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
CG-SVX051A-GB
64
Exchanger Maintenance
Coil Condenser Maintenance
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 unit operating
efficiency. Follow the detergent manufacturer’s
instructions to avoid damaging the condenser coils.
Remove whole sentence “Black epoxy coil protection
(option).
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.
BPHE Maintenance
The Trane Model CMAF Multi-Pipe unit uses brazed
plate heat exchangers (BPHE) with factory installed flow
switch that is positioned on the inlet water pipe. The
exchanger inlets must also include a water strainer that
must be kept in place to keep debris out of the plates.
Note: Strainer maintenance is critical to proper operation
and reliability. Any particles larger than 1.6 mm
entering the BPHE may cause strong damage, requiring
replacement.
BPHE exchangers are difficult to clean if clogged with
debris. Indications of a plugged BPHE exchanger
includes “wet” suction due to lack of heat exchange, loss
of superheat control, discharge superheat less than 35 K,
compressor oil dilution and/or starvation and premature
compressor failure.
BPHE replacement
If the CMAF BPHE chilled/hot water exchangers require
replacement, it is very important that the new exchanger
shall be replaced correctly and with the correct
refrigerant and water piping connections. The refrigerant
liquid connection is at the bottom of the exchanger and
the refrigerant gas outlet connection is at the top of the
exchanger and both are on the same face. Pay particular
attention because they are dual circuits. Avoid cross-
circuiting when installing the new exchanger.
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