Maytag Amana ACVM97 Series, Инструкция по эксплуатации, Страница: 14 / 85

SYSTEM OPERATION
14
All 90° elbows must be medium radius (1/4 bend DWV) or
long radius (Long sweep 1/4 bend DWV) types conforming
to ASTM D3311. A medium radius (1/4 bend DWV) elbow
measures 3 1/16” minimum from the plane of one opening to
the center line of the other opening for 2” diameter pipe, and
4 9/16” minimum for 3” pipe.
PROPER VENT / FLUE AND COMBUSTION AIR PIP-
ING PRACTICES
Adhere to these instructions to ensure safe and proper furnace
performance. The length, diameter, and number of elbows of
the vent / flue pipe and combustion air pipe (when applicable)
affects the performance of the furnace and must be carefully
sized. All piping must be installed in accordance with local
codes and these instructions.
T
O AVOID BODILY INJURY
,
FIRE OR EXPLOSION
,
SOLVENT CEMENTS
MUST BE KEPT AWAY FROM ALL IGNITION SOURCES
(
I
.
E
.,
SPARKS
,
OPEN
FLAMES
,
AND EXCESSIVE HEAT
)
AS THEY ARE COMBUSTIBLE LIQUIDS
.
A
VOID BREATHING CEMENT VAPORS OR CONTACT WITH SKIN AND
/
OR
EYES
.
WARNING
PREFERRED
Figure 4
TRANSITION NO LESS
THAN 45 DEGREES TO
HORIZONTAL PLANE TO
AVOID CREATING A WATER
TRAP IN VENT PIPING.
ACCEPTABLE
Figure 5
NO TRANSITION ON
HORIZONTAL PLANE,
THIS CREATES A
WATER TRAP AND
RESTRICTS FLUE
GASES
Figure 6
Some models require the use of 3” pipe. Do not transition
from a 2” to 3” pipe in a horizontal section of pipe as this may
create a water trap.
Piping must be adequately secured and supported to prohibit
sagging, joint separation, and/or detachment from the fur -
nace. Horizontal runs of vent/flue piping must be supported
every three to five feet and must maintain a 1/4 inch per
foot downward slope, back towards the furnace, to properly
return condensate to the furnace’s drain system. Allowances
should be made for minor expansion and contraction due to
temperature variations. For this reason, particular care must
be taken to secure piping when a long run is followed by a
short offset of less than 40 inches.
Precautions should be taken to prevent condensate from
freezing inside the vent/flue pipe and/or at the vent/flue pipe
termination. All vent/flue piping exposed to freezing tem -
peratures below 35°F for extended periods of time must be
insulated with 1/2” thick closed cell foam. Also all vent/flue
piping exposed outdoors in excess of the terminations shown
in this manual (or in unheated areas) must be insulated with
½” thick closed cell foam. Inspect piping for leaks prior to
installing insulation.
TERMINATION LOCATIONS
Non-Direct Vent
Vent/Flue Termination
No Terminations
Above Walkway
4'
min.
Non-Direct Vent
Vent/Flue Termination
Direct Vent
Vent/Flue Termination
Forced Air
Inlet
Non-Direct Vent
&
Direct Vent
Vent/Flue Terminations
Grade or Highest
Anticipated
Snow Level
12" min.
4' min.
12" min.
Vent Termination Clearances
Figure 7
NOTE: Refer to
Location Requirements and Considerations
for combustion air contaminant restrictions.