2
Concord CXA/H - Installation and Servicing
GENERAL
CAUTION.
To avoid the possibility of injury during the installation, servicing or cleaning of
this appliance care should be taken when handling edges of sheet steel components.
Boiler CXA 40/H CXA 50/H CXA 60/H CXA 70/H CXA 80/H CXA 90/H CXA 100/H CXA110/H CXA120/H
Number of sections 3 4 4 5 5 6 6 7 7
Flow tappings Rc (in. BSP) 2 x 2 at rear
Return tappings Rc (in. BSP) 2 x 2 at rear
Maximum static head metres (feet) 61 (200)
Maximum pressure bar (p.s.i.) 6.0 (87)
Gas inlet connection Rc (in. BSP) 3/4 (3/4) 1 (1 )
Minimum dynamic mbar gauge 15.0 15.0 16.5 15.0 16.5 15.5 16.5 17.0 17.5
gas pressure required
at the boiler inlet (in.w.g.) (6.0) (6.0) (6.6) (6.0) (6.6) (6.2) (6.6) (6.8) (7.0)
Electricity supply 230 Volts- single phase, 50 Hz, fuse 5 A
Nominal flue size (to BS. 835) m m 150 150 175 175 200 200 200 250 250
(in.) (6) (6) (7) (7) (8) (8) (8) (10) (10)
Diverter outlet socket m m 184 184 213 213 238 238 238 288 288
internal diameter (in.) (7.3) (7.3) (8.4) (8.4) (9.4) (9.4) (9.4) (11.3) (11.3)
Length of burner bars (overall) m m 377 497 497 617 617 737 737 857 857
(in) (14.8) (19.5) (19.5) (24.3) (24.3) (29.0) (29.0) (33.7) (33.7)
Main burner injectors( 3 off) size, mm 3.4 3.82 4.12 4.57 4.86 5.2 5.3 5.5 56
Approximate dry weight kg 210 265 265 330 330 395 395 490 490
(lb.) (463) (584) (584) (727) (727) (871) (871) (1078) (1078)
Water content litre 22 30 30 37 37 45 45 53 53
(gal.) (4.8) (6.6) (6.6) (8.2) (8.2) (9.9) (9.9) (11.7) (11.7)
Table 2 - General Data
* This value is in the UK government's Standard Assessment Procedure (SAP) for energy rating of dwellings.
The test data from which it has been calculated has been certified by Advantica 0087.
Boiler CXA 40/H CXA 50/H CXA 60/H CXA 70/H CXA 80/H CXA 90/H CXA 100/H CXA 110/H CXA 120/H
Number of Sections 3 4 4 5 5 6 6 7 7
Boiler Input Gross kW 48.3 60.3 72.4 84.5 96.5 108.6 120.7 132.7 144.8
Btu/hr x 1000 164.7 205.8 247.0 288.2 329.3 370.5 411.7 452.8 494.0
Nett kW 43.5 54.3 65.2 76.1 87.0 97.8 108.7 119.6 130.4
Btu/hr x 1000 148.3 185.4 222.5 259.6 296.7 333.8 370.9 408.0 445.0
Boiler Output kW 40 50 60 70 80 90 100 110 120
Btu/hr x 1000 136.5 170.6 204.7 238.8 273.0 307.1 341.2 375.3 409.4
Gas rate m
3
/h 4.60 5.75 6.90 8.05 9.20 10.35 11.50 12.64 13.79
ft
3
/h 162.4 203.0 243.6 284.2 324.8 365.4 406.0 446.6 487.1
Approx. flue 4.5% CO2 &100°C.m
3
/s 0.04 0.05 0.06 0.07 0.08 0.09 0.10 0.11 0.12
gas volume 4.5% CO2 & 212°F. ft.
3
/m 85 106 127 148 170 191 212 233 254
Manifold setting pressure mbar 9.7 9.8 10.2 10.0 9.3 9.6 10.7 11.1 12.1
in.w.g. 3.9 3.9 4.1 4.0 3.7 3.8 4.3 4.4 4.8
Part load efficiency (Gross) % 83.5 83.6 83.4 82.4 82.6 83.8 81.9 83.7 85.1
Seasonal efficiency (SEDBUK)* [79.9]% [79.9]% [79.9]% [79.9]% [79.9]% [79.9]% [79.9]% [79.9]% [79.9]%
Table 1- Performance Data
Note. To obtain gas consumption in l/s, divide gross heat input in (kW) by a calorific value of 37.8 (MJ/m
3
).