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Ensbury LT 70 - 580 

We reserve the right to make changes to dimensions and construction 

edition 12.2020 

Hamworthy Heating Limited – Dorset BH17 ONF 

 

 

 

 

2.  Description 

2.1.  General information 

Ensbury LT boilers are high efficiency, power- saving low 

temperature boilers ranging from 70 to 580 kW and from 

65 to 500 kW for low-NOx applications. They can be 

operated in combination with oil or gas burners. 

Ensbury LT boilers are three pass, smoke tube boilers with 

combustion chamber and flue way using the Low-Nox 

technology. The third pass is equipped with turbulators. 

Their turbulent action further increases the heat exchange 

and allows the system to work at low combustion gas 

temperatures, guaranteeing optimal fuel use as a result. 

 

The PYROFLOW system simplifies the conception of the 

installation and considerably improves profitableness and 

reliability. 
The idea behind the PYROFLOW system is to heat the cold 

return water by means of internal heat exchange and mixing with 

the warm boiler water. 
The cold return water is fed to a distributor (1) and from there into 

collector (2), which completely encapsulates the internal supply 

pipe (3). The return water is preheated within this collector. 

Calibrated holes (4) all along the bottom of the collector guide the 

water towards the furnace while preventing any contact with the 

flame tubes. The hot furnace surface further heats the water, 

which is consecutively mixed with the boiler content. 
The supply temperature is governed by means of the numerical 

Ygnis governor, which pilots the mixing valves of the hydraulic 

units, or in case of cascades, the closing valve of the boiler in 

question. 
The symmetrical geometry of the boiler and the large water 

volume assure a homogeneous temperature distribution and an unhindered natural convection. 
This concept, coupled with the Ygnis patented flame escape system, also allow users to obtain low emission 

values and safe operation in conformity with law provisions. 

The boiler’s thermal insulation is made of glass fiber felt that adheres to the boiler shell, guaranteeing minimal 

loss in stand-by mode. 

A soundproofing hood can be optionally provided that covers the whole of the front of the boiler, with which 

burner noise can be kept down to a minimum and thermal radiation can be further reduced. 

In addition, the front part of the boiler is provided with superior quality ceramic fiber insulation. A revolving door 

gives easy access to parts of the boiler that are in contact with combustion gases. This allows cleaning of 

combustion chamber and passage ways to be easily performed from the front. 

The combustion gas collector on the rear of the boiler is provided with an opening for easy cleaning. 

The boiler’s thick casing is easy and quick to install. Casing plates are painted with a environment-friendly paint, 

so they are permanently protected from corrosion. 

A divided version of the boiler range can be made available as custom made option. Thanks to the inferior 

dimensions of the individual parts, this version is most suitable when bringing-in conditions are tight. The 

individual prefabricated parts must be welded together in the boiler room. 

 

2.2.  Conformity and certificates 

This boiler fulfills the requirements of the low voltage directive 2014/35/EU, of the EMC-directive 2014/30/EU 

and the efficiency directive 92/42/CE for low temperature boilers as well as the 

GAR 2016/426

The boiler range with ECA-rating has efficiencies in conformity with the requirements of the Enhanced Capital 

Allowance Scheme (ECA). 

The Directive

 2009/125/EC 

and its rule of application EU 813/2013 of 02 August 2013, laying down the 

requirements of eco-design applicable to devices of heating premises, relates only to the product

s ≤ 400 

kW. Based on this: 

The Ensbury LT Models 70 to 370 are not intended for heating the premises, 

The Ensbury LT models 

440

 to 580, which are not affected by these requirements, can be used for 

heating premises. 

 

Содержание Ensbury LT 70

Страница 1: ...Manual Ensbury GB doc edition 12 2020 Hamworthy Heating Limited Dorset BH17 ONF Installation and operating instructions Ensbury LT 70 580...

Страница 2: ......

Страница 3: ...quipment 14 5 4 Heating regulators 14 5 5 Cable set 14 6 Installation guide 15 6 1 Boiler room and boiler room ventilation 15 6 2 Planning dimensions 15 6 3 Placement into the boiler room 16 6 4 Hydra...

Страница 4: ...ust be free of halogens chlorine and fluorine compounds If there is any doubt the quality of the combustion air must be ensured with an external air intake ELECTRICAL INSTALLATION Electrical connectio...

Страница 5: ...users to obtain low emission values and safe operation in conformity with law provisions The boiler s thermal insulation is made of glass fiber felt that adheres to the boiler shell guaranteeing mini...

Страница 6: ...t pressure other pressures on request 6 0 bar g Min operating pressure 0 5 bar g Boiler supply and return pipe flanges PN 6 Safety cut out temperature 110 C Max operating temperature 90 C Operating te...

Страница 7: ...ired The fill water must be treated and whenever new water is added the make up water must also be treated Installations with multiple boilers require all of the boilers to be brought up simultaneousl...

Страница 8: ...o add buffer volumes to the plant s hydraulic system to avoid short operating cycles especially when the boiler is protected by an isolation plate heat exchanger Regarding the regulation of the instal...

Страница 9: ...1 4 1 1 4 1 1 4 1 1 2 1 1 2 1 1 2 Height supply connection n mm 757 757 835 835 835 835 900 900 900 978 978 1053 1053 1053 Height return connection r mm 757 757 835 835 835 835 933 933 933 993 993 106...

Страница 10: ...82 1086 Weight empty 10 bar G kg 328 329 478 479 541 542 617 711 712 909 911 1193 1196 1200 Lenght supply return f mm 114 114 114 05 07 TN 4 4 2 Divided version Also available as a custom made option...

Страница 11: ...5 0 95 0 95 0 95 0 95 0 95 1 95 1 Overall efficiency tm 40 C 30 3 95 6 95 7 95 7 95 8 95 8 95 9 95 9 95 9 96 0 96 0 96 0 96 0 96 0 96 0 Efficiency DIN4702 8 60 75 C N 2 93 7 93 9 94 0 94 1 94 2 94 3 9...

Страница 12: ...5 33 0 36 7 40 7 48 0 55 9 63 7 min 1 2 2 6 2 8 3 8 4 3 4 5 5 0 5 7 5 5 6 1 7 4 8 1 9 6 10 6 13 1 Exhaust gas mass flow max wet kg s 0 03 0 04 0 05 0 07 0 07 0 09 0 10 0 12 0 14 0 15 0 17 0 20 0 23 0...

Страница 13: ...m power of the boiler is limited by the minimum allowable flue gas temperature Consequently the modulation range increases when the average boiler temperature increases This is exemplary illustrated i...

Страница 14: ...and 2nd speed 2nd speed inactive for a NAVISTEM B2000 panel with RVS 63 regulator Overheat indicator Burner safety indicator External fault indicator Water thermometer 5 3 Additional equipment Timer...

Страница 15: ...solvents among others In addition halogen emissions are strongly suspected in the vicinity of dry cleaners hair dressing salons swimming pools printing offices and washing machines installed in the sa...

Страница 16: ...mm 844 844 986 986 1186 1186 1186 1445 1445 1445 1445 1701 1701 1701 Boiler feet width b mm 640 640 740 740 740 740 790 790 790 870 870 938 938 938 Vibration damper length e mm 130 130 130 130 130 130...

Страница 17: ...in the form of correctly used oxygen binding agents or chemicals If it is not possible to realize an installation without oxygen entrance a system separation must be set up using heat exchangers 6 5...

Страница 18: ...se that are open on the rear part in the direction of the combustion gas collector Also read and follow the instructions in the assembly guide L Da 0007AX Ensbury LT 70 90 120 145 165 190 225 260 300...

Страница 19: ...ce door flange pivot LS mm 45 45 45 45 45 45 45 45 45 45 45 45 45 45 Door thickness e mm 115 115 115 115 115 115 115 115 115 115 115 116 116 116 09 06 Burner tube lengths without consideration of an e...

Страница 20: ...9 Flue gas system The pertinent rules of technology and good practice as well as the country specific regulations and valid standards must be observed The Ensbury LT boilers have been developed using...

Страница 21: ...pumps should be switched off and all ventilating valves opened so that the air in the system can completely escape The filling process is finished when the operating pressure has been reached 7 4 Prot...

Страница 22: ...ound the burner tube has been filled with insulation material Whether the boiler door is closed properly Whether the heating system has been filled up with water and completely vented Whether the ther...

Страница 23: ...nnect supply and burner plug Burner LED is on Press burner reset button No oil Gas pressure insufficient Add oil Call the gas board Overheat temperature LED is on Safety thermostat has come into opera...

Страница 24: ...tem blowers Carry out burner maintenance according to the recommendations given in the burner manual Check fuel oil level Clean boiler and chimney 9 2 Boiler cleaning Boiler should be cleaned by your...

Страница 25: ...1550 mm 113165 1750 4 Smoke chamber lid seal 10 x length 113177 800 mm 113177 800 mm 113177 800 mm 113177 800 mm 113177 800 mm 113177 800 mm 5 Turbulator Pieces 120283 9 122517 9 122517 11 120284 11...

Страница 26: ...ction 26 edition 12 2020 Hamworthy Heating Limited Dorset BH17 ONF Wessex House New Fields Business Park Stonsford Road Poole Dorset BH17 ONF Tel 01202662500 Fax 01202 662522 seNice hamworthy heating...

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