Dimensions and technical data
550
820
690
544
65
280
L
HO
HI
EDS801/3 page3
Dimensions
Boiler model
CKRS 05
CKRS 06
CKRS 07
CKRS 08
CKRS 09
Output
kW
75
93
110
127
145
No. sections
5
6
7
8
9
Overall length
L
mm
800
922
1044
1166
1288
Combustion chamber length
mm
550
670
790
910
1030
Combustion chamber diameter
mm
Boiler door thickness
mm
Boiler flow connection
HO
Boiler return connection
HI
Flue spigot diameter
mm
Technical data
Nominal heat output (full load) ncv
kW
75.6
93
110.5
127.9
145.3
Nominal heat input (full load) ncv
kW
81.6
100.5
119.3
138.1
157
Efficiency at 100% load (ncv)
%
92.6
92.5
92.6
92.6
92.5
Efficiency at 30% load (ncv)
%
95.3
95.4
95.4
95.5
95.6
Boiler seasonal efficiency(1)
%
85.4
85.4
85.4
85.5
85.6
Natural gas consumption (gcv)
m³/h
8.4
10.4
12.4
14.3
16.3
Oil consumption class D (ncv)
kg/h
6.9
8.5
10.1
11.6
13.2
Dry w eight (excludes burner)
kg
289
334
381
429
474
Water volume
litres
55
65
75
85
95
Flue gas mass flow @3% oxygen
m³/h
8.4
10.4
12.3
14.2
16.2
Chimney draught
Pa
Gas side resistance
mbar
1.65
1.82
2.05
2.3
2.55
Flue gas temperature rise @3% oxygen
Nat gas (2)
°C
166
162
159
157
154
Class D oil
°C
188
181
178
176
173
Maximum w orking temperature
°C
Maximum hydraulic w orking pressure
bar
CE-Registration number
Water flow rates and hydraulic resistances
Water flow rate at 11°C temp. rise
l/s
1.64
2
2.39
2.77
3.15
Hydraulic resistance at 11°C temp. rise
kPa
2.52
3.1
4.45
5.5
7.27
Water flow rate at 20°C temp. rise
l/s
0.9
1.11
1.32
1.52
1.73
Hydraulic resistance at 20°C temp. rise
kPa
0.76
1
1.56
1.9
2.23
Water flow rate at 30°C temp. rise
l/s
0.6
0.74
0.88
1.02
1.15
Hydraulic resistance at 30°C temp. rise
kPa
0.38
0.54
0.74
0.9
1.13
Notes: (1) Calculated from the non-domestic heating and cooling compliance guide for conformance w ith
ADL2A and ADL2B 2013 using the formula n
seasonal
=
0.81n
30%
+ 0.19n
100%
(2) BS 7190:1989
336
102
R2
R2
150
180
6
CE 1015BR0260
5
90