BI RDP-12 User manual

MODEL RDP-12
REMOTE MOUNT DUAL BLOWER
BUILDING PRESSURIZATION UNIT
600 Gulf Freeway
Texas City, TX 77591
PHN: [phone]
FAX: [phone]
Copyright © 1996 - Bebco Industries, Incorporated - All Rights Reserved
Environmental Control Units Division
Bebco Industries
ECU Division Technical Bulletin RDP-12-R1.0 05/97
Opening: 21 Sq Ft Maximum
Area: 80 Sq Ft Maximum
Technical Description
Model RDP-12 is a remote-mount
pressurization unit for control rooms or buildings
containing no internal source of flammable vapors
orgases. Theunitutilizesaprimaryandsecondary
fantopressurizeroomsorbuildingswithopening(s)
not exceeding a total of 21 square feet and a floor
area not exceeding 80 square feet. The primary
faniscontrolledbyavariablespeeddrivetomaintain
asafe(0.25")pressurewhenthedoorwayissealed.
The secondary fan engages upon loss of safe
pressure, to generate a minimum air velocity of
sixty(60)feetperminutethroughthedoorway,and
functionsasaredundantfaniftheprimaryfanfails.
This unit, combined with an intake system that
drawsfreshairfromanonhazardousarea,reduces
the hazardous (classified) area rating within the
room or building from Class I, Division 1 or 2 to
nonhazardous, in accordance with NFPA 496,
Chapter 5.
Basic Operation
Unit must be powered by a local disconnect
switch connected ahead of building power or
connectedtoa separatepowersource. The unitis
startedbyclosingthebuildingdoorandplacingthe
secondary fan switch in the "automatic" position
andtheprimaryfanswitchinthe"on"position. The
primary fan then engages to regulate air flow and
maintainasafepressure. Whenthedoorisopened,
pressure will fall below the alarm setpoint. The
primaryfan willthen increase velocity, and the unit
will activate an alarm signal delay timer and a
secondary fan delay timer. These timers are field-
adjustabletopermitimmediateordelayedresponse
to changes in pressure. Both timers are activated
and reset as pressure falls below and rises above
the alarm setpoint. If the secondary fan or alarm
engages, they disengage when the door is sealed
and pressure rises above the alarm setpoint.
DIVISION 1 AREA APPLICATION NOTE:
INSTALLER MUST PROVIDE DISCONNECT EQUIPMENT TO
AUTOMATICALLY REMOVE POWER FROM ALL NONRATED
DEVICES, UPON FAILURE OF THE PRESSURIZATION UNIT.
Standard Controls
Primary Fan "On" Indicator
- indicates that primary fan is engaged
- flashes when the ESD or ECO is engaged
Primary Fan Control Switch
- engages and disengages primary fan
Secondary Fan Control Switch
- off, manual and automatic positions
Alarm "Engaged" Indicator
- indicates alarm signal is active
- flashes when alarm signal is bypassed
Alarm Signal Bypass Switch
- allows bypass of alarm relay
RDP Horizontal Side
Angle View
Control Enclosure

Copyright © 1996 - Bebco Industries, Incorporated - All Rights Reserved
Unit Specifications
Shipping Dimensions: 28" h x 28" w x 70" d
Shipping Weight (Lbs): 360
Operating Temp Range: -40°F - 120°F
Power Requirements: 208 / 240 VAC 1Ø, 20 A
Safe Pressure Setpoint: 0.25" - field adjustable
Alarm Setpoint: 0.15" - field adjustable
Average CFM: * 65.24.
Maximum CFM: 1370 feet/min.
Normal Sound Level: ** 60 db min. / 70 db max.
Fresh Air Intake: 12" Diameter
Field Wiring Conduit Entries: 3/4" FPT
Alarm Contact Rating: 15 Amps @ 120 VAC
Division 1 Unit Motors: Rated Cl. I, Div. 1, Gr. C & D
Division 2 Unit Motors: Rated Cl. I, Div. 2, Gr. C & D
Primary Motor: 3Ø Inverter Duty, T3, 100 Hz
Secondary Motor: 1Ø Perm. Split Cap., T3, 60 Hz
Primary Motor RPM: 3000 Max.
Secondary Motor RPM: 1725 Max.
* Average CFM through a 21 square feet opening
** Normal sound level tested in acoustic sound chamber
with primary fan engaged and door sealed
Material Specifications
NEMA 4 Blower Housing: * Painted 14 Ga Galv. Steel
NEMA 4X Blower Housing: *Painted 14 Ga 316 SS
Fan Venturis: Painted Carbon Steel
Fan Blades: Nonsparking Alum.
Pressure Gauge: Alum. w / Enamel Finish
Tube Fittings: 316 SS & Nylon
Unit & Device Nameplates: Silkscreened Lexan®
Model Number Nameplate: Silkscreened SS
Cover Plate Fasteners: SS Screws & Bolts
Access Door Fasteners: Cast Zinc Body / Zinc Bolt
Elect. Enclosures & Fittings: Cast Zinc & Aluminum
Electrical Wiring: Brass MI Cable & Fittings
w/ PVC Jacket
* Paint Finish Specifications:
2 mil epoxy primer & 2 mil white textured urethane finish
Lexan®is a registered trademark of the General Electric Corporation
Mechanical Description
ThebodyofModelRDP-12isaseal-weldedNEMA4or
4X blower housing that features one (1) full size access
door, three (3) intake openings, and two (2) opening
covers. The housing is designed for remote mounting in
combination with Bebco Models ADGA, DCF, DE and/or
DN ductwork for installation on the wall or roof of the
protectedbuilding. Inaddition,thehousingcanbesupplied
with an optional emergency remote control junction box
for ECO or ESD-IS barrier applications.
Theblowerhousingisfittedwithprimaryandsecondary
fans mounted in a compact in-line arrangement with the
secondary fan mounted directly behind the primary fan.
Each motor is connected with approved MI (mineral
insulated)cabletoseparatedisconnectswitchesmounted
external to the blower housing. The explosion proof
control enclosure contains a variable speed drive, a VFD
interface card and an array of control switches and
indicators. The explosion proof control enclosure can be
mounted on any flat wall surface inside or outside of the
protected building. A 4" building pressure indicator,
scaled to inches of water and color coded to indicate low,
high and safe building pressures, is mounted above the
explosion proof control enclosure on a stainless steel
plate. Thebuildingpressureindicatorfeaturesa1/4"tube
fitting and sintered vent for references of building and
atmospheric pressures.
Intake Stack
Connection
Intake Stack
Connection
Gasket
Door Hinge
Mounting
Bracket
Blower Housing
Body
Door Frame
Gasket
Secondary Fan
Motor
Secondary Fan
Motor Wiring
Intake Stack
Connection w/ Blind
Cover Plate
Primary Fan
Motor
Primary Fan
Motor Wiring
Factory Installed
Primary &
Secondary Fan
Motor Disconnect
Switches, Explosion
Proof Fittings,
Conduit & Wiring
Note: Fan
disconnects can be
installed on opposite
side if requested at
time of order
Primary
Fan Engaged
Indicator
Primary
Fan Control
Switch
Secondary
Fan Control
Switch
Pressure Loss
Alarm Indicator
Control Enclosure
face view with door closed
Blower Housing
top view with door removed
Building
Pressure
Indicator
Building
Pressure
Indicator
Mounting
Bracket
Alarm System
Bypass Control
Switch
Control Enclosure
rear view
Building
Pressure
Indicator
Low Port
Flame Arrestor
High Port
Flame Arrestor
Control
Enclosure
Explosion Proof
Housing
Building
Pressure
Connection Port
(High Port)
Atmospheric
Pressure
Connection Port
(Low Port)
Control
Enclosure
Mounting Foot
(typical 4)

ECO In
ECO Out
ESD In
ESD Out
Copyright © 1996 - Bebco Industries, Incorporated - All Rights Reserved
Operation Control Features
FIELD-ADJUSTABLE
PRESSURE & ALARM SETPOINTS
PFS - (Primary Fan Speed) Adjusts primary fan speed to
set desired pressure. CW (Clockwise) to decrease.
Factory setpoint: 0.25"
Normal range of adjustment: 0.10" to 0.40"
ASP - (Alarm Setpoint) Adjusts alarm setpoint to activate
alarm at desired pressure. CW (Clockwise) to decrease.
Factory setpoint: 0.15"
Normal range of adjustment: 0.05" to 0.25"
FIELD-ADJUSTABLE
SECONDARY FAN & ALARM DELAYS
SFD - (Secondary Fan Delay) adjusts time delay cycle to
prohibitsecondaryfanfrom engagingwhenpressurefalls
below alarm setpoint.
Factory setpoint: 0 seconds
Normal range of adjustment: 0-35 seconds
ASD - (Alarm Signal Delay) adjusts time delay cycle to
prohibitalarmrelayfromdeenergizingwhenpressurefalls
below alarm setpoint.
Factory setpoint: 15 seconds
Normal range of adjustment: 0-35 seconds
Notes: Time delay cycles reset automatically if "safe"
building pressure is restored before cycles end.
All controls permit real-time adjustment.
Emergency Remote Control
OPTIONAL USER INPUTS
ESD-(EmergencyShutdown)WhenVFDInterfaceBoard
jumperisinstalled,unitallowsusertoremotelydisengage
primary and secondary fans, regardless of primary and
secondary fan control switch positions.
Typicalinputdevices: emergencyshutdownswitches,fire
extinguishing or alarm systems and stack mounted
combustible gas or hydrogen sulfide sensors.
ECO-(EmergencyControlOverride)WhenVFDInterface
Board jumper is installed, unit allows user to remotely
engageprimaryandsecondaryfans,regardlessofprimary
and secondary fan control switch positions.
Typicalinputdevices: controlroommountedcombustible
gas, hydrogen sulfide, or oxygen deficiency sensors.
OPTIONAL WIRING METHODS
HW - (Hard Wiring) Selection of this option requires the
useofconduit,sealsand wiring approved forthelocation.
IS-(IntrinsicallySafe)Selectionofthisoptionallowsuse
of intrinsically safe cabling approved for the location.
NOTE: Loops are self-powered 5 VDC 20 ma signals,
regardless of wiring method selection. Signals
must be maintained independently by normally
closedswitchestopreventshutdownoroverride.
PRIORITY SELECTION SWITCH
In cases where both optional inputs are utilized, VFD
InterfaceBoardjumperallowsusertoselectthepreferred
action (shutdown or override) in the unlikely event of
simultaneous loss of signal. When VFD Interface Board
priority (PTY) jumper is installed, priority is given to the
Emergency Control Override function.
Seerear coverforESD&ECOinputorderinginformation.
VFD Interface Card
Explosion Proof
Control Enclosure Door
Electrical Field Wiring Diagrams
Transducer
Interface
Cable Header
ESD & ECO
Interface
Cable Header
Microprocessor
Door Card
Interface
Cable Header
ECO Enable Pin
ESD Enable Pin
Priority Select Pin
Alarm Relay
20 Amp T1 & T2
Output Fuses
Sec. Fan Relay
Alarm Relay
Terminals
Explosion Proof
Control Enclosure
Variable
Frequency Drive VFD Interface Card Control Operators & Indicators Operator Wiring Cable Interface Card
VFD
Interface
Cable Header
Alarm Signal
Delay Timer
(ASD)
Primary Fan
Speed Control
(PFS)
Alarm Setpoint
Control
(ASP)
Secondary Fan
Delay Timer
(SFD)
Transformer
1 Amp L1
Input Fuse
220 VAC Power
In (Gnd, L1 & L2)
Secondary Motor
Output (T1 & T2)
Intrinsically
Safe Version
Optional ESD & ECO Inputs
1
2
3
4
ESD Out
ESD In
ECO Out
ECO In
Hard Wire
Version
AC Power & Primary Fan
VFD Controller Terminal - TM2
L2
(hot)
L1
(hot) T1 T2 T3
Unit Power In
208-240 VAC
Power Out to DS-1
Primary Motor
Disconnect Switch
Alarm Relay & Secondary Fan
VFD Interface Card Terminal - P4
NC C NO
T1
T2
Power out
to DS-2
Secondary
Motor
Disconnect
Switch
Alarm Relay
Contacts
15 amps @ 120 VAC
123456 78
123456 78
Normally
Closed
Contacts

Spiral Stack Cap
Typical Spiral Pipe Section
Typical Flange Connection
(gasket & bolt kit required)
Spiral Pipe Tee
RDP-12 Unit
Pressurized Building
Spiral Pipe Tee
Custom Length Spiral
Building & Stack Slabs
Grade
Model RDP-12 Unit Accessories
Housing Dimensions
Typical Installations
Wall Mount
Bebco Industries, Incorporated Environmental Control Units Division 600 Gulf Freeway, Texas City Texas 77591 Phn: [phone]
Roof Mount
EMERGENCY REMOTE CONTROL INPUTS
ESD-IS-RM Intrinsic Safe ESD
ECO-IS-RM Intrinsic Safe ECO
ESD/ECO-IS-RM Intrinsic Safe ESD/ECO
ESD/ECO-HW-RM Hard Wire ESD/ECO
REMOTE ALARM BEACONS AND HORNS
RAB-1 Division 1 Remote Alarm Beacon
RAB-2 Division 2 Remote Alarm Beacon
RAH Division 1 Remote Alarm Horn
WARNING NAMEPLATES
BPCN-1 Building Pressurization Caution
SDWN-1 Sealed Door Warning
INSTALLATION & OPERATION MANUAL
RDP-12-IOM Installation & Operation Manual
GALVANIZED OR STAINLESS STEEL SPIRAL PIPE
SP-12-120 10' Flanged Stack Section
SC-12 Flanged & Screened Rain Cap
ST-12 Flanged Tee w/ Coupler
SN-12 Flanged Elbow w/ Coupler
BC-12 Blind Flange Cover Plate
GK-12 Flange Gasket & Bolt Kit
SPIRAL PIPE STACK & GUY WIRE ANCHOR KITS
SPAK-12 Spiral Pipe Anchor Bolt Kit
EAGK-40-1216 Earth Anchor Guy Wire Kit
CAGK-40-1216 Concrete Anch. Guy Wire Kit
GAL. OR S.S. FREE STANDING RIGID PIPE STACKS
RP-12-25 25' 10 Ga Rigid Pipe Stack
RPAK-12 Rigid Pipe Anchor Bolt Kit
ADDITIONAL ITEMS
FDK-12-300 25' Flexible Duct Intake Kit
GAS DETECTOR SYSTEMS
CGDM-100 Combustible Gas Monitor
CGDS-100 Combustible Gas Sensor
HGDM-100 Hydrogen Sulfide Monitor
HGDS-100 Hydrogen Sulfide Sensor
OGDM-100 Oxygen Deficiency Monitor
OGDS-100 Oxygen Deficiency Sensor
GDPS-100 24 VDC Monitor Power Supply
GDSB-1216 Sensor Stack Mount Bracket
REMOTE MOUNT DISCHARGE COMPONENTS
ADGA-12 Adj. Discharge Grill Assembly
DE-12 Discharge Extension
DN-12 Discharge Ninety
DCF-12 Discharge Curb Flange
10.75"
6.5" 9.5"
18"
Control Enclosure
Front View
(Discharge)
Front View
(Intake)
16.25"
8.125"
8.125"
12.25" O.D.
TYP 3
0.25" O.D.
TYP.8
90° max.
16.25"
90° max.
1.3125"
1.3125"
13.625"
16.25"
44.875"
36.9375"
8.125"
7" 32" 0.75"
11.125"
15"
3/4"
FPT
Side View
44.875"
7" 32" 1.6875"
1.6875"
12.875"
Top View
IMPORTANT NOTES
All specifications subject to change without notice.
Warranty&Liabilitypoliciesavailableuponrequest.
The simplified installation diagrams to the left are
shownwithoutguywireorstructuralsupportsystems,
for the purpose of maintaining diagram clarity.
Installermustrecognizetheneedforadequatestack
guy wire or structural support systems as well as
foundation anchoring systems. Installer assumes
all liability for the installation and integrity of said
systems, wherein design considerations should
ensure that stack guy wire or structural support
systemsarecapableofwithstandinglocalinclement
weather conditions.
FOUR (4) VIBRATION DAMPENING MOUNTS WITH
SCREWS, ONE (1) BPCN-1 NAMEPLATE & ONE (1)
INSTALLATION & OPERATION MANUAL
PROVIDED WITH EACH UNIT
Model Number Designations
RDP - 12 - D1 - GS
Series Model Number
Remote Mount Dual Blower
Building Pressurization Unit
Unit Size
12 - 12" Diameter Fan Blades
Division Rating
D1 - Division 1
D2 - Division 2
Housing Material
GS - 14 Ga Galvanized Steel w/ White Paint Finish
SS - 14 Ga Stainless Steel w/ White Paint Finish
Local Sales Representative