4
Concord CXi -
Installation
Boiler
CXi 110
CXi 120
CXi 140
CXi 160
CXi 180
Boiler Input
Gross
kW
86.55
94.63
110.79
126.94
152.16
Low Rate
Btu/h x 1000
295.31
322.88
378.02
433.12
519.17
Nett
kW
77.98
85.26
99.82
114.37
137.10
Btu/h x 1000
266.07
290.91
340.59
390.24
467.77
Boiler Input
Gross
kW
137.38
150.21
175.85
201.49
227.14
High Rate
Btu/h x 1000
468.75
512.50
600.00
687.50
775.00
Nett
kW
123.78
135.33
158.44
181.55
204.65
Btu/h x 1000
422.34
461.76
540.60
619.44
698.28
Boiler Output
kW
109.91
120.16
140.68
161.20
181.71
High Rate
Btu/h x 1000
375.00
410.00
480.00
550.00
620.00
Gas rate
High
l/s
3.63
3.97
4.65
5.33
6.01
cu ft/h
462.10
505.20
591.50
677.70
764.00
Approx. flue
At 4.5% CO
2
& 100°C
cu m/sec
0.114
0.125
0.146
0.167
0.189
gas volume
At 4.5% CO
2
& 212°F
cu ft/min
242
264
309
354
399
Burner
High
mbar
10.8
11
11
10.8
11
setting
in.w.g.
4.3
4.3
4.3
4.3
4.3
pressure
Low
mbar
4.3
4.3
4.3
4.3
5
in.w.g.
1.7
1.7
1.7
1.7
2.0
Electricity supply
230 V ~ 50 Hz fuse 5A
Ignition
5 attempts followed by non-volatile lockout
Gas valve
High/Low and Off
Gas safety time
Maximum of 10 secs with 5 attempts with 1 minute between attempts.
Safety check
The control de-energises every 4 hours to check internal control functions.
Pump
Pump overrun operates if the flow temperature is greater than 75
o
C.
Boiler thermostat
The boiler thermostat hysteresis is a maximum of 3
o
C.
Table 1 - Performance Data
Table 3 - Boiler Control specification
Maximum flow temperature 85
o
C
Boiler
CXi 110
CXi 120
CX i 140
CXi 160
CXi 180
Number of sections
7
7
8
9
10
Flow tappings
Rc
2 x 2
Return tappings
Rc
2 x 2
Maximum static head
m. (ft)
45.7 (150)
Maximum pressure
bar (psi)
4.5 (65)
Gas inlet connection
Rc
1
1/2
Minimum dynamic
mbar
17.5
17.5
17.5
17.5
17.5
gas pressure
in.
7
7
7
7
7
Electricity supply
230 Volts - single phase, 50 Hz, fuse 5 A
Nominal flue size (to BS. 835)
mm
250
250
250
250
300
in.
10
10
10
10
12
Diverter outlet socket
mm
288
288
288
288
344
internal diameter
in.
11.3
11.3
11.3
11.3
13.5
Length of burner bars (overall)
mm
535
535
535
535
535
in
21.1
21.1
21.1
21.1
21.1
Approximate dry weight
kg
520
520
587
654
721
lb.
1146
1146
1294
1442
1590
Water content
litre
53
53
60
68
76
gal.
11.7
11.7
13
15
17
Table 2 - General Data
Note.
To obtain gas consumption in l/s divide gross heat input (kW) by a calorific value of 37.8 (MJ/m
3
)
GENERAL
Summary of Contents for Concord CXi 110
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