Unitary U-Tube Heater Layouts; Figure 16: U-Tube Assembly Overview - Roberts Gorden VANTAGE NP CTHN-125 Installation & Operation Manual

8.4 Unitary U-tube Heater Layouts

CTHN-Series heaters (except CTHN-40) are
approved for optional u-tube configurations.
The u-tube may be installed in either a standard
horizontal position, 45° position or in an opposite 45°
position as shown on Page 5, Figure 5 through
Figure 7. When using a u-tube configuration, the
following additional rules must be adhered to:

FIGURE 16: U-tube Assembly Overview

SECTION 8: U
• A minimum of 10' (3 m) on CTHN-60/80, a
minimum of 15' (4.5 m) on CTHN-100/125, and a
minimum of 20' (6 m) on CTHN-150/175/200 is
required between the burner and the u-tube.
• For turbulator installation, See Page 21, Step 8.8.
• The burner must never be operated
in a tilted position.
The heater must be properly supported at all
locations. See Page 10, Figure 12.
L & U-T H I
NITARY INEAR UBE EATER NSTALLATION
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