FORM QWC3-EG1 (217)
QUANTECH
5
Quantech QWC3 Water-Cooled chillers provide chilled water for all air conditioning ap-
plications that use central station air handling or terminal units. They are completely self-
contained and are designed for indoor (new or retrofit) installation. Each unit includes
hermetic scroll compressors, a liquid evaporator, water cooled condenser, and a user-
friendly, Microcomputer Control Center mounted on a rugged steel base. The units are
produced at an ISO 9001 registered facility. The QWC3 chillers are rated in accordance
with AHRI Standard 550/590.
The chiller will be completely assembled with all interconnecting refrigerant piping and
internal wiring, ready for field installation.
The unit will be pressure-tested, evacuated, and charged with Refrigerant-410A, and syn-
thetic oil (POE). There will be an operational test, with water flowing through the evapora-
tor, to check that each control device operates correctly.
The unit can be covered with an optional overspray coat of Caribbean Blue enamel. Units
are designed in accordance with NFPA 70 (National Electric Code), ASHRAE/ANSI 15
Safety Code for Mechanical Refrigeration. All units are produced at an ISO 9001 regis-
tered facility. All QWC3 chillers are rated in accordance with AHRI Standard 550/590 at
AHRI conditions.
COMPRESSORS
The chiller has suction-gas cooled, hermetic, scroll compressors. The QWC3 compres-
sors incorporate a compliant scroll design in both the axial and radial direction. All rotating
parts are statically and dynamically balanced. A large internal volume provides greater
liquid tolerance. Compressor crankcase heaters are also included for extra protection
against liquid migration. All compressors are mounted on isolator pads to reduce trans-
mission of vibration to the rest of the unit.
EVAPORATOR
The dual-circuit evaporator will be the direct-expansion type, with refrigerant in the tubes
and chilled liquid flowing through the baffled shell. The design working pressure of the
shell (liquid) side will be 150 PSIG (10.3 bar), and 400 PSIG (27.6 bar) for the tube (re-
frigerant) side.
The evaporator will be constructed and tested in accordance with the applicable sections
of the ASME Pressure Vessel Code, Section VlII, Division (1). The water side will be ex-
empt per paragraph U-1, (C), (6).
The removable heads will allow access to the internally enhanced, seamless, copper
tubes. Vent and drain connections will be included. Nozzle connections are grooved to
accept ANSI/AWWA C-606 couplings.
The evaporator will be covered with 3/4” (19.1 mm) flexible, closed-cell, foam insulation
(K = 0.25).
Equipment Overview
Summary of Contents for QWC3
Page 1: ...MODEL QWC3 WATER COOLED SCROLL LIQUID CHILLER 50 200 TONS 60Hz R 410a FORM QWC3 EG1 217 ...
Page 4: ...QUANTECH FORM QWC3 EG1 217 4 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 39: ...FORM QWC3 EG1 217 QUANTECH 39 Unit Dimensions Four Compressor Cont d ...
Page 41: ...FORM QWC3 EG1 217 QUANTECH 41 Unit Dimensions Five Six Compressor Cont d ...
Page 56: ...QUANTECH FORM QWC3 EG1 217 56 Typical Control Panel Wiring 4 COMPRESSOR UNITS LD21794a ...
Page 57: ...FORM QWC3 EG1 217 QUANTECH 57 Typical Control Panel Wiring Cont d 4 COMPRESSOR UNITS LD21794b ...