Heating apparatus for a fluid conveying line

A fluid line heating apparatus for heating a fluid conveyed in a fluid line, the apparatus comprising:

• a burner for combusting a fuel to generate heated exhaust;
• an exhaust chamber in communication with the burner so as to be arranged to receive the heated exhaust;
• a heat exchanger tank in heat exchanging relationship with the exhaust chamber and arranged to contain a heat exchanger liquid therein;
• a fluid conduit arranged for connection in line with the fluid line to receive the fluid from the fluid line passed through the fluid conduit, the fluid conduit being received within the heat exchanger tank in heat exchanging relationship with the heat exchanger liquid therein;
• and
• a combustion air intake duct extending downwardly alongside a first end of the heat exchanger tank from an intake opening receiving air therein to an outlet opening in communication with the burner for delivering the air to the burner for combustion of the fuel.

A fluid line heating apparatus for heating a fluid conveyed in a fluid line, the apparatus comprising:

• a burner for combusting a fuel to generate heated exhaust;
• an exhaust chamber in communication with the burner so as to be arranged to receive the heated exhaust;
• a heat exchanger tank in heat exchanging relationship with the exhaust chamber and arranged to contain a heat exchanger liquid therein;
• a fluid conduit arranged for connection in line with the fluid line to receive the fluid from the fluid line passed through the fluid conduit, the fluid conduit being received within the heat exchanger tank in heat exchanging relationship with the heat exchanger liquid therein;
• at least one heat exchanger conduit extending across the exhaust chamber between a first end and a second end of the heat exchanger conduit;
• and
• an access duct communicating through a portion of the heat exchanger tank between a first end of the access duct in open communication with the exhaust chamber adjacent to said at least one heat exchanger conduit and a second end of the access duct located externally of the heat exchanger tank.