Operating Principle; Application And Intended Use - Pitsan ETA Series Installation, Operation & Maintenance Instructions Manual

4

OPERATING PRINCIPLE

COMPONENTS
• LOUVERS: Louvers are discharge air deflectors, either adjustable or nonadjustable, that
change or route the air flow
• HEATING COIL: convert electrical energy to heat by passing electrical current through a
specifically designed resistance wire. Constructed of spiral wound resistance wire, surrounded
by an insulating power , encased in a metal enclosure. Either Monophase or Threephase
types can be provided upon by request.
• FAN (FAN BLADE): is a propeller type device, used to move the air through the unit heater.
Unit heaters discussed in this manual are directly coupled to an electric motor. They are not
belt driven.
• MOTOR:are permanently lubricated electrical devices that rotate the fan to move the heated
air from the heater to the space. When the unit heater wattage is over loaded one or more
CONTACTORS are employed to switch the electrical current to the elements and / or
the motor. Usually a thermostat or fan delay will control when the contactor is energized.
• OVER TEMPERATURE LIMIT: is a normally closed temperature sensing device, located on
or in close proximity to the element, designed into the heater to open f an abnormally hot
condition occurs. Abnormally hot conditions are usually the result of a loss of moving air
across the element. Frequent causes of over temperature limit opening are; blocked inlet or
discharge, motor stoppage and loose fan.

5 APPLICATION AND INTENDED USE

The units are designed for heating air in closed areas. Heaters can be mounted for horizontal
or vertical air flow.
Typical Application Areas:

Factories

Warehouses

Garages

Stores

Power Stations and Aircraft Hangers

Agricultural Barns

Green Houses

Industrial assembly areas

Enclosed outside smoking areas.

Wall type or ceiling mounting bracket for horizontal or vertical air flow or any position
between.
PİTSAN MAK. SAN. VE TİC. LTD ŞTİ, Esenyurt Yolu Üzeri No: 66 - 68 Bağlar Mevkii, TR – 34850 Avcılar - İSTANBUL
Tel.: 0212/4281885, Fax: 0212/4281661, Email:pitsan@pitsan.com,
Operating
Instructions for
Electrical Heater Units
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