Cementing Joints - Rheem RGFG Installation Instructions Manual

CEMENTING JOINTS

Properly seal all joints in the PVC vent
using the following materials and pro-
cedures:
PVC CLEANER-PRIMER AND
PVC MEDIUM-BODY SOLVENT
CEMENT
IMPORTANT: After cutting pipe,
remove all ragged edges and burrs.
This is important to prevent increase
in pressure drop throughout the sys-
EQUI VAL ENT VENTI NG – ASSI GNI NG VENT L ENTGH TO
tem.
1. Cut pipe end square. Chamfer
edge of pipe. Clean fitting socket
and pipe joint area of all dirt,
This section
grease and moisture.
book. Vent tables are pro
2. After checking pipe and socket
number of elbows.
for proper fit, wipe socket and
pipe with cleaner-primer. Apply
for each elbow is subtracted from
a liberal coat of primer to inside
vent pipe (in ft) can still be used.
surface of socket and outside of
pipe. READ INSTRUCTIONS
INCLUDED WITH THE PRIMER
There are se
FOR PROPER INSTALLATION.
drawings below sh ow the dim ensions of comm
3. Apply a thin coat of cement even-
from ASTM 3311, Standa
ly in the socket. Quickly apply a
heavy coat of cement to the pipe
Patterns.
end and insert pipe into fitting
with a slight twisting movement
until it bottoms out.
NOTE: Cement must be fluid; if
not, recoat.
4. Hold the pipe in the fitting for 30
seconds to prevent the tapered
socket from pushing the pipe out
of the fitting.
PIPE & FITTING MATERIAL
Schedule 40 PVC (Pipe)
Schedule 40 PVC (Cellular Core Pipe)
Schedule 40 PVC (Fittings)
SDR-21PVC (Pipe)
SDR-26 PVC (Pipe)
Schedule 40 ABS Cellular Core DWV (Pipe)
Schedule 40 ABS (Pipe) A long swee
pipe for either 2 or 3 inch
Schedule 40 ABS (Fittings)
pipe. This eq
ABS-DWV (Drain Waste & Vent)
(Pipe & Fittings)
vent at the outside of the
PVC-DWV (Drain Waste & Vent)
Table 1 sho
(Pipe & Fittings)
TABLE 1
Fittin
45° St anda r d E l bow
90° St anda r d E l bow
45° L o ng-S weep El b ow
90° L o ng-S weep El b ow
5. Wipe all excess cement from the
joint with a rag. Allow 15 minutes
before handling. Cure time varies
according to fit, temperature and
humidity.
NOTE: Stir the solvent cement fre-
quently while using. Use a natural
bristle, one inch wide brush or the
applicator supplied with the can.
IMPORTANT: For Proper Installation DO
NOT use solvent cement that has
become curdled, lumpy or thickened.
DO NOT thin. Observe shelf precautions
printed on containers. For application
below 32°F, use only low-temperature-
applies to venting tables in both th type solvent cement.
For correct installation of the vent pipe,
vided onl
follow the instructions provided by the
Instea d, elbows a
manufacturers of the pipe, primer and
solvent.
EQUIVALENT VENTING –
ASSIGNING VENT
veral different ty pes of el
LENGTH TO ELBOWS
This section applies to venting tables in
rd Specification for Drain, Waste and
both the NON-DIRECT and DIRECT
VENT tables in this book. Vent tables
are provided only in equivalent length
and do not reference elbows or a maxi-
mum number of elbows. Instead, elbows
are assigned a length as described
below. The length determined for each
elbow is subtracted from the max vent
length in the tables to determine how
much straight vent pipe (in ft) can still be
used.
SPECIFICATION
p ¼ bend 90 degree (long
plastic pipe. A standard
uivalent length can be use
structure, suc
w s the equiv alent lengths of different t
Table 1
g Type Equivale nt L e ngth
5 feet o f pi pe
10 feet of pi p e
2- 1/ 2 feet of pi p e
5 feet o f pi pe
EL BOWS
e N ON-DIRECT and DIRE CT VENT ta bles in this
y in equivalent length and do
r e assigned a l ength as desc
the m ax vent len gth in the tables to determine how m
bows that ca n be used for constructing
on ¼ bend and ¼
ASTM
D1785
F891
D2466
D2241
D2241
F628
D1527 radius) elbo w has an e q ui valent length of 5 feet of st
90° elbow ha
D2468
d in circum stances where
D2661
h as in areas with large accum
ype s of elbo
D2665
There are several different types of
elbows that can be used for con-
structing a vent system. The draw-
ings below show the dimensions of
common 1/4 bend and 1/4 bend long
sweep 90 degree elbows from ASTM
3311, Standard Specification for
Drain, Waste and Vent (DWV) Plastic
Fittings Patterns.
not referenc e elbows or a m
ribed below. The length determi
A long sweep 1/4 bend 90 degree
(long radius) elbow has an equivalent
length of 5 feet of straight pipe for
either 2 or 3 inch plastic pipe. A stan-
a vent sy
dard 90° elbow has an equivalent
length of 10 feet of pipe. This equiva-
bend long sweep 90 degre
lent length can be used in circum-
Vent (DW V ) Plastic Fittings
stances where it might be necessary
to lengthen the vent at the outside of
the structure, such as in areas with
large accumulations of snow in win-
ter. Table 1 shows the equivalent
lengths of different types of elbows:
With the equivalent length vent
concept a vent system can be
used any number of elbows and
length of straight pipe as long as
the maximum equivalent vent
length is not exceeded.
Example:
An RGRC-06 direct vent installation
needs a 31 foot long vent run with 5
elbows and 2 inch pipe.
31 feet of 2 inch pipe =
equivalent feet
5 - 1/4 bend long sweep
elbows =
equivalent feet
Total =
equivalent feet
Since the maximum equivalent vent
length for an RGRC-06 is 60 feet, this
s an equivalent length of 10
installation is acceptable.
it might be necessary
If the same installation tried to use
standard elbows:
ulations of snow in winte
31 feet of 2 inch pipe =
ws:
equivalent feet
5 - standard 90 degree
=
equivalent feet
Total =
equivalent feet
And this installation is not acceptable
as it exceeds the 60 foot maximum
listed for the RGRC-06 model.
axim um
uch straight
ste m . The
e elbows
31
25
56
to l engthen the
31
50
81
13