Bradford-White Corp Modulating Boiler, BNTV warranty A Water Connections - BNTH Boiler

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SECTION 6A.

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BRADFORD WHITE CORP.

 

 

 

 

SECTION 6A.

Water Connections - BNTH Boiler

Section 6 is divided into two parts. The first is for BNTH models and is Section 6A. The second is for BNTV models and is Section 6B. Refer to the proper section for instructions in installing and piping your product. Refer to Table 9 for pipe sizes required.

6A.1 BNTH System Piping: Hot Supply Connections

NOTE: This appliance must be installed in a closed pressure system with a minimum of 12 psi (82.7kPa) static pressure at the boiler.

Hot water piping should be supported by suitable hangers or floor stands. Do not support piping with this appliance. Due to expansion and contraction of copper pipe, consideration should be given to the type of hangers used. Rigid hangers may transmit noise through the system resulting from the piping sliding in the hangers. It is recommended that padding be used when rigid hangers are installed. Maintain 1" (2.5cm) clearance to combustibles for hot water pipes.

Pipe the discharge of the relief valve (full size) to a drain or in a manner to prevent injury in the event of pressure relief. Install an air purger, an air vent, a diaphragm-type expansion tank, and a hydronic flow check in the system supply loop. Minimum fill pressure must be 12psig (82.7kPa). Install shutoff valves where required by code.

Suggested piping diagrams are shown in Figures 15 through 21. These diagrams are meant only as a guide. Components required by local codes must be properly installed.

Brute Elite's efficiency is higher with lower return water temperatures. Therefore, to get the most of low return temperature with multiple boilers, pipe as shown in Figures 17-19.

Brute Elite BNTH models can be ordered with or without a pump included.

Brute Elite with a pump MUST be piped in a primary-secondary fashion (using either piping or a hydraulic separator) such that the pump that is mounted on the boiler ONLY serves the boiler.

When the pump is supplied by Bradford White, the Brute Elite boiler must be located within 15 feet (4.6m) of the supply and return header (or the hydraulic separator). Pumps supplied by Bradford White are sized for a maximum of 30 feet (9.1m) of piping and the headloss of the boiler only (see Table 7).

If longer pipe lengths are required, the pump should be sized for the boiler per Table 7 and for the piping it will serve, and should be supplied to job separately. Even with pumps supplied by others, Bradford White strongly recommends primary- secondary piping.

6A.2 BNTH Cold Water Make-Up

1.Connect the cold water supply to the inlet connection of an automatic fill valve.

2.Install a suitable back flow preventer between the automatic fill valve and the cold water supply.

3.Install shut off valves where required.

The boiler piping system of a hot water heating boiler connected to heating coils located in air handling appliances where they may be exposed to refrigerated air circulation must be equipped with flow control valves or other automatic means to prevent gravity circulation of the boiler water during the cooling cycle.

A boiler installed above radiation level, or as required by the authority having jurisdiction, must be provided with a low water cutoff device either as a part of the boiler or at the time of boiler installation.

BNTH

PIPE SIZE,

BNTV

PIPE SIZE,

SIZE

INCHES

SIZE

INCHES

80

1

–

n/a

105

1

–

n/a

150

1

150

1¼

210

1¼

199

1¼

285

1¼

285

2

399

1¼

399

2

500

1½

500

2

600

1½

600

2

750

2

750

2

850

2

850

2

Table 9. Water Connection Pipe Sizes.

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Contents Installation and Operation Instructions DocumentInstallation and Operation Instructions for BRUTE ELITETABLE OF CONTENTS Brute Elite Control Setup and OperationSECTION General InformationSECTION Maintenance Trouble ShootingReplacement Parts SECTION Modes of OperationSECTION General Information 1.1 Introduction1.2 Model Identification Model NomenclatureFigure 1. Location of Components, Sizes Figure 2. Location of Components, SizesFigure 3. Location of Components, Size Figure 4. Location of Components, SizeFigure 5. Location of Components, Size Figure 6. Location of Components, SizeFigure 7. Location of Components, Sizes 750 and 1.4 Warranty 1.6 Dimensions1.3 Appliance Overview 1.5 UnpackingFigure 9. Dimensional Drawing, Sizes Dimensions are nominal and are shown in inches, cm2.1 Locating the Appliance Brute Elite is for indoor installations onlySECTION Locating the Appliance SECTION Venting and Combustion Air 3.1 Combustion Air3.1.1 Combustion Air From Room 3.1.2 Ducted Combustion AirTable 5. Required Exhaust Vent Material 3.2 VentingFigure 10. Combustion Air and Vent Through Roof 3.3 Locating Vent & Combustion Air Terminals 3.2.1 Venting Requirements Unique to CanadaA. exhaust vent terminal not included E. CPVC exhaust pipe section 80-500 not incl3.3.5 Installations in the Commonwealth of Massachusetts 3.3.2 Side Wall Combustion Air Terminal5. For concentric vent, follow instructions included with vent kit 3.3.3 Vertical Vent TerminalFigure 12. Combustion Air and Vent Through Side Wall 3.4 Common Vent Test 2. Approved Carbon Monoxide Detectors3. Signage 4. Inspection3. Refer to Tables 6A, 6B, 6C and 6D to size piping SECTION Gas Supply and Piping4.1 Gas Supply and Piping SECTION Pump Requirements 5.1 Brute Elite Boiler Flow and Head Requirements see Table5.2 Brute Elite Water Heater Flow and Head Requirements see Table Table 6A6A.2 BNTH Cold Water Make-Up SECTION 6A Water Connections - BNTH Boiler6A.1 BNTH System Piping Hot Supply Connections 6A.4 BNTH Suggested Piping Schematics 6A.3 Freeze Protection6A.5 Recognized Chemicals 1. Sentinel Performance Solutions Group 2. Hercules Chemical CompanyFigure 15. Hydronic Piping - Single Boiler zoning with circulators Brute Elite Figure 17. Hydronic Piping - Multiple Boilers zoning with circulators Brute Elite PagePage Brute Elite PagePage SECTION 6B 6B.1 BNTV Water Quality6B.2 Piping Requirements Water Connections - BNTV Water Heater6B.5 BNTV Suggested Piping Schematics 6B.3 Cold Water Make-Up6B.4 Freeze Protection 6B.6 BNTV Suggested PumpsFigure 25. DHW Piping, Two Heaters, One Vertical Tank Figure 26. DHW Piping, Two Heaters, Two Vertical TanksCaution Pump sizing must be based opon water hardness at job site7.1 Main Power SECTION Electrical Connections7.10 Lead Lag/ Cascading Wiring Connections 7.2 Pump Connections7.3 24Vac Transformer with Integral Circuit Breaker 7.4 Hydronic Call for HeatFigure 28. Lead-Lag / Cascading Wiring Connections 7.11 Wiring Diagrams see Figures 29 and Figure 29. Ladder DiagramFigure 30. Wiring Diagram all sizes 8.2 Ignition Control- Sequence of Events SECTION Brute Elite Control Setup and Operation8.1 Display Navigation 8.3 Modulation Control 8.5 Anti-Short Cycle ASC8.5 High Limit 8.7 Outlet Water Temperature8.12.5 Lead Lag Base Load Setting 8.13 Boiler Pump Interrupt8.12.1 Lead Lag Setpoint 8.12.2 Lead Lag Master/Slave Selection9.2 Hydronic Heating with Outdoor Reset 9.4 Hydronic Heating Using External Modulation ControlSECTION Modes of Operation 9.1 Hydronic Heating Demand9.5 Hydronic Heating Using Local Lead- Lag/Cascading Feature 9.7 Warm Weather Shutdown9.8 Domestic Hot Water Demand BNTV only Let’s consider the following example9.9 Domestic Hot Water Heating Using External Modulation Control 10.2 Operating the Burner and Set Up SECTION Operating Instructions10.1 Filling the Boiler System 10.2.1 Burner Operation10.2.2 Boiler Setup and Adjustment 10.3 Shutting Down Brute Elite10.4 To Restart Brute Elite 3. WAIT FIVE 5 MINUTESFigure 33B. Brute Elite Gas Valves 600, 750 and 80-285Figure 33A. Brute Elite Gas Valves 285, 399 and SECTION Maintenance 11.1 System Maintenance11.2 Appliance Maintenance and Component Description yearly, unless otherwise notedIgniters and sensors get hot and can cause burns or injury 11.2.4 Ignitor Assembly11.2.5 Flame Sensor 11.2.8 Heat Exchanger Coils 11.2.6 Transformer with Integral Circuit Breaker11.2.7 Blower SECTION Trouble Shooting 12.3 Error Codes - See Table11.2.9 Gas Pressure Switches optional 12.1 Sequence of OperationPROBLEM SOLUTIONcontinued next page CODE#Table 18. Error Codes see SectionSECTION Replacement Parts 13.2 Parts List13.1 General Information Jacket Components - See FigureGas Train Components - See Figure Heat Exchanger Components - See Figure Contact Customer Service at 800 900-9275 Electrical Components - See FigureFigure 35. Jacket Components Figure 36A. Internal Components, Sizes Figure 36B. Internal Components, SizesFigure 36C. Internal Components, Sizes Figure 37A. Gas Train Components, Sizes Figure 37B. Gas Train Components, Sizes Figure 38. Heat Exchanger Components Figure 39. Electrical Components Brute Elite Tech. Service 800 Service Parts 800Warranty Service 800 Ambler, PA
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