To optimize combustion in your Propex heater, an onboard air flow sensor measures the volume of air moving through the combustion chamber. This sensor then signals the onboard electronics whether the air volume is within acceptable parameters for optimal combustion. Combustion air flow through the …

One of the key design elements of the Propex heater is that combustion gases are separated from the heated cabin air. This precludes noxious fume infiltration and condensation inside the heated area. Propex designed several safety features into their heater units because vehicle-mounted accessories …

One of the most commonly asked questions here at Propex North America is: which model Propex do I need for my vehicle build? When sizing your Propex there are as many considerations to take into account as there are individual installations: How big is the vehicle space you're trying to heat? How …

Combustion in Propex heaters is initiated by an internal ignitor. When the heater’s logic circuit senses that propane is at the gas jet and ready to ignite, the onboard electronics activate the ignitor. This electricity jumps a small gap between the ignitor electrode and ground, creating a sp …

As with any electrical connection that will be exposed to changing environments, it is important that you use dielectric grease when connecting the thermostat and power harnesses to your Propex circuit board. Dielectric grease is a silicone-based product that will seal out moisture and prevent oxid …

  The Propex HS-series heaters are extremely reliable in real-world conditions; however, we have seen instances where a fault code cannot be cleared by the normal reset process. We believe that the main circuit board gets into a kind of logic loop and becomes unresponsive to input. We usuall …