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CTH3-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
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FIGURE 18: U-Tube Heater Layout Overview
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
*Requires the last reflector
before the u-tube to be cut
in half for use on both sides.
**Requires the last tube before
the u-tube to be cut in half for
use on both sides.
U-tube
Burner
Reflector
Tube 10' (3 m)
Tube/Reflector
Hanger
Coupling
Assembly
c
b
de
e
g
60' (18 m) Tube Length
c
b
de
g
h
40' (12 m) Tube Length
c
b
de
f
g
h
50' (15 m) Tube Length* **
g
c
b
20' (6 m) Tube Length*
h
e
Tube 5' (1.5 m)**
c
b
d
f
g
h
30' (9 m) Tube Length**
c
b
de
e
f
g
h
70' (21 m) Tube Length**
c
b
de
e
g
h
80' (24 m) Tube Length
e
h