Bradford-White BJVS User Manual

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Installation and Operation Instructions

Document 1242

 

 

Installation and Operation

Instructions for

BRUTE MINI

Residential

Gas-Fired

Hydronic Boilers

Models BJVS, BJVT

Sizes 50-225

U.S. Patent No. 1,609,692

Canada Patent No. 383,318

Vent damper is optional in some provinces of Canada. These instructions are to be stored in the packet provided on the boiler.

FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician, qualified in hot water boiler installation and maintenance. Improper installation and/or operation could create carbon monoxide gas in flue gases which could cause serious injury, property damage, or death. Improper installation and/or operation will void the warranty.

WARNING

If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

WHAT TO DO IF YOU SMELL GAS

Do not try to light any appliance.

Do not touch any electrical switch; do not use any phone in your building.

Immediately call your gas supplier from a nearby phone. Follow the gas supplier's instructions.

If you cannot reach your gas supplier, call the fire department.

Installation and service must be performed by a qualified installer, service agency, or gas supplier.

AVERTISSEMENTAssurez-vousde bien suivres les instructions données dans cette notice pour réduire au minimum le risque d’incendie ou d’explosion ou pour éviter tout dommage matériel, toute blessure ou la mort.

Ne pas entreposer ni utiliser d’essence ni d’autres vapeurs ou liquides inflammables dans le voisinage de cet appareil ou de tout autre appareil.

QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:

Ne pas tenter d’allumer d’appareils.

Ne touchez à aucun interrupteur. Ne pas vous servir des téléphones dansle bâtiment où vous vous trouvez.

Appelez immédiatement votre fournisseur de gaz depuis un voisin. Suivez les instructions du fournisseur.

Si vous ne pouvez rejoindre le fournisseur de gaz, appelez le sservice des incendies.

L’installation et l’entretien doivent être assurés par un installateur ou un service d’entretien qualifié ou par le fournisseur de gaz.

H2343000-

238-49219-00AREV 4/11

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TABLE OF CONTENTS

SECTION 1.

 

General Information

 

1.1

Introduction...................................................

3

1.2

Warranty .......................................................

3

1.3

Codes and Standards ...................................

3

1.4

Technical Assistance....................................

3

1.5

Materials Installer Must Provide ...................

3

1.5.1

Materials for All Installations .........................

3

1.5.2

Materials for Most Installations .....................

3

1.5.3

Diagnostic Tools ...........................................

4

1.6

Specifications ...............................................

4

1.6.1

General Specifications .................................

4

1.6.2

Dimensions...................................................

4

SECTION 2.

 

Installation Instructions

 

2.1

Introduction...................................................

4

2.2

Field Assembly .............................................

5

2.3.1

Clearances ...................................................

6

2.3.2

Flooring ........................................................

6

SECTION 3.

 

Venting

 

3.1

Combustion Air Supply .................................

7

3.2

Exhaust Venting ...........................................

7

3.3Vent Pipe Sizing and General

 

Installation ....................................................

8

3.4

Common Venting Systems ...........................

8

3.4.1

Venting Multiple Appliances .........................

8

3.4.2Inspection of Commonly Vented

 

Appliances ....................................................

9

SECTION 4.

 

Gas Connections

 

4.1

Gas Supply and Piping ...............................

10

4.2

Special Precautions for LP Gas..................

11

SECTION 5.

 

Water Connections

 

5.1

Water Piping ...............................................

12

5.1.1

By-passPiping ...........................................

12

5.2

Alternate Auto-BypassOperation ...............

12

5.3

Flow Requirements ....................................

15

5.4

Chilled Water Systems ...............................

16

5.5

Oxygen Permeable Systems ......................

16

5.6

Anti-Freeze .................................................

16

SECTION 6.

 

Electrical

 

6.1

General Information ....................................

16

6.2

Main Power ................................................

16

6.3

Grounding...................................................

21

6.4

Auxiliary Devices ........................................

21

6.4.1

Flow Switch ................................................

21

6.4.2

Heat Anticipator ..........................................

21

SECTION 7.

 

Operating Instructions

 

7.1

Normal Operation .......................................

21

7.2

Start-up .......................................................

22

7.2.1

Filling the System .......................................

22

7.2.2

Boiler Start-up ............................................

22

7.3

Lighting and Shutdown Procedures ...........

23

7.3.1

Lighting the Boiler .......................................

23

7.3.2

Shutdown ...................................................

24

7.3.2.1 Main Burner Shutdown (BJVT Only)............

24

7.3.2.2 Complete Shutdown ....................................

24

7.4

High Altitude Burner

 

 

Air Shutter Adjustment................................

24

SECTION 8.

 

Maintenance

 

8.1

General Maintenance .................................

25

8.2Boiler Components and Their

 

Operation....................................................

26

SECTION 9.

 

Troubleshooting

 

9.1

General Boiler Troubleshooting ..................

27

9.2

Troubleshooting Guide ...............................

28

9.3Troubleshooting Honeywell S8600

 

Intermittent Pilot System.............................

29

9.4

Electrical Troubleshooting ..........................

30

SECTION 10.

 

Glossary

 

10.1

Glossary of Terms ......................................

30

SECTION 11.

 

Replacement Parts

 

11.1

Ordering Information ..................................

31

11.2

Parts List ....................................................

31

11.3

Exploded View............................................

34

Brute Mini Hydronic Boiler

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SECTION 1.

General Information

1.1 Introduction

This manual provides information necessary for the installation, operation, and maintenance of Model BJV copper tube hydronic boilers.

All application and installation procedures should be reviewed completely before proceeding with the installation. Consult the factory, or local factory representative, with any problems or questions regarding this equipment. Experience has shown that most operating problems are caused by improper installation.

These boilers are available in two configurations; the BJVT has a thermocouple/continuous burning pilot, and the BJVS has an electronic intermittent ignition device (I.I.D.). Look for the model designation on the rating plate, which can be found on top of the boiler in the right rear corner.

The automatic vent dampers are standard on all U.S. and Canadian models. The side wall power venters can be used on both BJVS and BJVT models. Special instructions for their installation are included in the vent damper and power venter package. Read them carefully before installation.

1.2 Warranty

Model BJV boilers are covered by a limited warranty. The owner should fill out the warranty registration card and return it to .

All warranty claims must be made to an authorized representative or directly to the factory. Claims must include the boiler serial number and model (this information can be found on the

rating plate), installation date, and name of the installer. Shipping costs are not included in the warranty coverage.

Some accessory items are shipped in separate packages. Verify receipt of all packages listed on the packing slip. Inspect everything for damage immediately upon delivery, and advise the carrier of any shortages or damage. Any such claims should be filed with the carrier. The carrier, not the shipper, is responsible for shortages and damage to the shipment whether visible or concealed.

The warranty does not cover damage caused by improper assembly installation, operation or field modification.

1.3 Codes and Standards

The BJV Hydronic Boiler (or Brute Mini) is design certified by CSA (Canadian Standards Association) as complying with the latest edition of the “Standard for Gas Fired Low Pressure Steam and Hot Water Boilers”, ANSI Z21.13 in the USA and CAN1-4.9in Canada.

All boilers must be installed in accordance with the local building and installation codes as per the utility or authorities having jurisdiction. All local codes take precedence over national codes.

In the absence of local codes, refer to the following national codes for installation:

1.In the United States, the latest edition of "The National Fuel and Gas Code", ANSI Z223.1. Specifically, refer to Chapter 10, "Venting of Equipment".

2.In Canada, the latest edition of "The Installation Codes for Gas Burning appliances and Equipment", CSA B149.1.

Any changes to the boiler, gas controls, gas orifices, wiring, draft diverter, or improper installation may void the warranty. If change is required to any of the above, consult the factory.

1.4 Technical Assistance

Consult Bradford White or your local factory representative with any questions or problems involving the specifications, installation, and operation of your equipment. An experienced technical support staff is ready to assist you in assuring the proper performance and application of products. For technical support call the Bradford White Technical Service Department.

1.5Materials Installer Must Provide

1.5.1 Materials for All Installations

The following items are needed and are to be supplied by the installer for all Brute Mini boiler installations:

1.The correct size gas pipe to supply the gas to the boiler (see Section 4.1 for correct gas pipe size).

2.A CSA listed manually operated gas valve to be installed in the gas line outside of the boiler jacket.

3.A suitable gas union joint or other removable connector to connect the boiler to the gas line outside of the boiler.

4.Plumbing items needed to provide a sediment trap (drip leg) in the gas line between the manual gas valve and the union to the boiler.

5.A 115 VAC power supply. A junction box is not needed at the boiler, connections are made inside of the boiler’s control panel (see Figure 8).

6.Vent pipe of the same or larger diameter as the vent damper or draft diverter outlet (see Section 3.3 for venting instructions).

1.5.2 Materials for Most Installations

In addition to the items listed above, the following items may be needed:

1.Plumbing materials for the bypass piping, which is required for:

a. Any system where the return water

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temperature may be less than 120°F, such as in-floorradiant systems, snow melt systems or other systems where a “cold start” is expected frequently due to thermostat setbacks, etc. See Figure 11.

b.Any system where the temperature rise across the heat exchanger is above 30°F (see Section 5 and Figure 7).

2.Combustion air grates for openings sized in accordance with Section 3.1.

3.Field interlock wiring for any motorized combustion air louvers to ensure the boiler does not fire if motorized louvers do not open.

4.A suitable non-combustiblebase if installed on a combustible floor (see Section 2.3.2)

1.5.3 Diagnostic Tools

The following materials are needed to verify

correct installation:

1.Gas manometer to verify gas pressure

2.Strap-on,digital or infrared thermometer to check temperature rise across the heat exchanger.

3.Suggested: Draft gauge and combustion test equipment.

1.6 Specifications

1.6.1 General Specifications

1.Installation Location:

Certified for use in Indoor Applications only

2.Minimum Clearance From Combustible Material:

See Table 1 in Section 2.3.1.

3.Supply Gas Type:

Certified for use with Natural Gas and LP Gas

4.Gas Pipe/Boiler Gas Valve Connection:

 

Nat

LP

50-225

½" NPT

½" NPT

5.Inlet Gas Supply Pressure:

 

Minimum

Maximum

Natural Gas:

5.5" WC

10.5" WC

LP Gas:

10.0" WC

13.0" WC

6.Water Pipe/Boiler Connection: 1¼" NPT

7.Water Flow Rate:

See Table in Section 5.2

8.Pressure Relief Valve: 30 PSI

9.Recommended system pressure: 12 PSI

10.Exhaust Vent Connection Size:

504" Diameter 75-1005" Diameter125-1606" Diameter

2257" Diameter

11.Electrical Supply:

115Volts AC

12.Modification of Boiler for High Altitude:

Brute Mini Boilers are normally shipped from the factory in the low altitude (sea level) operational configuration. When requested, the boilers can be configured and shipped for higher altitudes. For field conversions to change altitude configurations, conversion parts are available from. For more information or call the Customer Service Department.

1.6.2 Dimensions

See Figure 1 for a diagram showing the boiler’s exterior dimensions and dimensions to critical connections on the boiler.

SECTION 2.

Installation Instructions

2.1 Introduction

WARNING

Improper installation or maintenance can cause nausea or asphyxiation from carbon monoxide in flue gases which could result in severe injury, or death.

AVERTISSEMENT

Une installation ou un entretien in adéquat peut causer la nausée ou l’asphyxie en raison du monoxyde de carbone présent dans les gaz de combustion et même entrainer des blessures graves ou la mort.

Install the Brute Mini boilers and vent dampers in accordance with the procedures in this manual, local codes and ordinances, and in accordance with the latest edition of the appropriate national code (see Section 1.3 “Codes and Standards”).

All gas-firedproducts require correct installation to assure safe operation. The requirements for boilers include the following:

1.Field assembly

2.Appropriate site location (clearances) and flooring

3.Sufficient combustion and ventilation air

4.Properly sized gas meter and piping

5.Proper electrical wiring (if required)

6.Adequate water flow

This manual provides the information needed to

meet these requirements. Review all application and installation procedures completely before continuing the installation.

NOTE: The Brute Mini boiler is approved for indoor installation only.

Brute Mini Hydronic Boiler

Page 5

 

 

Dimensions in inches cm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Dimensions

 

 

 

 

 

 

Water

Gas

 

 

 

 

 

 

inches cm

 

 

 

 

 

 

Conn.

Conn.

Size*

A

 

B

 

C

 

D

 

E

 

 

V

in.

in.

50

13-3/8

34

27-3/4

71

23-5/8

60

21-3/4

55

26-1/2

67

4

10

1-1/4

1/2

75

13-3/8

34

27-3/4

71

24-1/8

61

21-3/4

55

27-1/2

70

5

13

1-1/4

1/2

100

16-7/8

43

28-3/4

73

24-1/8

61

22-3/4

58

27-1/2

70

5

13

1-1/4

1/2

125

16-7/8

43

28-3/4

73

23-5/8

60

22-3/4

58

27-1/2

70

6

15

1-1/4

1/2

160

20-3/8

52

28-3/4

73

23-5/8

60

22-3/4

58

27-1/2

70

6

15

1-1/4

1/2

225

25-5/8

65

31-1/2

80

23-1/4

59

23-3/4

63

27-1/2

70

7

18

1-1/4

*3/4**

* Values shown are for both BJVS and BJVT Models

 

 

 

 

 

 

 

**1/2 for propane

Figure 1. Dimensional Information.

2.2 Field Assembly

1.Brute Mini boilers have built-indraft diverter for natural draft operation.

2.Find the vent damper box which is located in the boiler package.

3.Install the vent damper directly to the top of the draft diverter outlet with the damper operator facing to the front of the boiler, and with the flow direction arrow pointing upward. Use the vent damper wire harness provided with the boiler to connect the vent damper to the boiler. The bracket end of the harness should be connected to the vent damper actuator.

4.For Model BJVS only: Install the metal plug provided with the vent damper onto the damper plate hole. Disregard the metal plug in case of standing (continuous) pilot boilers. For all

BJVT models, the damper plate hole should never be blocked.

5.Do not modify the automatic vent damper device. It is very important that no other vents are closed. Provide at least six inches clearance between the automatic vent damper and combustible construction, and be sure to allow access for servicing the damper.

6.Install the temperature/pressure gauge provided in the parts box.

Figure 2. Field Assembly Items.

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Caution

Do not force motor operation when operator is fastened to the damper by moving the damper blade, turning the shaft or by turning the position indicator.

Attention

Ne pas tourner le registre manuellement avec ou sans courant électrique ou le moteur sera endommagé.

2.3.1 Clearances

The boiler must be placed to provide clearances on all sides for maintenance and inspection. There must also be minimum distances maintained from

Boiler Sizes

 

50-125

160-225

Clearances

in

cm

in

cm

Left side

6

15

6

15

Right side

6

15

6

15

Rear

6

15

6

15

Front

4

10

6

15

Flue

6

15

6

15

Top

23

48

36

91

Note: Clearances listed in Table 1 are manufacturer’s tested values. These are given as minimum values. Where local and national codes apply, and values are different than those listed in Table 1, use the greater value to ensure safe operation.

Table 1. Minimum Boiler Clearances

From Combustible Surfaces. Dégagements Minimaux à Assurer Entre Ics Parois de

L’appareil et leo Constructions Combustibles

combustible surfaces (see Table 1).

At least 15" (381mm) access must be available in front of the boiler for burner removal. Consult local codes for clearances to hot water pipes and accessories.

If the boiler is to be installed in a garage, all burners and burner ignition devices must have a minimum 18" (457mm) clearance above the floor.

The Model BJV-50throughBJV-100boilers can be installed in a closet, as long as the minimum clearances shown in Table 1 and Figure 3 are observed. Special attention should be paid to clearances between the front of the boiler and the closet door when it is closed.

Consult the American National Standard Z21.13 for more information concerning closet installations. In Canada, refer to the latest edition of CSA-B149.1.

 

6 15

4*

6 15

 

10

 

 

6 15

Dimensions in inches cm. *6" for models BJV160 to BJV225.

Figure 3. Closet and Alcove Installation (see Table 3).

2.3.2 Flooring

The boiler shall be installed on a level floor of noncombustible construction or onfire-resistantslabs or arches. Noncombustible flooring is defined as flooring material and surface finish not capable of being ignited and burning and with no combustible materials against the underside. Acceptable materials are those consisting entirely of a combination of steel, iron, brick, tile, concrete, slate, glass or plaster.Do not install the heater directly on a combustible wood or carpet floor without placing a noncombustible platform between the floor and the heater.

The boiler can be installed on a combustible floor if a noncombustible base assembly, available from , is used. See the boiler rating plate or the Parts List (Section 11) of this manual for the appropriate base part number. Boilers must never be installed directly on carpeting.

As an alternative to the noncombustible base plate, in the United States, the National Fuel Gas Code allows a heater to be placed on a combustible surface when there is a platform under the heater made of hollow masonry no less than 4 inches (102 millimeters [mm]) thick, covered with sheet metal at least 24 gauge thick and extending beyond the full width and depth of the heater by at least 12 inches (305mm) in all directions. The masonry must be laid with ends unsealed, and joints matched to provide free circulation of air from side to side through the masonry (see Figure 4). If the boiler is installed in a carpeted alcove, the entire floor of the alcove must be covered by a noncombustible platform.

Figure 4. Typical Combustible Floor Installation.

Brute Mini Hydronic Boiler

Page 7

 

 

SECTION 3.

Venting

3.1 Combustion Air Supply

The boiler location must provide sufficient air supply for proper combustion, and ventilation of the surrounding area as outlined in the latest edition of ANSI standard Z223.1 or in Canada, CSA-B149.1,and any local codes that may be applicable.

In general, these requirements specify that boiler rooms which represent confined spaces should be provided with two permanent air supply openings; one within 12 inches (305mm) of the ceiling, the other within 12 inches (305mm) of the floor (see Table 2).

Boiler Size

Outside Air Area*

Inside Air Area*

Sq. In.

sq cm

Sq. In.

sq cm

 

50

15

97

100

645

 

 

 

 

 

75

20

129

100

645

 

 

 

 

 

100

25

161

100

645

 

 

 

 

 

125

32

206

125

807

 

 

 

 

 

160

40

258

160

1032

 

 

 

 

 

225

60

387

225

1452

 

 

 

 

 

*Area indicated is for one of two openings; one at floor level and one at the ceiling, so the total net free area would be double the figures indicated. For special conditions, refer to NFPA54 ANSI Z223.1. In Canada refer to the National Standard CSA B149.1 which differs from this table.

NOTE: Check with louver manufacturers for Net Free Area of louvers. Correct for screen resistance to the Net Free Area if a screen is installed. Check all local codes applicable to combustion air.

Table 2. Minimum Recommended

Air Supply to Boiler Room.

Important: See gas piping selection chart, Table 3 for gas line sizing. In all cases, pipe size is larger than inlet connection on heater. Run pipe size shown in chart and reduce at heater inlet.

Outside Air Supply: When combustion air is supplied directly through an outside wall, each opening should have a minimum free area of one square inch per 4,000 BTU/h (1.2kW) input of the total input rating of all appliances in the enclosed area.

If air is provided through horizontal ducts, each opening and duct must provide one square inch of flow area for each 2000 BTU/h (0.6 kW). These requirements are summarized in Table 2. Note that the required size of openings shall be based on the net free area of each opening. Where the free area of louver or grille is known it shall be used in calculating the effective free area. Where the free area are not known, it shall be assumed that wood louvers will have 25 percent free area, and metal louvers and grilles will have 75 percent free area.

Inside Air Supply: When combustion is supplied from inside the building, each opening should have a minimum free area of one square inch per 1,000 BTU/h (0.3kW) input of the total input rating of all appliances in the enclosed area. These openings should never be less than 100 square inches

(645 sq. cm).

Note: In Canada, follow Canadian Standard, CSAB149.1 or local codes.

Exhaust Fans or Vents: Any equipment which exhausts air from the boiler room can deplete the combustion air supply or reverse the natural draft action of the venting system. This could cause flue products to accumulate in the boiler room. Additional air must be supplied to compensate for such exhaust.

The information in Table 2 is not applicable in installations where exhaust fans or blowers of any type are used. Such installations must be designed by qualified engineers.

If a blower or fan is used to supply air to the boiler room, the installer should make sure it does not create drafts which could cause nuisance shutdowns of the pilot. If a blower is necessary to provide adequate combustion air to the boiler, a suitable switch or equivalent must be wired into the boiler control circuit to prevent the boiler from firing unless the blower is operating.

The boiler must be completely isolated and protected from any source of corrosive chemical fumes such as those emitted by trichlorethylene, perchlorethylene, chlorine, etc.

WARNING

Do not store any chemical, cleaners, or other corrosive material near combustion air openings or in the room. Avoid locating dryer vents in the vicinity of combustion air openings. Failure to prevent corrosive materials from mixing with combustion air can result in reduced boiler life and unsafe boiler operation.

AVERTISSEMENT

N’entrepposer aucun produit chimique, produit nettoyant ou produit corrosif à proximité des bouches d’air de combustion ou dans la pièce. Éviter de placer des tuyaux de ventilation pour sécheuse à proximité des bouches d’air de combustion. Le fait de laisser des maitières corrosives se mélanger à l’air de combustion risque de réduire le cycle de vie de l’appareil de chauffage et de compromettre son fonctionnement.

3.2 Exhaust Venting

Vent piping must be of the same or larger diameter as the vent damper or draft diverter outlet. The only correct procedure for vent pipe sizing is to do so in accordance with Table 3 and the applicable installation code as stated in the following warning.

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WARNING

Vent pipe diameter must be as required by the National fuel Gas Code Z223.1 or the Canadian Installation Codes for Gas Appliances CSA-B149.1.Undersize pipe can result in inadequate venting and oversize pipe can result in vent condensation. In either case the result can be release of combustion products to the indoors. This can cause serious injury or death by carbon monoxide poisoning or asphyxiation.

AVERTISSEMENT

Le diamètre des tuyaux de ventilation doit répondre aux exigences du National Fuel Gas Code Z223.1 ou du code canadien des installations des appareils à gaz CSA B149.1. Des tuyaux trop petits rispquent d’entraîner une ventilation inadéquate et des tuyaux trop gros risquent de provoquer une condensation dans les tuyaux. Dans un cas comme dans l’autre, des produits de combustion risquent de s’échapper dans le bâtiment et causer des blessures graves ou l’asphyxie par le monoxyde de carbone.

BJVS/BJVT

Vent Pipe Diameter

Size

inch

cm

 

 

 

50

4

10

75

5

13

100

5

13

125

6

15

160

6

15

225

7

18

Table 3. Exhaust Vent Connection Size.

3.3Vent Pipe Sizing and General Installation

All vent installations and boiler stacking must be designed and installed in accordance with all local, state or provincial codes and with:

1.Chapter 7, “Venting of Equipment” of the national Fuel Gas Code, ANSI 223.1 latest edition, or the applicable provisions of the local building codes.

2.In Canada, CSA-B149.1.

The draft diverter outlet is to be connected to an

unobstructed vent pipe of the same or larger diameter, terminating outside the building. The vent pipe must have a listed vent cap and extend at least two feet above any object with a ten foot radius. All connections should be made with rustproof sheet metal screws.

IMPORTANT NOTE: Do not use sheet metal screws at the snap lock joints of Type B gas vents.

Do not weld or fasten the vent pipe to the boiler draft diverter. The weight of the stack must not rest on the boiler. The draft diverter and boiler top must be easily removable for normal boiler service and inspection.

Avoid horizontal runs of the vent pipe, and 90° elbows, reductions and restrictions. Horizontal runs should have at least a 1/4" rise per foot (20mm per meter) in the direction of flow. A vent connector shall be supported for the design and weight of the material employed to maintain clearances and prevent physical damage and separation of joints.

Avoid terminating boiler vents near air conditioning or air supply fans. The fans can pick up exhaust flue products from the boiler and return them inside the building, creating a possible health hazard. Do not located the vent terminal where flue products could strike against building materials and cause degradation.

Always use double-wallor insulated vent pipe when used as a chimney (Type B or equivalent). In cold weather, uninsulated outside vents can chill the rising flue products, blocking the natural draft action of the venting system. This can create a health hazard by spilling flue products into the boiler room. Use engineered venting tables acceptable to the authority having jurisdiction to size the venting pipe or liner.

Avoid oversize vent piping or extremely long runs of the pipe which may cause excessive cooling and condensation.

Before connecting a vent connector to a chimney, the chimney passageway shall be examined to ascertain that it is clear and free of obstructions. When inspection reveals that an existing chimney is not safe for the intended application, it shall be rebuilt to conform to nationally recognized standards (see National Building Code or ANSI/NFPA 211), lined or relined with a suitable liner, or replaced with a vent or chimney suitable for the equipment to be attached.

3.4Common Venting Systems

3.4.1 Venting Multiple Appliances

When common venting BJVS or BJVT natural draft boilers with other appliances through one shared duct called a “common vent”, special care must be taken by the installer to ensure safe operation. In the event that the common vent is blocked, it is possible, especially for fan-assisteddevices, to vent backwards throughnon-operatingappliances sharing the vent, allowing combustion products to infiltrate occupied spaces.If the appliances are allowed to operate in this condition, serious injury or death may occur.

Brute Mini Hydronic Boiler

Page 9

 

 

WARNING

Operation of appliances with a blocked common vent may lead to serious injury or death. Safety devices must be implemented to prevent blocked common vent operation. If safe operation of all appliances connected to a common vent cannot be assured, including prevention of spillage of flue gasses into living spaces, common venting should not be applied, and appliances should each be vented separately.

AVERTISSEMENT

Le fonctionnement des appareils avec un système d’évacuation bloqué peut provoquer des blessures graves, voire la mort. Des dispositifs de sécurité doivent être installés pour éviter le blocage des systèmes d’évacuation. Si le fonctionnement de tous les appareils connectés à un système d’évacuation commun ne peut pas être assuré, y compris la prévention de la dispersion des gaz toxiques dans les espaces habités, on ne devrait pas installer un système d’évacuation commun et chaque appareil devrait être ventilé séparément.

It is for this reason that, in addition to following proper vent sizing, construction and safety requirements from the National Fuel Gas Code, ANSI Z223.1 or in Canada, from CSA B149.1 as well as all applicable local codes, it is required that installers provide some means to prevent operation with a blocked common vent. It is suggested that a blocked vent safety system be employed such that if the switch from one appliance trips due to excessive stack spill or backpressure indicating a blocked vent condition, that all appliances attached to the vent be locked out and prevented from operating. As an additional precaution, it is recommended that a Carbon Monoxide (CO) alarm be installed in all enclosed spaces containing combustion appliances. If assistance is required in determining how a blocked vent safety system should be connected to a product, please call Applications Engineering (see back cover for info).

Refer to the installation and operating instructions on all appliances to be common vented for instructions, warnings, restrictions and safety requirements. If safe operation of all appliances connected to a common vent cannot be assured, including prevention of spillage of flue gasses into living spaces, common venting should not be applied, and appliances should each be vented separately.

3.4.2 Inspection of Commonly Vented Appliances

If the instrumentation of this boiler replaces an older boiler in a common vent system with other appliances, or if you remove additional appliances from the common vent, all the appliances must be checked for proper venting.

At the time of removal of an existing boiler, the following steps shall be followed with each appliance remaining connected to the common venting system placed in operation, while the other appliances remaining connected to the common venting system are not in operation.

1.Seal any unused openings in the common venting system.

Sceller toutes les ouvertures non utilisées du système d’évacuation.

2.Visually inspect the venting system for proper size and horizontal pitch and determine there is no blockage or restriction, leakage, corrosion and other deficiencies which could cause an unsafe condition.

Inspecter de façon visuelle le système d’évacuation pour déterminer la grosseur et l’inclinaison horizontale qui conviennent et s’assurer que le système est exampt d’obstruction, d’étranglement, de fuite, de corrosion et autres défaillances qui pourraient présenter des risques.

3.Insofar as it is practical, close all building doors and windows and all doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building. Turn on clothes dryers and any appliance not connected to the common venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they will operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers.

Dans la mesure du possible, fermer toutes les portes et les fenêtres du bâtiment et toutes les portes entre l’espace où les appareils toujours raccordés au système d’évacuation sont installés et les autres espaces du bùtiment. Mettre en marche les sécheuses, tous les appareils non raccordés au systéme d’évacuation commun et tous les ventilateurs d’extraction comme les hottes de cuisinière et les ventilateurs des salles de bain. S’assurer que ces ventilateurs fonctionnent à la vitesse maximale. Ne pas faire fonctionner les ventilateurs d’été. Fermer les registres des cheminées.

4.Place in operation the appliance being inspected. Follow the lighting instructions. Adjust thermostat so appliance will operate continuously.

Mettre l’appareil inspecté en marche. Suivre les instructions d’allumage. Régler le thermostat de façon que l’appareil fonctionne de façon continue.

5.Test for spillage at the draft hood relief opening after 5 minutes of main burner operation. Use the

Page 10

BRADFORDWHITECORP.

 

 

flame of a match or candle, or smoke from a cigarette, cigar or pipe.

Faire fonctionner le brûleur principal pendant 5 min ensuite, déterminer si le coupe-tiragedéborde à l’ouverture de décharge. Utiliser la flamme d’une allumette ou d’une chandelle ou la fumée d’une cigarette, d’une cigare ou d’une pipe.

6.After it has been determined that each appliance remaining connected to the common venting system properly vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers and any other gas burning appliance to their previous conditions of use.

Une fois qu’il a été déterminé, selon la méthode inidquée ci-dessus,que chaque appareil raccordé au système d’évacuation est mis à l’air libre de façon adéquate. Remettre les portes et les fenêtres, les ventilateurs, les registres de cheminées et les appareils au gaz à leur position originale.

7.Any improper operation of the common venting system should be corrected so the installation conforms with the National Fuel Gas Code, ANSI Z223.1. When resizing any portion of the common venting system, the common venting system should be resized to approach the minimum size as determined using the appropriate tables in Appendix G in the National Fuel Gas Code, ANSI Z223.1.

Tout mauvais fonctionnement du système d’évacuation commun devrait être corrigé de façon que l’installation soit conforme au national Fuel Gas Code, ANSI Z223.1 et (ou) aux codesd}installation CSA-B149.1.Si la grosseur d’une section du système d’évacuation doit être modifiée, le système devrait être modifié pour respecter les valeurs minimales des tableaux pertinents de l’appendices F duNational Fuel Gas Code, ANSI Z2231.1 et (ou) des codesd}installation CSA-B149.1.

SECTION 4.

Gas Connections

4.1 Gas Supply and Piping

Review the following general instructions before continuing the installation.

WARNING

The Brute Mini BJVS and BJVT boilers are designed for use with either natural gas or LP gas. Check the rating plate to be sure that the boiler is designed to use the type of gas being supplied. DO NOT

ATTEMPT TO CONVERT THIS HEATER FOR USE WITH ANY OTHER TYPE OF FUEL.

AVERTISSEMENT

Les appareils de chauffage à faibles sont conçus pour être utillsés avec du gaz naturel ou du gaz de pétrole liquéfié (GPL). Vérifiez l’information inscrite sur la plaque signalétique du pour vous assurer que l’appareil est conçu pour le type de gaz fourni. NE

PAS ESSAYER DE CONVERTIR CET APPAREIL

ÀUN AUTRE TYPE DE GAZ.\

1.Gas piping installation must be in accordance with the latest edition of ANSI Z223.1 and all local codes. In Canada, the installation must be in accordance with CSA-B149.1and all local codes that apply.

2.Check the gas supply to be sure that it is the same as the gas indicated on the boiler’s plate. Brute Mini BJVS and BJVT boilers, as shipped from the factory, are certified to operate within the altitude range indicated on the rating plate. If a field conversion to a different altitude range should be necessary, conversion parts are available for changing the altitude range of the heater. Contact factory for parts information.

Caution

Permanent damage to the gas valve will occur if the following procedures are not followed.

Attention

Vous endommagerez la soupape de gaz si vous ne respectez pas les procédures suivantes.

3.Use the figures in Table 4 to size the gas inlet piping from the gas meter to the heater. Check all local codes for compliance before installing the heater.

Brute Mini Hydronic Boiler

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Distance

 

 

Boiler Size

 

 

 

 

 

 

 

 

From Gas

50

75

100

125

160

225

Meter

 

 

 

 

 

 

 

 

Pipe Size

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0-50'

1/2

3/4

3/4

3/4

1

1

0-15m

 

 

 

 

 

 

50-100'

3/4

3/4

3/4

1

1

1-1/4

15-30m

 

 

 

 

 

 

100-200'

3/4

1

1

1

1-1/4

1-1/4

30-60m

 

 

 

 

 

 

*Note: These figures are for Natural Gas (.65 Sp. Gr.), and are based on 1/2" water column pressure drop. Check supply pressure with a manometer, and local code requirements for variations. For LPG, reduce pipe diameter one size, but maintain a 1/2" minimum diameter. A 'normal' number of Tees and elbows have been taken into allowance.

Table 4. Natural Gas Pipe Size Requirements*

Gas Supply

 

Inlet

 

Tee

To Equipment

Inlet

Fitting

 

3 in.

Nipple

(76mm) Min.

 

 

Cap

Figure 5. Typical design for a sediment trap/drip leg.

4.A sediment trap (drip leg) must be installed ahead of the gas controls (see Figure 5). Fit the trap with a threaded cap which can be removed for cleaning.

5.Install a manual gas shutoff valve for service and safety. Do not use a restrictive gas cock. Flexible gas connectors, if used, must be CSA rated for the total input rating of the boiler.

6.Disconnect the boiler and its individual shutoff valve from the gas supply system during pressure testing of the system at pressures higher than 1/2 pounds per square inch (psi) (3.45 kilopascals [kPa]). If the test pressure is equal to or less than 1/2 psi (3.45 kPa), close the manual shutoff valve on the heater during the piping pressure test.

7.If the gas supply pressure is less than required, check for undersized pipe between the meter and the boiler, a restrictive fitting, or an undersized gas meter. Gas supply pressures to the heater are listed in Table 5.

NOTE: The maximum inlet gas pressure must not exceed the specified value. The minimum value listed is for the purpose of input adjustment. Refer to Table 5.

Supply Pressure

Minimum

Maximum

 

 

 

Natural Gas

5.5 Inches WC

10.5 Inches WC

 

(1.3 kPa)

(2.5 kPa)

 

 

 

LP Gas

10.0 Inches WC

13.0 Inches WC

 

(2.4 kPa)

(3.1 kPa)

Table 5. Gas Supply Pressure Requirements.

NOTE: The boiler and all other gas appliances sharing the boiler gas supply line must be firing at maximum capacity to properly measure the inlet supply pressure. Low gas pressure could be an indication of an undersize gas meter and/or obstructed gas supply line.

8.The correct high fire burner manifold gas pressure is stamped on the rating plate. The regulator is pre-setat the factory, and normally requires no further adjustment. Fortwo-stageunits (BJVS100-225)be sure unit is able to fire at both high and low fire.

9.Before operating the boiler, the complete gas supply system and all connections must be tested for leaks using a leak detector solution. Do not use an open flame.

Caution

Some leak test solutions (including soap and water) may cause corrosion or stress cracking. Rinse the piping with water after testing.

Attention

Certaines solultions d’essai d’étanchéité (y compris l’eau et le savon) peuvent causer de la corrosion ou de la fissuration. Rincez les tuyaux à l’eau apprès l’essai d’étanchéité.

4.2 Special Precautions for LP Gas

LP Gas is heavier than air and can therefore more readily collect or “pool” in enclosed areas if provision for proper ventilation is not made. Be sure to pay special attention to proper ventilation for LP gas. Locate boilers a safe distance from LP gas cylinders and filling equipment. In the United States, consult the “National Fuel Gas Code” (NFPA 54 / ANSI Z223.1, latest edition) or in Canada, the Propane Installation Code (CSA-B149.1),any local codes and fire protection authorities about specific installation restrictions in your area.

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SECTION 5.

Water Connections

5.1 Water Piping

Figure 6 shows ‘typical’ plumbing installations. Be sure to provide unions andisolation valves at the boiler inlet and outlet so it can be isolated for service. Check local codes for specific plumbing requirements before beginning the installation.

An ASME pressure relief valve is supplied on all BJV boilers, and is pre-setat 30 PSI. The valve outlet piping must discharge to a drain. Under no circumstances should the relief valve piping be a closed circuit.

A pressure reducing valve (automatic feed) must be used to maintain system at constant proper pressure (see Figure 6). Supply properly installed purge valves to eliminate air from each circuit.

A drain valve is supplied with the boiler, and can be found in the plastic bag shipped with each boiler. This valve is to be installed on the lower right side of the boiler, see Figure 1, and is used for draining the unit. To drain the boiler completely, open the drain valve and remove the two drain plugs located on the lower left side of the boiler.

Be sure to include air vent devices located at the highest point in the system to eliminate trapped air, and an air elimination device near the outlet side of the BJV boiler. Manual vent valves are recommended.

Hot water piping should be supported by suitable hangers or floor stands, NOT by the boiler. Due to expansion and contraction of copper pipe, consideration should be given to the type of hangers used. Rigid hangers could transmit noise through the system caused by the piping sliding in the hangers. It is recommended that padding be used when rigid

hangers are installed.

 

Gas piping should also be supported by suitable

hangers or floor stands, not the boiler.

 

A properly sized expansion tank must be

included in the system. offers an aircharged

diaphragm-typeexpansion tank, with an automatic

feed valve, which includes a pressure regulator set at

12 psig. The part numbers are:

 

Less Than 20 Gallons in System

A0066800

20 to 45 Gallons in System

A0066900

5.1.1 By-passPiping

The following information and suggestions are made on by-passpiping as it affects the temperature rise at the boiler. A boiler temperature rise must be taken on all BJV boiler installations. If the temperature rise exceeds 30°F (17°C) at full rate, it is an indication that the boiler is not receiving adequate water flow. Check the pump for any obstruction, replace the pump with a larger size where necessary, or install a systemby-passas indicated in Figures 6 and 7.

A full sized, 1¼" bypass with balancing valves is strongly recommended for all systems, and required when: 1) the boiler is installed without primarysecondary piping in a multiple zone system; 2) when the return water temperature can be expected to be lower than 120°F (44°C); or 3) whenever the system piping on the outlet side of the boiler may allow reduced flow through the heat exchanger, causing excessive temperature rise (see Section 5.2).

Note: Bradford White strongly recommends a primary/secondary piping system for all installations, especially sizes 125, 160 and 225. In this system, a circulator is dedicated to pumping the boiler only. This circulator should be sized for the boiler head loss and flow rate.

All precautions must be taken by the installer to insure that a maximum temperature rise through the boiler does not exceed 30°F (17°C). The temperature rise on boilers installed in multi-zonesystems using zone valves must be taken when the zone of the longest length and/or the zone of the highest head loss is open.

A full size, 1¼" diameter by-passwith balancing valve must be installed if a return water temperature below 120°F (44°C) is expected under operating conditions regardless of boiler size. This may be expected in many systems, including infloor radiant and snow melt systems.

Adjusting the bypass:

Refer to figure 7. Provide a means of measuring temperature on the inlet pipe to the boiler such as using a strap on or infrared themometer. Starting with both balancing valves fully open, start the boiler. Adjust the balancing valve on the return to the system slowly to provide 120°F (44°C) water at the inlet to the boiler, leaving the bypass balancing valve fully open. As the system warms up, this valve may need to be adjusted open. In rare cases, this valve will have to be kept fully open, and the bypass balancing valve adjusted toward closed to prevent heated bypass water from satisfying the call for heat when the system is up to temperature.

5.2 Alternate Auto-BypassOperation

Use of the themostatic union, p/n 2400-030,can provide automatic bypass operation in primary - secondary piped systems (but cannot be used when primary - secondary piping is not used). The thermostatic union is installed on the outlet piping, after the bypass assembly. It can be used in place of a balancing valve. It opens fully at 140°F (see Figure 6). Contact the factory for more information.

Brute Mini Hydronic Boiler

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 6. Typical Plumbing Installations.

Page 14

BRADFORDWHITECORP.

 

 

 

BJV

Multi-Zone

BJV

 

Boiler

Valve System

Boiler

 

 

Single Circuit System

 

Multi-Zone

BJV

 

 

Pump

 

 

Boiler

 

 

System

 

 

 

Figure 6A. Typical Plumbing Installations.

Air Scoop

Pump

System

Loop

Feed

Expansion Water

Tank

Figure 6B. Typical Plumbing Installations.

Brute Mini Hydronic Boiler

Page 15

 

 

 

 

To

 

 

System

From

 

 

System

Balancing

 

Valve

 

 

 

Balancing Valve

 

 

or optional

 

 

thermostatic union,

 

 

P/N 2400-030.

 

 

(Primary/Secondary

 

 

only)

In

 

Out

(Return)

(Supply)

 

 

Drip

 

 

Leg

Left Side View

A full size by-passmust be installed.

Figure 7. By-passPiping.

5.3 Flow Requirements

All high recovery, low volume water boilers must have adequate flow for efficient operation. Pump selection is critical to this goal, and pumps should be selected to provide for system design water temperature rise. Table 6 details temperature rise and water flow (GPM) for the Brute Mini boilers.

Damage from improper flow is not warranted.

Failure to insure proper water flow through the heat exchanger of the boiler will void the warranty. Flow can be verified by measuring the difference in water temperatures between the boiler inlet and outlet. For example: For a BJV-100installation, the inlet

water temperature is 160°F (71°C), and the outlet temperature is 180°F (82°C) at Normal Input Rate from the rating plate. That means there is a 20° (11°C) temperature rise through the boiler. According to Table 1, that would indicate a flow rate of 8 GPM (0.5L/S). Temperature rise must be measured with the longest (highest head) zone calling for heat alone.

Other factors to be considered before selecting a pump are pipe size, the number of fittings throughout the system, smoothness of the interior surface of the pipe, the quantity of water flowing through the pipe, whether a glycol solution is being used, and the total length of piping in the system. Table 7 provides examle pump selection criteria using Type L copper piping, one zone valve and up to eight elbows for single zone systems. Consult the factory or a qualified system designer if you have more fittings, different size or type of pipe (especially in retrofit situations), or some other unique system configuraiton not illustrated in this manual.

 

1/2" Pipe

3/4" Pipe

 

1" Pipe

 

1-1/4"Pipe

 

 

 

 

 

 

 

 

 

 

 

Size

Pump

 

Pump

 

 

Pump

 

 

Pump

 

 

H.P.

 

H.P.

 

 

H.P.

 

 

H.P.

 

 

1/25

1/12

1/25 1/12

1/6

1/25

1/12

1/6

1/25 1/12

1/6

 

 

 

 

 

 

 

 

 

 

 

50

50

99

390 680

*

*

*

*

*

*

*

75

*

35

160

300

460

640

*

*

*

*

*

100

*

*

77

150

260

330

620

*

*

*

*

125

*

*

27

80

140

170

360

600

*

*

*

160

*

*

*

25

72

57

160

330

190

480

*

225

*

*

*

*

*

*

*

110

*

69

330

*A circulator and/or primary/secondary piping are required. Consult factory.

1. Chart is based on 30°F (17°C) maximum temperature rise.

2. Calculations are based on Type L copper tubing with one zone valve and eight elbows.

3. Typical circulating pumps: 1/25 HP=Taco 007, B&GLR-20orSLC-25,GrundfosUP15-42F,or equivalent.1/12 HP=B&G LR-

12, Grundfos UP26-42F,or equivalent.1/6 HP=B&G series HV, GrundfosUP43-75,or equivalent.

Table 7. Maximum Suggested Circuit Length in Feet.

 

 

 

15°F

8°C

 

 

20°F

11°C

 

 

25°F

14°C

 

Size

 

Flow Rate

Headloss

Flow Rate

Headloss

Flow Rate

Headloss

 

 

gpm

l/s

ft

m

gpm

l/s

ft

m

gpm

l/s

ft

m

50

 

5.3

0.3

0.3

0.1

4

0.3

0.2

0.1

3.2

0.2

0.1

0

75

 

8

0.5

0.6

0.2

6

0.4

0.3

0.1

4.8

0.3

0.2

0.1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100

 

10.7

0.7

1.3

0.4

8

0.5

0.7

0.2

6.4

0.4

0.5

0.2

125

 

13.3

0.8

2.2

0.7

10

0.6

1.3

0.4

8

0.5

0.8

0.2

160

 

17

1.1

2.5

0.8

12.8

0.8

1.8

0.5

10.2

0.6

1.2

0.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

225

 

24

1.5

5

1.5

18

1.1

3.1

0.9

14.4

0.9

1.9

0.6

 

 

 

 

gpm = Water Flow in gallons per minute. l/s = Water flow in liters per second.

 

 

 

ft = Pressure drop (headloss) through the boiler in feet of water.

m = Pressure drop (headloss) through the boiler in meters of water.

 

 

 

 

Notes: 1. Shaded area is the recommended flow and temperature rise.

 

 

 

 

2. Temperature rise and associated flow rates are based on high fire operation at the Normal Input Rate from the rating plate.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 6. Temperature Rise °F °C.

Page 16

BRADFORDWHITECORP.

 

 

5.4 Chilled Water Systems

If the boiler is installed in conjunction with refrigeration systems, it shall be installed so that the chilled medium is piped in parallel with the heating boiler with appropriate valves to prevent the chilled medium from entering the heating boiler.

When boiler piping is connected to heating coils, which are in close proximity to refrigerated air circulation, there must be flow control valves or other automatic methods to prevent gravity circulation of the boiler water during the cooling cycle.

5.5 Oxygen Permeable Systems

The BJV boiler must not be direct connected to a heating system utilizing oxygen permeable tubing. Provide a water-to-waterheat exchanger between systems to prevent corrosion of ferrous metals such as the boiler’s piping wet walls, etc. Air elimination devices are not sufficient protection, and corrosion damage is not covered under the limited warranty.

5.6 Anti-Freeze

Non-toxicheating systemanti-freezemay be added to the hydronic system provided the concentration does not exceed 50%, and the antifreeze contains an anti foamant. Follow theanti-freezemanufacturer’s recommendations for yearly or biannual replacement of systemanti-freeze.

SECTION 6.

Electrical

WARNING ELECTRICAL SHOCK HAZARD.This boiler contains wiring that carries high voltage. Contact with these wires may result in severe injury or death.

AVERTISSEMENT POSSIBILITÉ DE CHOCS ÉLECTRIQUES.Ce système de chauffage contient du filage de haut voltage. Un contact avec ces fils peut résulter en des blessures sérieuses ou la mort.

Caution

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

Attention

Au moment de l’entretien des commandes, étiquetez tous les fils avant de les débrancher. Des erreurs de câblage peuvent entraîner un fonctionnement inadéquat et dangereux.

6.1 General Information

Wiring connections must be made exactly as shown in the wiring diagram found on the inside of the control box cover (see Figure 8). The boiler must include a definite means of grounding. There is a bonding lug, where a bond wire must be attached.

Transformer BLKPump Relay

 

 

 

Power

GRN - Ground

Supply

BLK - Hot

115V AC

WHT - Neutral

 

 

60 Hz

 

 

To Pump

WHT - Neutral

BRN - Hot

115V AC

On = Call

3/4 H.P.

for heat

 

Max

115V Field Wiring

115V Factory Wiring

BRN WHT

Figure 8. Field Wiring Connections.

6.2 Main Power

Electrical wiring must be in accordance with the latest edition of the National Electric Code (NEC), ANSI/National Fire Protection Association (NFPA) 70, unless local code requirements indicate otherwise.

The heater comes factory-wiredintended for use with 115 Volt, 60 Hz AC field electrical supply.

Making electrical connections must be done by a certified electrician only, as with all wiring. Be sure that the power source to the heater is turned off or disconnected before servicing.

To wire the Brute Mini boiler to a 115V / 60 Hertz (Hz) electrical source:

1.Remove the two screws attaching the front cover of the control box.

2.There are four wires coiled in the area on the right side of the control box, supplied with wire nuts: 2 black wires twisted together, a white wire and a brown wire (see Figure 8).

3.Follow the schematics in Figure 9. Remove the wire nut from the two black wires, and connect the hot lead from a 115V power supply to both wires. Secure the three wires with the wire nut. The white, neutral wire should be joined to the other neutral lead coming from the 115V power supply, and the neutral lead coming from the pump. The brown wire attaches to the hot side of the pump.

NOTE: No external junction box is required.

4.Attach the leads from the wall thermostat to the R and W terminals on the terminal strip, located on the left side of the control box.

Brute Mini Hydronic Boiler

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 9a. Wiring Diagram, Spark Ignition System (BJVS 50 & 75).

5.When using a or field supplied power venter, the proving switch must be connected in series with the hi-limit.

6.Check the boiler wiring and pump for correct voltage, frequency and phase. If the pump circuit is other than 115V, be sure there is an appropriate transformer or relay installed. The pump relay is suitable for pumps of ¾ HP or less.

7.For systems with multiple zone pumps or valves, see Figure 10.

A means of disconnecting the electrical supply must be provided within sight of the boiler. The pump and boiler must be wired as shown to insure that the pump is running whenever the boiler is firing.

 

110V

 

 

 

 

 

 

 

110V

 

Hot

 

 

 

 

 

 

 

Neutral

 

 

 

Zone

 

Space Heating

 

 

 

 

 

 

 

Pump

 

 

 

 

 

 

Pump

(Field Supplied)

 

 

 

 

 

 

Relay

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

3

 

 

 

 

 

 

 

 

 

115V

 

 

 

 

 

 

 

 

 

24V

 

 

 

 

 

 

Fuse

 

 

 

 

 

 

 

 

 

 

 

 

Thermostat

 

 

 

 

Zone

 

 

 

Boiler

Field

 

 

Boiler

 

Pump

 

Zone

 

Terminal

Supplied

 

Terminal

 

Relay

 

Pump

4

R

 

 

 

W

 

R

 

 

 

 

 

 

 

 

 

Relay

 

 

 

 

 

 

 

 

 

 

 

Boiler

Optional

 

High

 

 

 

 

Zone

 

Terminal

Aquastat

 

Limit

 

 

 

 

 

 

 

 

 

 

 

 

 

Pump

6

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Relay

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Vent

 

 

 

 

 

 

 

 

Damper

 

 

 

 

 

 

 

 

Receptacle

 

 

 

 

 

Power

 

 

Ignition Control

 

 

 

 

 

 

 

 

 

 

 

 

 

Venter

 

 

 

MV/

 

 

24V

Jumper

 

Receptacle

 

 

 

 

 

 

24V

PV

PV

MV

GND GND

 

 

 

 

 

 

6

3

2

1

4

5

 

 

Blocked

Roll-Out

 

 

 

 

 

 

 

 

Vent

Safety

 

 

 

 

 

SPARK

 

 

Switch

 

 

 

 

 

 

 

Safety

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PV

MV/

MV

 

 

 

 

 

 

 

 

PV

 

 

 

Remote Flame Sensor

High Altitude (Optional)

Gas Valve

HW VR8304

Figure 9b. Schematic, Spark Ignition System (BJVS 50 & 75).

Page 18

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BRADFORDWHITECORP.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 9c. Wiring Diagram, Standing Pilot System (BJVT).

Figure 9d. Schematic, Standing Pilot System (BJVT).

Brute Mini Hydronic Boiler

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 19