CG-SVX027D-GB
48
4 UNT-PRC002-GB
Technical Data
FWD 08 12 20 30 45
Power supply (V/Ph/Hz) 230/1/50
Capacities
Cooling capacity on water (1) (kW) 5,2 8,3 15 18,8 30,1
Heating capacity on water (2) (kW) 6,3 11,9 18,9 20,9 38,2
Fan motor (type) 2 x direct drive centrifugal
Fan power input (3) (kW) 0,23 0,46 0,65 1,04 1,51
Current amps (3) (A) 1,1 2,2 3,1 4,7 5,5
Start-up amps (A) 3,2 5,5 9,3 14,1 16,5
Air flow
minimum (m
3
/h) 490 980 1400 1800 2700
nominal (m
3
/h) 820 1650 2300 3000 4500
maximum (m
3
/h) 980 1970 2600 3600 5400
Main coil
Water entering/leaving connections (type) ISO R7 rotating female
(Dia) 3/4" 3/4" 1 1/2" 1 1/2" 1 1/2"
Electric heater (accessory for blower only)
Electric power supply (V/Ph/Hz) 230/1/50 230/1/50 or 400/3/50 400/3/50 400/3/50 400/3/50
Heating capacity (kW) 2/4 8 10 12 12
Hot water coil (accessory for blower only)
Heating capacity (4) (kW) 6,3 12 17,4 22,4 34,5
G2 filter (filter box accessory)
Quantity 2 2 2 2 2
Dimensions ( LxWxth) (mm) 386x221x8 486x271x8 586x321x8 586*421*8 586*621*8
G4 filter (filter box accessory)
Quantity - 2 2 2 2
Dimensions ( LxWxth) (mm) - 486x264x48 586x314x48 586*414*48 586*614*48
Condensate pump (accessory) (type) Centrifugal
Water flow - lift height (l/h - mm) 24 - 500
Not available for FWD30 and FWD45
Sound level (L/M/H speed)
Sound pressure level (5) (dB(A)) 36/40/43 38/41/44 46/50/53 47/52/57 47/52/58
Sound power level (5) (dB(A)) 46/50/53 48/51/54 56/60/63 57/62/67 57/62/68
Unit dimensions
Width x Depth (mm) 890 x 600 1090 x 710 1290 x 820 1290 x 970 1290 x 1090
Height (mm) 250 300 350 450 650
Shipped unit dimensions
Width x Depth (mm) 933 x 644 1133 x 754 1333 x 864 1333 x 1008 1333*1133
Height (mm) 260 310 360 460 660
Weight (kg) 32 46 61 76 118
Colour galvanised steel
Recommended fuse size
Unit alone (aM/gI) (A) 8/16 8/16 8/16 8/25 8/25
Unit with electric heater (gI) (A) 16 (2kW),25 (4kW) 40 (230V),3*16 (400V) 3*20 3*25 3*25
(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow
(2) Conditions: Water entering/leaving temperature: 50/45 °C, Air inlet temperature 20°C DB - Nominal air flow
(3) At high speed with nominal air flow.
(4) Water entering/leaving temperature 90/70 °C, air inlet temperature 20 °C DB, Nominal air flow.
(5) A rectangular glass wool duct 1m50 long is placed on the blower.The measurement is taken in the room containing the blower unit.
Heat exchanger operating limits:
FWD:
*water temperature: max 100° C
*absolute service pressure: min 1 bar/max 11 bars
Accessories - Hot water coil:
*water temperature: min. +2° C/max. 100° C
*absolute service pressure: min 1 bar/max 11 bars
Maintenance
Refrigerant Piping
The compressor suction and discharge connections
and piping are copper clad steel for easy brazing. In
most instances, piping may be reused. If piping is not
reusable, order the correct service parts. Cut all tubing
with a tubing cutter to prevent copper filings from
entering the system. Cut the tubing in a straight length
of pipe after the compressor connection has been
unsweated. The line can then be reinstalled using a slip
coupling and brazing.
Note: The compressor suction line configuration must
not be changed in any way. Changing compressor
suction line configuration will compromise proper oil
return to the compressor(s).
Compressor Electrical Terminal Box
Be sure to protect the terminal box when unbrazing or
brazing compressor refrigerant piping connections
Compressor Crankcase Heaters
Compressor crankcase heaters must be energized
at least eight hours before starting the chiller. This is
required to boil refrigerant out of the oil before startup.
Ambient temperature is not a factor and the crankcase
heaters must always be energized prior to startup.
Condenser Maintenance
Condenser Coil Cleaning
Clean the condenser coils at least once a year or
more frequently if the unit is in a “dirty” environment.
A clean condenser coil will help to maintain chiller
operating efficiency. Follow the detergent manufacturer’s
instructions to avoid damaging the condenser coils.
Black epoxy coil protection (option on heat pump units)
It is recommended to clean the coils at unit start-up and
regularly to obtain optimum protection and life span of
the condenser coils. To clean the condenser coils use a
soft brush and a sprayer such as a garden pump type or
a high pressure type. A high quality detergent such as
Trane Coil Cleaner is recommended.
Note: If detergent mixture is strongly alkaline (pH value
greater than 8 .5), an inhibitor must be added.
Evaporator Maintenance
The Trane Model CGAX liquid chiller uses a brazed plate
heat paddle (BPHE) evaporator with factory installed
flow switch that is positioned in the evaporator water
pipe. The evaporator inlet also includes a water strainer
that must be kept in place to keep debris out of the
evaporator.
Note: Strainer maintenance is critical to proper operation
and reliability. Any particles larger than 1.6 mm entering
the BPHE evaporator may cause the evaporator to fail,
requiring replacement.
Acceptable BPHE evaporator water flow rate is 1.4 to
4.2 l/ min per nominal unit kW capacity. To maintain
12-7°C in/out chilled water temperatures, the nominal
water flow rate is 2.8 l/min per cooling kW. Minimum
water flow rate must be maintained to avoid laminar
flow, potential evaporator freezing, scaling and poor
temperature control. Maximum water flow is 6 m/s. Flow
rates greater than this will cause excessive erosion. The
BPHE evaporator is difficult to clean should it become
plugged with debris. Indications of a plugged BPHE
evaporator include “wet” suction due to lack of heat
exchange, loss of superheat control, discharge superheat
less than 35°C, compressor oil dilution and/or starvation
and premature compressor failure.
Evaporator replacement
If the CGAX evaporator requires replacement, it is very
important that the new evaporator be replaced correctly
and with the correct refrigerant and water piping
connections. The refrigerant inlet/ liquid connection is at
the bottom of the evaporator and the refrigerant outlet/
suction connection is at the top of the evaporator and
both are on the same side. Pay particular attention to
evaporators with dual circuits. Avoid cross-circuiting
when installing the new evaporator.
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