RT-SVX060A-GB
36
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
Hot Water Coil (HWC)
Figure 16 - Hot water coil location in the unit (Downflow
and horizontal supply air flow
HWC applies when additional heat is required. Hot
water comes from external boiler or other device. HWC
provides heating with a coil located after indoor coil
and offer full modulation heating control through the
use of a 3 ways valve. Control is based on mixed air
temperature and zone temperature.
Factory setting is given to heat pump operation. Hot
water is called in addition. Priority can be switched on
site.
Antifreeze opens the 3 ways valve when the coil
temperature is closed to the freezing point ( 2°C).
In antifreeze mode, unit operating, indoor fan is stopped
and the unit locked out in manual reset. Fresh air
damper is closed and the modulating valve opens. The
freeze protection works with manual reset.
Important notice: it is important that the pump
circulating hot water is permanently working to avoid
water to freeze in the coil. Otherwise, in order to
prevent water from freezing in the coil period, it is
recommended to use ethylene glycol. The service of a
used can cause scaling deposits, erosion or corrosion.
Insulation and proceed to heater wire installation on
all the water piping likely to be exposed to freezing
temperatures in order to avoid freeze up the coil and
heat losses. The water distribution network must be
fitted with vents in places where air is likely to be
trapped.
Figure 17 - Glycol percentage recommendation curve
1 = Critical risks of freezing
2 = Efficient freeze protection
3 = Ethylene glycol
4 = Propylene glycol
% = Glycol percentage (mass concentration)
°C = Glycol or water temperature
Water connection dimensions and characteristics
Figure 18 - Hot water coil view and connections
The hot water coil is factory mounted and placed in the
discharge section. Two holes are provided to connect
the hot water coil. The tubes for entering and leaving
water are equipped with a threaded female connection.
Figure 19 - Hot Water Coil Pressure Drop
0
50
100
150
200
250
300
350
400
450
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
50000
Ai
r P
re
ss
ure
D
ro
p
Airflow Rate (m3/h)
HOT WATER COIL AIR PRESSURE DROP
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