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

Page: 31 / 78

SECTION 6: H
EATER
I
NSTALLATION
27
FIGURE 24: Swirler Installation Model: NHE-175, 50’ Uneven U-Tube; Swirler Package - 15' (4.5 m) (p/n 03051510K)
See Page 31 for U-Tube installation instructions.
Burner T
u
be
10’
(3 m)
Tube
10’
(3 m)
Tube
C
oupling
In
te
rnal
C
oupling P
in
Fold swirler tab o
v
er tube as sho
wn
Ta
b
S
wirler
Star
te
r
S
ec
tion
C
oupling
Ve
n
t A
d
a
p
te
r
S
wirler
Star
te
r
S
ec
tion
S
wirler
Ad
a
p
te
r
S
ec
tion
P
iv
ot P
oint
10’
(3 m)
Tube
S
wirler
Ad
a
p
te
r
S
ec
tion
S
wirler
Star
te
r
S
ec
tion
U-tube
Note:
S
wirler installation f
or
this model must be c
omplet
e
prior t
o c
oupling installation
for pr
oper swirler star
ter tab
plac
ement.