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COMMON SUPPLY/RETURN
CONCENTRIC AIR DIFFUSER
SUPPLY AIR/PERFORMANCE
NOTE: The location of the combination supply and return diffuser should
not exceed 10 feet [3.05 m] above the floor level for units @ 1000 CFM
[472 L/s] or less and 12 [3.66 m] to 14 feet [4.27 m] above the floor level
for units with CFM greater than 1000 [472 L/s]. If the diffuser is installed
with a greater distance than recommended above, the supply air may
become stratified above the required comfort area causing uncomforta-
ble conditions.
Accessory
Approximate CFM [L/s]-Supply Air
.12 [.030].07 [.017] .10 [.024]Plenum & Supply/Return Duct
1575 [743] 1800 [850]1300 [614]
.16 [.040].09 [.022] .13 [.032]Diffuser
.11 [.027].06 [.015] .09 [.022]Economizer .17 [.042]
.24 [.060]
.17 [.042]
2200 [1038]
Diffuser Airflow CFM [L/s] Range of Throw Ft. [m]
14 [4.27]-16 [4.88]800 [378]-1200 [566]
18 [5.49]-28 [8.53]1600 [755]-2000 [944]
ACCESSORY EQUIPMENT
Accessory
Description
Model
Application
Accessory
Model No.
Roofcurbs
RSNA-B
RXSG-AAA08 (8" [203 mm] Height)
RXSG-AAA14 (14" [356 mm] Height)
RXSG-AAA24 (24" [610 mm] Height)
Supply & Return Diffusers
RSNA-B RXRN-BD15
Economizers (Downflow ONLY)
RSNA-B
RXRE-CAA30 (3 Position)
RXRD-CAM10 (Fully Modulating)
Fresh Air Damper
RSNA-B
RXRF-FAB1 (Motorized-35%)
RXRF-FAA1 (Fixed-35%)
Rectangular to Round Transition (Downflow)
RSNA-B
RXMC-CA02 (16" [406 mm] Ducts)
RXMC-CA03 (18" [457 mm] Ducts)
Filter Kit
RSNA-B RXRY-B01
Low Ambient Control
RSNA-B RXRZ-A18
High Pressure Control
RSNA-B RXAB-A02
Sideflow Rectangular to Round Transition
RSNA-B RXMC-BA01
Low Pressure Control
RSNA-B RXAC-A02
LP Conversion Kits
RSNA-B
RXGJ-EP84W (White-Rodgers Gas Valve)
RXGJ-EP85H (Honeywell Gas Valve)
Canadian High Altitude Kit (for Natural Gas only*)
RSNA-B RXRX-AH01
Designed to convert a side by side or an over and under arrange-
ment into a concentric distribution of air. The diffuser is flush
mounted, completely insulated, assembled, and internally baffled
to provide four way supply air distribution with a center return. To
make the assembly complete and ready to fit into a 2' [0.61 m] x
4' [1.22 m] suspended ceiling grid, the diffuser includes
adjustable supply louvers, hanging rings, anti-sweat gasket, and
round flanges for use with flexible ducts.
Model No.
RXRN-
Diameter
Inches [mm]
16 [406] 90 [40.82]
Shipping Wt.
Lbs. [kg]
Dimension A
Inches [mm]
20
1
/2 [521]BD15
SUPPLY/RETURN DIFFUSER
AIRFLOW/PRESSURE DROP
INFORMATION (INCHES W.C. [kPa])
NOTE: The location of the combination supply and return diffuser should
not exceed 10 feet [3.05 m] above the floor level for units @ 1000 CFM
[472 L/s] or less and 12 [3.66 m] to 14 feet [4.27 m] above the floor level
for units with CFM greater than 1000 [472 L/s]. If the diffuser is installed
with a greater distance than recommended above, the supply air may
become stratified above the required comfort area causing uncomforta-
ble conditions.
*If a particular unit is to be converted to operate on LP (propane) for elevations above 2000 ft. [609.6 m] in Canada, the existing Natural Gas to LP Conversion Kits for the
subject models already contain the necessary orifices and instructions to de-rate the input for 2000-4500 ft. [609.6-1371.6 m] Canadian applications.
[ ] Designates Metric Conversions
21
ACCESSORIES