CG-SVX027D-GB
32
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
Electrical Data
External Auto/Stop
If the unit requires external auto/stop function, the
installer must provide leads from the remote contacts on
unit main controller 1A2 – 1A3:
• 6S1-1: Module 1A2 Terminals block J5 – ID6 for circuit 1
auto/stop
• 6S1-2: Module 1A3 Terminals block J4 – ID4 for circuit 2
auto/stop
Chiller will run normally when the contacts are closed.
When they open, the compressor(s), if operating, will
cycle off. Unit operation will be inhibited. Closure of
the contacts will permit the unit to return to normal
operation. Field-supplied contacts for a low voltage
connections must be compatible with dry circuit 24 VDC
for a 12 mA resistive load. Refer to the field diagrams
shipped with the unit for further information.
Heat Pump Control and Heating /
Cooling Selection
On Heat Pump version units (CXAX), change for Heating/
Cooling can be done remotely, from a remote contact
on unit main controller 1A2, Terminal block J5 – ID7,
identified on the wiring diagram as 6S4.
A setpoint, contact closure, or communicated command
can select the unit heat/cool mode to be heat or cool. The
contact closure or communicated command allows the
user to remotely change the Heat/Cool operating mode.
The Setpoint can be changed from the Unit Controller
Front Panel. By changing this setpoint to ‘Heat’ the unit
will then switch to heating mode and control the leaving
water temperature to the hot water setpoint. By changing
this setpoint to ‘Cool’ the unit will switch to the cooling
mode, and control the leaving water temperature to the
Chilled water setpoint.
The operation of the unit is controlled by the Heat/Cool
command. Switching from cooling to heating will stop
all running compressors. After a 10 second delay the
4-way reversing valve will be switched into the heating
mode direction and the unit will run based on the
evaporator leaving water temperature compared to the
hot water setpoint.
Switching from heating to cooling will stop all running
compressors. After a 10 second delay the 4-way
reversing valve will be switched into the cooling mode
direction and the unit will run based on the evaporator
leaving water temperature compared to the chilled water
setpoint.
When the unit is stopped and there is a command to
switch from cooling to heating or heating to cooling the
10 second delay will been forced when switching the
4-way reversing valve.
Auxiliary Setpoint
If the unit requires an external Auxiliary Leaving Water
Temperature Setpoint, the installer must provide leads
from the remote contacts on unit main controller 1A4:
• 6S5: Terminal block J4 – ID1/IDC1
Chiller will operate normally, using the LWT Setpoint,
stablished on the unit controller, whenever the 6S5
contact will be closed, the unit will move to the Auxiliary
LWT Setpoint.
External Chilled Water Setpoint
(ECWS/EHWS) Option
Unit auxiliary controller (1A4) provides inputs that accept
either 0-20mA or 4-20mA signals to set the external
chilled/hot water setpoint (ECWS/EHWS). Important,
this is not a setpoint, this input defines a reset function.
This input is primarily used with generic BAS (Building
Automation Systems).
The chilled water setpoint may be changed from a
remote location by sending either 0-20mA or 4-20mA
signal to the the terminal block on 1A4: J9-B1/GND. The
0-20mA or 4-20mA each corresponds to a reset of 0-20°C
applied on the water setpoint (added on the chilled water
setpoint, subtracted on the hot water setpoint.
Following equation
Current Signal (0-20mA)
Current Signal (4-20mA)
(Default setting)
As processed by
Chiller Controller
Water Setpoint Reset (°C) =
current(mA)
Water Setpoint Reset (°C) =
20*(mA – 4) / 16
If the ECWS/EWHS input develops an open or short,
the LLID willl report either a very high or very low
value back to the main processor. This will generate
an informational diagnostic and the unit will default to
using the main unit controller chilled water setpoint.
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