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CTHN-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
18
FIGURE 17: Unitary U-tube Layout Overviews
c
b
d
f
c
b
de
c
b
de
f
c
b
de
e
c
b
de
e
f
LEGEND
a = 14" (36 cm)
reflector width (not shown)
b = 2" (5 cm)
end cap to burner
c = 2" (5 cm)
end cap to hanger
d = 7'6" (229 cm)
distance first hanger
e = 10' (305 cm)
distance between hangers
f = 5' (153 cm)
distance between last full tube
hanger and half tube hanger
g = 17.5" (44 cm) burner length
h = 9.5" (24 cm) burner height
*20' (6 m) & 50' (15 m) tube length
heaters require the last reflector
before the u-tube to be cut in
half for use on both sides.
U-tube
Burner
Reflector
Tube
Tube/Reflector
Hanger
Coupling Assembly
Fan Assembly
(not shown)
c
b
de
e e
c
b
e
g
h
g
h
g
h
g
h
g
h
g
h
g
h
20' (6 m)*
Tube Length
30' (9 m)
Tube Length
40' (12 m)
Tube Length
50' (15 m)*
Tube Length
60' (18 m)
Tube Length
70' (21 m)
Tube Length
80' (24 m)
Tube Length