Technical data

Procon
. E C.
In accordance with BS : , BS : , WRAS Regulations, and Local Authority Water Regulations,
as applicable, the installer shall install a suitably sized, and approved, Expansion Vessel to ensure that the water
capacity of the system has ample expansion capacity.
The location of the expansion vessel shall only be isolatable from the system via a Lockable Type Service
Valve which shall be locked in the OPEN position, to prevent accidental isolation.
Furthermore, a drain facility should be provided adjacent to the expansion vessel to aid the routine mainte-
nance, overhaul, of the vessel’s Air Pressure setting.
The Procon  &  boilers ONLY, are supplied with an internal -litre expansion vessel. This vessel is suitable
for a system with a maximum capacity of  litres. This is based upon a Cold Fill Pressure of .bar, and a Final
Working Pressure (HOT) of .bar.
For information on a comprehensive range of expansion vessels that comply with current Standards
and WRAS Regulations, please contact RVR Limited.
Fig .a – Connection Details for Models ,  & 
* – Parameter Change Required.
Fig .b – Connection Details for Model 
* – Parameter Change Required.
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