8
INSTALLATION
General
Installation must be carried out in accordance with these instructions, and
must be conducted by designated, qualified and competent personnel.
1.
Before commencing, ensure that the installation conditions comply with the
information given in
SPECIFICATION
.
2.
Care must be taken during installation to prevent any risk of injury or damage.
3.
The mixing valve should be positioned for easy access during use and
maintenance. All routine maintenance procedures can be conducted with the
mixing valve body in place. For all models, allow a minimum 100 mm clearance
in front of the temperature control to enable removal of the Radatherm cartridge
during maintenance.
4.
The use of supply-line or zone strainers will reduce the need to remove debris
at each mixing valve point. The recommended maximum mesh aperture
dimension for such strainers is 0.5 mm
5.
Pipework must be rigidly supported.
6.
Long pipework dead-legs may effect shower performance.
7.
Supply pipework layout should be arranged to minimise the effect of other outlet
usage upon the dynamic pressures at the mixing valve inlets.
8.
Inlet and outlet threaded joint connections should be made with PTFE tape or
liquid sealant. Do not use oil-based, non-setting jointing compounds.
9.
To eliminate pipe debris it is essential that supply pipes are thoroughly
flushed through before connection to the mixing valve.
10.
Inlet isolators must be used in the fully open position.
11.
Do not install the Rada 320 c in a position where it may become frozen.
Outlet Position/Reversed Inlets
All Rada 320 c mixing valves are supplied with the inlet connections configured
hot
- left, cold - right
, and
top outlet
as standard.
Should the existing hot and cold pipework make this configuration inconvenient then
remove the cartridge assembly and turn it through 180
o
(Refer to
MAINTENANCE
for cartridge removal and re-assembly).
If a bottom outlet position is required, remove the blanking cap from the bottom of
the valve and replace it with the fitting from the top of the valve. Then fit the blanking
cap to the top of the valve.
