rada 320, Manual, Page: 11 / 32

11 1300905-W2-A
1. Installations must comply with all Local/National Water Supply Authority Regulations/
Byelaws and Building and Plumbing Regulations.
2. 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 cartridge assembly during maintenance.
3. Conveniently situated isolating valves must be provided for maintenance (not applicable
for cx version as isolators are supplied).
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. Inlet and outlet pressure tappings should be provided to enable continuing accurate
assessment of operating conditions. This is especially important in healthcare applications.
6. Pipework must be rigidly supported.
7. Pipework dead-legs should be kept to a minimum. The mixed water outlet piping should
not exceed 2 m and the overall length from the hot water circuit to the discharge point
should not exceed 5 m.
8. Supply pipework layout should be arranged to minimise the effect of other outlet usage
upon the dynamic pressures at the mixing valve inlets.
9. Inlet and outlet threaded joint connections should be made with PTFE tape or liquid
sealant. Do not use oil-based, non-setting jointing compounds.
10. To eliminate pipe debris it is essential that supply pipes are thoroughly flushed through
before connection to the mixing valve.
11. Inlet isolators must be used in the fully open position.
12. Do not install the Rada 320 valve in a position where it may become frozen.
Outlet Position/Reversed Inlets
All Rada 320 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).
Installation
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.
Note! The 320 valve is available in a number of variants to suit your particular application.
Primarily the installation procedure for the 320 IC valve is shown. Most of the procedural
steps are very similar for all variants.