8
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 (m3/h) 490 980 1400 1800 2700
nominal (m3/h) 820 1650 2300 3000 4500
maximum (m3/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-SVU010C-GB
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 four physical output relays, as shown in the field wiring diagram.
The four relays are provided (generally with a Quad Relay Output LLID) as part of the Programmable Relay Option.
The relays contacts are isolated Form C (SPDT), suitable for use with 120 VAC circuits drawing up to 2.8 amps
inductive, 7.2 amps resistive, or 1/3 HP and for 240 VAC circuits drawing up to 0.5 amp resistive.
The list of events/states that can be assigned to the programmable relays can be found in Table 2 Chiller events/
Status description. The relay will be energized when the event/state occurs.
Table 2 –
Chiller event/status descriptions
Alarm - Latching This output is true whenever there is any active latching shutdown diagnostic that targets the Unit, Circuit,
or any of the Compressors on a circuit.
Alarm - NonLatching This output is true whenever there is any active non-latching shutdown diagnostic that targets the Unit,
Circuit, or any of the Compressors on a circuit.
Alarm This output is true whenever there is any active latching or non-latching shutdown diagnostic that targets
the Unit, Circuit, or any of the Compressors on a circuit.
Alarm Ckt 1 This output is true whenever there is any active latching or non-latching shutdown diagnostic that targets
Circuit 1, or any of the Compressors on Circuit 1.
Alarm Ckt 2 This output is true whenever there is any active latching or non-latching shutdown diagnostic that targets
Circuit 2, or any of the Compressors on Circuit 2.
Unit Limit Mode This output is true whenever a circuit on the unit has been running in one of the limit modes continuously
for the Limit Relay debounce time. A given limit or overlapping of different limits must be in effect
continuously for the debounce time prior to the output becoming true. It will become false if no limits are
present for the debounce time.
Compressor Running The output is true whenever any compressor is running.
Circuit 1 Running The output is true whenever any compressor of Circuit 1 is running.
Circuit 2 Running The output is true whenever any compressor of Circuit 2 is running.
Ice Making This output is true when Ice Building status is active.
Maximum Capacity The output is true whenever the unit has reached maximum capacity continuously for the Max Capacity
Relay s time. The output is false when the unit is not at maximum capacity continuously for the lter time.
Evaporator Water
Freeze Avoidance
Request
This relay output is energized any time either the Low Evaporator Water Temperature – Unit Off or the
Low Evaporator Temperature Ckt x – Unit Off diagnostics are active. This relay is intended for use as an
external interlock for a eld engineered and provided solution to mitigate the freeze danger implied by
these diagnostics. Generally, this would be used in cases where operation of the evaporator water pump is
unacceptable due to the system constraints, (i.e. such as mixing unconditioned warm water with controlled
supply water as provided by other parallel chillers. The relay’s output can provide the method to close
bypass valves so the circulation becomes local to the evap and excludes the load, or can be used to defeat
the evap pump override entirely while initiating an independent source of heat / ow to the evap.
None: This selection is desirable to provide an easy way for a customer to defeat the effect of the relay, if it has
already been wired. For instance, if the relay was normally programmed as an “alarm” relay, and was
wired to a claxon, it may be desirable to temporarily defeat the feature without changing wiring.
Service request (for
Unit, Compressor(s)
or water pump):
This relay will be energized when at least one Maintenance alert condition (refer to Service required
message specication) occurs, as long as at least one of associated informational diagnostic(s) will be
active.
Hot Water Control: The output is true if capacity control is in Hot Water Control mode (water temperature being controlled
to the Active Hot Water Setpoint). The output is false in any other capacity control mode (Chilled Water
Control, Ice Making, etc...)
Warning
The output is true whenever there is any active warning diagnostic that is associated with the Unit, Circuit, or any of
the compressors on a circuit.
