3
GENERAL
Classic
Slimline FF
-
Installation & Servicing
Boiler Size
FF 230
FF 240
FF 250
FF 260
Gas supply connection
(in. BSP)
Rc 1/2 (1/2) 1/2" (BSP Female)
Flow connection
22mm copper
Return connection
22mm copper
Maximum static water head
m (ft.)
30.5 (100)
Minimum static water head
m (ft.)
0.45 (1.5)
Electrical supply
230 V 50 Hz Boiler power consumption; 100W
Fuse rating
External; 3A Internal; F1A to BS.4265
Water content
litre (gal.)
2.7 (0.6)
3.65 (0.8)
Dry Weight
kg (lb)
40.9 (90.3)
46.6 (102.8)
Maximum installation weight kg (lb)
31.4 (69.3)
37.4 (82.5)
Boiler size
Height
mm (in.)
700 (27.5)
Width
mm (in.)
380 (15.0)
Depth
mm (in.)
280 (11.0)
Flue duct diameter
mm (in.)
100 (4.0)
Flue duct length (max)
m (ft)
1.0 (3.3)
Note.
Gas consumption is calculated using a calorific value of
38.7 MJ/m
3
(1038 Btu/ft
3
) gross or 34.9 MJ/m
3
(935 Btu/ft
3
) nett
To obtain the gas consumption at a different calorific value:-
a. FOR L/S
- divide the gross heat input (kW) by the gross C.V.
of the gas (MJ/m
3
)
b. FOR FT
3
/H
- divide the gross heat input (Btu/h) by the gross
C.V. of the gas (Btu/ft
3
)
Table 1 - General Data
Table 2 - Performance Data
*
The value is used in the UK Government's Standard Assessment Procedure (SAP) for energy rating of dwellings.
The test data from which it has been calculated have been certified by BG plc 0087.
Boiler Size
FF 230
FF 240
FF 250
FF 260
Boiler input
MINIMUM
kW
5.6
11.3
15.0
18.5
(Gross)
Btu/h x 1000
19.1
38.5
51.2
63.3
Gas consumption
l/s
0.15
0.29
0.38
0.49
ft
3
/h
19.4
37.1
48.7
62.9
MID
kW
8.3
13.0
16.7
20.3
Btu/h x 1000
28.5
44.3
56.85
69.2
Gas consumption
l/s
0.22
0.34
0.43
0.53
ft
3
/h
28.1
42.7
54.5
67.6
MAXIMUM
kW
11.0
14.7
18.3
22.0
Btu/h x 1000
37.5
50.0
62.5
75.0
Gas consumption
l/s
0.28
0.38
0.47
0.57
ft
3
/h
36.1
48.2
60.2
72.3
Boiler output
MINIMUM
kW
4.4
8.8
11.7
14.7
Btu/h x 1000
15
30
40
50
MID
kW
6.6
10.3
13.2
16.1
Btu/h x 1000
22.5
35
45
55
MAXIMUM
kW
8.8
11.7
14.7
17.6
Btu/h x 1000
30
40
50
60
Burner Setting
pressure (HOT)
MINIMUM
mbar (in.w.g.)
3.3 (1.3)
6.6 (2.6)
8.8(3.5)
10.0 (4.0)
MID
mbar (in.w.g.)
7.4 (2.9)
9.2 (3.7)
11.5 (4.6)
12.3 (4.9)
MAXIMUM
mbar (in.w.g.)
13.1 (5.2)
11.7 (4.7)
13.8 (5.5)
14.4 (5.8)
Seasonal Efficiency (SEDBUK) *
[ ] %
Band E 76.2
Band E 75.8
Band E 76.2
Band E 76.7
