BOSSCO Ecomaxx Owner's manual

BOSS PRODUCTS NORTH AMERICAN
SUPPLEMENTAL MANUAL FOR
ECOMAXX NO RETURN VALVE (EM-NRV)
TABLE OF CONTENTS
PAGE 2 – INTRODUCTION / WARRANTY
PAGE 3 – SUPPLEMENTAL MANUAL INFORMATION
PAGE 4 – SAFETY
PAGE 5 – NFPA COMPLIANCE
PAGES 6 THRU 8 – ECOMXX EM-NRV SPECIFICATIONS
PAGE 9 – O-EM-NRV-CP02 SPECIFICATIONS
PAGE 10 – RECEIVING THE ECOMAXX EM-NRV
PAGE 11 – ASSEMBLY INSTRUCTIONS (SIZES 7” THRU 10”)
PAGES 12 THRU 13 --
PAGES 14 THRU 17 --
PAGES 18 THRU 20 –
ASSEMBLY INSTRUCTIONS (SIZES 12” THRU 28”)
ASSEMBLY INSTRUCTIONS (SIZES 32” THRU 40”)
INSTALLING THE MICROSWITCH – O-EM-NRV-MS
PAGES 21 THRU 22 – INSTALLING THE DUST LEVEL SENSOR – O-EM-NRV-DLS
PAGES 23 THRU 24 – WIRING PANEL O-EM-NRV-CP02 TO MAIN CONTROL PANEL
PAGE 25 – 120VAC INPUT POWER WIRING
PAGE 26 – GENERAL WIRING DIAGRAM
PAGE 27 – EM-NRV PRODUCT GROUP SPARE PARTS
PAGE 28 – CONTACT INFORMATION
P.O. BOX 953 – 33100 NE IVY AVENUE - LA CENTER, WA 98629 – USA
PH: 360-263-2360 – FAX: [phone]
[e-mail] – WWW.BOSSPRODUCTSAMERICA.COM

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EM-NRV NORTH AMERICAN SUPPLEMENTAL MANUAL - V2016NRV-ELE
INTRODUCTION
Thank you for purchasing the EcoMAXX EM-NRV No Return Valve. The EM-NRV is an
Explosion Isolation Device specifically designed to prevent deflagration propagation between
connected equipment. The EM-NRV is ATEX certified and NFPA 69 compliant.
Required Items for NFPA 69 Compliance:
 O-EM-NRV-CP02, Intrinsically Safe Control Panel
 O-EM-NRV-MS, Microswitch
 O-EM-NRV-DLS, Dust Level Sensor
Complimentary Products:
 EM-HSAG line of High Speed Abort Gates
 EM-FBS line of Firebreak Shutters
 EM-XV line of Explosion Vents
 EM-FCS Spark Detection and Extinguishment Systems
 EM-IMS line of Dust Monitoring (Emissions) Systems
 ECOBOSS Line of Energy Management Control Systems
WARRANTY:
1. Boss Products, LLC warrants to the Buyer that the material sold to Buyer will be free
from manufacturing defects at the time of shipping of such material to the job site.
2. Boss Products, LLC further warrants to the Buyer that the workmanship and material
supplied to the Buyer will be free from defects under proper usage for a period of 12
months from the shipping date so long as Buyer can demonstrate (i) that such material
was installed in accordance with the National Electrical Code, NFPA guidelines, and
local codes and ordinances, and (ii) that Buyer has property maintained such material as
per the maintenance requirements related to such material. The warranty provided under
this Section 2, shall become null and void if Buyer fails to prove proper installation and
maintenance of materials provided by Boss Products, LLC.
3. The Buyer shall be responsible for remedies to problems with material and services not
provided by Boss Products, LLC.
4. Boss Products, LLC, at their sole discretion, will repair or replace defective material or
workmanship originally supplied by them. Said defective material or workmanship shall
be returned to Boss Products, LLC freight prepaid. Repaired or replaced materials will
be returned to the customer freight prepaid.
THERE ARE NO WARRANTIES EITHER EXPRESSED OR IMPLIED, INCLUDING THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, WHICH EXTEND BEYOND THE WARRANTIES CONTAINED IN THIS
DOCUMENT. BOSS PRODUCTS, LLC SHALL NOT BE LIABLE FOR ANY
INCIDENTAL, CONSEQUENTIAL, DIRECT, INDIRECT OR OTHER DAMAGES, ARISING
UNDER ANY THEORY OF LAW WHATSOEVER.

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EM-NRV NORTH AMERICAN SUPPLEMENTAL MANUAL - V2016NRV-ELE
THIS MANUAL IS A SUPPLEMENT TO THE AIRCOM
INSTALLATION, USE AND MAINTENANCE MANUAL
FOR NO RETURN VALVES.
IT HAS BEEN COMPILED BY BOSS PRODUCTS, LLC
FOR THE NORTH AMERICAN MARKET
THE INSTALLER AND END USER MUST BE FAMILIAR
WITH BOTH, THE AIRCOM MANUAL AND BOSS
PRODUCTS SUPPLIMENT

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SAFETY
ELECTRIC SHOCK HAZARD
ONLY QUALIFIED PERSONELL SHOULD INSTALL,
MAINTAIN OR WORK ON THIS EQUIPMENT!
ALWAYS PERFORM WORK WITH THE POWER OFF!
ARC FLASH HAZARD
APPROPRIATE PPE REQUIRED! FOLLOW ALL
REQUIREMENTS IN NFPA 70E
ALWAYS MAINTAIN PROPPER CONVEYING
VELOCITIES AS REQUIRED BY NFPA 652 & 654 FOR
COMBUSTIBLE DUSTS
WARNING! DO NOT SUBSTITUTE COMPONENTS
READ ALL DISCLAIMERS IN CORRESPONDING
AIRCOM MANUAL
IT IS THE INSTALLERS RESPONSIBILITY TO VERIFY
THAT THEIR INSTALLATION COMPLIES WITH
REQUIREMENTS SET BY THE AUTHORITY HAVING
JURISDICTION ALL NATIONAL, LOCAL, NEC AND
NFPA CODES AND/OR GUIDELINES.

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NFPA COMPLIANCE
NFPA 652 – STANDARD ON THE FUNDAMENTALS OF COMBUSTIBLE DUST – 2016
EDITION
 8.9.4 – Equipment Isolation
o 8.9.4 – Where an explosion hazard exists, isolation devices shall be provided to
prevent deflagration propagation between connected equipment in accordance
with NFPA 69.
o 8.9.4.4 – Isolation of Upstream Work Areas. Where a dust explosion hazard
exists, isolation devices shall be provided to prevent deflagration propagation
from equipment through upstream ductwork to the work areas in accordance with
NFPA 69.
NFPA 69 – STANDARD ON EXPLOSION PREVENTION SYSTEMS – 2014 EDITION
 CHAPTER 12 DEFLAGRATION CONTROL BY PASSIVE ISOLATION
o 12.2.2.3 FLOW ACTUATED FLAP VALVE
The EM-NRV meets all requirements of this section when installed with all options and
conveying ductwork per 12.2.3.4.6
KEY POINTS
 12.2.3.4.2 Requires a locking mechanism which is provided standard.
 12.2.3.4.3 Requires an Inspection door which is provided standard.
 12.2.3.4.4 Requires an immediate, automatic shutdown of the protected process.
Accomplished with O-EM-NRV-MS Microswitch which is an available option that mounts
on the NRV locking mechanism and sends a signal upon an event.
 12.2.3.4.5 and 12.2.3.4.5.1 requires a continuous signal to ensure valve operation is not
compromised by the accumulation of a dust layer on the bottom interior of the valve and
requires an immediate, automatic and orderly shutdown of the protected process.
Accomplished with O-EM-NRV-DLS capacitive style Dust Level Sensor (DLS) which
sends a signal when 0.15”-0.20” of dust has accumulated. The DLS is located in the
airstream and requires an intrinsically safe barrier.
 12.2.3.5 Requires System Certification by a recognized testing organization. A.10.4.2.1
allows for European CEN ATEX certification being acceptable.

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EM-NRV NORTH AMERICAN SUPPLEMENTAL MANUAL - V2016NRV-ELE
ECOMAXX EM-NRV
NO RETURN VALVE SPECIFICATIONS
STANDARD FEATURES (ALL SIZES)
Heavy Duty Welded Steel Construction * Epoxy Powder Coated Safety Red Finish
Flanged Inlet and Outlet with Co-Flanges * Grounding Lugs * Locking Mechanism(s)
ATEX Certification
 Sizes 7” Thru 28”
o Certified ATEX EN16447 & EN15089
 Certified: CE0477 II D
 Certified N. EUT 14 ATEX 1954
o Application Class: ST3 (Kst max 400 bar m/s)
o P
red Max: 0.5 Bar
o Maximum Velocity: 5905 FPM
o Maximum Pressure: 200.93” H2O / 14.76” Hg
o Process Temperature Range: -4° F to 140° F (- 20° C to +60° C)
o Pressure Drop @ 5905 FPM (Sizes 7” - 18”): 0.25” H2O
o Pressure Drop @ 5905 FPM (Sizes 20” - 28”): 0.40” H2O
o Minimum Distance (Sizes 7”- 16”) From Collector: 2 meters / 6.56 feet
o Maximum Distance (Sizes 7”-16”) From Collector: 4 meters / 13.12 feet
o Minimum Distance (Sizes 18”- 28”) From Collector: 3 meters / 9.84 feet
o Maximum Distance (Sizes 18”-28”) From Collector: 6 meters / 19.69 feet
o Horizontal Installation Only
 Sizes 32” Thru 40”
o Certified ATEX EN15089
 Certified: CE2049 II D
 Certified N. EUM1 12 ATEX 0714
o Application Class: ST2 (Kst max 299 bar m/s)
o P
red Max: 0.25 Bar
o Maximum Velocity: 5905 FPM
o Maximum Pressure: 100.47” H2O / 7.38” Hg
o Process Temperature Range: -4° F to 140° F (- 20° C to +60° C)
o Pressure Drop @ 5905 FPM: 0.63” H2O
o Minimum Distance From Collector: 3 meters / 9.84 feet
o Maximum Distance From Collector: 6 meters / 19.69 feet
o Horizontal Installation Only

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*NFPA 69-2014 (A.12.2.3.4.6) STATES: The minimum design pressure for the ductwork is typically 2 x P
red
because
the pressure wave reflects off the closed valve. Depending on the distance between the flap valve and the enclosure,
pressure piling could further increase the expected peak pressure.
** See Minimum/Maximum Distance Specifications (Page 6 of This Manual)
DIMENSIONS FOR SIZES 7” THRU 28”
Model ᴓ A B C D E F G H ILBS
EM-NRV07 7.09” / 180mm 14.1 13.3 21.6 13.3 11.8 7 6.6 - - 45
EM-NRV08 7.87” / 200mm 14.1 13.3 21.6 13.3 11.8 7 6.6 - - 45
EM-NRV10 9.84” / 250mm 16.1 15.3 23.6 15.3 12.7 8 7.6 - - 56
EM-NRV12 11.81” / 300mm 18.1 17.3 26.3 23.6 13.7 9 8.6 - 4.5 84
EM-NRV14 13.78” / 350mm 20 19.2 28.3 25.5 14.7 10 9.6 - 4.5 100
EM-NRV16 15.75” / 400mm 22 23.2 30.3 29.5 15.7 11 10.6 13.7 6.4 120
EM-NRV18 17.72” / 450mm 24 25.1 32.2 33.2 16.7 12 11.6 15.7 8.4 150
EM-NRV20 19.69” / 500mm 25.9 27.1 34.2 38.7 17.7 12.9 12.5 18.1 12.4 177
EM-NRV22 21.65” / 550mm 27.9 29.1 36.2 37.4 18.7 13.9 13.5 19.6 8.4 221
EM-NRV24 23.62” / 600mm 29.9 31.1 38.1 41.1 19.6 14.9 14.5 21.6 10.4 254
EM-NRV26 25.59” / 650mm 31.8 33 40.1 45 20.6 15.9 15.5 23.8 12.4 276
EM-NRV28 27.56” / 700mm 33.8 35 42.1 47 21.6 16.9 16.5 25.5 12.4 298
DUCTWORKOFSUFFICIENT
STRENGTHTOWITHSTANDTHE
PEAKEXPLOSIONPRESSURE*
DUSTCOLLECTOR
DISTANCE**
EM‐NRV
NORETURNVALVE

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DIMENSIONS FOR SIZES 32” THRU 40”
Model ᴓ A B C D E F G H ILBS
EM-NRV32 31.49” / 800mm 38.5 40.1 52.3 56.4 25.9 25.9 18.8 28.1 14.1 728
EM-NRV36 35.43” / 900mm 42.5 44.4 56.2 60.4 27.9 27.9 20.8 27.9 14.1 860
EM-NRV40 39.37” / 1000mm 46.4 48 60.2 64.3 29.9 29.9 22.8 35.8 14.1 999
FLANGE AND CO-FLANGE DIMENSIONS
 I.D. 1 Dimensions are the inner diameter
dimensions of the flanges installed on
EM-NRV
 I.D. 2 Dimensions are the inner diameter
dimensions of the co-flanges provided with
EM-NRV
Model I.D. 1 I.D. 2 B.C. O.D. Holes Thickness
EB-FL07 7.20” 7.125” 8.38” 9.56” 5 @ 0.4” 0.15”
EB-FL08 7.99” 8.125” 9.17” 10.35” 6 @ 0.4” 0.15”
EB-FL10 9.96” 10.125” 11.14” 12.32” 6 @ 0.4” 0.15”
EB-FL12 11.93” 12.125” 13.30” 14.67” 6 @ 0.4” 0.15”
EB-FL14 13.90” 14.125” 15.27” 16.64” 8 @ 0.4” 0.15”
EB-FL16 15.87” 16.125” 17.24” 18.61” 8 @ 0.4” 0.15”
EB-FL18 17.84” 18.125” 19.21” 20.58” 10 @ 0.4” 0.15”
EB-FL20 19.81” 20.125” 21.18” 22.55” 10 @ 0.4” 0.15”
EB-FL22 21.77” 22.125” 23.14” 24.51” 12 @ 0.5” 0.15”
EB-FL24 23.73” 24.125” 25.30” 26.87” 14 @ 0.5” 0.23”
EB-FL26 25.71” 26.125” 27.28” 28.85” 14 @ 0.5” 0.23”
EB-FL28 27.68” 28.125” 29.25” 30.82” 14 @ 0.5” 0.23”
EB-FL32 31.61” 32.125” 33.18” 34.75” 14 @ 0.5”0.23”
EB-FL36 35.55” 36.125” 37.12” 38.69” 16 @ 0.5”0.23”
EB-FL40 39.49” 40.125” 41.06” 42.63” 18 @ 0.5”0.23”

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ECOMAXX O-EM-NRV-CP02
INTRINSIC PANEL SPECIFICATIONS
4 Models Available*
o Model: O-EM-NRV-CP02
(1 NRV)
o Model: O-EM-NRV-CP02X2
(Up-to 2 NRVs)
o Model: O-EM-NRV-CP02X3
(Up-to 3 NRVs)
o Model: O-EM-NRV-CP02X4
(Up-to 4 NRVs)
*Larger Panels are available on request
 All Models Feature the following:
o NEMA 4 Enclosure
o Status lights (Green = System OK / RED = System Trouble),
o Terminals for Microswitch
o Intrinsic circuit with barrier and physical separation
o Drawings
o 120VAC Input Power
o UL S1861* Intrinsically Safe Label
Required Sensors
 O-EM-NRV-MS: Microswitch for No Return Valve. (Shipped Loose)
 O-EM-NRV-DLS: Dust Level Sensor (Capacitive) to ensure the NRV is not compromised
by a layer of dust accumulation. (Shipped Loose)
ON REQUEST O-EM-NRV-CP02 COMPONENTS MAY BE
BUILT INTO AN ECOBOSS ENERGY CONTROL PANEL

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RECEIVING THE ECOMAXX EM-NRV
 The EcoMAXX EM-NRV typically ships shrink-wrapped and strapped on a wooden
pallet. Customer must inspect the equipment for damage upon receipt. If damage is
present, receiver must note damaged on the shipping documents in order to file a claim.
 All Counterweights are shipped inside the No Return Valve. NOTE: Sizes 7, 8 & 10 do
not have counterweights. Sizes 12 thru 28 have 1 counter weight. Sizes 32” + Utilize 2
counterweights with patented breaking elements.
 Dependent on the size of the No Return valve, the O-EM-NRV-CP02 control panel, O-
EM-NRV-MS Microswitch and O-EM-NRV-DLS are shipped in a cardboard box placed
on top of the valve or inside it.*
* Control Panel, Microswitch and dust level sensor are required options for NFPA compliance and are ordered
separately. Dependent on order, any combination of these may be shipped.
O-EM-NRV-CP02, Intrinsic Panel with NFPA Compliant Options
Contains O-EM-NRV-DLS (Dust Level Sensor), O-EM-NRV-MS (Microswitch) and Wiring Diagram

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ASSEMBLY INSTRUCTIONS
(SIZES 7”-10”)
No Return Valve Sizes 7”-10” have a locking arm without a counterweight
and come assembled as shown in the above picture.
For mounting the microswitch and dust level sensor, refer to pages 18-22.

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ASSEMBLY INSTRUCTIONS
(SIZES 12”-28”)
Counter Weight
Locking
Mechanism
Manual with
Metric Allen
Wrench

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For mounting the microswitch and dust level sensor, refer to pages 18-22.
Replace Bolt on
Counter Weight
Mounting Shaft
Remove Bolt
on Counter
Weight
Mounting
Shaft Using
Provided
Allen
Wrench.
Position Counter
Weight in the
Locked Position
in the Locking
Mechanism.
Slide Counter Weight
onto Shaft as Shown
Tighten
the Two
Bolts to
Clamp
Counter
Weight in
Place.

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ASSEMBLY INSTRUCTIONS
(SIZES 32”+)
Manual with Metric Allen Wrenches
Locking Mechanism
Counter Weight Arm
(Lower Section)
Breaking Elements
Counter Weight (Upper Section)

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Counter Weight Arm (Lower Section)
**NOTE** Lower Section may be Installed at
Factory and This Step May not be Necessary.
Slide Arm until it Fits over the Key
Stop. Secure Arm in Place by
Tightening the Set Screw. **NOTE**
You Will Need to Adjust Arm Once
Locking Mechanism is In Place.
Remove Bolt and
Washer and Slide
Arm on to Shaft

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Locking Mechanism, Counter Weight,
and Breaking Element
1. Install Locking Mechanism
onto mounting bracket of the
EcoMAXX NRV.
2. Ensure handle is
centered in the locking
mechanism. If incorrectly
installed, handle may rub
or stick preventing the
counter weight from locking
in place during an event.
5. Insert safety pin to keep
counter weight in place.
4. Remove Bolt and Washer (if
arm was installed at factory) and
slide counter weight onto shaft
3. Ensure Set Screw has
Been Tightened Down.

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6. Insert bolt and washer
to secure counterweight.
7. With Safety pin in
place, remove breaking
element bolts.
8. Mount breaking
element to
counter weight
and tighten bolts.
Do not over-
tighten. Bolts
need to be snug.
Over-tightening
may damage
breaking element.
IMPORTANT!! Be sure to remove safety
pin from counterweight! Failure to do so
will cause the EcoMAXX No Return Valve
to not close fast enough during an event.

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EM-NRV NORTH AMERICAN SUPPLEMENTAL MANUAL - V2016NRV-ELE
O-EM-NRV-MS (Microswitch)
with Mounting Bolts
1. Remove screw
and rotate lever to
correct position
2. Line up
arrows
3. Insert
and tighten
Screw

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Mounting O-EM-NRV-MS (Microswitch) to
EcoMAXX No Return Valve
1. Mount microswitch to
locking mechanism using
provided bolts
2. Rotate counterweight arm into the locked position. Ensure arm is
centered in the locking mechanism to avoid obstruction or rubbing. If not
centered, the arm may not fully close or lock during an event.
**NOTE** Do Not Forget to Unlock Counter Weight Prior to Initial Start-up.
The “System Fault” Light Will Turn On and System Will Not Start.

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Wiring O-EM-NRV-MS (Microswitch) to
O-EM-NRV-CP02 Intrinsic Panel
1. When looking at the wiring
diagram you will notice only the
black and grey wires are used for
the microswitch connection.
2. Connect the black wire to the
terminal labeled 1.
3. Connect the grey wire to the terminal labeled 2