Electric Unit Heater Range – Outputs – 3 kW to 27 kW
Electric Unit Heaters -are low noise, electrically powered efficient fan heaters for fixed installation that are suitable for warm air heating, drying and /or ventilation of larger areas such as warehouses, factories, depots, shopping centres or individual shops, workshops, storage areas, garages and production facilities. They are often installed where there is no access to another source of heat such as a gas or hot water powered heating system, or for their higher efficiency, as they are 100% efficient and can be supplied with zero carbon energy if renewable electricity is supplied to the heaters.
Commercial and Industrial Electric Unit Heaters
We do an extensive range of electric unit heaters at Flexiheat UK, we have 3 ranges within our commercial offering, these are –
- Our “LEO EL BMS” range – This is our most popular and best-selling units. They are a commercial and industrial electric unit heater that is the most controllable on the market. These unit heaters are controlled by an intelligent control called the “T Box”. This controller can control up to 31 electric unit heaters, or a mixture of any of our LEO range of water fed unit heaters or our LEO D destratification fans in conjunction with these electric unit heaters.This controller allows advanced control of heating and ventilating system, controlling the units according to your time schedule and individual needs.The “T Box” controller is also BMS (Building Management Control) compatible allowing a central control system to control the operating times and performance of these unit heaters.The largest output of this range is 22.8kW
- The “FHSH” is more of a commercial electric unit heater – this range is a very basic heater, and lacks the controllability of our other heater units, in that it has to be manually controlled on and off, but it is the most economical in the range of our electric unit heaters. The maximum heating output of this range is 15 kW and their maximum heat throw is 7 metres at maximum fan speed.This range must be wall mounted only.
- A stainless-steel electric unit heater, designated the “FHLB9KW” – This unit is a particularly suited to applications that require IP54 protection is a requirement such as heating farm buildings or barns etc or in any damp or humid areas. Its heating output range is between 1.8kW to 9kW.
- The largest electric unit heaters that we do at present – the “FHTHERM” range -These industrial electric unit heaters, which can be wall or ceiling mounted have the largest heat output at 27kW. They have additional controllers available, but lack the facility to be connected to a BMS system like the LEO EL BMS units can be.
Technical data “LEO EL BMS” – Industrial & Commercial Electric Unit Heaters
|LEO EL S BMS||LEO EL L BMS|
|Heating capacity [kW]||5.3 – 10.8||6.8 – 22.8|
|Max. air flow [m3/h]||2,000||4,250|
|Power supply [V/Hz]||3×400|
|Rated current [A]*||15.6||33.3|
|Sound pressure level [dB(A)]**||56.3||64.1|
|Sound power level [dB(A)]***||71.4||79.2|
|Horizontal range [m]****||14||24|
|Vertical range [m]*****||5.3||8.3|
|Type of casing||powder-painted steel|
|Operational temperature [oC]||0 to +50|
|Position of operation||vertically on the wall, horizontally under the ceiling|
|Weight of unit [kg]||19.7||27.8|
*Temperature of 0°C at the inlet, 3rd speed of fan
**Acoustic pressure level at the distance of 5 m from the unit, in the room of medium capability of sound absorption and 1,500 m3 of area
***Acoustic power conforms with EN ISO 3744:2011
****Range of horizontal isothermal air stream, at 0.5 m/s velocity limit.
*****Range of vertical nonisothermal air stream, at 20°C at the inlet, 0.5 m/s velocity limit
Electric Unit Heaters – Applications & Function
The FHSH electric unit heater range of low noise,efficient fan heaters for fixed installation of larger areas are suitable for heating, drying and /or ventilation of larger areas. The heat output and fan speed is set via the control panel on this range of electric unit heaters. The adjustable wall mounting brackets allow the air stream to be directed to suit the site conditions. All of these electric unit heaters are made of corrosion proof housing of white powder coated steel panels, and are the perfect solution for your commercial or industrial electric heating needs.
The FHSH 6kW to 15 kW Electric unit heaters are not intended for use other than indoors and are only to be wall mounted and for this reason some people refer to them as wall mounted electric blow heaters, for ceiling mounted units that can blow the warm air down vertically , please see our “FHTHERM-E Range” , detailed on this webpage page .These electric unit heaters are appropriate for the heating of warehouses, workshops, storage rooms, show rooms, etc.
Installation time and costs are minimized when using our electric unit heaters as they are compact and completely factory wired, the unit heater only requires only a power supply connection to the heater. These units come with a control box, which should be mounted at point that gives easy access to the operator of the electric fan heaters. Several electric unit heaters may be control via one control box if so required.The controller makes it possible to control the 3 fan speeds and the 2 heat levels of the electric unit heaters. We supply as standard the wall mounting bracket and a controller , as a total package for these electric unit heaters, making them ideal solution as an electric unit heater for a garage or car workshops.
The air is carried through the heater by a fan and heated by non-corrosive elements which are regulated by the built in thermostat with at range of +5 to +35°C. The air speed is adjustable in three steps. Switching on or off, selecting half or full output and regulating the RPM is performed through the control box , which is wall mounted for easy access. The appliance is protected from overheating via a built-in temperature limiter.
Safety – There are a couple of common sense rules that apply to all electric unit heaters , these are –
- Ensure that the area around the intake and the exhaust grille is kept free from material which could prevent the air flow through the appliance.
- The electric unit heater has hot surfaces during operation.The heater must not be covered either with clothes or similar material since overheating of the appliance can result in a fire hazard.
Our electric unit heaters operate reliably when installed and operated as directed. In addition to meeting all requirements of the electrical standards , the heating element is backed with a two year warranty.
The “FHSH” Electric Unit Heaters are a great and inexpensive heating solution for garages,workshops, stores, sports and entrance halls, businesses, assembly and storage facilities, in churches and also in damp areas ( due to the IP44 electrical rating ). There are models with 6kW, 9kW, 12kW or 15 kW Outputs available within this range of warm air electric unit heaters.
- Very quiet due to low noise impeller fan
- Corrosion resistant – The Housing is manufactured in galvanized sheet steel,then powdered coated layers applied in an asthmatically pleasing white finish.
- Benefits from a robust front guard again powdered coated in a gray colour
- Maintenance and radio interference free warm air heater electric unit heaters
- Closed tube jacketed heating elements (non glowing type) made of stainless steel, with a low surface temperature
- Thermal overheating protection- Which has to be manually switched on again if it trips
- Splash proof design (IP 44) for operation in damp conditions
- Fan motor with thermal overload protection in protection class IP 44
- Protection against contact according to DIN EN ISO 1385 standards
- Air flow through the three Speed levels can be tailored to the room / area conditions.
- A Single stage capillary thermostat (Adjustment range of +5 to +40 ° C) regulates the electric unit heater output in relation to the set temperature point
- Every heater comes complete with an operation switch to control the speed and heating power of the heaters , especially useful when wall mounted
Electric Unit Heater / Commercial Electric Unit Heaters – Technical Information
Our small electric unit heaters provide a “heat throw” of 7 metres at maximum fan speed. The intelligent fan control optimizes fan speed and heat output to quickly achieve and control a comfort temperature whilst maintaining a very low noise level. Provides comfort heating while working in garages, workshops and warehouses and a great solution for commercial heating applications
Industrial Electric Unit Heaters – IP Rating & Electrical Standards
All of the “FHSH” Electric unit heaters are rated to IP44. This IP rating is made of up of two components , the first digit gives the level of protection that the enclosure provides against access to hazardous parts (e.g.- moving parts, electrical conductors,etc) and the ingress of solid foreign objects – for our electric units heaters this is 4 – and means that tools, wires, screws etc larger than 1mm are protected against . The second digit of the IP rating relates to the protection of the equipment inside the enclosure against the harmful ingress of water- This again is 4 for our electric unit heaters – and means that water splashing against the enclosure from any direction shall have no harmful effect. Thus IP44 means that the electric unit heater is protected from tools and small wires greater than 1 millimeter and protected from water spray from any direction.
These wall mounted electric unit heaters have been design an manufactured in accordance with the specifications of the following directives and standards –
MSD 89/392/EEC – 91/368/EEC, 93/44/EEC, 93/68/EEC, article 6, and the relating standard of EN 292-1, EN 292-2
LVD 2014/35/EU and the relating standard of EN 60335-2-30
EMC 2014/30/EU and the relating standard of EN 55014-1, EN 55014-2, EN 61000-3-2, and EN 61000-3-3
Electrical installation – The electrical installation should be carried out by a qualified electrician in conformity with prevailing regulations. The heaters must be connected to 3 Phase x 400 Volt~ via the CEE-plug, see the schematic. For connection between the control box FHCB2 and a FHSH heater, the connection should be made with a cable type H05VV5-F 0,75mm2 or similar may be used. On the back of the appliance there are two cable glands to be used for the connection to the control box FHCB2. When several heaters are connected to each other and controlled by a common control box FHCB2, it should be stated in the group centre that “the fan haters are fed from more than one group supply”
Electric Unit Heater in Stainless Steel IP54 Rated 9kW Output
We also do a stainless steel cased electric unit heater , which has an IP54 rating for electrical protection , and has a maximum output of 9 KW . This electric unit heater is particularity suited to heating farm buildings etc, where IP54 is a requirement or in any damp or humid areas .It is also used in dry environments such as in commercial buildings, warehouses, workshops and other places where the IP54 protection standard is required or any other applications where a fire hazard is of particular concern.The Stainless steel housing and the heating elements are made of stainless steel 316H ( this stainless steel grade has excellent corrosion resistance when exposed to a range of corrosive environments and media. It is usually regarded as “marine grade” stainless steel but is not resistant to warm sea water) and the IP54 rating provide an increased resistance to destructive dust,and water drops falling at any angle as well as aggressive gases which can cause accelerated corrosion to a non stainless steel cased electric unit heater. This 9 kW commercial or industrial electric unit heater has an inbuilt room thermostat to control the temperature and automatic protection against overheating.The step-less variable thermostat and accurately sized fan ensures an even temperature and good heat distribution.These industrial fan heaters can be controlled to give a 1.8 kW , 5.4 kW or 9 kW heat output as a three phase heater and has an inbuilt adjustable thermostat working in the temperature range from 0-40 ° C . It is also prepared for connecting an external thermostat if so required and can be used in a fan only operation to.They also make a perfect electric unit heater for a garage or workshop heating application.
Output in (kW): 1.8 kW / 5.4 kW / 9 kW
Mains voltage – (V): 3 Phase x 400 volts
Max mains current -(A): 16 Amps
Air circulation – (m²/t): 700 / 1000
Fan diameter – (mm): 300
Dimensions L X B X H – (mm): 670 x 450 x 600
Weight -(Kg’s): 18
IP Rating – IP54
Industrial electric unit heaters – Up to 27 kW of Heat Output
Last but not least within our range of electric unit heaters are our “FHTHERM-E” units.This range of industrial electric unit heaters have a couple of features that our other units do not have , these being –
- The ability to be ceiling mounted, blowing the warm air down, as well as horizontally mounted, blowing the warm air horizontally
- The ability to have a slot warm air diffuser or a discharge cone or nozzle
- This range goes up to 27 kW of heat output, which is the largest at present that we have
These two options that are available for ceiling mounted electric unit heaters are shown below – to the right of the standard single row distribution grid, which the units come as default.
NB – The maximum height at which you can mount these warm air electric unit heaters when using the slot diffuser is 4 metres .The discharge cone can also be fitted to the wall mounted industrial fan heater, to give it a larger air throw, if so required.
These industrial electric unit heaters are available in two sizes, both of which require a 3 Phase / 400 Volt supply –
The FHTERM -E 18 – Which is an 18kW maximum heat output, having three output settings of either – 6kW , 12kW or 18kW
The FHTERM -E 27 – Which is a 27kW maximum heat output, having three output settings of either – 9kW , 18kW or 27kW
The full technical details of this range of electric unit heater range are listed below –
We also supply a full range of additional accessories for these electric unit heaters, which allow you to mix a proportion of fresh air and recirculated air through the heaters, either via an external wall or a roof intake.
These include – Roof Intakes, Roof Bases, Wall Intakes, Intake Boxes, Suspension Brackets to suit and Air Filters , we go into more depth in the technical manual regarding these additional items . Below are some of the accessories available for the “FHTHERM” wall or ceiling mounted industrial electric unit heaters –
For the full specification and additional information on the “FHTERM” Industrial Electric Unit Heater range, please see it’s dedicate web page
Electric Unit Heaters for Sale UK & Ireland
Should you require anymore assistance or information on our Electric Unit Heater /Industrial & Commercial Electric Unit Heaters / Electric Unit Heaters , please don’t hesitate to contact our sales team on 01202 822221 or click here for our email contact form