TPI G1G2605CA1 Downflow Unit Heater – 5KW, 277V, 2600 Series

Specifications

The contractor shall furnish and install the 2600 Series electric vertical discharge unit heaters of the size, capacity and voltage specified. Heaters shall be installed according to the
manufacturer’s recommendations and applicable national and local codes.

Elements

Elements shall consist of Nickel Chromium alloy resistance wire embedded and completely surrounded in Magnesium Oxide, enclosed and swagged into corrosion resistant sheaths. Corrosion
resistant steel fins shall be permanently attached to the sheaths to provide maximum heat transfer to the
air stream.

Motors

Motors shall be single phase, resilient mounted, totally enclosed, industrial rated with an automatic reset thermal overload protective device. Motors on heaters up to 20 KW capacity shall be
permanently lubricated shaded pole type. Over 20 KW, motors shall be permanent split capacitor type.
Motors shall be mounted out of the main air stream in such a manner as to allow ambient air to be drawn
over the motor to reduce motor temperature. Motor shall be separately removable from beneath the heater
without removing the entire heater from mounting bracket

Fan Blades

Fan blades shall be heavy-duty individually balanced axial flow type. Fan speed shall not exceed 1570 RPM.

Thermal Overload Protection

All heaters shall be equipped with a manual reset thermal cutout which disconnects elements and motor in the event normal operating temperatures are exceeded

Wiring

Heaters shall be designed for a single supply circuit with elements, motor and control circuits subdivided and fused to conform with the latest National Electric Code and OSHA requirements. All three
phase heaters shall have balanced phases

Controls

Heaters shall be controlled by a low voltage wall mounted thermostat. All heaters 25 KW and larger shall be wired for 2 stage operation. 5 KW through 20 KW units are single stage. All heaters
shall be equipped with a fan safety device that causes fan to operate after elements are de-energized to
purge unit of residual heat.