The section
below details the performance data for the Keston C90
and Keston C110 condensing boilers:
Technical
Specification
C90
C110
Max.
Input (GCV)
k/W/(Btu/h)
91.2
/ (311,200)
113.0
/ (385,600)
Max.
Output (80/60C Flow/Return)
k/W/(Btu/h)
79.9
/ (272,500)
99.4
/ (339,400)
Max.
Output (80/60C Secondary Flow/Return*)
k/W/(Btu/h)
40.3
/ (137,600)
49.7
/ (169,500)
Max.
Output (50/30C Flow/Return)
k/W/(Btu/h)
89.8
/ (306,800)
110.4
/ (377,000)
Max.
Output (50/30C Secondary Flow/Return*)
k/W/(Btu/h)
44.9
/ (153,400)
55.2
/ (188,500)
Min.
Output (80/60C Flow/Return)
k/W/(Btu/h)
22.8
/ (77,000)
25.0
/ (83,500)
Min.
Output (80/60C Secondary Flow/Return*)
k/W/(Btu/h)
11.3
/ (38,500)
12.5
/ (42,900)
Max
Gas Consumption After 10 Mins.
l/s
/ (ft³/hr)
2.414
/ (307)
2.992
/ (380)
Max.
Operating Flow Temp.
°C
82.0
82.0
Max.
Head (Open Systems)
m/(ft)
30.5
30.5
Max.
Press. (Sealed Systems)
Bar
2.70
2.70
Min.
Head (Open Systems)
m
3.0
3.0
Required
Inlet Gas Pressure (Dynamic)
mbar/(in
w.g)
20.0
/ (8.0)
20.0
/ (8.0)
Flow/Return
Temperature Differential
°C
10
to 20
10
to 20
Electrical
Supply
230V
50Hz
230V
50Hz
Power
Consumption (Standby)
W
8
16
Power
Consumption (Max)
W
260
520
IP
Rating
IP20
IP20
Cabinet
Height
mm
825
825
Cabinet
Width
mm
1000
1000
Cabinet
Depth
mm
337
337
Side
Clearance
mm
25
25
Base
Clearance
mm
150
150
Front
Clearence
mm
300
300
Top
Clearance
mm
150
150
Weight
- Full
kg
143
143
Weight
- Empty
kg
125
125
Flow
and Return Connections
Rp
1.5" F
Rp
1.5" F
Secondary
Flow/Return Connections
Rp
1" F
Rp
1" F
Gas
Connection
Rp
1" F
Rp
1" F
Condensate
Connection
22mm
plastic overflow
Flue/Air
Intake Pipe Size(nominal bore)
mm/(in)
100(4)
100(4)
Flue
and Air Intake Material
Keston
Composite Pipe Only
Max.
Air Intake length
m
30
30
Max.
Flue Outlet Length
m
30
30
Type
of Gas
G20
Natural Gas ONLY
G20
Natural Gas ONLY
Optimum
Flue Gas CO2 Level
%
8.3
8.8
NB: *These are not in addition to main
flow outputs.
KESTON Boilers Limited, 34 West Common Road, Hayes, Bromley, Kent BR2 7BX, United Kingdom, Telephone: 020 8462 0262 Fax: 020 8462 4459 General Information: info@keston.co.uk Designed and built by PRG.
