IsoTherm is a ready-to-mount, compact central unit for installation on the right or left side of the manifold via a 1-inch male thread. A three-way mixing valve allows for automatic temperature regulation to the PEX loops, or actuators may be placed at each desired loop of the manifold. Temperature limiter protects sensitive areas or wood floors from overheating. This product is essential for remote manifolds requiring 30,000 to 50,000 Btus.