Range Guide

ManualsBrandsKeston ManualsBoilersKeston K260

Modular Wall

Mounted

Ultra-High

Efficiency Gas

Condensing

Boilers

for Low Cost

Commercial

and Industrial

Heating

● Small diameter plastic flue systems

can be extended up to 39 metres

vertically or horizontally

● Low cost plastic flue material saving

thousands of pounds on installation

costs

● Boilers from 38 kW to 100 kW output

● Modular systems available to match

any heating output

● Compact size and preassembled

design reduces space requirements

and installation time.

CONDENSING BOILERS

Summary of content (8 pages)

PAGE 1
Modular Wall Mounted Ultra-High Efficiency Gas Condensing Boilers for Low Cost Commercial and Industrial Heating CONDENSING BOILERS ● Small diameter plastic flue systems can be extended up to 39 metres vertically or horizontally ● Low cost plastic flue material saving thousands of pounds on installation costs ● Boilers from 38 kW to 100 kW output ● Modular systems available to match any heating output ● Compact size and preassembled design reduces space requirements and installation time.
PAGE 2
Keston BOILERS The commercial range of Keston wall mounted gas condensing boilers covers outputs from 38 kW (Keston 130) to 100 kW (Keston 340) with single boiler units. As with all Keston Boilers each has an extremely high efficiency performance of 98% (GCV). Despite their powerful outputs each unit is designed for wall mounting though floor standing installations can be accommodated for the Keston 260 and Keston 340 using an optional floor standing frame.
PAGE 3
Keston Commercial - Higher Output Keston 260 and Keston 340 Following the immediate success of the Keston 130 (38 kW) and the Keston 170 (50 kW) light commercial models Keston Boilers launched two additional commercial condensing gas boilers to Sheltered Housing Project: 3 Keston 170’s further extend its range of ultra high efficiency boilers The Keston 260 (76 kW output) and Keston 340 (100 kW output) are unique in concept and design and each have an exceptionally high efficiency at 98% (GCV).
PAGE 4
Practically ANY HEATING OUTPUT Because of its modular design the Keston lends itself to almost any required heating output by way of multiple unit installations for larger commercial or industrial applications and the benefits over a single commercial boiler are immense. The Keston modular system is perfect for decentralisation programmes now happening in many commercial installations such as hospitals and universities where one large commercial boiler is being replaced.
PAGE 5
Electrical CONNECTION School Project: 3 Keston 170’s on a rig Electrical supply and control of the Keston condensing boiler is dependent on model as follows: ● Keston 130 and 170 10A permanent live, 2A switched live on/off control. Shunt pump overrun control. ● Keston 260 and 340 13A permanent live, volt free link on/off control. Gas SUPPLY The Keston Condensing Boiler uses premix combustion technology which requires adequate gas supply pressure and flow at all times during operation.
PAGE 6
Slope The two terminals are subject to the requirements of BS 5440 Pt 1 for clearances from features of the building 'Horizontal' flue outlet pipework MUST slope at least 2.5 although some can be decreased to the values indicated. degrees (45 mm per metre run) downwards towards the boiler. Pipework can be vertical. Only swept elbows can be If either the air inlet or the flue outlet terminate at a height used.
PAGE 7
Multiple BOILER INSTALLATIONS Hospital Project: 6 Keston 170’s The modular design of the Keston Commercial range lends Safety Valve itself ideally to multiple boiler installations. As a result almost AV IV any heating output requirement can be accommodated using IV multiple Keston units.
PAGE 8
Performance Data Keston 130 Keston 170 Keston 260 Keston 340 Max Input (GCV) kW/(Btu/h) 42.3/(144,330) 55.0/(187,660) 84.6/(288,650) 110.0/(375,300) Max Output to water (80/60 Flow/Return) kW(Btu/h) 38.1/(130,000) 49.8/(170,000) 76.1/(259,650) 99.0/(337,800) Max Output to water (60/40 Flow/Return) kW(Btu/h) 40.0/(136,500) 52.4/(178,800) 79.5/(271,250) 104.0/(354,800) Max Output to water (50/30 Flow/Return) kW/(Btu/h) 41.4/(141,500) 54.5/(186,000) 82.9/(282,850) 107.8/(367,800) 7.