Reznor B Option - Installation - Polytube Adapter Instructions - Floor Mount - Manual (Page 4)

INSTALLATION INSTRUCTIONS (cont'd)
7. Install Polytube (See Figure 9)
The polytube adapter is now completed and ready for the field-supplied poly-
tube. Slip the end of the polytube over the collar under the tightening band. Be
sure that the air delivery holes are pointed in the proper direction. Fasten the
band over the polytube by tightening the adjusting screw.
Polytubes are normally supplied as a tube which is open at both ends. The end
opposite the heater must be closed to permit the tube to inflate.
For greenhouse floor-mounted installations, the polytube is usually allowed to
rest on the floor underneath the grow tables.
8. Attach Label
For future reference, attach the "Polytube Holes Location" label on the side
panel of the adapter. (See recommended location in the Dimension Drawing on
page 1.) Wipe the surface of the panel with a clean dry cloth. Remove the
backing from the label and adhere it to the adapter.
9. Installation Checks
When the installation is completed, the motor load and discharge air temperature
should be checked. Consult the installation manual supplied with the heater for
information on checking motor load and how to make blower speed adjust-
ments.
Use a temperature measuring device to check the discharge air temperature.
Discharge
Panel
Band with
Adjusting
Screw
Polytube
Ductwork
Figure 9 - Attach Discharge
Panel and Polytube Ductwork
Check the air temperature at a location in the tube, six to eight
feet way from the heater. A temperature rise range of 55° to
65° F is recommended. Following the instructions in the heater
manual, adjust the speed of the blower to achieve the desired
range while maintaining motor current draw below the full load
amperes shown on the motor rating plate.
POLYTUBE SELECTION - Polytube selection is the responsibility of the installer. Different grades, hole positions, hole sizes, and lengths are
available. Some local code authorities require that polytube material be a listed material. Consult code authority having jurisdiction and polytube
supplier to determine the appropriate polytube material and recommended methods of suspension. Polytubing can be obtained from a supply
distributor such as FOF Products, Inc., P. O. Box E, 1505 Racine Street, Delavan,WI 53005; Acme Engineering company, P. O Box 978, Muskogee,
OK 74402; or any local greenhouse supply distributor.
The total open or free area of the polytube is important. Polytube suppliers have a great deal of flexibility in placement and sizing of holes. Too small
of a free area will cause overheating. Excessive open area may not permit the tube to inflate. See the table below for a guide in hole size and location.
Spacing and hole size may be varied, but free area must not be less than shown for your heater size.
Conversion Table
(Diameter to Area)
Diameter Area
of the Hole of the Hole
(inches) (square inches)
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
WARNING: Optional
polytube adapters are 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
this warning could result
in severe personal injury,
death, and/or property
damage.
CFM at Polytube M inimum Free Suggested Hole Sizes and Locations
Size .25" Diameter Area (square Length of Polytube
ESP (inches) Inches) 50 Ft 75 Ft 100 Ft 125 Ft 150 Ft
Number 37p airs 75 pairs 75 pairs
75 925 18 110 Diameter 1-1/2" 1" 1"
Sp acing 16" 12" 16"
Number 50 p airs 50 pairs 100 pairs 94 pairs
100 1235 18 145 Diameter 1-1/2" 1-1/2" 1" 1"
Sp acing 12" 18" 12" 16"
Number 40 p airs 60 pairs 60 pairs 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 pairs 60 pairs 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 pairs 75 pairs 75 pairs 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 pairs 60 pairs 60 pairs 100 pairs
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 pairs 60 pairs 60 pairs 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 pairs 75 pairs 75 pairs 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 pairs 60 pairs 100 p airs 100 pairs
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
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