Thomas & Betts FE Benutzerhandbuch

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Mfg P/N 98807 Rev 8, Page 21
28. Optional Polytube Adapter - Options CD6, CD8, and CD11
(Blower Models only)
Figure 17 - Polytube Adapter
The polytube adapter option package does not include polytubing.
Polytubing can be obtained from a supply distributor such as FOF
Products, Inc., P. O. Box E, 1505 Racine Street, Delevan, WI
53115; ACME Engineering Co., P.O. Box 978, Muskogee, OK
74402; or any local greenhouse supply distributor. Some local
code authorities require the polytube material to be a listed mate-
rial. Consult code authority having jurisdiction and the polytube
supplier to determine the appropriate polytube material and rec-
ommended methods of suspension.
WARNINGS: This adapter is to be used
only on units equipped with a blower. At
no time should the free area in the polytube
be less than the listed minimum. Failure to
comply with these warnings could result
in severe personal injury, death and/or
property damage.
The following chart shows specification information covering the use of polytubes with these blower-type unit heaters.
Illustration shows Option
CD8, Polytube Adapter
for Floor-Mounted
Heater. Options CD6 and
CD11 are for Suspended
Heaters.
The polytube adapter option is designed to adapt this blower-
type heater for use with polytube ductwork.  The use of
polytubes for air distribution is common in greenhouse appli-
cations and some industrial applications. A polytube distribu-
tion system delivers warm air to a specific area, reducing the
need for complete area heating. The polytube adapter is avail-
able in three installation designs making it adaptable to many
applications and building structures.
Conversion Table (Diameter to Area)
Diameter of the Hole
Area of the Hole
(inches)
(sq in)
2-1/2
4.91
2-1/4
3.98
2
3.14
1-7/8
2.76
1-1/2
1.76
1
0.785
CFM  at  Poly tube  M inimum Free 
Sugges ted Hole Sizes  and Locations
Siz e
.25" Diameter Area 
(square 
Length of Polytube
ESP
(inches)
Inches)
50 Ft
75 Ft
100 Ft
125 Ft
150 Ft
Number
37p airs
75 p airs
75 p airs
75
925
18
110
Diameter
1-1/2"
1"
1"
Sp acing
16"
12"
16"
Number
50 p airs 50 p airs 100 p airs
94 p airs
100
1235
18
145
Diameter
1-1/2"
1-1/2"
1"
1"
Sp acing
12"
18"
12"
16"
Number
40  p airs 60  p airs
60  p airs
125  p airs
125
1540
18
185
Diameter
1-7/8"
1-1/2"
1-1/2"
1"
Sp acing
15"
15"
20"
12"
Number
40  p airs 60  p airs
60  p airs
125  p airs
130
1600
24
190
Diameter
1-7/8"
1-1/2"
1-1/2"
1"
Sp acing
15"
15"
20"
12"
Number
50  p airs 50  p airs
75  p airs
75  p airs
75  p airs
165
2035
24
240
Diameter
1-7/8"
1-7/8"
1-1/2"
1-1/2"
1-1/2"
Sp acing
12"
18"
16"
20"
24"
Number
42  p airs 42  p airs
60  p airs
60  p airs
100  p airs
200
2465
24
300
Diameter
2-1/4"
2-1/4"
1-7/8"
1-7/8"
1-1/2"
Sp acing
14"
21"
20"
25"
18"
Number
40  p airs 60  p airs
60  p airs
60  p airs
60  p airs
250
3085
24
360
Diameter
2-1/2"
2"
2"
2"
2"
Sp acing
15"
15"
20"
25"
30"
Number
75  p airs 75  p airs
75  p airs
75  p airs
75  p airs
300
3700
24
425
Diameter
2"
2"
2"
2"
2"
Sp acing
9"
12"
16"
20"
24"
Number
60 p airs 60 p airs
60 p airs
100 p airs 100 p airs
400
4935
24
550
Diameter
2-1/2"
2-1/2"
2-1/2"
1-7/8"
1-7/8"
Sp acing
10"
15"
20"
15"
18"
Holes