Form RZ-NA-I-TR, Page 22
20. Combustion Air Inlet Kit,
Option DE2
Combustion air can either come from the heated space or be piped
from the outside. Combustion air should be piped from the outside
if (1) the pressure in the building is negative, (2) the atmosphere is
dirt laden, (3) the atmosphere contains any substance that will
cause toxic gas when passed through a flame, or (4) the heater is
installed in a tightly closed room that does not provide required air
for combustion. If outside combustion air is required, the optional
Optional Equipment -- Field Installed
This section includes a brief description of most field-installed options. Field-installed option kits include illustrated instructions.
3) Do not install a 5-ft heat exchanger tube in place of a 10-ft tail
pipe. A 10-ft tail pipe is required in all configurations.
4) On a "U" configuration, the straight tube length on the burner
side of the "U" must be equal to or longer than the tube length on
the exhaust side.
5) Adjust both the overall dimension and the suspension point
dimensions shown in the configuration drawing when using a 5-ft
heat exchanger tube. Reduce or increase appropriate dimensions
by 5 feet. (5-ft heat exchanger tubes require a suspension point.)
18. Hanger Kit, Option CK11
This option kit includes 50' of chain with a 200 lb working capacity
and 18 "S" hooks. Minimum chain, "S" hooks, and/or turnbuckle
length between the tubes and the building suspension points is 12".
If turnbuckles are included in heater suspension, use either op-
tional turnbuckles (Paragraph 18) or field-supplied turnbuckles of
steel or malleable iron.
IMPORTANT: Chain in Option CK11 has links consisting of
two loops. When cutting 50' chain to required lengths, be certain to
remove both loops of the "cut" link.
19. Turnbuckle Kit, Options
CK12-18
Tubular infrared heaters must be level. For ease in leveling the
system, the use of turnbuckles is recommended. The optional turn-
buckle kit provides a turnbuckle as illustrated in Figure 25 to attach
to the "S" hook at each heater hanger bracket.
Figure 25 - Turnbuckle in Optional
Turnbuckle Kits
Right
hand
thread
Left hand thread
Add nut to lock turnbuckle.
Turnbuckle assembly
rated for at least a 200 lb
working load.
17. Optional Heat Exchanger Tubes
Optional heat exchanger tubes in "U" shape (Option UB3) and "L" shape
(Option UC2), and 5-ft straight length (Option UA1) are used to change the
configuration of the tubular system. With these optional tubes, the system can
be custom-designed to suit the application. All approved configuration layouts
are illustrated or noted in the Suspension Dimensions and Configuration Draw-
ing booklet provided with each heater.
The "L" tube Option Package includes an "L" shaped heat exchanger tube,
tube connection hardware, components to field-assemble an L-shaped reflec-
tor, and an illustrated instruction sheet. Tube connection is the same as for
straight tubes; see Paragraph 9, Figure 11.
The "U" tube Option Package includes a "U" shaped heat exchanger tube,
connection hardware, components to field-assemble a "U" shaped reflector,
and an illustrated instruction sheet. Tube connection is the same as for straight
tubes; see Paragraph 9, Figure 11.
The 5-foot Heat Exchanger Option Package includes a 5-ft tube, tube
connection hardware, a 5-ft reflector, and two reflector brackets. Tube suspen-
sion and installation instructions are the same as for a 10-ft heat exchanger
tube. See Paragraphs 7, 9 and 10. The configuration must meet the guidelines
listed below.
If
ALL of the following conditions are met, the configuration may be custom-
ized by replacing any 10-ft heat exchanger tube(s) with one or two 5-ft heat
exchanger tubes.
1) Do not deviate from the specified minimum or maximum length of straight
tubes for the size of heater being installed.
2A) Sizes 100, 125, and 150 -- DO NOT replace the first 10-ft heat ex-
changer tube with a 5-ft tube. Sizes 100, 125, and 150 require a minimum
of 20 feet of straight tube length before an "L" or "U" shape is installed.
2B) Sizes 175 and 200 - DO NOT replace either the first or second 10-ft
heat exchanger tube with a 5-ft tube. Sizes 175 and 200 require a minimum
of 30 feet of straight tube length before an "L" or "U" shaped tube is installed.
BTUH Size (000)
Minimum
Length
Maximum
Length
Alternate Allowable
Overall Lengths
50 20 feet 30 feet 25 feet
75 20 feet 40 feet 25 or 30 feet
100 30 feet 50 feet 35 or 45 feet
125 40 feet 50 feet 45 feet
150 50 feet 60 feet 55 feet
175 50 feet 70 feet 55, 60, or 65 feet
200 50 feet 70 feet 55, 60, or 65 feet
2' 9' 7-1/2"
9' 8"
9' 8"
Burner Box
Combustion
Chamber
Tube
10' Heat
Exchanger
Tube
DO NOT replace either
with a 5' tube
10' Heat
Exchanger
Tube
"L"
or "U" Heat
Exchanger
Tube
2'
9' 7-1/2"
9' 8"
Burner
Box
Combustion
Chamber
Tube
10' Heat
Exchanger Tube
-- DO NOT
replace with
a 5' tube
"L"
or "U" Heat
Exchanger
Tube
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