Keston K130 rig diagram
Contents
1. Modular Wall TIYAN Mounted KESTON CONDENSING BOILERS 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 Kes LO71 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 GCYV Despite their powertul 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 Keston Boilers offer complete and cost effective solutions to commercial and industrial heating and in all installations can offer the highest quality systems These are very often at much lower costs than a single commercial boiler of equivalent output POINTS Practically any heating output possible with modular system Simple and quick to install and maintain all access from front and top Wall mounted with optional floor s2. From terminal facing a terminal 200 1200 J From opening in a car port 200 100 K Vertically from terminal on same wall 500 1500 L Horizontally from terminal on same wall 300 300 6 The two terminals are subject to the requirements of BS 5440 Pt for clearances from features of the building although some can be decreased to the values indicated If erther the air inlet or the flue outlet terminate at a height of less than 2m 6ft above ground level the termination must be protected by a suitable guard Suitable terminal guards can be obtained from Tower Flue Components Ltd or its distributors The Keston Condensing Boiler as with any condensing boiler will generate a condensate plume from the flue terminal in all weather conditions Consideration must therefore be given to the effect of this plume when selecting a location for the flue terminal It is advisable for horizontal flue terminals to place a 45 elbow at the end of the flue to direct the condensate plume up and away from the property Flue outlet and air inlet terminations must be at least 60 mm and 95 mm respectively from the wall face There is no maximum distance between flue terminal and air inlet terminal the terminations can be on opposite sides of the dwelling if desired A minimum clearance of at least 500 mm must be left between the terminations Compartment Installation The casing temperatures of the Keston commercial boile
3. 4 BSPT Male 50 2 50 2 5 30 muPVC BS5255 Pipe Only Yes 8 4 Web www keston co uk Yes 8 4 Ne 3 0 230V 50Hz 1200 1260 1080 350 27 Oy 305 165 363 50 330 Rp 2 F Rp 1 25 F 00 4 1004 20 40 2 70 3 0 230V 50Hz 1200 1260 1080 350 127 127 305 165 363 50 330 Rp 2 F Rp 1 25 F 00 4 1004 20 40 Keston Composite Pipe Only No 8 4 No 8 4 In accordance with our policy of constant improvement we reserve the right to alter the design and specification without prior notice All illustrations included in this brochure are for general guidance only As such these illustrations are not intended as final design drawings
4. commercial condensing gas boilers to 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 Despite their powerful output the boilers are designed to be wall mounted though floor standing installations can be accommodated using the optional floor standing frame The compact size means these boilers can be sited practically anywhere without the need for a dedicated boiler room Each model comprises two boiler modules with individual gas valve fans burners and heat exchanger assemblies Each module operates completely independently and is automatically sequenced to offer maximum load matching Firing sequence is regularly rotated automatically to even usage levels FLUE SYSTEM All Keston boilers have the advantage of a small diameter plastic flue system and the commercial range is no exception The 50 mm diameter plastic flue used on the Keston 30 and Keston 70 can be extended up to 29 metres away from the unit The 100 mm diameter plastic flue on the Keston 260 and Keston 340 can be extended up to 39 metres All boilers can accommodate vertical or horizontal flue routes The usage of low cost plastic pipe for the flue can save thousands of pounds on installation costs when compared to a conventional flue In refurbishment projects there Is no need for expensive relini
5. will form within the flue system Drain points with To Boiler suitable traps must therefore be incorporated within the flue nee system at the base of vertical flue sections TN in excess of 4m 2m for the Keston eO g 6 in T min and Keston 70 These additional condensate drains must be run to discharge as detailed in section Condensate Drainage Such drain points can be formed using standard Keston Composite flue fittings Terminations Air inlet terminals must be positioned to ensure only fresh air is drawn into the boiler The air terminal must be located outside of the building Drawing of combustion air directly from a ventilated boiler room will invalidate the heat exchanger warranty The flue outlet terminal is designed to face outwards but can if desired be adapted to face in any direction BUT must not be directed in the region of the air inlet Where the air and flue terminals are located in close proximity the flue terminal should be located above the level of the air inlet terminal Minimum Flue Terminations and Flue Air Air Inlet Dimensions mm Terminal Inlet A Below or beside openable window air brick etc 500 50 B Below gutters soil pipes drain pipes ie bs C Below eaves 300 50 D Below balconies or car port roof 200 50 E From vertical drain or soil pipes iis 50 F From internal or external corner 600 50 G Above ground or balcony or roof 300 100 H From surface facing a terminal 600 100
6. 0 38 1 130 000 40 0 1 36 500 ALAH S00 7 5 3 LOOKS Max Input GC Max Output to water 80 60 Flow Return kW Btu h kW Btu h kW Btu h kW Btu h Max Output to water 60 40 Flow Return Max Output to water 50 30 Flow Return Burner Setting Pressure Hot factory preset mbar in wg I s ft nr mbar in wg Gas Consumption after 10 mins Required Inlet Gas Pressure Dynamic Integral Shunt Pumps No No Yes Yes Max Operating Flow Temperature ce 80 0 80 0 80 0 80 0 Max Head Open Systems m 305 20 5 30 5 305 Max Press Sealed Systems Min Head Open Systems Electrical Supply Power Consumption Max Cabinet Height Cabinet Width Cabinet Depth Max Top Clearance Side Clearance Base Clearance Front Clearance Weight Full Weight Empty Flow and Return Connections Gas Connection Flue Pipe Size Nominal Bore Air Intake Pipe Size Nominal Bore Max Air Intake Length Max Combined Flue amp Air Intake Length Flue and Air Intake Material LPG Option available Optimum Flue Gas CO Level G20 KESTON Boilers 34 West Common Road Hayes Bromley Kent BR2 7BX UK kg lbs kg lbs Telephone 020 8462 0262 Fax 020 8402 44592 Email info keston co uk 270 3 0 230V 50Hz 600 890 500 327 254 27 305 68 1 50 61 134 35mm copper BSPT Male 50 2 50 2 E 30 270 3 0 230V S0FZ 600 890 500 327 254 Ze 305 68 1 50 61 134 35mm copper
7. aled and requires no ventilation for combustion air to the room or compartment in which tt Is installed The Keston commercial boilers are exceptionally easy to install and maintain and pipework header assemblies are available as an option to assist speedy installation They are completely environmentally sound with negligible NOx emissions Class 5 rated and can save 30 on the heating bill Practically 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 From initial purchase through to installation running and maintenance the Keston saves money time valuable space and aggravation In many commercial applications the Keston modular system has proved to be far less expensive to buy or install than the equivalent output single commercial boiler Safety Valve AV A IV X System flow s Low loss header KESTON IV Strainer IV X X System return s L X IV YY IV X Fill Point Shunt Pump XK integral on Keston 260 DOC _ Expansion and Keston 340 models _ Vessel Electrical Electrical supply and control of the Keston conde
8. ng of the flue This system Is also ideal for buildings with difficult flue options and particularly listed buildings with various restrictions Added benefits of 7 the flue flexibility is that the boiler can be sited practically anywhere in the most convenient position and the flue can be terminated in a location where the plume generated with a condensing boiler does not cause a visual nuisance The Keston modules use a high powered combustion blower to BOILER EFFICIENCIES IN deliver a premix of gas WATER RETURNING TO BOILER C and air to a downward High efficiency condensing boilers produce more heat using firing burner in a high the same amount of gas than any other type of gas boiler efficiency single pass heat exchanger The heat exchanger is made from highly corrosion resistant stainless steel formed into a tightly wound coil Hot combustion gases pass through the coil providing heat to the water system Shunt pumps integral to the appliance on the Keston 260 and Keston 340 will ensure each module receives the correct water flow when firing The Keston boilers are of low mass and low water content giving a rapid response when there is a call for heat The design of Keston boilers with its single pass heat exchanger avoids the complications associated with other condensing boilers and as a result does not require complicated printed circuit boards The unit is totally room se
9. nsing boiler is dependent on model as follows School Project 3 Keston 170 s on a rig Keston 130 and 70 10A permanent live 2A switched live on off control Shunt pump overrun control Keston 260 and 340 BA permanent live volt free link on off control as The Keston Condensing Boiler uses premix combustion technology which requires adequate gas supply pressure and flow at all times during operation Care should therefore be taken to ensure that the supply meter and distribution pipework is correctly sized for the gas flows required Details of gas consumption are provided on the back page of this brochure Keston 130 amp 170 Keston 260 amp 340 Maximum Air Inlet Length 5 0m 20 0m Maximum Flue Outlet Length 29 0m 39 0m Maximum Combined Air Inlet 30 0m 40 0m and Flue Outlet Length Slope Horizontal flue outlet pipework MUST slope at least 2 5 degrees 45 mm per metre run downwards towards the boiler Pipework can be vertical Only swept elbows can be used For installations requiring reduced slope contact Keston Boilers Technical Support Air inlet pipework can be truly horizontal or vertical or sloping in a downward direction towards the boiler but in this case rain etc must be prevented from entering the pipe There must be no troughs in any of the pipework whether it be air inlet or flue outlet Due to the low temperature of the flue To Terminal s gases further condensate
10. oiler by the boiler shunt pumps irrespective of system conditions The size of the balance header is dependant on the number of boilers serving the header A guide to sizing Is given here When assembling a balance header the following design considerations must be observed a Each boiler must have its own flow and return connection to the balance header pipe Common flow and return connections with other boilers can cause reverse circulation effects to occur b The minimum distance between the system flow and return connections is 600mm c Adrain off point should be fitted to the base of the header along with cleaning access for sludge removal The top of the header should be vented The boilers are designed for ease of servicing and installation On the Keston 260 and Keston 340 all servicing Is carried out through the front of the unit On the Keston 30 and Keston 70 additional access is required to the top of the cabinet for removal of the burner Details of installation clearances are provided in the table on the back page of this brochure l E s r ae s n he ae Hospital Project 6 Keston 170 s Preassembled Boiler Plant Rigs In circumstances where site time and or space may be at a premium Keston Boilers can provide a pre assembled solution to any plant room needs The Keston Rigs are delivered to site pre assembled and incorporate up to three units within a floor standing f
11. rame The units are pre piped to a single balance header The Keston Rigs include Safety Valves Up to three Keston Isolating Valves commercial units as Test Points specified by the customer Drain Points Individual shunt pumps Single Balance Header for each unit sized according to output The incorporated equipment is pre piped and pre wired ready for immediate connection within the plant room The balance header includes tappings for air vent fill point expansion vessel drain off and system flow and return The number and size of system tappings is as per the customers own specification Floor Standing Boiler Frame Where plant room wall space is at a premium a floor standing frame is available for the Keston 260 and Keston 340 Balance Headers A range of standard headers is available from Keston Boilers Ltd for single and multiple installations In addition bespoke headers can be produced in order to meet customers specific requirements 7 Keston 340 10 0 375 300 297 ON 357 6000 104 0 3 54 800 O7 8 367 800 0 2 264 362 Keston 260 84 6 288 650 76 1 252 650 7 5271250 82 9 4282 850 2337 219279 20 0 8 0 20 0 8 0 20 0 8 0 20 0 8 0 Recommended Temperature Differential a lO to I5 IO to 15 0 to I5 lO to l9 Required Water Flow Rate I s 0 83 1 00 60 2 00 Keston 170 55 0 1 87 660 49 8 1 70 000 92 4 172 800 54 5 186 000 O 0 4 EAZ eT Keston 130 42 3 144 33
12. rs are very low Due to this fact no compartment ventilation is required for cooling purposes Condensate Drainage Being a condensing boiler the Keston is fitted with a condensate trap at the base of the heat exchanger and flue assembly with facility to connect to a drain point underneath the appliance Use only plastic piping and do not reduce below 22mm internal diameter within the dwelling Condensate should preferably be drained into the sanitary waste system or alternatively the rainwater system of the property Termination of the pipe must be either at a branch or stack internal to the building or externally at an open gully Alternatively discharge into a purpose made condensate soakaway can be considered Existing or purpose built drains must use suitable corrosion resistant material as condensate is mildly acidic A minimum slope downwards towards the drain of in 20 is essential Freezing of the termination and pipework must be prevented Any drainage pipes outside the property must be at least 32 mm inside diameter Multiple Common Balance Headers Boiler water flows are critical to the operation of the boilers If flow cannot be maintained through the system pipework to meet the minimums required by the boiler the boiler will kettle or even produce steam The implementation of a balance header as shown in the schematics is recommended to ensure adequate water circulation is maintained through the b
13. tanding frame P icall here Compact size from 889H x 500W x 327D Completely room sealed can site practically anywhere no need for expensive dedicated boiler room with Up to 99 1 efficient can save 30 or more on fuel bills ee p combustion air ventilation with virtually no NOx emissions Class 5 rated Integral shunt pumps on Keston 260 and 340 models Flue system is small diameter plastic pipe with lengths up to 39m Keston 260 and 340 vertical or horizontal can Perfect match for Keston Spa hot water storage system high efficiency commercial models up to 450 litre save thousands of pounds in installation costs storage Purpose designed boiler plant rigs available for easy No complicated PCB s installation and drastically reduced site time l Exceptionally high quality stainless steel single pass heat exchanger LPG options available for Keston 130 and Keston 70 CE Marked British Gas Approved and manufactured to ISO 900 120 O The patented 7 micro mesh burner x 100 produces a low flame 90 temperature and super W low NOx combustion 5 80 at levels well below A 70 any published requirement 60 q 7A 9 PROPOSED a 40 GERMAN a BLUE ANGEL z LIMIT S 20 IO KESTON Keston Commercial Higher Output Keston 260 and Keston 340 Following the immediate success of the Keston 130 38 kW and the Keston 70 50 kW light commercial models Keston Boilers launched two additional
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