We reserve the right to change designs and technical specifications of our products.
10
4. Design of cold and hot water supplies
4.1 General requirements
a. Minimum dynamic mains water supply pressure
= 1.5 bar
b. Maximum dynamic mains water supply pressure
= 10.0 bar
c. Mains cold and hot water pipe sizes maximum 22mm copper or equivalent
d. Expansion vessel charge pressure (If fitted)
= Incoming mains pressure (bar)
Note: Although the heat storage are designed for 10bar maximum working pressure, it is recommended that if the incoming mains pressure is
greater than 5bar, an approved pressure regulator set at 5.0bar should be fitted for comfort of the occupants.
4.2 Water distribution network design
a. The water distribution network should be sized and designed to comply with the requirements of the relevant sections of EN1717.
4.3 Hot water circuit including expansion vessel
A --> cold in HPC
B --> cold in LPC
C --> warm out (LPC)
D --> warm out (HPC)
4.4 Hard water areas
In hard water areas where mains water hardness can exceed 150 ppm Total Hardness, you must install a scale reducing device in the cold water
supply to the heat storage to reduce the rate of accumulation of limescale.
Wasserhärtgrad
< 8,4 °dH
Hardheid water
< 150 ppm
Classe de dureté de l‘eau
< 15 °fH
5. Installation Guide lines
5.1 General
a)
The heat storage must be earthed.
b)
The point of connection to the mains should be readily accessible and adjacent to the heat storage installation.
c)
See for general installation “Quick start guide “ FlexTherm Eco
d)
Every FlexTherm Eco E unit is equipped with an automatic fuse to protect the heating element for overheating.
ENG
