Indirect fired heater modules are used for tempering make up air for installations requiring frequent air changes. The indirect fired gas heated make up air unit is designed to deliver, clean tempered clean air in to any indoor environment. Units are designed for natural and propane gas applications, and for indoor or outdoor installation.

The indirect fired heater module can be intergraded in to an existing application. Packages are available in sizes up to 13,000 CFM and 800,000 BTUH gas input. Standard features include a spark ignited intermittent pilot with timed safety lockout, and a redundant combination valve. Units consist of a galvanized enclosure with a stainless steel burner and heat exchanger.