Gas Fired Propeller Unit Heaters
For International clients
1 KCal = 3.968 BTU
SEP 60-400 Gas Fired Propeller Unit Heaters
(Now available in Stainless or Aluminized Steel)
Features / Benefits
- EFFICIENCY - The HED series gas-fired duct furnaces
deliver 80% thermal efficiency using natural gas or LPG. This excellent
efficiency sets a new standard when using gas-fired duct furnaces.
- RELIABILITY - The design of this duct furnace has
proven itself to be superior during seven years and hundreds of thousands
of hours in the toughest winter climates of North America and under
extreme conditions in laboratory life cycle testing. HED gas fired heaters have been
designed to provide a long, trouble free service life.
- QUALITY - Every heater undergoes continuous quality
checks at all stages of manufacturing. After assembly, each heater is
test fired and functionally tested to provide final assurance that it
is performing in accordance with ADP's rigorous quality .
- APPROVALS - The rating plate of each heater carries
the mark signifying that the HED heater is design certified by CSA.
In addition, the heater series is listed by the California Energy Commission
- POWER EXHAUST - All heaters have a sealed flue collector
and a power exhaust system which enable conventional vertical venting
or horizontal venting up to 40 feet. Power exhaust, when used with horizontal
venting, lowers operating cost because it reduces stack losses. It also
allows the option of not penetrating the roof, or multiple floors. The
versatile HED series power exhaust reduces installation cost further
by allowing the exhaust to be directed upward, left or right, just by
rotating the exhaust assebly (available on sizes 75-150 only). An additional
benefit is reduction of clearance to combustibles on top of the unit.
- TUBULAR HEAT EXCHANGERS - Constructed of aluminized
steel for superior resistance to corrosion and oxidation. Additional
protection is available with an optional stainless steel heat exchanger.
The curving "design provides for complete exposure of the heating
surface to the supply air stream. Rounded surfaces minimize air resistance
and permit air to surround all heat transfer surfaces for excellent
heat transfer. The compact design of the heat exchanger minimizes cubic
space requirements for the heater cabinet. Tubular design means lighter
weight and significantly longer service life due to lower thermal-induced
stresses. Further, the tubular exchangers create less resistance to
air flowing through the unit. This results in lower air handler horsepower
requirements, reducing system operating costs in every season.
- INSHOT BURNERS - These lightweight steel burners
are maintenance-free and never require adjustment or cleaning. The efficient
combustion. The entire burner assembly is removable as one piece for
ease of service.
- DIRECT SPARK IGNITION - In combination with the 24-volt
main gas valve with 100% shutoff for safety, the direct spark ignition
control provides positive, reliable and safe main burner ignition. This
eliminates the need for a pilot light, improving system efficiency and
reliability. A separate flame sensor provides proof of main burner ignition.
If loss of main burner flame should occur, the control will reinitiate
ignition three times before locking out, thus reducing nuisance service
calls. The prepurge operation safely removes all gas and flue products
from the system prior to ignition.
- CABINET - Constructed on 18- to 22-gauge cold-rolled
steel, each cabinet has a baked-on powder paint finish for superior
resistance to corrosive elements. Each cabinet has a two point (3/8"
x 16" spotnut) suspension system for easy installation. The three
largest models have four-point suspensions. Generous use of inside cabinet
insulation keeps the outer surface temperature low. The wiring junction
box is conveniently located on the side of the cabinet for easy access
and adequate protection.
- WARRANTY - All components have a limited warranty
for two full years. The heat exchangers have a limited warranty for
one year. Consult the warranty certificate for details.