Ductwork - Air Flow - Amana AMS95 Installation Instructions Manual

XIII. CIRCULATING AIR & FILTERS
D - A F
UCTWORK IR LOW
Duct systems and register sizes must be properly designed for the
CFM and external static pressure rating of the furnace. Ductwork
should be designed in accordance with the recommended meth-
ods of "Air Conditioning Contractors of America" Manual D.
A duct system must be installed in accordance with Standards of
the National Board of Fire Underwriters for the Installation of Air
Conditioning, Warm Air Heating and Ventilating Systems. Pam-
phlets No. 90A and 90B.
A closed return duct system must be used, with the return duct
connected to the furnace. NOTE: Ductwork must never be attached
to the back of the furnace. Supply and return connections to the
furnace may be made with flexible joints to reduce noise transmis-
sion. To prevent the blower from interfering with combustion air or
draft when a central return is used, a connecting duct must be
installed between the unit and the utility room wall. A room, closet,
or alcove must not be used as a return air chamber.
When the furnace is used in connection with a cooling unit, the
furnace should be installed in parallel with or on the upstream side
of the cooling unit to avoid condensation in the heating element.
With a parallel flow arrangement, the dampers or other means
used to control the flow of air must be adequate to prevent chilled
air from entering the furnace and, if manually operated, must be
equipped with means to prevent operation of either unit unless the
damper is in the full heat or cool position.
When the furnace is installed without a cooling coil, it is recom-
mended that a removable access panel be provided in the outlet
air duct. This opening shall be accessible when the furnace is
installed and shall be of such a size that the heat exchanger can be
viewed for visual light inspection or such that a sampling probe
can be inserted into the airstream. The access panel must be
made to prevent air leaks when the furnace is in operation.
When the furnace is heating, the temperature of the return air en-
tering the furnace must be between 55°F and 100°F.
F - R T S
ILTERS EAD HIS ECTION
R A D
ETURN IR UCTWORK
Filters must be used with this furnace. Discuss filter maintenance
with the building owner. Filters do not ship with this furnace, but
must be provided by the installer. Filters must comply with UL900
or CAN/ULCS111 standards. If the furnace is installed without fil-
ters, the warranty will be voided.
On upflow units, guide dimples locate the side return cutout
locations. Use a straight edge to scribe lines connecting the
dimples. Cut out the opening on these lines. NOTE: An
undersized opening will cause reduced airflow.
Refer to Minimum Filter Area tables to determine filter area require-
ments.
B I T
EFORE NSTALLING HE
COOLING AIRFLOW REQUIREMENT (CFM)
600
0453BXA 194*
0703BXA ---
0704CXA ---
0904CXA ---
0905DXA ---
1155DXA ---
*Minimum filter area dictated by heating airflow requirement.
Permanent Minimum Filter Area (sq. in)
[Based on a 600 ft/min filter face velocity]
COOLING AIRFLOW REQUIREM ENT (CFM )
600
0453B XA 388*
0703B XA ---
0704CXA ---
0904CXA ---
0905DXA ---
1155DXA ---
*Minimum filter area dictated by heating airflow requirement.
Disposable Minimum Filter area (sq. in)
[Based on 300 ft/min filter face velocity]
U I
PRIGHT NSTALLATIONS
Depending on the installation and/or customer preference, differ-
ing filter arrangements can be applied. Filters can be installed in
the central return register or a side panel external filter rack kit
(upflows). As an alternative a media air filter or electronic air cleaner
can be used as the requested filter.
The following figure shows possible filter locations.
AIR FLOW
CENTRAL
RETURN
GRILLE
SIDE RETURN
EXTERNAL FILTER
RACK KIT
(EITHER SIDE)
Possible Upright Upflow
Filter Locations
NOTE: Internal filter retention is not provided on this furnace. If an
internal installation is desired, an internal filter retention kit is avail-
able as an accessory. Please see your distributor for details.
26
800 1000 1200 1400 1600
194* 240 288 --- ---
324* 324* 324* 336 ---
--- 291* 291* 336 384
--- 432* 432* 432* 432*
--- --- 388* 388* 388*
--- --- 486* 486* 486*
800 1000 1200 1400 1600
388* 480 576 --- ---
647* 647* 647* 672 ---
--- 583* 583* 672 768
--- 863* 863* 863* 863*
--- --- 777* 777* 777*
--- --- 971* 971* 971*
FILTER
ACCESS
DOOR
RETURN
DUCT
FILTER
SUPPORT
BRACKET
(PROVIDED)
AIR FLOW
Possible Upright Counterflow
2000
---
---
---
---
480
486*
2000
---
---
---
---
960
971*
CENTRAL
RETURN
GRILLE