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
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