Dual Certification: Non-Direct/Direct Vent; Materials And Joining Methods; Proper Vent/Flue And Combustion Air Piping Practices - Amana MVM97 Installation Instructions Manual

U
PON COMPLETION OF THE FURNACE INSTALLATION
INSPECT THE ENTIRE FLUE SYSTEM BOTH INSIDE AND OUTSIDE OF THE
FURNACE TO ASSURE IT IS PROPERLY SEALED
SYSTEM CAN RESULT IN SERIOUS PERSONAL INJURY OR DEATH DUE TO
EXPOSURE TO FLUE PRODUCTS

Dual Certification: Non-Direct/Direct Vent

This furnace is dual certified and may be installed as a
non-direct vent (single pipe) or direct vent (dual pipe)
appliance. A non-direct vent installation requires only a
vent/flue pipe, while a direct vent installation requires
both a vent/flue pipe and a combustion air intake pipe.
Refer to the appropriate section for details concerning
piping size, length, number of elbows, furnace connec-
tions, and terminations.
T ,
O AVOID BODILY INJURY FIRE OR EXPLOSION
MUST BE KEPT AWAY FROM ALL IGNITION SOURCES
,
FLAMES AND EXCESSIVE HEAT
A
VOID BREATHING CEMENT VAPORS OR CONTACT WITH SKIN AND
.
EYES

Materials and Joining Methods

Two- or three-inch nominal diameter PVC Schedule 40
pipe meeting ASTM D1785, PVC primer meeting ASTM
F656, and PVC solvent cement meeting ASTM D2564 speci-
fications must be used. Fittings must be DWV type fittings
meeting ASTM D2665 and ASTM D3311. Carefully follow
the pipe manufacturer's instructions for cutting, cleaning,
and solvent cementing of PVC.
The use of Schedule 40 PVC cellular core DWV meeting
ASTM F891-1 or ABS cellular core (Foam Core) plastic pipe
is also acceptable as a flue/vent and intake pipe material.
PVC primer meeting ASTM F656 and PVC solvent cement
meeting ASTM D2564 specifications must be used. Fittings
must be DWV type fittings meeting ASTM D2665 and ASTM
D3311. Carefully follow the manufactures instructions for
cutting, cleaning and solvent cementing of PVC.
For Canadian installations; all PVC pipe, fittings and join-
ing materials must be UL S636 listed.
NOTE: Requirement does not apply to the combustion air
pipe.
As an alternative to PVC pipe, primer, solvent cement,
and fittings, ABS materials which are in compliance with
the following specifications may be used: Two-or-three-
inch solid wall ABS Schedule 40 pipe must meet ASTM
D1527 and, if used in Canada, must be CSA listed or,
WARNING
,
CAREFULLY
. L
EAKS IN THE FLUE
,
INCLUDING CARBON MONOXIDE
WARNING
,
SOLVENT CEMENTS
( . .,
I E SPARKS
)
AS THEY ARE COMBUSTIBLE LIQUIDS
two-or-three-inch cellular core ABS Schedule 40 pipe must
meet ASTM F628 and, if used in Canada, must be CSA list-
ed. Solvent cement for ABS to ABS joints must meet ASTM
D2235 and, if used in Canada, must be CSA listed. The sol-
vent cement for the PVC to ABS transition joint must meet
ASTM D3138. Fittings must be DWV type fittings meeting
ASTM D2661 and ASTM D3311 and, if used in Canada, must
.
be CSA listed. Carefully follow the manufacturers' instruc-
tions for cutting, cleaning, and solvent cementing PVC
and/or ABS.
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 open-
ing to the centerline of the other opening for 2" diameter
pipe, and 4 9/16" minimum for 3" pipe.
The use of two short radius 45 degree elbows is permit-
ted to provide clearance to refrigerant piping above the
furnace.
Proper Vent/Flue and Combustion Air Piping
,
OPEN
Practices
.
/
OR
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.
Piping must be adequately secured and supported to pro-
hibit sagging, joint separation, and/or detachment from
the furnace. Horizontal runs of vent/flue and combustion
air piping must be properly supported. PVC pipe supports
must be no more than 5' apart. For ABS pipe, supports
must be no more than 3' apart. Horizontal pipe runs
must maintain a 1/4 inch per foot downward slope, back
towards the furnace, to properly return condensate to the
furnace's drain system.
PREFERRED
Figure 6