Exterior Masonry Chimneys - Amana MVC80 Installation Instructions Manual

e m
xterior aSonry
(C i f
ategory urnaCeS
An exterior masonry chimney is defined as a "Masonry" chim-
ney exposed to the outdoors on one or more sides below the
roof line." The ability to use a clay lined masonry chimney
depends on a parameter not associated with interior chimneys.
This variable is the geographic location of the installation.
Researchers have discovered that the winter design tem-
peratures have a direct impact on the suitability of this type
of venting. In most situations, the existing masonry chimneys
will require a properly sized metallic liner.
P
OSSIBILITY OF PROPERTY DAMAGE
DAMAGING CONDENSATION CAN OCCUR INSIDE MASONRY CHIMNEYS
-
WHEN A SINGLE FAN ASSISTED
)
FURNACE IS VENTED WITHOUT ADEQUATE DILUTION AIR
80%
CONNECT AN FURNACE TO A MASONRY CHIMNEY UNLESS THE
FURNACE IS COMMON VENTED WITH A DRAFT HOOD EQUIPPED
APPLIANCE OR THE CHIMNEY IS LINED WITH A METAL LINER OR
. A
METAL VENT LL INSTALLATIONS USING MASONRY CHIMNEYS MUST BE
SIZED IN ACCORDANCE WITH THE APPROPRIATE VENTING TABLES
80%
FURNACE IS COMMON VENTED WITH A DRAFT HOOD EQUIPPED
,
APPLIANCE THE POTENTIAL FOR CONDENSATION DAMAGE MAY STILL
EXIST WITH EXTREMELY COLD CONDITIONS
,
EXTERIOR CHIMNEYS OR ANY COMBINATION OF THESE CONDITIONS
T
HE RISK OF CONDENSATION DAMAGE IS BEST AVOIDED BY USING
MASONRY CHIMNEY AS A PATHWAY FOR PROPERLY SIZED METAL LINER
T B .
OR YPE METAL VENT
Throat
Damper
Breech
Clean Out
Typical Multiple Flue Clay Tile Chimney
C S
heCkliSt ummAry
This checklist serves as a summary of the items to be checked
before venting an 80+ furnace into a masonry chimney. In
addition, we recommend that a qualified serviceman use
C
himneyS
o )
nly
WARNING
,
PERSONAL INJURY OR DEATH
C I (80% AFUE
ATEGORY APPLIANCE
. D
O NOT
,
LONG VENT CONNECTORS
Wash
Roof Line
Clay Tile Size: 8" x 8" x12"
(Each x 24" Length)
Attic Floor
1/2" to 1" Air Space
Second Floor
First Floor
Water Heater
Vent Connector
F.A.F. Vent
Connector
Natural Draft
Fan Assisted
Water Heater
Forced Air
Furnace
Basement Floor
Figure 3
this checklist to perform a yearly inspection of the furnace
venting system.
This checklist is only a summary. For detailed information
on each of the procedures mentioned, see the paragraph
referenced with each item.
Proper Chimney
Termination?
(Check 1)
Chimney channel
free of solid and
liquid fuel
appliances?
(Check 2)
T B
YPE
Crown in good
condition
(Check 3)
. I
F AN
,
.
Cleanout free of
debris?
(Check 4)
Liner in good
condition?
(Check 5)
Dilution air
available?
(Check 6)
Complete the
installation.
(Check 7)
C 1 - p
heCk
A masonry chimney used as a vent for gas fired equipment
must extend at least three feet above the highest point where it
passes through the roof. It must extend at least two feet higher
than any portion of a building within a horizontal distance of
10 feet. In addition, the chimney must terminate at least 3 feet
above any forced air inlet located within 10 feet. The chimney
10
Change venting
arrangements
Rebuild crown
and/or Reline
roper Chimney terminAtion
(Fix 2)
(Fix 3)
(Fix 4)
Reline
(Fix 4)
Reline
(Fix 4)
Reline
(Fix 4)
.