Roberts Gorden NDUSTRIA NHE Series Installation, Operation & Service Manual page 27

FIGURE 18: Swirler Installation Model: NHE-125, 30' Straight Tube; Swirler Package - 20' (6 m) (p/n 03051511K)
Note: Swirler installation for this model must be complete prior to coupling installation for proper swirler starter tab placement.
Burner Tube
Tube and Reflector Hanger
Swirler
Adapter
Section
Fold swirler tab
over tube as shown
Internal
Coupling Pin
Coupling
Swirler
Adapter
Section
Swirler
Starter
Section
Pivot Point
Swirler
Starter
Section
Swirler
Adapter
Section
Swirler
Starter
Section
SECTION 6: H I
EATER NSTALLATION
Coupling
Tab
Vent Adapter
23