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BLOWER EXHAUST DIRECTION
The blower assembly may be rotated 90 degree clockwise
or counterclockwise to allow horizontal venting in areas
having restricted space above the water heater. To rotate
the blower outlet, remove the four nuts (with 11/32" nut
driver) (see Figure 40), securing the flue collector to the
blower housing. Pull the blower assembly forward to free
it from the mounting studs. Rotate the blower housing
clockwise or counter-clockwise and align the four holes
and screws together. Reattach the blower housing to the
flue collector.
Note: Coupling to vent system
not shown for clarity.
Figure 40.
VENT PIPE PREPARATION
1. INITIAL PREPARATION
•
Make sure the solvent cement you are planning to
use is designed for the specific application you are
attempting.
•
Know the physical and chemical characteristics and
limitations of the PVC and CPVC piping materials
that you are about to use.
•
Know the reputation of your manufacturer and their
products.
•
Know your own qualifications or those of your
contractor. The solvent welding technique of joining
PVC and CPVC pipe is a specialized skill just as any
other pipe fitting technique.
•
Closely supervise the installation and inspect the
finished job before start-up.
•
Contact the manufacturer, supplier, or competent
consulting agency if you have any questions about
the application or installation of PVC and CPVC
pipe.
•
Take the time and effort to do a professional job.
Shortcuts will only cause you problems and delays
in start-up. By far, the majority of failures in PVC
and CPVC systems are the result of shortcuts and/
or improper joining techniques.
34
11/32" nut
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2. SELECTION OF MATERIALS (PCV and CPVC
VENTING)
•
Cutting Device - Saw or Pipe Cutter
•
Deburring Tool, Knife, File, or Beveling Machine (2"
and above)
•
Brush - Pure Bristle
•
Rag - Cotton (Not Synthetic)
•
Primer and Cleaner
•
Solvent Cement - PVC for PVC Components and
CPVC for CPVC Components only
•
Containers - Metal or Glass to hold Primer and
Cement. Select the type of PVC or CPVC materials
to be used on the basis of their application with
respect to chemical resistance, pressure rating,
temperature characteristics, etc.
•
Insertion Tool - Helpful for larger diameter pipe and
fittings 6" and above.
Primer:
It is recommended that Tetrahydrofuran (THF) be
used to prepare the surfaces of pipe and fittings for
solvent welding. Do not use water, rags, gasoline
or any other substitutes for cleaning PVC or CPVC
surfaces. A chemical cleaner such as MEK may
be used.
• Primers and cements are
extremely flammable, and must
not be stored or used near heat
or open flame.
• Also, use only in a well venti-
lated area.
Cement:
The cement should be a bodied cement of
approximately 500 to 1600 centipoise viscosity
containing 10-20% (by weight) virgin PVC material
solvated with Tetrahydrofuran (THF). Small
quantities of Dimethyl Formamide (DMF) may
be included to act as a retarding agent to extend
curing time. Select the proper cement; Schedule
40 cement should be used for Schedule 40 pipe.
Never use all-purpose cements, commercial glues
and adhesives or ABS cement to join PVC or
CPVC pipe and fittings. To join PVC and CPVC
materials, use ATSM F-493 compliant cement.
WARNING
Fire Hazard
100221773_2000189439_Rev. 01
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