CG-SVX027E-GB
31
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
Electrical Data
Control Power Supply
Note: it is highly recommendable to read this section
within the wiring diagrams, where the different
components mentioned here are referenced.
General
Unit is equipped with a control transformer (1T1), factory
mounted, wired and tested, therefore it is not necessary
to provide additional control power voltage to the unit.
No other loads should be connected to the control
power transformer. All units are factory-connected for
appropriate labelled voltages.
Interconnecting Wiring /
Low Voltage Wiring
WARNING Ground Wire!
All eld-installed wiring must be completed by a
qualied personnel, and must comply with local codes
and regulations. Failure to follow those instructions
could result on death or serious injury. The remote
devices described on the sections ahead require low
voltage wiring. All wiring to and from these remote
input devices to the Control Panel must be made with
shielded, twisted pair conductors. Be sure to ground the
shielding only at the panel.
Note : To prevent control malfunctions, do not run
low voltage wiring (< 30V) in conduit with conductors
carrying more than 30V.
Customer Options
Alarm and Status Relay Outputs (Programmable Relays)
A programmable relay concept provides for enunciation
of certain events or states of the chiller, selected
from a list of likely needs, while only using physical
ouputs relays, as shown on the eld diagram. Four
electromechanical relays board are provided, as part of
the customer input/ouput option.
The digital outputs must be properly protected against
short circuits and overloads.
The minimum cross-section of the cables used for the
digital outputs must be 1.5 mm2.
Relay characteristics
relay ratings :
at 120 VAC : 7.2 Amps resistive / 2.88 Amps pilot duty
at 240 VAC: 5 Amps general purpose.
The list of events/states that can be assigned to the
programmable relays can be found on the follow table.
The relay will be energized when the event/state occurs:
External Auto/Stop
If the unit requires external auto/stop function, the
installer must provide leads from the remote contacts on
unit main controller. Operation is described in document
CNT-SVU006.
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.
Operation is described in document CNT-SVU006.
Auxiliary Setpoint
If the unit requires an external Auxiliary Leaving Water
Temperature Setpoint, the installer must provide leads
from the remote contacts on unit Auxilairy Setpoint
binary Input terminal.
Chiller will operate normally, using the LWT Setpoint,
stablished on the unit controller, whenever the contact
will be closed, the unit will move to the Auxiliary LWT
Setpoint.
External Chilled Water Setpoint
(ECWS/EHWS) Option
External analog signal can be used to change active
chilled/hot water setpoint through either 0-10VDC or
4-20mA signals to set the external chilled/hot water
setpoint (ECWS/EHWS). Operation is described in
document CNT-SVU006.
External Demand Limit Setpoint
(EDLS) Option
External analog signal can be used to change demand
limit setpoint through either 0-10VDC or 4-20mA signals.
Operation is described in document CNT-SVU006.
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