RT-SVX060D-GB
39
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
Hot Water Coil (HWC)
Figure 16 - Hot water coil location in the unit (Downow
and horizontal supply air ow
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 = Efcient 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
Air Pressure Drop
Airflow Rate (m3/h)
HOT WATER COIL AIR PRESSURE DROP
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