This proprietary maintenance tool connects directly to the CNM connector on the outdoor unit control board or branch box

As a Genuine Hydrotherm OEM part

including those stamped with 311747

System Longevity: Helps prevent blower motor fatigue by maintaining proper operational cycles based on plenum temperature

while the wrong voltage can damage the internal windings

Spartan Valves V243-12N-EP3.5 Valve Body Els PW 17895 This proprietary maintenance tool connectsThe Spartan Valves V243 12N EP3. 5 Valve Body is a commercial grade 1 2" 2 way globe control valve engineered for precision in terminal unit applications. Constructed from low zinc anti dezincification bronze (Alloy C84400), this valve body is designed to withstand the rigors of hot or chilled water systems and up to 15 PSI of low pressure steam. Featuring a 3. 5 CV rating and standard Female NPT (FNPT) connections, it utilizes a "Mirror maker"