Project: P0019 Consultant:

Location: Date: 2024-03-15

Tag: WCFX-E
PERFORMANCE SUMMARY
Location:

Screw Compressor Water Cooled Package Chiller

Model # WCFX10SR Component code AUB3RA4R
Manufacturer DBM Rating version WCFXE222

Physical Specifications
Compressors (Qty) MSC1210(1) Estimated/Approx. Shipping weight (lb) 3,656
Length (in) 123.38 Estimated/Approx. Operating weight (lb) 3,907
Width (in) 42.88 Refrigerant R134a
Height (in) 76.00 Approx. refrigerant charge (lb) 152

Cooling Conditions of service

Percent of full load 100% Unit power (kW) 41.65
Capacity (Tons) 57.41 Cooling efficiency (kW/Ton) 0.7255
NPLV.IP (kW/Ton) 0.4982

Evaporator Condenser
Model (Qty) B3R(1) Model (Qty) A4R(1)
Number of passes 2.0 Number of passes 2.0
Fluid Water Fluid Water
Fluid flow rate (USgpm) 151.3 Fluid flow rate (USgpm) 185.3
Pressure drop (psi/ft.H2O) 3.47/8.01 Pressure drop (psi/ft.H2O) 4.63/10.7
Entering fluid temp. (°F) 53.60 Entering fluid temp. (°F) 89.60
Leaving fluid temp. (°F) 44.60 Leaving fluid temp. (°F) 98.60
Fouling factor (h·ft²·°F/Btu) 0.000100 Fouling factor (h·ft²·°F/Btu) 0.000250
Fluid freezing point (°F) 32.00 Fluid freezing point (°F) 32.00

Electrical characteristics
Unit power supply 400V/3P/50.0Hz Comp. rated amps(A) 71/0/0
Unit max. fuse size(A) 150 Comp. 1st step inrush amps(A) 196/0/0
Unit min. circuit ampacity(A) 88 Comp. locked rotor amps(A) 413/0/0

Notes
- Certified in accordance with the AHRI Water Cooled Water- - Meets ASHRAE 90.1-2019 Path A and Path B chiller minimum
Chilling and Heat Pump Water-Heating Packages Using the efficiency guidelines
Vapor Compression Cycle Certification Program,which is based - Unit dimension stated in Physical Specification is for 2 passes
on AHRI Standard-550/590 (I-P) and AHRI Standard 551/591 vessels. 3 passes and flanges water connection may increase
(SI). Certified units may be found in the AHRI Directory at unit length up to 6”.
www.ahridirectory.org. - Please consult factory for unit dimensions with different side of
- Refrigerant charge may vary. Unit nameplate will show final water connections and Marine Water Box options.
factory charge

NPLV.IP Points at GB Rating Conditions

% Full load Tons Unit kW kw/ton Evap. Flow(USgpm) Cond. EFT(°F) Cond. Flow(USgpm)
100% 57.41 41.65 0.7255 151.3 89.60 185.3
75.0% 43.06 23.55 0.5471 151.3 77.27 185.3
50.0% 28.71 12.71 0.4426 151.3 65.00 185.3
25.0% 14.35 8.247 0.5746 151.3 65.00 185.3

Part load points

% Full load Tons Unit kW kw/ton Evap. Flow(USgpm) Cond. EFT(°F) Cond. Flow(USgpm)
100% 57.41 41.65 0.7255 151.3 89.60 185.3
90.0% 51.67 33.50 0.6484 151.3 84.67 185.3
80.0% 45.93 26.52 0.5775 151.3 79.74 185.3
70.0% 40.19 20.91 0.5205 151.3 74.80 185.3
60.0% 34.45 16.01 0.4650 151.3 69.87 185.3
50.0% 28.71 12.71 0.4426 151.3 65.00 185.3
40.0% 22.96 10.68 0.4651 151.3 65.00 185.3
30.0% 17.22 9.166 0.5322 151.3 65.00 185.3

355100 15-Mar-24 Page 1 of 3 SPEC ver. 20400

 Project: P0019 Consultant:

Location: Date: 2024-03-15

Tag: WCFX-E
PERFORMANCE SUMMARY
Location:

Standard Equipment
Compressor
▪ Infinite slide valve unloading capacity control ▪ Compressor Vapour Injection (only available in selected models)
▪ Integral high efficiency oil separator ▪ Compressor oil sump heater(s)
▪ Suction check valve and service valve ▪ Double delta Starter
▪ Integral lubrication system using pressure differential ▪ Pressure relief valve if required
▪ Discharge check valve (Multiple compressor unit) or service ▪ Solid state motor protector
valve (Single compressor units) ▪ Optical oil level sensor
▪ One (1) year warranty ▪ Suction Filter
▪ Fully hermetic design
Evaporator/Condenser
▪ Flooded Design for higher capacity and easy maintenance ▪ Victaulic groove water connections
▪ Full pump down capacity in condenser ▪ 1" thick PE foam closed cell suction line insulation/thermal
▪ Cleanable integral fin copper tubes for easy serviceability conductivity 0.040W/m.K at 40C (0.28Btu in/hr.ft2F at 104F)
▪ 1"thick PE foam closed cell evaporator insulation,thermal ▪ Pressure relief valve(s), 3/4"FPT
conductivity 0.040W/m.K at 40 C(0.28Btu in/hr.ft2F at 104 F .) ▪ Drain and vent plugs
▪ Removable water heads ▪ Carbon steel header, Shell and Tube sheet
Refrigerant Specialties
▪ High Pressure relief valves ▪ Discharge check valves on multiple compressor units
▪ Refrigerant charge ▪ Replaceable core filter drier
▪ Sight glass with moisture indicator ▪ Automatic oil balancing control
▪ Oil Charge ▪ Charging and gauge connections
Standard Electrical Components
▪ Compressor MCCB and contactors ▪ Current transformer
▪ Single point power connection ▪ On-off switch in the unit control circuit and each compressor
▪ Compressor overloads control circuit
▪ Control circuit transformer ▪ Under voltage/Phase failure-Phase sequence protection
▪ Low voltage/phase failure/phase reversal protection
Warranty and Testing Unit Protection
▪ Standard one year warranty on unit and on compressors ▪ High and low pressures
▪ Factory run tested ▪ High discharge temperature
▪ Freeze protection
▪ Low pressure differential
▪ Low oil level
▪ Compressor run error and over current
▪ Chilled water flow loss
▪ Compressor anti-recycle
▪ Sensor error
Controllers
▪ Vision Advanced microprocessor based DDC controller with ▪ No. of compressor starts
touch screen display panel with menu driven software digital ▪ Elapsed run time, each compressor
readout, keypad ▪ Oil flow status
▪ Selection on English (Imperial) or metric display units ▪ Water flow switch status
▪ Leaving chilled fluid temperature ▪ External stop/start command status
▪ Evaporator and condenser pressure ▪ Identification of up to 99 most recent alarms with critical data
▪ Single phase amp draw, each compressor stamping
Analog Readouts Digital Readouts
▪ Evaporator and condenser refrigerant pressure ▪ Compressor contactor ▪ Elapsed compressor
▪ Compressor amps(each compressor) status runtime
▪ Water sensor:Evaporator leaving -Standard sensor to provide ▪ Oil flow status ▪ External enable/disable
temperature readout for water leaving the evaporator ▪ Number of compressor status
starts ▪ Flow switch status
Capacity control Setpoints Additional Features as Factory Installed Options
▪ Leaving water temperature ▪ Amp limit ▪ Controller monitoring of return chilled water and entering and
▪ Freeze up temperature ▪ Ramp up leaving condenser water
▪ High and low pressure ▪ Unit mounted disconnect switch 400 to 575 volts applications
▪ Various BMS communication protocol's interface card

355100 15-Mar-24 Page 2 of 3 SPEC ver. 20400

 Project: P0019 Consultant:

Location: Date: 2024-03-15

Tag: WCFX-E
PERFORMANCE SUMMARY
Location:

355100 15-Mar-24 Page 3 of 3 SPEC ver. 20400

Dunham-Bush Industries Sdn. Bhd. (166302-K), Lot 5755-6, Kidamai Industrial Park, Bukit Angkat, 43000 Kajang, Selangor Darul Ehsan, Malaysia.
Tel:603-8924 9000 Fax:603-8739 5020 Email:info@dunham-bush.com