C110
Compact one-unit solution delivering exceptional performance.
The Keston C110 is wall-mounted and fully modulating, providing output from 28kW to 110kW. As is the case with all Keston boilers, it has an extremely high efficiency performance of up to 98 percent(GCV).
The C110 has been developed based on the needs of both the installer and the end-user, making it quick and easy to install, easy to use and extremely reliable.
Featuring dual-flow technology, the C110 can deliver two different flow temperatures at the same time, whilst maintaining lowtemperature heating output for under-floor or weather-compensated heating. This technology allows the boiler to provide two flow and return tapping pairs, for separate connection to heating and hot water circuits.
- High efficiency
- Easy to install – wall mounted and ultra compact for the output
- Simple and easy to use
- Fast response
- Automatic pump exercise
- Weather compensation included – just add optional sensor
- Two-stage frost protection for added peace of mind
- Flexible siting
- Automatic speed controlled pumps for increased efficiency
- Two year parts and labour warranty
Performance Data |
Unit |
NG |
| Max. CH input (Gross CV) | kW | 113.0 |
| Max. DHW input (Gross CV) |
kW |
N/A |
|
Max. DHW output to water |
kW |
N/A |
|
Max. DHW output to water (80/60ºC flow/return) |
kW |
99.4 |
|
Max. output to water (50/30ºC flow/return) |
kW |
110.4 |
|
Min. output to water (80/60 flow/return) |
kW |
25.0 |
|
Max. domestic water flow rate (at 35ºC rise) |
l/min |
N/A |
|
Specific DHW rate (EN625 30ºC rise) |
l/min |
N/A |
|
Max. domestic hot water flow temp |
ºC |
N/A |
|
Max. Gas Cons. After 10 mins |
l/s |
2.992 |
|
Ft3/hr |
380 |
|
|
m3/hr |
10.76 |
|
|
Max. operating flow temp |
ºC |
82 |
Installation Data |
Unit |
NG |
|
Max. press (sealed system) |
bar |
2.7 |
|
Inlet Gas Pressure |
mbar/(in w.g) |
20.0 |
|
Electrical supply |
230V 50Hz |
|
|
Power consumption (max) |
W |
520 |
|
Power consumption (standby) |
W |
16 |
|
Optimum flue gas CO2 level (at max CH rate, case on) |
% |
8.8 |
|
Safety valve |
bar/(ibf/sq in) |
N/A |
|
Expansion vessel capacity |
litre |
N/A |
|
Expansion vessel charge pressure |
bar/(ibf/sq in) |
N/A |
|
DHW Max. Working Pressure |
bar/(ibf/sq in) |
N/A |
|
CE PI Number |
87BN14 |
|
Physical Data |
C110 |
|
|
Weight – full |
kg |
147 |
|
Weight – empty |
kg |
127 |
|
Flow and return connection |
Rp 1”F |
|
|
DHW and CWS connection |
N/A |
|
|
Gas connection |
Rp 1.5”F |
|
|
Condensate connection |
22mm plastic |
|
|
Flue/Air Intake Pipe Size (Nominal Bore) |
100mm |
|
|
IP rating |
IP20 (IPX0) |
|
Flue and air intake material: 50mm MuPVC |
||
|
Max. Flue outlet length |
m |
N/A |
|
Max. Total flue outlet and air intake |
m |
N/A |
Flue and air intake material: 100mm Keston composite flue |
||
|
Max. Flue outlet length |
m |
30 |
|
Max. Total flue outlet and air intake length |
m |
60 |



