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Uponor Thermal Sealed Actuators: 2 wire vs 4 wire

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cloudd
cloudd Member Posts: 57
in Radiant Heating
Uponor
Stainless-steel Manifold Assembly, 1" with flow meter, B&I, ball valve, 12 loops
PART NO.A2701202

In a new install, why would I pick a 4 wire over a 2 wire thermal sealed actuator? What would determine this?

Comments

  • hot_rod
    hot_rod Member Posts: 27,457
    4 wire means it has an end switch to trigger the boiler or a pump. If you have multiple thermostats you probably want 4 wire.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream

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