Reznor Reznor® ADFH Series Direct Fired Gas Makeup Air System Model ADFH500

The Reznor® ADF Series units are direct-fired heating/makeup air systems designed for either indoor or outdoor installation. Model ADF systems are available to operate on either natural or propane gas. The ADF Models provide discharge air at a maximum temperature of 120°F (75°F in Canada). Standard electrical controls include a unit-mounted electronic circuit board with diagnostic lights, a motor contactor, and an intermittent hot surface ignition system. Standard gas controls include a gas valve controlled by a unit-mounted discharge air controller (See C.G.A. requirements), main and pilot pressure regulators, a pilot solenoid valve, and main and pilot manual shutoff valves. Safety controls include a flame supervisor with 100% lockout, a low air flow proving switch, a pre-purge time delay, an energy cutoff device, and both automatic and manual temperature limit controls.