Heat exchanger assembly with a first drainage channel and a second drainage channel

Heat exchanger assembly, comprising:

• a heat exchanger plate;
• a first set of tubes and a second set of tubes coupled to the heat exchanger plate;
• a heat shield mounted on the heat exchanger plate, said heat shield configured as a side wall and in combination with the heat exchanger plate defining a turnaround chamber that directs gases from the first set of tubes to the second set of tubes;
• an inducer pan mounted to the heat exchanger plate, said inducer pan comprising a draft inducer mounting section;
• and
• a second gasket disposed between the heat exchanger plate and the inducer pan, wherein the second gasket comprises an elastomeric material.

Heat exchanger assembly, comprising:

• a heat exchanger plate;
• a draft inducer mounted to the heat exchanger plate;
• a heating unit mounted to the heat exchanger plate;
• a control unit configured to control at least one of the draft inducer and the heating unit, said control unit being mounted to a panel;
• an air inlet duct configured to guide ambient air past the control unit to the heating unit, wherein the air inlet duct is partially defined by the panel;
• a thermal insulator assembly defining a substantially enclosed air gap and disposed between the control unit and the heat exchanger plate;
• and
• a third gasket in contact with the thermal insulator assembly and partially defining the air inlet duct.