Lochinvar & A.O. Smith 100208625 Wire Harness 322838-753 The MARS 39004 is a

The MARS 39004 is a professional-grade 390 Series SPDT Changeover Switch designed for automatic seasonal transition in hydronic heating and cooling systems

this unit offers the versatility required for residential

Its wide operating temperature range of -40°F to 150°F ensures consistent automation control in demanding plant conditions

it integrates easily into existing manifolds

Using genuine Johnson Controls parts ensures that your HVAC pneumatic controls maintain their original design specifications and pressure response

Lochinvar & A.O. Smith 100208625 Wire Harness 322838-753 The MARS 39004 is aThe Lochinvar & A. O. Smith 100208625 Wire Harness is a critical OEM component for maintaining the electrical integrity and communication between high efficiency condensing boiler controls and peripheral devices. Built as a direct replacement motor wiring harness, this assembly ensures consistent signal transmission for Lochinvar Knight and A. O. Smith residential boilers. This multi pin connector harness is engineered to withstand the thermal stress