Bradford-White Corp BWCV External Staging Control Wiring, Internet Version for Reference Only

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5.3 External Staging Control Wiring

Internet Version for Reference Only

Copper Brute II

Page 19

 

 

 

 

Figure 8. Field Wiring Panel

Other Field Interlocks: To install other field- wired devices to interlock with the heater (louver switches, flow switches, etc.), remove the jumper between the “COM” and “NO” terminals and wire the device in series across these terminals. (See Section

5.3for important information about external staging controls and building automation systems.)

System Heat Demand: Remove the jumper across the “COM D” and “Ht D” terminals, and connect the zone pump or valve end switch, thermostat, aquastat, or other indication of system heat demand to these terminals. If no indication of a system heat demand will be provided, the jumper must remain in place. When jumpered, the temperature control will always see a heat demand, and the Copper Brute II pump (if equipped) or any pump with its contactor connected to the “PMP” and “PMP” terminals will run continuously. In addition, any device connected through the “HT OUT” and “LWCO GND” terminals for an external indication of the heat demand will run continuously. See section 6 for more information on the system heat demand for various modes of operation.

Refer to Figures 23 through 25 for field wiring of additional components.

5.3 External Staging Control Wiring

AVERTISSEMENTWARNING

Improper field wiring may result in fire or explosion which can cause property damage, severe injury, or death. Make only wiring connections which are in accordance with the Installation and Operation manual.

Manual backgroundAVERTISSEMENT

Un câblage incorrect lors de l’installation peut causer un incendie ou une explosion pouvant entraîner des dommages matériels, de graves blessures ou la mort. Ne faire seulement que les connexions conformes au Manuel d’installation et d’exploitation.

The wiring methods in this section must be used to connect an external staging control, such as a multiple heater control, building automation system, energy management system, etc.) Other wiring methods may be unsafe.

Figure 9 shows how to wire the external controller to the heater’s field wiring panel, which is located on the right side of the heater.

Model 1250, 1500, 1750 & 2000 (4-Stage Heater)

4 stage heater

4 stage heater

4 stage heater

4 stage heater

using 4 control

using 3 control

using 2 control

using 1 control

outputs

outputs

outputs

output

 

 

 

 

Model 1000 (3-Stage Heater)

3 stage heater

3 stage heater

3 stage heater

using 3 control

using 2 control

using 1 control

outputs

outputs

output

 

 

 

Model 750 & 500 (2-Stage Heater)

2 stage heater

2 stage heater

using 2 control

using 1 control

outputs

output

 

 

Figure 9. External Control Connection Wiring.

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Contents Copper Brute Internet Version for Reference OnlyInstallation and Operation Instructions for Installation and Operation InstructionsSECTION 9. Wiring Diagrams TABLE OF CONTENTSSECTION 7. Maintenance SECTION 8. Trouble Shooting1.1 Introduction SECTION General Information1.2 Model Identification 1.3 Warranty 1.4 Dimensions1.5 Locating the Appliance Figure 1. Dimensional Data 2.1 Combustion Air SECTION Venting and Combustion Air1.6 Locating Pump-Mounted Water Heater with Respect to Storage Tanks From Outside Wall2.1.2 Intake Combustion Air 2.2.3 Common Venting Systems 2.2 Venting2.2.1 Vent Categories 2.2.2 Category I VentFigure 3. Combustion Air and Vent Through Side Wall 2.3.2 Side Wall Combustion Air Terminal 2.3 Locating Vent & Combustion Air TerminalsImportant Note Massachusetts Code Requirement 2.3.1 Side Wall Vent Terminal2.3.4 Vertical Combustion Air Terminal 2.4 Common Vent Test2.5 Vent Terminals for Outdoor Units 2.3.3 Vertical Vent Terminal3.1 Gas Supply and Piping SECTION Gas Supply and Piping4.3 Water Flow Requirements - Water Heater SECTION Water Connections Copper Brute II Water Heater4.1 Water System Piping Water Heater 4.2 Hot Water Supply Piping - Water HeaterFigure 4. Water Heater Piping - One Heater, One Tank Table 8. Water Flow RequirementsFigure 5. Water Heater Piping - Multiple Heaters, One Tank Figure 6. Water Heater Piping - One Heater, Multiple Tanks Figure 7. Water Heater Piping - Multiple Heaters, Multiple Tanks 4.5 Freeze Protection - Water Heater 5.1 Main PowerSECTION Electrical Connections 4.4 Combined Water Heating potable and Space Heating - Water HeaterAVERTISSEMENT 5.3 External Staging Control Wiring6.1 Sequence of Operation SECTION Operating Instructions6.2 Programming the Temperature Control 6.2.3 Programming 6.2.1 System Piping “Primary Secondary Piping”“Parallel Piping” 6.2.2 Choosing the Mode6.3.3 for more information BOIL MAX Boiler Maximum Temperature Boiler Start BOIL START The BOIL Mechanical aquastat in a domestic hot water storage tank 6.2.4 Choosing the Mode for your ApplicationMode 5 Primary secondary piping with outdoor reset 6.3 Advanced Topics6.3.2 Staging Mode 6.3.1 Differential6.3.3 Boiler Minimum BOIL MIN 6.3.7 Set point Operation 6.3.4 Boiler Maximum BOIL MAX6.3.5 Boiler Target Temperature 6.3.6 Pump OperationOutdoor Design OUTDR DSGN - The 6.3.9 Outdoor Reset Operation6.3.10 External Heater Operation 6.3.12 Advanced Programming Mode 6.4 Operating the Burner and Set Up6.4.1 Set Up for 0 to 2500 Feet Altitude 6.3.11 Limit Controls6.6 To Restart the Copper Brute SECTION Maintenance7.1 System Maintenance 6.5 Shutting Down the Copper Brute7.2 Appliance Maintenance and Component Description 7.2.2 Filter 7.2.4 Manual Reset High Limit Control7.2.5 Automatic Reset High Limit Control 7.2.1 Burners7.2.11 Blowers 7.2.12 Flow Switch7.2.9 Ignition Sensors 7.2.10 Transformer8.3 Short Cycling SECTION Trouble Shooting8.1 Resolving Lockouts 8.2 Delayed Ignition - Possible CausesDESCRIPTION OF ERROR ERROR DISPLAYED8.6 Troubleshooting Copper Brute II Controls Figure 18. Copper Brute II 500 - 750 Ladder Diagram SECTION Wiring DiagramsFigure 19. Copper Brute II 1000 Ladder Diagram Figure 20. Copper Brute II 1250 - 2000 Ladder Diagram Figure 21. Copper Brute II 500 - 1000 Wiring Schematic Figure 22. Copper Brute II 1250 - 2000 Wiring Schematic Figure 23. Field Wiring Note Positions of field wiring terminals may vary, butterminal designations are as indicated MODE Reference OnlyWiring for Modes 1 Figure 24. FieldCopper Brute II 1250, 1500, 1750 & 2000 4-Stage Heater Version for Reference Only25. Field Wiring for Mode Internet
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