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Water Supply system
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Operating range of shower outlets
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Flow rate classes
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Acoustics
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Marking
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|---|---|---|---|---|---|---|
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Limits
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Recommended
|
See clause
12.0
|
See clause
6.0
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| Type 1 see Figure 1 |
Dynamic Pressure
(0,05 to 0,5) MPa
(0,5 to 5) bar
|
Dynamic Pressure
(0,1 to 0,3) MPa
(1,0 to 3) bar
|
ZZ | (0,025 ≤Q < 0,12) l/s (1,5 ≤ Q < 7,2) l/min |
Group I
Group II
|
for example
I A
II B
|
| Z | (0,12 ≤ Q < 0,20) l/s (7,2 ≤Q < 12) l/min | |||||
| A |
(0,20 ≤ Q < 0,25) l/s
(12 ≤Q < 15) l/min
|
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| S |
(0,25 ≤ Q < 0,33) l/s
(15 ≤ Q < 20) l/min
|
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| B |
(0,33 ≤ Q < 0,42) l/s
(20 ≤ Q < 25) l/min
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| C |
(0,42 ≤ Q < 0,50) l/s
(25 ≤Q < 30) l/min
|
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| D |
(0,50 ≤ Q < 0,63) l/s
(30≤ Q < 38) l/min
|
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| Type 2 see Figure 2 |
Dynamic Pressure
(0,01 to 0,2) MPa
(0,1 to 2) bar
|
Dynamic Pressure
(0,02 to 0,1) MPa
(0,2 to 1) bar
|
E |
(0,06 ≤ Q < 0,14) l/s (3,6 ≤Q < 8,4) l/min
at (0,01) MPa (0,1 bar)
|
(unclassified) | |
| H |
(Q≥ 0,14) l/s
(Q ≥ 8,4) l/min
at (0,01) MPa (0,1 bar)
|
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| Temperature | T ≤ 70°C T < | T≤ 42°C | ||||

| 1 | Cold water |
| 2 | Hot Water |
| 3 | Mains supply pipe (Supply pressures up to 10 bar) |
| 4 | Water heater |

| 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 10 bar) |
EN 1112:2008