Indirect HW shut off

[Rockycmt]

In the summer months I normally turn off my furnace (HW Gas) when away on weekends of vacation..., To save the gas on heating the Indirect HW. In winter months I lower my thermostats to 55 but I still an generating HW on my third zone. Can I put a switch on my aquastat to disable the circuit to the zone Valve if I am away for a long length of time. No sense heating the water if no one is using it. If so, what kind of switch?

Any comments?

 

[CHH]

Any single pole switch rated for at least 24 VAC should be fine. I'd probably just use a simple light switch.