3
Classic LX, RS - Installation
Boiler Size RS 230 RS 240 RS 250 RS 260
Boiler input MINIMUM kW 5.8 11.1 14.9 18.8
(Btu/h) (19 100) (37 900) (50 800) (64 100)
To obtain gas
consumption Gas consumption l/s (ft
3
/h) 0.15 (19.0) 0.29 (37.0) 0.39 (49.3) 0.48 (61.7)
(a) For l/s: divide
heat input (kW) MID kW 8.3 12.9 16.7 20.4
by C.V. of the
gas (Btu/ft
3
) (Btu/h) (28 500) (44 000) (56 850) (69 600)
(b) For ft
3
/h; divide Gas consumption l/s (ft.
3
/h) 0.22 (27.9) 0.34 (42.7) 0.43 (54.8) 0.53 (67.0)
heat input (Btu/h)
by C.V. of the gas MAXIMUM kW 11.0 14.6 18.3 22.0
(Btu/ft
3
). Heat
inputs are pre-set (Btu/h) (37 500) (50 000) (62 500) (75 000)
to the highest
nominal rating. Gas consumption l/s (ft
3
/h) 0.28 (36.1) 0.38 (48.2) 0.47 (60.2) 0.57 (72.3)
Boiler output MINIMUM kW 4.4 8.8 11.7 14.7
(Btu/h) (15 000) (30 000) (40 000) (50 000)
MID kW 6.6 10.3 13.2 16.1
(Btu/h) (22 500) (35 000) (45 000) (55 000)
MAXIMUM kW 8.8 11.7 14.7 17.6
(Btu/h) (30 000) (40 000) (50 000) (60 000)
Burner Setting MINIMUM mbar (in.w.g.) 4.0 (1.6) 8.7 (3.5) 9.7 (3.9) 12.0 (4.8)
pressure (HOT)
MID mbar (in.w.g.) 8.5 (3.4) 12.0 (4.8) 12.1 (4.9) 14.0 (5.6)
MAXIMUM mbar (in.w.g.) 14.5 (5.8) 15.0 (6.0) 15.0 (6.0) 16.5 (6.6)
Seasonal Efficiency (SEDBUK)* % 70.8 73.2 72.3 72.3
Boiler Size RS 230 RS 240 RS 250 RS 260
Gas supply connection 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
Fuse rating External: 3A
Water content litre (gal.) 2.7 (0.6) 3.65 (0.8) 4.6 (1.0)
Dry Weight Deluxe model kg (lb.) 43.1(95.0) 49.3 (108.7) 57.2 (126.1))
Standard model kg (lb.) 40.1(88.5) 46.3 (102.1) 54.2 (119.5
Maximum installation weight kg (lb.) 28.6 (63.1) 34.7 (76.5) 42.7 (94.2)
Boiler size Height mm (in.) 600 (23.6)
Width mm (in.) 380 (15.0)
Depth mm (in.) Deluxe model 315 (12
3/8")
Standard model 300 (11
3/4")
GENERAL
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 BGplc 0087.