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fan in a can with Taco 3 zone sr503-4

crie73
crie73 Member Posts: 1
in Indoor-Air Quality
the fan in a can wants to go between the thermostat and the controller. I have it working for one zone. where wouid I connect it to turn on the outside fan (fan in a can) and the board? thanks!

Comments

  • John Ruhnke
    John Ruhnke Member Posts: 939
    The fan should turn on when the burner turns on only. You don't want the fan running when the burner is off. That just pulls energy out of the boiler and sends it up the chimney.

    That fan in the can should connect directly to the burner circuit.
    I am the walking Deadman
    Hydronics Designer
    Hydronics is the most comfortable and energy efficient HVAC system.
  • John Ruhnke
    John Ruhnke Member Posts: 939
    The whole purpose of a fan in the can is to provide fresh air to the burner when it runs. I am confused. Why would you use it for one zone only?
    I am the walking Deadman
    Hydronics Designer
    Hydronics is the most comfortable and energy efficient HVAC system.
  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
    edited September 2019
    crie73 said:

    the fan in a can wants to go between the thermostat and the controller...

    Why?

    What type of equipment, gas or oil? The manufacturer has an easy wiring diagram for either.
    Like John said, it's wired in as and intended to be a safety. No fan proving, no burner firing.

    There was an error rendering this rich post.

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