Thermal Actuator, Four-Wire A3023522 For Uponor (Wirsbo) Manifold.

The VA33 spacer ring A3019900 is required for adapting A3023522 to older style Wirsbo Brass Manifolds.

The Uponor Thermal Actuator is a slow-opening thermal actuator that provides individual loop flow control on a multi-zoned manifold and features an end switch for activation of relay (pump), heat plant or other auxiliary devices.

Uponor's new Thermal Actuator, four-wire features a new design with lower power consumption (1 watt) and includes three adapter rings for compatibility with all of Uponor's radiant manifolds, including:

Engineered Polymer (EP) Heating Manifold

Stainless-steel Manifold

TruFLOW Jr. Manifold

TruFLOW Classic Manifold