Specialists in innovation
June 01st 2005 The Stokvis Econoflame 2700 to 3600 series ultra low NOx boilers: high efficiency units with capacities from 95kW to 1031 kW output. Fully modulating boilers characterized by low energy consumption and by maximized efficiency of 93.4 % (gcv), (@ 30% input, 36-30°C).
Owing to their small water volume, these boilers have the added benefit of low standby losses. The basis for this heating technology performance was created by the integration of the sophisticated premix combustion system based on the latest ribbed-tube technology. It is possible to put the instant–heating principle into effect up to such a point that heat transfer already takes place in the burner itself. At the same time, the water cooled, bimetal burner makes sure that the emission of NOx and CO is reduced to an absolute minimum. Hence all current, and proposed Part L Regulations are well and truly surpassed. NB 2900 and 3600 series Econoflame boilers are fully condensing.
Premix: The Ultimate in innovation Technology, a frequency controlled fan blows an optimum mixture of gas and air through the burner, creating a homogeneous flame bed, without the risk of flame flashback. As a result, flame temperatures and retention times of flue gases in the combustion chamber are reduced drastically and thereby the NOx emissions as well.
The Stokvis Econoplate packaged Plate Heat Exchanger units are available in up to seven ranges covering some 200 plus units fulfilling a tremendous variety of applications. From simple domestic hot water generation to swimming pool heating or even complex process heating and beyond, Stokvis have a unit and the expertise which would satisfy your demands. Stokvis Econoplates are designed to provide hot water instantaneously, from zero output up to their maximum rated output, without the need for hot water storage.
The principle is simple, well proven and extremely cost effective. All of the Econoplate units are built around an epoxy coated chassis which contains the heat exchanger. This heat exchanger is constructed from a number of gasketed, stainless steel plates – easily increased should demand require. Their low water content and low thermal inertia make them ideal for use in systems with rapidly changing heat outputs.
The Econoplate units (with the exception of bare plate units) come complete with primary pump(s), fast acting 3 or 4 port motorized control valve on the primary circuit, and purpose built PID controller for sensing secondary water temperature and controlling the motorized valve.
In addition the PID control panel on the ‘E’series plate heat exchanger also contains: - All functional indicator lamps and LCD display of faults
- Control and output fuses
- High / low temperature alarm lamp
- Common volt free temperature alarm terminals
- High temperature lockout
- All control adjustments
- A 7 day time clock for either:
- 2 temperature of operations / day
- A single temperature and night off / day
- Duplex pump duty sharing
- External control circuit for 2 temperates or 1 temperature and off
- External interlock circuit
- 4 – 20mA temperature output signal
On the E4B and E3C models primary pump overloads are also included as standard with auto change over on units fitted with duplex primary pumps. Volt free pump run or fault indication is available as an option.
The Stokvis Econoplate packages can be accommodated into most BMS systems via volt free contacts for external high/low temperature alarms the external control circuits etc. and optional primary pump run and trip indication. NB Steam to water models also available.
The Econoplate is easy to install, operate and maintain; fast and effective in response, tried and tested in operation and with none of the unhealthy drawbacks of storage systems. The Econoflame 2700 boilers, provide the perfect solution for a heating and hot water system. More articles from Stokvis Energy Systems: | 
