B01 Attachment J02-e Appendix B - Exhaust Fan Specifications.pdf
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- Solicitation number
- 75H70125Q00025
About this file
This document is a technical specification sheet for a DR33HRA High Speed Direct Drive Centrifugal Downblast Exhaust Fan. The fan features a 0.333 HP, single-phase, 115V motor with an exhaust performance of 900 CFM at 1495 RPM, producing a discharge velocity of 446 FPM. Key construction features include a heavy gauge aluminum housing, centrifugal backward inclined wheel, weatherproof safety disconnect switch, speed control, and heavy-duty ball bearing motors. The fan weighs 58 lbs and includes a standard bird screen and thermal overload protection. Sound measurements at 1495 RPM are 63.5 DBA with 11.7 Sones. The specification sheet includes detailed wiring diagrams, dimensional drawings, and performance curves, along with installation and electrical information for the exhaust fan system.
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Text version
DR33HRA (#1) EF Weight: 58 lbs.
High Speed Direct Drive Centrifugal Downblast Exhaust Fan with speed control (speed control included for single phase only), birdscreen, disconnect switch and 11-3/4" wheel
EXHAUST MOTOR
Model BMN48-250I1-ES-M52-CA-60-115 • 0.333 HP • 1 Phs • 115 V • 60Hz • 4.3 FLA • TEAO-ECM (Totally Enclosed Air Over Electronically Commutated Motor)
EXHAUST PERFORMANCE
Volume: 900 CFM RPM: 1495 TS: 4599 ft/mi
Static Pressure:
0.525" w.g.
(0.250" Ext. + 0.275" Opt.)
BHP: 0.230 Discharge Velocity:
446 FPM
Altitude: 0' Ambient Temp:
70.0°F FEI: 1.335
EXHAUST INSTALLATION INFORMATION
Unit Voltage: 1 phs 115 V 60Hz
Unit Main Input: 5.4 Amps MCA • 15 Amps MOP • 115 V
SCCR: 10 kAmp
CONSTRUCTION FEATURES
Housing constructed of heavy gauge aluminum
Centrifugal backward inclined, non-overloading wheel
Weatherproof safety disconnect switch
Speed control
Heavy duty ball bearing motors permanently lubricated, rated for continuous operation, and thermally protected
Integral electrical conduit runs from fan base to motor compartment
Shaft precision ground & polished
Fresh air channelled through motor to ensure long motor life
Durable base with welded corners
CONFIGURED OPTIONS
ECM Wiring Package and Manual or 0-10VDC Control for Exhaust EC motors. MSC Controller. **DO NOT ORDER UNDER WARRANTY, SEE PART NUMBER "CAS MSC**.
Gravity Back Draft Damper - with flange, damper is 15" sq., 2" deep, O.D. of flange is 17" sq.
Generated for job # 7184409
DR33HRA SOUND (1495 RPM) AT 5 FT. IN OCTAVES:
1 2 3 4 5 6 7 8
70.7 77.6 78.8 71.7 67.4 66.2 61.1 50.1
LWA: 75 Sones: 11.7 DBA: 63.5
Note: Sound data across operational range. Tested in accordance to AHRI Standard 270/370.
Generated for job # 7184409
- STANDARD BIRD SCREEN.
- SPEED CONTROL.
- UL705.
- SAFETY DISCONNECT.
FEATURES:
- ROOF MOUNTED FANS.
21"
26 1/4"
19 1/8"
16"
12 1/8"
2"
- DIRECT DRIVE CONSTRUCTION
(NO BELTS/PULLEYS).
26 1/4"
21"
TOP VIEW
- THERMAL OVERLOAD PROTECTION (SINGLE PHASE).
(ROOF OPENING)
BACKDRAFT DAMPER INSTALLATION
BACKDRAFT DAMPER.
AIR FLOW
Label Description Location
MT-01 Fan Motor [3]
SW-01 Main disconnect switch [3]
Component Identification
Installed Options
RD - RED
BL - BLUE
WH - WHITE
OR - ORANGE
BR - BROWN
BK - BLACK
PK - PINK
PR - PURPLE
GY - GRAY
GR - GREEN
YW - YELLOW
WIRE COLOR
DWGSIZE
DENOTES FIELD WIRING
DENOTES INTERNAL WIRING
NOTES
SW-01
BK
MT-01
GR
WH
GR
WH
BK
3 4
1 2
WH
*22 AWG WHITE ROTATION WIRE
*22 AWG
BMN MOTOR ONLY. CONNECT TO POWER
LEG BLACK WIRE TO REVERSE ROTATION
GR
24VAC 20VA Transformer
Motor Speed Controller
TR-01
MSC
[2]
[1]
CINCOUTCIN
10V24V
J2
CONTROL
MOTOR
OPTIONAL 0-10VDC
SPEED REFERENCE INPUT
OPTIONAL 0-10VDC
0-10V MOTOR CONTROL
SIGNAL OUTPUT
0-10V MOTOR CONTROL
SIGNAL
BK
RD
BK
RD
BK
RD
BK
RD
TR-01
BK
RD
WH
BK
TR-01
24V
BK
RD
WH
BK
MSC
JUMPER WIRE DISCONNECTED.
TO REVERSE ROTATION
WHWH
CKEC MOTOR ONLY.
CONNECT JUMPER FOR
EXHAUST 0.3HP-115V-1P-4.3FLA
MOTOR INFO
ELECTRICAL INFORMATION
MOTOR/CTRL MCA: 5.4A
MOTOR/CTRL MOP: 15A
DRAWING NUMBER
JOB
MODEL
Exhaust Fan Wiring
EXH7184409-1
7184409
DR33HRA
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