Wirsbo / Uponor ES switching "totally isolated"

[Tom Robinson]

I'm working with Wirsbo / Uponor zone control module that has a solid state switching output "ES"
stated to be totally isolated. Although I see 5 millivolts between leads.

The new Weil-McLain high efficiency boiler requires "dry contact" signal , they certainly don't want 24V. what about 5 millivolts?

do I need to add relay or not ?

Both manufactures pass the buck to the other and are not helpful.

 

[Fitter30]

Want model is the control

 

[Sponsor]

 

[Tom Robinson]

I'm working with Wirsbo / Uponor zone control module that has a solid state switching output "ES"
stated to be totally isolated. Although I see 5 millivolts between leads.

The new Weil-McLain high efficiency boiler requires "dry contact" signal , they certainly don't want 24V. what about 5 millivolts?

do I need to add relay or not ?

Both manufactures pass the buck to the other and are not helpful.

Want model is the control

Ultra High Efficiency 80

 

[Fitter30]

W/S control model A3031003 es is a dry contact max 2 amp fused small 24vac relay. Page 78 of the install manual
https://www.supplyhouse.com/White-R...PgMXcGKikIa5W1NOfybt8MGxApYnNRmQaAoygEALw_wcB