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Graph 1 - Heat load / water volume
2
CLEARANCES & DIMENSIONS
Table 3
Boiler Size
No. of sections
Front clearance mm (in)
Rear clearance mm (in)
Side clearance mm (in)
Dimension A
m m
in
Dimension B
m m
in
Dimension C
m m
in
Dimension D
m m
in
Dimension E
m m
in
POSITION OF BOILER
Minimum clearances required
from walls or other fixed objects
to allow for the free access of
combustion air are shown in
Table 3 above.
However, for maintenance
purposes we suggest a
minimum rear clearance of
50mm.
Any combustible material
adjacent to the boiler and its
flue system must be so placed
or shielded as to ensure that
its temperature does not
o
o
exceed 65
C (150
F).
MULTIPLE BOILER INSTALLATIONS
The minimum installation clearances must conform to the
dimensions given below:
CXA 40, 50, 60, 70 & 80
Clearance between boilers = 50mm
Clearance at both ends of the multiple installation = 50mm*
6
CXA 40
CXA 50
CXA 60
3
4
0
0
50 (2)
50 (2)
750
882
29
34
1/2
3/4
108
108
4
4
1/4
1/4
931.6
931.6
36
36
5/8
5/8
177.5
187.5
7
7
3/8
69.0
79.0
2
3
3/4
1/8
GENERAL
Graph 2 - Hydraulic Resistance
CXA 70
CXA 80
4
5
5
750 (29
)
1/2
0
150 (6)
150 (6)
50 (2)
50 (2)
50 (2)
882
1042
1042
34
41
41
3/4
122.5
122.5
135
4
4
5
7/8
7/8
3/8
931.6
910.6
910.6
36
35
35
5/8
7/8
7/8
187.5
224.5
224.5
7
8
8
3/8
7/8
7/8
79.0
116.0
116.0
3
4
4
1/8
5/8
5/8
CXA 90, 100, 110 & 120
Clearance between boilers = 100mm
Clearance at both ends of the multiple installation = 100mm*
Rear clearance: sufficient clearance should be given at the
rear of the boiler for connection of gas and water pipework.
*Additional clearance is required for access at either end of the
installation.
CXA 90
CXA100 CXA110 CXA120
6
6
300 (12) 300 (12) 300 (12) 300 (12)
100 (4)
100 (4)
1212
1212
47
47
3/4
3/4
190
190
7
7
1/2
1/2
872.6
872.6
34
34
3/8
3/8
271.5
271.5
10
10
5/8
5/8
163.0
163.0
6
6
1/2
1/2
Concord CXA
- Installation and Servicing
6
7
100 (4)
100 (4)
1232
1390
48
54
1/2
3/4
157
160
6
6
1/8
1/4
872.6
872.6
34
34
3/8
3/8
275.0
321.5
10
12
1/2
5/8
167.0
213.0
6
8
1/2
3/8
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