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SECTION 7: OPTIONAL HEATER
ACCESSORIES
Warning
Cut/Pinch Hazard
Wear protective gear during installation, operation,
and service.
Edges are sharp.
Failure to follow these instructions can result in
injury.
7.1 U-Tube Configuration
Heaters are approved for optional U-tube
configurations.
The U-tube may be installed in either a standard
horizontal position, a 45° position, or in an opposite
45° position as shown on page 6. When using a
U-tube configuration, the following additional rules
must be adhered to:
• A minimum of 10 ft (3 m) on IRH 80 and a
minimum of 15 ft (4.5 m) on IRH 125/150/200 is
required between the burner and the U-tube.
• The correct turbulator/swirler must be installed in
the last standard section of the tube.
• The burner must never be operated in a tilted
position.
• The heater must be properly supported at all
locations. See “FIGURE 21: U-Tube Heater Layout
Overview” on page 31.
Summary of Contents for IRH
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