spartan vessel

[Kerr Gas 1]

Hi all,

came across a spartan vessel today, can anyone give me an idea how these work, i have seen them before but just cant remember much about them. i'm needing to fill the c/h system and Hw tank tomorrow so a heads up would be great. ive suggested a new system but customers arent in the position to go to that expense.

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[the_ace]

I've been on the hunt for info on these and came across this - The Spartan expansion vessel came in 2 standard sizes, ET50 & ET100, the numbers representing the water capacity of the heating system, that the vessel could be used with. I think Spartan is an acronym for “Self Priming Automatic Recovery Tank”.

Basically the Spartan is in 2 sections, split top and bottom. Water from the domestic side of the system is piped through one of the side fittings, into the top chamber. In the middle of the top chamber is an upstand pipe. Once the water level reaches the top of the upstand pipe it overflows into the bottom chamber. The bottom chamber is connected to the central heating system, this water from the DHW system is used to fill the central heating system.

The functions of the Feed and Expansion Tank in a normal open vented system, are taken care of within the Spartan. Basically the head of water in the DHW header tank and the internal layout of the Spartan prevent water in the 2 separate systems from mixing under normal conditions.

It’s pretty simple, as long as the Purgomat (Automatic Air Vent), which is connected to the bottom of the chamber of the Spartan is working ok, it shouldn’t cause too many problems, as there are no other working/moving parts to worry about.