SECTION 5: HEATER DESCRIPTIONS 5.1 Unitary vs. Multiburner
Unitary heaters consist of a single burner, a single run of radiant tubing and a single fan assembly. See Page 14, Figure 13 or See Page 17, Figure 16 for details.
Multiburner systems consist of more than one burner and more than one run of radiant tubing. The runs of radiant tubing are connected together by manifold tubing. The manifold tubing connects to a single pump that exhausts the flue gases outdoors. See Page 32, Figure 19 through Page 35, Figure 23 for common multiburner system layouts.
Since this manual addresses installation of both unitary heaters and multiburner systems, pay close attention to section and figure titles to verify relevance to unitary heaters or multiburner systems.
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