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3.23. PVC Venting Option (D-32)
Venting of the XTherm with PVC material requires the
factory-installed D-32 adapter kit as well as a manual
reset high limit with max setting 200°F (93°C). The PVC
vent adapter is shown in Figure 42. This option is not
available for field installation.
CAUTION: The inlet water temperature to the XTherm
A
must not exceed 170°F (77°C) at any firing rate to use the
PVC venting option. The venting system must conform to
local codes and/or the current National Fuel Gas Code
ANSI Z223.1/NFPA 54. The system setpoint must not
exceed 180°F (82°C).
Cleaning
Prior to installing the PVC pipe and fittings, ensure that all
burrs and/or ridges have been removed. Failure to remove
burrs or ridges will result in the cement in the fitting socket
being scraped from the socket surface, producing a dry
joint with a high probability of joint failure. Remove all
burrs with a knife, or with abrasive paper.
Surfaces to be joined must be cleaned and be free of dirt,
moisture, oil, and other foreign materials.
DANGER: Primer, cleaner, and cements are extremely
A
flammable. They are harmful or fatal if swallowed. The
vapors are harmful. They may irritate eyes and skin and
can be absorbed through the skin. Read and observe all
safety information printed on primer, cleaner, and cement
containers.
Termination
Termination should be accomplished using the adapter
thimble as shown. The adapter thimble is supplied by
Raypak as part of the D-32 option.
PVC vent assembly instructions
1. Cut pipe ends squarely, removing all burrs and dirt.
2. Dry fit pipe and fittings to be connected for proper fit.
3. Clean pipe and fitting with a cleaner.
4. Apply a coat of primer to pipe and fitting.
5. Apply a thin coat of cement to fitting, avoiding
puddling inside.
6. Apply a liberal coat of cement to pipe leaving no
voids.
7. QUICKLY assemble parts while cement is fluid! If you
wait too long, re-coat pipes.
8. Push pipe completely into socket of fitting, rotating
1/4 turn to achieve proper orientation until it bottoms
out.
9. Hold pipe and fitting together for 30 seconds, then
carefully clean off excess with a cloth. The glue
bonds by melting the PVC and they will re-harden
during curing.
PRECAUTIONS: Always store primers, cleaner, and
cements in cool, dry, well ventilated places. Do not store
them near heat, sparks, or flames. Keep containers closed.
Use them in well ventilated areas. Wear impervious
clothing while handling. Do not smoke, eat, or drink while
handling. Wash thoroughly after handling and before
eating. Wear eye protection when handling. If swallowed,
drink water, do not induce vomiting, and call a physician
or poison control center immediately. If inhaled, get fresh
air and seek medical attention if ill feelings persist. In
case of eye and/or skin contact, immediately flush with
plenty of water for 15 minutes and seek medical attention
if irritation persists.
All Primers, cleaners, and cements must meet all local
codes.
•
Before using primers, cleaners, and cements, stir or
shake, making sure contents are liquid. Do not use if
found to be lumpy or jelly-like.
•
Restoration of the original viscosity or removal
of gelation by adding solvents or thinners is not
recommended.
•
Primers and/or cement should be NSF and/or UPC
listed.
NOTE: Cleaners and primers are intended for different
functions and should not be considered interchangeable.
Verify with vent material manufacturer for specific
requirements.
DO NOT insulate PVC or CPVC vent pipe.
F10442
FLOOR DRAIN
1/4" (6.35 mm)
OR SUMP PUMP
DROP PER FT
Figure 43. Visual Guide for Condensate Piping
FLUE VENT
TEST PORT
PVC PIPE
CONDENSATE
TREATMENT KIT
37
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