CG-SVX027D-GB
35
11UNT-PRC002-GB
Sound power levels
Discharge
Measurement conditions:
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
long) fixed to its discharge opening.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 55 50 42 37 37 31 30 46
FWD 08 2 57 54 47 40 30 38 40 50
3 58 57 50 42 32 40 43 53
1 57 51 45 42 34 33 28 48
FWD 10 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 57 51 45 42 34 33 28 48
FWD 12 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 56 62 50 48 39 38 36 56
FWD 14 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
1 57 63 51 49 40 39 37 57
FWD 20 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
Intake
Measurement conditions:
Measurements taken at the horizontal air intake.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 56 55 55 53 46 45 42 57
FWD 08 2 63 62 60 60 53 53 53 64
3 66 65 63 62 56 55 57 67
1 62 58 55 58 51 48 44 61
FWD 10 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 62 58 55 58 51 48 44 61
FWD 12 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 66 65 65 65 57 50 46 68
FWD 14 2 73 72 69 71 64 59 57 74
3 78 76 73 75 69 64 63 78
1 68 72 64 64 56 52 50 69
FWD 20 2 76 76 68 71 65 61 61 75
3 78 79 71 74 69 66 66 78
Operating Principles
This section contains an overview of the operation of
CGAX and CXAX air cooled chillers, equipped with
microprocessor based control systems.
Note: To ensure proper diagnosis and repair, contact a
qualified service organization if a problem should occur.
General
CGAX and CXAX chillers are scroll compressor, single or
dual circuit air-cooled chillers. These units are equipped
with unit-mounted starter/control panels and operate
with R410A refrigerant.
The basic components on the CGAX/CXAX are:
• Unit-mounted panel containing starter and unit
controller
• Scroll compressors
• Brazed plate evaporator
• Air-cooled condenser with sub-cooler
• Electronic expansion valve
• Related interconnecting piping
Refrigerant Cycle
Refrigerant cycle is similar to other Trane Scroll
compressor chillers. Conquest chillers use brazed plate
evaporator and air-cooled condenser. Compressors
use suction gas cooled motors and an oil management
system to provide almost oil-free refrigerant to the
condenser and evaporator for maximum heat transfer
while lubricating and sealing compressor rotors and
bearings. The lubrication system helps to assure long
compressor life and contributes to quite operation.
Liquid refrigerant coming from the condenser coils,
are metered into the brazed plate evaporator using an
electronic expansion valve to maximize chiller efficiency
at full and part load operation.
Chillers are equipped with a unit-mounted starter and
control panel. Microprocessor-based unit controller
provide accurate chilled water control an monitoring,
protection and limit functions. If problems occurs the
unit controller provide diagnostic messages to help the
operator in troubleshooting.
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