BOILER SPECIFICATION 24cx 30cx 35cx
Lift weight 36kg (79Ib) 36kg (79Ib) 36kg (79lb)
Total weight (installed) 41kg (90Ib) 41kg (90Ib) 41kg (90lb)
Gas connection Ø O.D. 15mm. copper 15mm. copper 15mm. copper
Heating and return connection Ø O.D. 22mm. copper 22mm. copper 22mm. copper
Domestic hot water connection Ø O.D. 15mm. copper 15mm. copper 15mm. copper
Condensate connection Ø I.D. 21.5mm. plastic 21.5mm. plastic 21.5mm. plastic
Safety valve discharge connection ØO.D. 15mm. copper 15mm. copper 15mm. copper
Heating circuit safety valve (preset) 3 bar (43.5Ibf/in
2
) 3 bar (43.5Ibf/in
2
) 3 bar (43.5Ibf/in
2
)
Heating system minimum pressure 0.7bar (10.1Ibf/in
2
) 0.7bar (10.1Ibf/in
2
) 0.7bar (10.1Ibf/in
2
)
Maximum domestic hot water circuit 10bar (145Ibf/in
2
) 10bar (145Ibf/in
2
) 10bar (145Ibf/in
2
)
1.0bar (14.5lbf/in
2
) 1.0bar (14.5lbf/in
2
) 1.0bar (14.5lbf/in
2
)
0.2bar (2.9Ibf/in
2
) 0.2bar (2.9Ibf/in
2
) 0.2bar (2.9Ibf/in
2
)
Specific water rate at 35° rise 9.85L/min. 12.3L/min. 14.4L/min
Min. flow rate around C.H. at 20° rise 776L/hr. 1032L/hr. 1204L/hr
Maximum domestic hot water temperature 63° 63° 63°
Expansion vessel capacity 8 litres (1.76 gallons) 8 litres (1.76 gallons) 8 litres (1.76 gallons)
Expansion vessel charge pressure 0.5bar (7.3Ibf/in
2
) 0.5bar (7.3Ibf/in
2
) 0.5bar (7.3Ibf/in
2
)
Electrical supply 230V~50Hz fused 3A 230V~50Hz fused 3A 230V~50Hz fused 3A
Electrical rating 180W fused 3A 180W fused 3A 180W fused 3A
EN437 IP clasification IPX4D IPX4D IPX4D
Internal fuse rating on main PCB 2A 2A 2A
Gas supply (governed meter only) and Cat G20 natural gas G20 natural gas G20 natural gas
Gas Category I
2H
I
2H
I
2H
Inlet gas working pressure 20mbar 20mbar 20mbar
Burner % CO
2
case on 9.3 nominal 9.3 nominal 9.3 nominal
Burner % CO
2
case off 9.3 nominal 9.3 nominal 9.3 nominal
1.93 m
3
/h 2.59 m
3
/h 3.26 m
3
/h
68.1 ft
3
/h 91.5 ft
3
/h 115 ft
3
/h
0.99 m
3
/h 0.99 m
3
/h 0.99 m
3
/h
35.1 ft
3
/h 35.1 ft
3
/h 35.1 ft
3
/h
Flue type C
13, C33, C43 C13, C33, C43 C13, C33, C43
NOx Class 5 Class 5 Class 5
Heat output condensing mode 18.8kW 24.9kW 31.0kW
Heat input Nett Q = kW DHW max. 25.5 min. 9.4 DHW max. 30.8 min. 9.4 DHW max. 35.8 min. 9.4
CH max. 18.3 min. 9.4 CH max. 24.5 min. 9.4 CH max. 30.8 min. 9.4
Heat output P = kW DHW max. 25.1 min. 9.3 DHW max. 30.0 min. 9.3 DHW max. 35.0 min. 9.3
CH max. 18.0 min. 9.3 CH max. 24.0 min. 9.3 CH max. 30.0 min. 9.3
SEDBUK rating % 2005 90.3 90.0 90.2
SEDBUK rating % 2009 88.4 88.3
89.1
Approximate max. gas rate
after 10 mins. from cold
Approximate min. gas rate
after 10 mins. from cold
Minimum working pressure to obtain
domestic hot water
Minimum working pressure to obtain
maximum domestic flow
PLEASE REFER TO THE COMMISSIONING SECTION
Approximate gas rate
at part load.
(28 Seiten)
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