541x2580x734 1541x2580x734
Weight
• machine weight
(kg)
430 448 440 490 508 520 496 514 526
• operation weight
(kg)
436 457 525 496 518 586 503 524 592
Connections
•water inlet
MBSP
2” 2” 2”
•water outlet
MBSP
2” 2” 2”
Internal water volume
(l)
696561066710 66
Expansion vessel
•Volume
(l)
—1212—1212—1212
• Pre-pressure
(bar)
1.5 1.5 1.5 1.5 1.5 1.5
Safety valve water circuit (bar) 1x3.0 1x3.0 1x3.0 1x3.0 1x3.0 1x3.0
A
Outdoor temperature
a
Standard (water)
b
Option (glycol)
°C DB
°C dry bulb
LEWT
Leaving evaporator water temperature
Pull down operation area
Protect the water circuit against freezing.
When the units operate below –5°C and are installed in a
rather windy region, a windscreen is required.
4PW61653-1_digital_EN.book Page 3 Thursday, August 26, 2010 1:49 PM
6


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