1 Scope
The purpose of this European Standard is to define requirements for marking, identification,
leaktightness, electrical and operational safety and mechanical resistance for sanitary
tapware with opening and closing controlled electronically.
The conditions of use for the supply system type are specified in Table 2:
Table 2
—
Conditions of use
|
Water supply system
|
Limits of use
|
Recommended limits of operation
|
|||
|---|---|---|---|---|---|
|
Tapware with normally open or normally closed (monostable) solenoid valves
|
Tapware with latching (bistable) solenoid valves
|
Tapware with normally open or normally closed (monostable) solenoid valves
|
Tapware with latching (bistable) solenoid valves
|
||
| Type 1 (see Figures 1) | Minimum dynamic pressure | 0,05 MPa (0,5 bar) | 0,05 MPa (0,5 bar) |
(0,1 to 0,5) MPa [(1 to 5) bar]
|
(0,1 to 0,5) MPa [(1 to 5) bar]
|
| Maximum static pressure | 1 MPa (10 bar) | 1 MPa (10 bar) | 1 MPa (10 bar) | 0.8 MPa (8 bar) | |
|
Type 2 a (see Figures 2)
|
Minimum dynamic pressure | 0,01 MPa (0,1 bar) | 0,01 MPa (0,1 bar) |
(0,01 to 0,2) MPa [(0,1 to 2) bar]
|
(0,01 to 0,2) MPa [(0,1 to 2) bar]
|
| Maximum static pressure | 1 MPa (10 bar) | 1 MPa (10 bar) | 0.8 MPa (8 bar) | 0.6 MPa (6 bar) | |
| Temperature of the water | ≤ 75 °C | ≤ 75 °C | ≤ 65 °C | ≤ 65 °C | |
a For Type 2, the manufacturer is to declare the minimum operating pressure at which
opening, closing and the specified flow rate can be obtained.There is usually no acoustic
classification for tapware used in supply systems of Type 2 and no specifications
governing the level of noise emissions from these water installations. If supply pressures
are such that excessive noise is generated it is recommended that pressure or flow
regulators are fitted in the system. Or where practicable, tapware conforming to the
appropriate acoustic classification are used.
Annex B lists possible consequences of using a product outside its recommended operating
range.
Figure 1
—
Type 1 — Supply system with a pressure range of (0,05 to 1,0) MPa ((0,5 to 10) bar)
| 1 | cold water | 3 | mains supply pipe (Supply pressures from (0,05 to 1,0) MPa ((0,5 - 10) bar) |
| 2 | hot water | 4 | water heater |
Figure 2
—
Type 2 — Supply system with a pressure range of (0,01 to 0,8) MPa ((0,1 to 8) bar)
| 1 | cold water storage cistern (cover omitted for clarity) |
| 2 | warning pipe |
| 3 | vent pipe |
| 4 | hot water cylinder |
| 5 | alternative cistern fed cold supply to sanitary appliances |
| 6 | to boiler |
| 7 | mains supply pipe (Supply pressures up to 8 bar) |
A vented domestic hot water and cold water supply system incorporating gravity hot water, mains cold water and alternative gravity cold water supply to sanitary appliances.