HS4 Power Venter w/ UC1 Control

HS4 Power Venter w/ UC1 Control The Tjernlund Power Venter models HS3, HS4 and HS5 are designed to Side Wall or Vertically vent Natural and LP Gas appliances. After each burner cycle the Venter will continue to operate in post-purge mode to purge the heater and vent of residual flue gases.  A factory post-purge time is set at 2 minutes and is adjustable up 16 minutes.  The Venter features a safety system consisting of the integral UC1 Universal Control and a Fan Proving Switch.  These devices monitor the Venter's performance and will interrupt the main burner if a venting malfunction is detected.