User guide

9
Installation Requirements
Supply System Flow Regulator
Cold Supply Hot Supply Cold Hot Comments
0.1 to 1.0 bar 0.1 to 1.0 bar No No
Maximum pressure
loss ratio 5:1
1 to 5 bar
or pumped
1 to 5 bar or pumped
Green
(7 litre)
Yellow
(5 litre)
◊ Use arrangement
for pumped system
Mains
1.5 to 10 bar
Gravity
0.1 to 0.2 bar
White Disc No
Gravity
0.2 to 0.5 bar
Green
(7 litre)
No
Gravity
above 0.5 bar
Green
(7 litre)
Yellow
(5 litre)
Unvented Mains /
Mains Pressurised
Instantaneous Water
Gas Heater
Green
(7 litre)
* Yellow
(5 litre)
** Instantaneous Water
Electric Heater
Yellow
(5 litre)
No
Any Vented (open outlet)
Heater Gas / Electric.
Eg electric shower
Do not use with a mixer valve -
this would be extremely dangerous
Selecting Flow Regulators
Regulators can be fitted if water economy is required.
Yellow (5 litre) regulator may not be necessary on some gas water heaters.
Important: It is a requirement of Instantaneous Electric Heaters that a stable
flow of water passes through the heater. This requirement can be satisfied by
using a ‘flow stabiliser’ fitted prior to the heater and should be adjusted to give a
temperature of between 45 - 50˚C from the heater.
◊
*
**