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Installation
CAUTION! After completion of wiring, check all electrical
connections, and ensure all connections are tight.
Replace and secure all electrical box covers and access
doors before leaving unit or connecting power to circuit
supplying unit.
FWD
Power supply
Scroll compressors
Capacities
Proper phasing of the electrical power wiring is
Cooling capacity on water (1)
Heating capacity on water (2)
critical for proper operation and reliability of the scroll
Fan motor
compressor and fans.
Fan power input (3)
Current amps (3)
Proper rotation of the scroll compressor must
Start-up amps
be established before the unit is started. This is
Air flow
accomplished by confirming that the electrical phase
minimum
nominal
sequence of the power supply is correct. The motor is
maximum
internally connected for clockwise rotation with the inlet
Main coil
power supply phased A, B, C.
Water entering/leaving connections
The direction of rotation may be reversed by
Electric heater (accessory for blower only)
interchanging any two of the line wires. It is this
Electric power supply
possible interchange of wiring that makes a phase
Heating capacity
Hot water coil (accessory for blower only)
sequence indicator necessary if the operator is to
Heating capacity (4)
quickly determine the phase rotation of the compressor
G2 filter (filter box accessory)
motor.
Quantity
Dimensions ( LxWxth)
The "ABC" indicator on the face of the phase indicator
G4 filter (filter box accessory)
will glow if phase is ABC for terminals L1, L2, and L3.
Quantity
Dimensions ( LxWxth)
Condensate pump (accessory)
Blink Code for motor protector with
Water flow - lift height
Not available for FWD30 and FWD45
status LED
Sound level (L/M/H speed)
Sound pressure level (5)
The blink code facilitate trouble-shooting on site. It
Sound power level (5)
provides Information on the actual status of the motor
Unit dimensions
protector.
Width x Depth
Height
Functional Description:
Shipped unit dimensions
Width x Depth
A red/green twin LED mounted on the printed circuit
Height
board generates the blink code, which is then made
Weight
Colour
visible on the front housing of the module via an optic
Recommended fuse size
guide. A solid green LED denotes a fault-free condition;
Unit alone (aM/gI)
a blinking red LED indicates an identifiable fault
Unit with electric heater (gI)
condition.
(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow
Blink Code:
(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.
The blink code consists of different on / off times of the
(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.
red Led.
Heat exchanger operating limits:
The cycle is repeated continuously
FWD:
*water temperature: max 100° C
Fault
LED on
*absolute service pressure: min 1 bar/max 11 bars
approx.
Accessories - Hot water coil:
PTC overheat
40 ms
*water temperature: min. +2° C/max. 100° C
*absolute service pressure: min 1 bar/max 11 bars
PTC reset
approx.
delay active
80 ms
approx.
phase loss
500 ms
wrong phase
approx.
sequence
120 ms
4
26
Technical Data
(V/Ph/Hz)
(kW)
(kW)
(type)
(kW)
(A)
(A)
(m
/h)
3
(m
/h)
3
(m
/h)
3
(type)
(Dia)
(V/Ph/Hz)
(kW)
(kW)
(mm)
386x221x8
(mm)
(type)
(l/h - mm)
(dB(A))
(dB(A))
(mm)
(mm)
(mm)
(mm)
(kg)
(A)
(A)
16 (2kW),25 (4kW)
LED off
LED on
LED off
approx.
approx.
approx.
460 ms
40 ms
460 ms
approx.
approx.
approx.
920 ms
80 ms
920 ms
approx.
approx.
approx.
500 ms
500 ms
500 ms
approx.
approx.
approx.
120 ms
120 ms
400 ms
08
12
5,2
8,3
6,3
11,9
0,23
0,46
1,1
2,2
3,2
5,5
490
980
820
1650
980
1970
3/4"
3/4"
230/1/50
230/1/50 or 400/3/50
2/4
8
6,3
12
2
2
486x271x8
-
2
-
486x264x48
36/40/43
38/41/44
46/50/53
48/51/54
890 x 600
1090 x 710
250
300
933 x 644
1133 x 754
260
310
32
46
8/16
8/16
40 (230V),3*16 (400V)
20
30
230/1/50
15
18,8
18,9
20,9
2 x direct drive centrifugal
0,65
1,04
3,1
4,7
9,3
14,1
1400
1800
2300
3000
2600
3600
ISO R7 rotating female
1 1/2"
1 1/2"
400/3/50
400/3/50
10
12
17,4
22,4
2
2
586x321x8
586*421*8
2
2
586x314x48
586*414*48
Centrifugal
24 - 500
46/50/53
47/52/57
56/60/63
57/62/67
1290 x 820
1290 x 970
350
450
1333 x 864
1333 x 1008
360
460
61
76
galvanised steel
8/16
8/25
3*20
3*25
45
30,1
38,2
1,51
5,5
16,5
2700
4500
5400
1 1/2"
400/3/50
12
34,5
2
586*621*8
2
586*614*48
47/52/58
57/62/68
1290 x 1090
650
1333*1133
660
118
8/25
3*25
RT-SVX060D-GB
UNT-PRC002-GB
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