page no. 6 of 44
NVx Range Users, Installation & Servicing Instructions issue 6.4 Aug 2017.
Model
15
20
25
30
40
50
60
75
SF90
SF120
SF140
Output
kW
15
20
25
30
40
50
60
75
90
120
140
Input (nett CV)
kW
16.4
21.9
27.3
32.9
43.5
54.2
65.5
80.6
97.4
128.5
148.9
Airflow
Volume
NVx F / C / V
m
3
/s
0.42
0.56
0.78
1.06
1.18
1.51
1.86
2.56
2.81
3.56
3.75
Duo
m
3
/s
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
2.34
3.12
3.64
NVx
D
Min
m
3
/s
0.42
0.56
0.78
1.06
1.18
1.51
1.83
2.56
2.81
3.56
3.75
Max
m
3
/s
0.46
0.62
0.86
1.16
1.30
1.67
2.02
2.81
3.09
3.91
4.13
Airflow
Throw
NVx F
m
10.0
14.0
20.0
24.0
28.0
30.0
30.0
32.0
34.0
36.0
38.0
NVx Duo
m
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
60.0
60.0
64.0
Fan
Static
NVx C
Pa
220
320
220
220
150
250
250
250
180
290
250
Electrics
Supply
Standard
V/ph/Hz
230/1/50
Optional*
V/ph/Hz
400/3/50 *on Centrifugal Unit Only.
3ph units shown in brackets ()
NVx F
Motor
kW
0.12
0.13
0.18
0.18
0.27
0.39
0.66
0.66
2 x
0.39
2 x
0.66
2 x
0.66
Run
amp
0.50
0.53
0.56
1.0
1.0
1.7
2.6
2.6
3.40
5.2
5.2
NVx C
Motor
kW
0.25
0.42
0.42
0.55
0.55
1.10
1.40
1.40
2 x
1.10
2 x
1.40
2 x
1.40
Start
amp
5.0
8.5
13.3
13.3
18.0
26.3
29
(16.5) (18.0)
31.0
40
(14.9)
44
(16.8)
Run
amp
2.0
3.1
4.2
4.3
5.8
7.6
10
(4.8)
(5.3)
12.8
17
(4.6)
20
(4.9)
Fuel
Connection
BSP/Rc
½”
¾”
Nominal Inlet
Pressure
Nat Gas
mbar
20.0
LPG
mbar
37.0
Consumption
Nat Gas
m
3
/h
1.69
2.31
2.89
3.45
4.60
5.73
6.93
8.59
10.29
13.73
15.74
LPG
m
3
/h
0.65
0.90
1.13
1.33
1.78
2.21
2.68
3.33
4.01
5.44
6.20
Mounting
Height
NVx F/Duo
Crossflow
Min
m
2.5
3.00
Max
m
3.0
5.00
NVx V
Downflow
Min
m
3.00
4.00
4.00
5.00
6.00
6.00
Max
m
5.00
6.00
7.00
8.00
10.00
12.00
Overall
Dims
NVx F
Height
mm
540
540
540
760
760
912
760
912
831
975
1140
Width
mm
1000
1000
1000
1000
1000
1000
1325
1325
1950
1950
1950
Depth
mm
892
925
925
925
905
925
941
941
925
941
941
Install
Clearance
NVx F
Top
mm
200
LH Side
mm
200
RH Side
mm
1000
Rear
mm
400
Flue
Diameter
mm Ø
80
80
80
100
100
100
130
130
130
130
130
Max
Length
Flue Only
m
12
Room Sealed
m
6
Combustion Air Spigot
mm Ø
80
80
80
100
100
100
130
130
130
130
130
Noise Levels
NVx F
dB(A)
54
52
53
54
58
61
62
62
66
67
67
NVx V
dB(A)
64
62
63
64
68
71
72
72
76
77
77
Nett Weight
NVx F
kg
71.5
71.5
72.5
75.5
115
133.5
135.5
157
202
238
286
NVx C
kg
106.5
120.5
126.5
166.5
168.5
183
213
234
329
363.5
430
Duties
Notes:
Fuel Consumption and input figures based upon nett calorific values as follows:
- Natural Gas (G20) nett CV 34.02 MJ/m
3
- Propane (G31) nett CV 88.00 MJ/m
3
•
Heaters have efficiency levels which meet with the minimum heater efficiency requirements of UK Part L Building Regulations
•
Air handling data is assessed at room ambient conditions
•
Throw figures provide the distance to the point where the terminal velocity degrades to 0.25m/s
•
Dimensions and clearance data in the table above refer to NVx F units only - for NVx C and NVx D data refer to the dimensions page and/or the installation instructions
•
Noise levels are applicable to standard NVx F models and are measured 5m from appliance in a typical installation situation.
•
Motor kW, run and start amps apply to standard electrical supply as stated. For optional data contact sales office
•
Optional 3 phase direct drive centrifugal blowers shown in
italics within brackets()
•
Connection of combustion air duct is not required for ‘flue only’ applications
•
The NVx Duo throw dimension is the effective combined throw measurement
•
It is the responsibility of the installing contractor to ensure that ductwork is correctly sized and balanced when installing NVx Centrifugal units
