the 1178203 heater is energized only when the compressor is not running

specifically engineered for the MSZ-GL24NA-U1 and the newer MSZ-GS30NA-U1 and MSZ-GS36NA-U1 models

this model is designed specifically for 1 Heat / 1 Cool stage systems

The 082H5006 actuator supports both 0(2)-10 V and 0(4)-20 mA control signals

Armstrong Fluid Technology 174034MF-013 Pump 324846-701 the 1178203 heater is energizedThe Armstrong Fluid Technology 174034MF 013 Pump is a high performance Series H circulator pump engineered for peak efficiency in hydronic heating systems. Featuring a robust 1 6 HP motor and 115V single phase operation, this cast iron circulator pump is built with a resilient mounted motor to minimize noise and vibration. The advanced maintenance free design utilizes permanently lubricated ball bearings, eliminating the need for periodic oiling and