General
1
We reserve the right to make technical modifications
Buderus Ltd. • http://www.buderus-domestic.co.uk
Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006
7
Flue-gas readings
Condensate water quantity, natural gas, 40/30 °C
l/h
1.6
Exhaust-fume mass-flow rate
Full load
Part-load
g/s
g/s
10.6
4.3
Exhaust-fume temperature, full load
Heating curve 75/60 °C
Heating curve 40/30 °C
°C
°C
77
55
Exhaust-fume temperature, partial load
Heating curve 75/60 °C
Heating curve 40/30 °C
°C
°C
60
35
CO2 full load, natural gas standard test gas G20
%
9,2
CO2 full load, natural gas standard test gas G31 propane
%
10.3
Standard emission factor NOx
ppm (mg/kWh)
<30
Standard emission factor CO
ppm (mg/kWh)
<22
Flow pressure available for use
Pa
75
Electrical specifications
Mains connection voltage
Vac
230 (50 Hz)
Electrical protection rating
IP X4D
Electrical power consumption, standby
W
4
Electrical power consumption, partial load
W
88
Electrical power consumption, full load
W
110
Dimensions and weight of boiler
height × width × depth
mm
780 × 460 × 330
780 × 460 × 330
780 × 460 × 330
Weight without casing
Weight with casing
kg
kg
30
33
31
34
31
34
Gas
Category of gas as per EN 437 for GB
II
2H3P
20 mbar, 37 mbar (natural gas
H
and propane
P
)
Gas injector Ø natural gas
H
(G20)
mm
4.45
4.45
4.45
Gas injector Ø propane
P
(G31)
mm
3.45
3.45
3.45
Venturi article number
423.072A
423.072A
423.072A
Natural gas
H
Delivered ready for operation, adjusted to Wobbe index
14.1 kWh/m
3
(with reference to 15 °C, 1013 mbar),
applicable to Wobbe index range
11.3 to 15.2 kWh/m
3
.
Markings on gas classification plate:
Configured category: G 20 - 2E - 20 mbar
Propane
P
Deemed suitable for use with propane after inspection
by a registered Corgi heating engineer.
Markings on gas classification plate:
Configured category: 3P G 31_30-50 mbar.
Other items
Pump
UP 15-50
Pump over-run time:
Heating system default adjustments
External cylinder
Plate heat exchanger (ECO)
Plate heat exchanger (warm start)
After service mode
5 minutes
30 - 40 seconds
–
–
1 minute
5 minutes
–
30 - 40 seconds
30 seconds
1 minute
5 minutes
–
30 - 40 seconds
30 seconds
1 minute
box 5
Technical specifications
Buderus
Unit
500-24/S
500-24/C
500-28/C
