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Heat-Circulation
The Heat Exchanger
The Air Inlet/Outlet Grilles
NOTE: Air inlet/outlet grilles should never be covered
or blocked off. The heat-circulation system is also used
as replace cooling system for safe operation.
Outside Combustion Air:
Primary Air Control:
Glass Doors
Forced Air Circulation:
NOTE: Vermont Castings Group Forced Air Systems
are designed to distribute heat at a specic cfm rate.
Any attempt to increase air movement through the heat
exchanger will decrease the heat transfer time which
will result in cooler heat circulation temperatures.