Harleqin Heatstream 200L Direct Mains Pressure Hot Water Storage Tank 200Dir

[PDS]

Hi All,
I’m fitting my first Harlequin unit next week and would appreciate any advice or tips you guys may have.
The installation guide recommended either an expansion vessel or shock arrestor, what would be the preferred unit?
Thanks in advance.

 

[townfanjon]

If this is what I think it is , its a thermal store . So should only need a shock arrester or small ex vessel just used on the incoming mains . What do the Mi’s say ?

 

[PDS]

Yes, you’re correct in thinking it’s a thermal store. Providing mains pressure domestic hot water to all taps.