Common Venting for Brute Document 1427-BW · m ateri l: tolerances are: rep oduc, t a nsf th m ts, se decimals .xxx .1 s disc los e t oth rs fma nuac i g a y fractio ns.03 decim als

$Page 1: Common Venting for Brute Document 1427-BW · m ateri l: tolerances are: rep oduc, t a nsf th m ts, se decimals .xxx .1 s disc los e t oth rs fma nuac i g a y fractio ns.03 decim als$
800.900.9276 • Fax 800.559.1583 (Customer Service, Service Advisors)20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 (Applications Engineering)

1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130www.Laars.com

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ContentsSECTION 1 General Information .............. 11.A Introduction ...................................... 11.B Kit Includes ...................................... 2SECTION 2 Vent Installation .................... 22.A Vent Materials .................................. 22.B Required Components ..................... 32.C Sizing a Common Vent System ....... 42.D Example System Sizing ................... 52.E Installation ........................................ 6SECTION 3 Maintenance ......................... 6SECTION 4 Final Installation Checklist .... 7SECTION 5 Maintenance Checklist ......... 7

200 Lafayette St.Middleville, MI 49333Warranty: (800) 531-2111

www.BradfordWhite.comLitho in U.S.A. © Bradford White 1811 Document 1427-BW

WARNING: Carbon Monoxide Hazard

A Non-Return Valve must be installed onto each unit.

Both the exhaust and air intake must be directly vented to the outside of the building. Using room air for a common vent system is not permitted.

All units in the common vent system must be the same model / size.

All installations must be made in accordance with the requirements of the relevant local utility or other authorities having jurisdiction, or in the absence of local or state code, the U.S. National Fuel Gas Code ANSI Z223.1/NFPA 54-latest edition, and in Canada, in accordance with the Natural Gas and Propane Installation Code CSA B149.1 – latest edition.

Carbon monoxide detectors, installed on the floor level where the gas appliance is to be located, are required by law in some jurisdictions, and are strongly recommended in all installations.

Improper installation of a venting system may lead to personal injury or death.

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BY LAARS HEATING SYSTEMS CO. DWG

THIS DOCUMENT AND THE INFORMATION CONTAINED HEREIN AREPROPRIETARY TO LAARS HEATING SYSTEMS CO. AND SHALL NOT BE REPRODUCED, TRANSFERRED TO OTHER DOCUMENTS, USED ORDISCLOSED TO OTHERS FOR MANUFACTURING OR ANY OTHER PURPOSE EXCEPT AS SPECIFICALLY AUTHORIZED IN WRITING

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SECTION 1 General Information 1.A IntroductionBradford White offers a common venting solution for some models of the Brute product line of boilers and volume water heaters. This instruction manual provides information necessary for the safe setup and maintenance of such a system. Read it carefully before beginning a common venting installation.

The following Brute models are approved for common venting: BNTH080, BNTH105, BNTH150, BNTV150, BNTV199, BNTH210, BNTH285, BNTV285, BNTH399, BNTV399, BNTH500, BNTV500. Up to 8 Brute boilers or volume water heaters of a given model can be common vented.

Independently tested and accepted by CSA to ANSI Z21.13 / CSA 4.9



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1.B Kit IncludesThe Bradford White Non-Return Valve Kit includes the following components:

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Included with NRV kit

CA016400 only

Kit Number Description CA016400 Non-Return Valve Kit, Neotherm 80 - 105 CA016401 Non-Return Valve Kit, Neotherm 150 - 210 CA016402 Non-Return Valve Kit, Neotherm 285 - 500

Table 1: Non-Return Valve Kit Part Numbers

Item

Number Part Number Venting Component CA016400 CA016401 CA016402

1

D2020800 - - Appliance Adapter for Coupler Style Flue Collar, 2”

- D2020801 - Appliance Adapter for Coupler Style Flue Collar, 3”

- - D2020802 Appliance Adapter for Coupler Style Flue Collar, 4”

2 D2020900 - - Connector Ring, 2” D2020901 D2020901 - Connector Ring, 3”

- - D2020902 Connector Ring, 4”

3 D2021000 D2021000 - Non-Return Valve (NRV), 3” Inlet, 4” Outlet - - D2021001 Non-Return Valve (NRV), 4” Inlet, 4” Outlet

4 D2021100 - - Centric Increaser, 2” to 3” Table 2: Non-Return Valve Kit Components

Vent Materials Centrotherm InnoFlue polypropylene venting can be used on both the exhaust and air intake, and must be used on the exhaust. PVC, CPVC, or ABS material may be used on the air intake only. All joints on both the exhaust and air intake must be properly sealed.

Item

Number Mfg. Part Number

Venting Component

1 ISAGLxxxx Appliance Adapter for Coupler Style Flue Collar 2 IANSxx Connector Ring 3 - Non-Return Valve (NRV) 4 ISVLxxx Vent Length 5 ISELxxxx 87o Elbow 6 ISBTxxxxxx Branch Tee 7 ISHDTxx Horizontal Drain Tee

⚠Warning Only Centrotherm InnoFlue is certified by CSA for use on the exhaust venting of Neotherm common vent systems. Do not mix components from different manufacturers in either the exhaust or intake venting.

SECTION 2 Vent Installation

2.A Vent MaterialsCentrotherm InnoFlue polypropylene venting can be used on both the exhaust and air intake, and must be used on the exhaust. PVC, CPVC, or ABS material may be used on the air intake only. All joints on both the exhaust and air intake must be properly sealed.

Air Intake

Exhaust

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Only Centrotherm InnoFlue is allowed by CSA for use on the exhaust venting of Brute common vent

systems. Do not mix components from different manufacturers in either

the exhaust or intake venting.

CA016403 Only

CA016403 CA016404 CA016405

Item

# Mfg.

Part # Venting

Component 1 ISAGLxxxx1 Appliance Adapter for Coupler

Style Flue Collar 2 IANSxx Connector Ring 3 N/A2 Non-Return Valve (NRV) 4 ISVLxxx Vent Length 5 ISELxxxx 87o Elbow 6 ISBTxxxxxx Branch Tee 7 ISHDTxx Horizontal Drain Tee 8 IASJBVS Universal Ball Valve Siphon 9 ISTCxx Tee Cap

Table 3: Venting Components 1. “xx”, “xxx”, etc., refers to variations in nominal size. See Centrotherm’s catalog for a particular application. 2. Non-Return Valve must be purchased from Laars.

Changes to Bradford White Manual Only

Kit Number Description CA016403 Non-Return Valve Kit, Brute 80 - 105 CA016404 Non-Return Valve Kit, Brute 150 - 210 CA016405 Non-Return Valve Kit, Brute 285 - 500





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2.B Required ComponentsAt minimum, the following components are required to install a common vent system.

Exhaust

Air Intake (if using

Centrotherm InnoFlue)

Item

# Mfg.

Part # Venting

Component 1 ISAGLxxxx1 Appliance Adapter for Coupler

Style Flue Collar 2 IANSxx Connector Ring 3 N/A2 Non-Return Valve (NRV) 4 ISVLxxx Vent Length 5 ISELxxxx 87o Elbow 6 ISBTxxxxxx Branch Tee 7 ISHDTxx Horizontal Drain Tee 8 IASJBVS Universal Ball Valve Siphon 9 ISTCxx Tee Cap

Table 3: Venting Components 1. “xx”, “xxx”, etc., refers to variations in nominal size. See Centrotherm’s catalog for a particular application. 2. Non-Return Valve must be purchased from Laars.

Changes to Bradford White Manual Only

Kit Number Description CA016403 Non-Return Valve Kit, Brute 80 - 105 CA016404 Non-Return Valve Kit, Brute 150 - 210 CA016405 Non-Return Valve Kit, Brute 285 - 500


2. Non-Return Valve must be purchased from Bradford White




pg 4 of 7

1

Item Number

Venting Component

1 Appliance Adapter for Coupler Style Flue Collar 2 Connector Ring 3 Non-Return Valve (NRV) 4 Centric Increaser, 2” to 3”

Table 2: Non-Return Valve Kit Components

Item

Number Venting Component

1 Appliance Adapter for Coupler Style Flue Collar 2 Connector Ring 3 Non-Return Valve (NRV) 4 Vent Length 5 87o Elbow 6 Branch Tee 7 Horizontal Drain Tee 8 Universal Ball Valve Siphon 9 Tee Cap

Table 3: Venting Components

Vent Diameter 4” 6” 8” 10” 12” 87o Elbow 5 5 8 10 10 45o Elbow 2 2 3 5 5 Table X: Equivalent Vent Length of Elbows

Number of Units

Total Input

(Btu/h)

Max. Equivalent Vent Length (ft)

5" Trunk 6" Trunk 2 160,000 100 100 3 240,000 100 100 4 320,000 100 100 5 400,000 100 100 6 480,000 89 100 7 560,000 66 100 8 640,000 51 100

Table 4: Max Equiv Vent Length for BNTH080

Vents can be installed in a vertical or horizontal orientation. The maximum allowable equivalent lengths for the common vent system (air intake and exhaust each) are listed by boiler model, in tables 4-11 below. Keep in mind that this is the equivalent vent length, and that elbows create additional pressure drop which must be accounted for. Use an equivalent length of 8 feet for 87º or 90º elbows and 3 feet for 45º elbows. Note that the branch tees directly above the boilers, as well as the individual boiler vent lengths feeding into the branch tees do not need to be included when sizing a common vent system. However, efforts must be made to minimize the lengths of these portions of the vent system. They should not exceed 5 feet of vent length above each boiler, and 3 feet of vent length between each boiler unless absolutely necessary.

1. To size a common vent system, first determine the total equivalent length of venting needed to reach the desired termination point.

2. Next, find the relevant maximum length table for the model that is being installed, and using the previously determined equivalent vent length, as well as the number of units in the installation, select a suitable trunk diameter for the vent.

2.C Sizing a Common Vent System

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Number of Units

Total Input

(Btu/h)


5" Trunk 6" Trunk 2 210,000 100 100 3 315,000 100 100 4 420,000 100 100 5 525,000 74 100 6 630,000 52 100 7 735,000 39 100 8 840,000 30 100


Number of Units

Total Input

(Btu/h)


5" Trunk 6" Trunk 8" Trunk

2 300,000 100 100 100 3 450,000 96 100 100 4 600,000 55 100 100 5 750,000 36 100 100 6 900,000 25 95 100 7 1,050,000 N/A 70 100 8 1,200,000 N/A 54 100

Table 6: Max Equiv Vent Length for BNTH150 & BNTV150

Number of Units

Total Input

(Btu/h)


6" Trunk 8" Trunk 2 398,000 100 100 3 597,000 100 100 4 796,000 100 100 5 995,000 74 100 6 1,194,000 52 100 7 1,393,000 38 100 8 1,592,000 29 84

Table 7: Max Equiv Vent Length for BNTV199

2

Number of Units

Total Input

(Btu/h)


5" Trunk 6" Trunk 2 210,000 100 100 3 315,000 100 100 4 420,000 100 100 5 525,000 74 100 6 630,000 52 100 7 735,000 39 100 8 840,000 30 100


Number of Units

Total Input

(Btu/h)



2 300,000 100 100 100 3 450,000 96 100 100 4 600,000 55 100 100 5 750,000 36 100 100 6 900,000 25 95 100 7 1,050,000 N/A 70 100 8 1,200,000 N/A 54 100


Number of Units

Total Input

(Btu/h)


6" Trunk 8" Trunk 2 398,000 100 100 3 597,000 100 100 4 796,000 100 100 5 995,000 74 100 6 1,194,000 52 100 7 1,393,000 38 100 8 1,592,000 29 84


2

Number of Units

Total Input

(Btu/h)


5" Trunk 6" Trunk 2 210,000 100 100 3 315,000 100 100 4 420,000 100 100 5 525,000 74 100 6 630,000 52 100 7 735,000 39 100 8 840,000 30 100


Number of Units

Total Input

(Btu/h)



2 300,000 100 100 100 3 450,000 96 100 100 4 600,000 55 100 100 5 750,000 36 100 100 6 900,000 25 95 100 7 1,050,000 N/A 70 100 8 1,200,000 N/A 54 100


Number of Units

Total Input

(Btu/h)


6" Trunk 8" Trunk 2 398,000 100 100 3 597,000 100 100 4 796,000 100 100 5 995,000 74 100 6 1,194,000 52 100 7 1,393,000 38 100 8 1,592,000 29 84





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Number of Units

Total Input

(Btu/h)


6" Trunk 8" Trunk 2 420,000 100 100 3 630,000 100 100 4 840,000 100 100 5 1,050,000 65 100 6 1,260,000 46 100 7 1,470,000 34 97 8 1,680,000 26 75


Number of Units

Total Input

(Btu/h)



2 570,000 100 100 100 3 855,000 86 100 100 4 1,140,000 49 100 100 5 1,425,000 32 92 100 6 1,710,000 23 64 100 7 1,995,000 N/A 48 100 8 2,280,000 N/A 37 100


Number of Units

Total Input

(Btu/h)


8" Trunk 10" Trunk

12" Trunk

2 798,000 100 100 100 3 1,197,000 95 100 100 4 1,596,000 54 100 100 5 1,995,000 35 100 100 6 2,394,000 25 87 100 7 2,793,000 N/A 64 100 8 3,192,000 N/A 49 100


3

Number of Units

Total Input

(Btu/h)


6" Trunk 8" Trunk 2 420,000 100 100 3 630,000 100 100 4 840,000 100 100 5 1,050,000 65 100 6 1,260,000 46 100 7 1,470,000 34 97 8 1,680,000 26 75


Number of Units

Total Input

(Btu/h)



2 570,000 100 100 100 3 855,000 86 100 100 4 1,140,000 49 100 100 5 1,425,000 32 92 100 6 1,710,000 23 64 100 7 1,995,000 N/A 48 100 8 2,280,000 N/A 37 100


Number of Units

Total Input

(Btu/h)


8" Trunk 10" Trunk

12" Trunk

2 798,000 100 100 100 3 1,197,000 95 100 100 4 1,596,000 54 100 100 5 1,995,000 35 100 100 6 2,394,000 25 87 100 7 2,793,000 N/A 64 100 8 3,192,000 N/A 49 100


2.D Example System Sizing

Insert Screen

Insert Screen

3' Max Not Counted Towards Total Length

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1/4" per foot Min.

5' Max.

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THIS DOCUMENT AND THE INFORMATION CONTAINED HEREIN AREPROPRIETARY TO LAARS HEATING SYSTEMS CO. AND SHALL NOT BE REPRODUCED, TRANSFERRED TO OTHER DOCUMENTS, USED ORDISCLOSED TO OTHERS FOR MANUFACTURING OR ANY OTHER PURPOSE EXCEPT AS SPECIFICALLY AUTHORIZED IN WRITING

SCALE: NONE

In the example system above, 6 BNTH210 modulating boilers are to be installed with a common vent. 1. Assuming equivalent vent lengths of 8 feet for an 87º elbow and 3 feet for a 45º elbow, the total equivalent

length is 3+45+8+8+3=67 feet.

2. Using table 8, an 8-inch diameter trunk size is selected.4

Number of Units

Total Input

(Btu/h)


8" Trunk 10" Trunk

12" Trunk

2 1,000,000 73 100 100 3 1,500,000 36 100 100 4 2,000,000 20 72 100 5 2,500,000 N/A 47 100 6 3,000,000 N/A 33 100 7 3,500,000 N/A 24 79 8 4,000,000 N/A N/A 61


3

Number of Units

Total Input

(Btu/h)


6" Trunk 8" Trunk 2 420,000 100 100 3 630,000 100 100 4 840,000 100 100 5 1,050,000 65 100 6 1,260,000 46 100 7 1,470,000 34 97 8 1,680,000 26 75


Number of Units

Total Input

(Btu/h)



2 570,000 100 100 100 3 855,000 86 100 100 4 1,140,000 49 100 100 5 1,425,000 32 92 100 6 1,710,000 23 64 100 7 1,995,000 N/A 48 100 8 2,280,000 N/A 37 100


Number of Units

Total Input

(Btu/h)


8" Trunk 10" Trunk

12" Trunk

2 798,000 100 100 100 3 1,197,000 95 100 100 4 1,596,000 54 100 100 5 1,995,000 35 100 100 6 2,394,000 25 87 100 7 2,793,000 N/A 64 100 8 3,192,000 N/A 49 100





pg 6 of 7

2.E InstallationAll units in a common vent system must be properly installed according to the Brute Installation and Operation Manual as well as all applicable building codes.

All venting must be properly assembled per the venting manufacturer’s instructions. For Centrotherm InnoFlue, reference the InnoFlue Installation Guide available on Centrotherm’s website: http://www.centrotherm.us.com/Literature.aspx. Additionally:1. Only the materials listed in section 2.A may be used for a common vent system. Centrotherm InnoFlue

polypropylene vent material must be used on the exhaust. If PVC, CPVC, or ABS material is to be used on the air intake, the nominal trunk diameter must match that of the nominal exhaust trunk diameter. All joints must be properly sealed.

2. A Non-Return Valve must be properly installed on each unit in the correct orientation (vertically).3. Both the exhaust and air intake must be directly vented to the outside of the building. Using room air for a

common vent system is not permitted.4. All vent piping must be properly supported. Do not allow the units to support the weight of the venting.5. Horizontal portions of the exhaust vent must be sloped at least ¼ inch per foot back toward the boiler to allow

condensate to drain out of the vent. Consult local codes for the proper disposal method for the condensate.

CAUTIONCondensate is mildy acidic (pH = 5), and may harm some floor drains and/or pipes, particularly those that are

metal. Ensure that the drain, drainpipe and anything that will come in contact with the condensate can withstand the acidity, or neutralize the condensate before disposal.

6. Screens with mesh size no greater than ½ inch must be installed on each termination (air intake & exhaust) to prevent debris from entering the vent system.

7. Follow all local and national codes in regards to proper vent termination clearances. Side wall exhaust vent terminations must be at least 12 inches above the top of the air intake terminations and be horizontally separated by at least 84 inches.

Once the vent has been installed, power on each unit in the common vent system. Confirm normal operation and verify that there is no exhaust or condensate leakage from any connection.

SECTION 3 MaintenancePerform all regular maintenance required by each unit as stated in the Installation and Operation Manual. Additionally, perform the following steps at least once per year:

1. Visually inspect each Non-Return Valve to make sure that both the valve and ball check siphon are free from debris and operating correctly. If debris is noticed inside either, remove the Non-Return Valve from the vent system to clean. Once the valve has been cleaned, and correct operation re-established, re-assemble the valve into the vent system.

2. Check the air intake and exhaust vent terminations and verify that they are both free from debris or any obstructions.

3. Inspect the exhaust and air intake vents to ensure that all joints are sealed properly. If any joints need to be resealed, completely remove any existing sealing material, clean the joint, and reassemble.

Replace the Non-Return Valve with a new one when replacing the boiler or water heater.




pg 7 of 7

Notes:



SECTION 4 Final Installation Checklist• Non-Return Valve (NRV) properly installed on each unit• Venting properly supported• Horizontal portions of the exhaust vent sloped at least ¼ inch per foot back to boiler• Condensate drain installed• Screen installed on both air intake and exhaust termination• All units ran successfully with no exhaust or condensate leakage from any vent connection• Save these instructions for future reference

SECTION 5 Maintenance Checklist• All Non-Return Valves (NRVs) clear of debris• Air intake & Exhaust terminations free of debris & obstructions• All joints are sealed properly



Document 1427-BWCommon Venting for BruteH2

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Documents

Common Venting for Brute Document 1427-BW · m ateri l: tolerances are: rep oduc, t a nsf th m ts, se decimals .xxx .1 s disc los e t oth rs fma nuac i g a y fractio ns.03 decim als