Appendix
7
62
Installation and maintenance instructions for wall-mounted condensing gas boiler 600 - 11S/19S/24S/24C • 02/2006
Buderus • http://www.buderus-domestic.co.uk
Subject to modifications resulting from technical improvements!
7
Appendix
7.1
Technical specifications
Dimensions
Unit
600 Series wall-mounted condensing gas boiler
11S
19S
24S
24C
Type of gas supply as established in
EN 437 (GB)
GB II
2H3P
20 mbar, 37 mbar
(natural gas
H
and LPG)
Rated thermal load
for hot water tank
kW
kW
4.5 - 10.5
4.5 - 13.0
9.0 - 18.2
9.0 - 23.0
9.0 - 23.0
Rated heating capacity for system
temperature (modulating from 30° to 100°)
Heating curve 75/60
°
C
Heating curve 40/30
°
C
kW
kW
4.3 - 10.0
4.9 - 11.0
8.6 - 17.4
9.7 - 19.0
8.6 - 22.0
9.7 - 24.0
8.6 - 22.0
9.7 - 24.0
Seasonal efficiency (SEDBUK)
%
90.3
90.3
90.2
90.1
Central heating installation
Heating water temperature
°C
40 - 80
Δ
T at residual head of 200 mbar
K
<20
Max. operating overpressure of boiler
bar
3.0
Volume heat exchanger heating circuit
l
1.0
Pump stopping time heating circuit
Position 1
Position 2
min
h
4
24
Expansion vessel
Capacity of expansion vessel
l
12
Admission pressure of expansion vessel
bar
0.75
Hot water tank (type 24C)
Hot water capacity of heat exchanger
l
-
-
-
0.95
Outlet flow at 60 °C (
Δ
T = 50 °C)
l/min
-
-
-
6.5
(type 24C)
Adjustable hot water temperature
°C
40 - 60
Minimum connection pressure
bar
0.75
Maximum connection pressure
bar
10