CPC F24H 3/08 (2013.01) [F23D 91/00 (2015.07); F24H 9/06 (2013.01); F24H 9/1854 (2013.01); F23D 2205/00 (2013.01)] | 18 Claims |
1. An air handling unit (AHU) for a heating, ventilation, air conditioning, and refrigeration system, the air handling unit comprising:
a housing containing a combustion section, the housing including a first side having an opening for the combustion section, the combustion section having a first side wall with a first channel and a second side wall with a second channel, the first side wall disposed opposite of the second side wall;
a combustion heater disposed within the housing, the combustion heater including:
an end plate,
heat exchanger tubes extending from the end plate and into the combustion section, and
a tube support supporting the heat exchanger tubes within the combustion section,
the tube support slidably disposed in the first channel and the second channel the tube support includes a retaining member slidably disposed in the first channel and the second channel, wherein
the tube support configured to slidably move through the first channel and the second channel in a first direction that moves the combustion heater through the opening in the housing.
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