We believe in offering our installers expert support. No matter if it’s the first time you try one of our products, or if you run into extremely challenging situations.
Below we have answered frequently asked questions from our customers. If you do not find your answers here please contact your closest wholesaler or ESBE Sales company in your country.
You can find contact information in the Contact section.
On this web site you can find the user instruction under the specific product page and the folder "Download Area".
Contact your local dealer for pricing and delivery information.
ESBE do not sell directly to the installers. Instead we sell our products via wholesalers/distributors.
Please contact customer service to find a distributor near your location.
Heating, Ventilation, Air Conditioning
Kvs is a measure of a valve’s flow capacity, calculated as follows
Add 1 bar differential pressure over a valve and leave it running for 1 hour
The accumulated flow through the valve in m3 = the kvs value
Cv is the american unit and represent the flow in U.S. gallons / minute at a pressure drop of 1 psi. For conversion from Kv to Cv use the factor 1.16 ( 1.16 * Kv = Cv).
The heating and sanitary water should never be mixed, but always kept in separate circuits!
Typical features of heating systems
The same water is circulated
Pressure is created by a circulation pump
Possible to use iron valves due to limited oxygen supply
Typical features of sanitary systems (Domestic hot water)
Water is continuously added
Pressure is created by a water tower
Brass valves required due to oxygen influx along with added fresh water
If water is carefully added and withdrawn from a storage tank, the laws of gravity will keep the hot water in the top of the tank, and the cold water in the bottom of the tank.
The heat energy in the tank is concentrated in the top of the tank, ready for use. It is much more useful to have a smaller quantity of hot water than a large quantity of warm water which does not have enough temperature for a shower or bath.
An example to illustrate the benefits of achieving good stratification, three tanks with the same energy contents, but split differently.
Tank to the left
No stratification achieved, 40°C in the entire tank:
Not hot enough for tap proper domestic hot water comfort (the temperature will drop a little during transport in the pipes, making it barely body-warm when reaching a shower etc).
Not legionella safe.
Not hot enough to be used for regular radiator heating.
Tank in the middle
Some stratification achieved, 50°C in the top of the tank and 30°C in the bottom:
Hot enough for domestic hot water comfort.
Not legionella safe.
Possible to use for some radiator circuits, but not all.
Tank to the right
Good stratification, 70°C in the top of the tank and 20°C in the bottom:
Hot enough for domestic hot water comfort
On this web site you can find the Spare parts documentation under the specific product page and the folder "Download Area".
ESBE AB, Bruksgatan 22
SE-333 75 Reftele, Sweden
Tel: +46 371 570 000
E-mail: [email protected]