Steve,

My thermostat hole is plugged and have a #30 hole drilled through the plug.

Bobby

Sent from my iPad

> On Dec 26, 2017, at 9:18 PM, Stephen Izett stephen.izett@gmail.com <flyrotary@lancaironline.net> wrote:
>
> Merry Christmas to all
>
> I’m still troubleshooting our cooling system.
> Renesis 4 port in Glasair Super II RG
>
> We removed the thermostat, and plugged the whole between the in and out circuit with a threaded plug.
> I think I read someone saying there should be a hole in that plug, which I take it was to let air our of the inlet side of the pump.
> On a picture of the front housing I think I can see a hole in the top of the pump impeller housing that might perform this function.
> Can anyone comment?
>
> Thanks
>
> Steve Izett
> Perth Western Australia
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