must slope downward toward
the furnace for condensate to
drain down the pipe and into the
condensate drain.
10. Insulate any part of the vent
pipe passing through an
unconditioned space with at
least 1" thick medium density
foil-faced fiberglass insulation,
or equivalent Armaflex/Rubatex
insulation.
11. Any alterations to this kit not
authorized by these instructions
or the use of any components or
accessories not design certified
by the manufacturer may result
in improper furnace operation.
The manufacturer cannot and
will not be responsible for any
injury or damage caused by the
use of such components or
accessories.
DIRECT VENT ANO COMBUSTION
AIR PIPE SIZING INFORMATION
The following table lists the
maximum pipe length in feet (shaded
area) of the exhaust and combustion
air pipes that are allowable. The pipe
length depends on the number of
elbows used, the furnace input and
the type of termination used.
The
length and number of elbows
applies to each pipe.
y
TABLE18
The combustion air and exhaust
pipes should be the same length and
terminate in the same pressure zone.
For example, the 60,000 BTUH
furnace with 2" pipe may use 35 feet
of pipe and four elbows when the
standard termination is used.
A maximum of six (6) medium or
long sweep elbows may be used.
One 45° elbow is equivalent to one
90° elbow. When making an elbow
count, DO NOT include the elbows
used in the terminations.
90 PLUS GAS FURNACE VENTING TABLE
FOR DIRECT VENT APPLICATIONS
MAXIMUMALLOWABLELENGTHIN FEET OF EACH PIPE
FURNACE
PIPE
INPUT SIZE
(BTUH)
45,000
2"
2·
60,000
3"
2"
75,000
3"
98,000
3·
105,000
3·
120,000
3·
VENTTERMINATION
KITRECOMMENDED
TERMINATION
(RXGY·DO*Kits for
HorizontalVentingOnly)
Standard
RXGY·D02
Concentric RXGY·C01/RXGH02
Alternate RXGY-D02
Standard RXGY-D02
Concentric RXGY-C01/RXGY·E02
Alternate
RXGY·D02
Standard RXGY·D03
Concentric RXGY-C01/RXGY·E02
Alternate
RXGY·D03
Standard RXGY-D02
Concen:ric
Not Recommended
Alternate Not Recommended
Standard RXGY-D03
Concentric RXGY·C01/RXGY·E02
Alternate
RXGY·D03
Standard RXGY-D03
Concentric
RXGY·C01/RXGY·E02
Alternate
RXGY·D03
Standard RXGY·D03
Concentric RXGY-C01/RXGY-E02
Alternate
RXGY·D03
Standard RXGY-D03
Concentric RXGY-C01/RXGY·E02
Alternate RXGY-D03
Alternate
RXGY·D04
NUMBEROF ELBOWS
45° or 90°
Medium
I Long Radius ONLY
NOTES:
1. N.R • NOT RECOMMENDED
2. MAXIMUM OF 6 ELBOWS MAY BE USED. DO NOT COUNT ELBOWS IN ALTERNATE TERMINATION KIT
MEDlUM OR LONG SWEEP ELBOWS MAY BE USED
3. A 45 DEGREE ELBOW lS CONSIDERED ONE ELBOW
4. CONCENTRIC TERMINATION NO RXGY-C01 IS FOR THRU-THE·WALL VENTING.
5. CONCENTRIC TERMINATION NO. RXGY·E02 IS FOR THAU-THE-ROOF VENTING.
6. USE KITS RXGY-D02 (2") OR RXGY-003 (3") FOR STANDARD OR ALTERNATE THAU-THE-WALL VENTING
7. USE KIT RXGY-D04 FOR ALTERNATE VENTING OF 120.000 STU UNITS WITH LONG RUNS.
43
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