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NMD Innovation

HVAC Service Control Wiring Training Test Stand

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To further the HVAC service abilities of our staff, we have constructed a test stand for training in control wiring.  We have thermostats, zone panels, zone valves, relays, contactors, and terminal blocks mounted on a plywood board which we can use to simulate a live system.  This permits our team members to study how controls affect the operation of heating, cooling, and…

NMD embraces the “propress” method

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We have embraced the ProPress copper joining method that has swept the globe – so far, over a billion copper ProPress fittings have been installed.  Instead of using a torch to solder or braze connections between copper fittings and pipe, we use a cordless press tool that squeezes the copper fitting firmly onto the pipe.  Leakfree due to an internal o-ring, these…

HVAC Service Heat Pump Training Test Stand

To further the HVAC service abilities of our staff, we have constructed a test stand with one outside heat pump and two inside wall mounted mini-splits.  Fully wired, charged, and operational, it serves as a live system so our team members can study the refrigerant cycle, control wiring, superheat and subcool calculations, and pressure and temperature readings.