Crown Boiler BWC Series installation instructions BWC Burner

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7)Start the boiler using the lighting instructions on page 39. After the boiler is powered up, it should go through the following sequence.

Sequence

Display

Meaning

1

U.125 or Blank

Checking internal software (power-up only)

2

0.SWT

Boiler in standby. SWT = Supply Water Temp. No call for heat.

(After call for heat from heating thermostat)

3

A.SWT

Self-Check on Start-up

4

5.SWT

Blower and circulator on. Checking for adequate air flow.

5

1.SWT

Prepurge

6

2.SWT

Trial for ignition

7

3.SWT

Flame established. Boiler responding to a call for heat.

8)Upon initial start-up, the gas train will be filled with air. Even if the gas line has been completely purged of air, it may take several tries for ignition before a flame is established. If more than 5 tries for ignition are needed, it will be necessary to press the reset button to restart the boiler. Once a flame has been established for the first time, subsequent calls for burner operation should result in a flame on the first try.

9)Inspect the flame visible through the window. On high fire the flame should be stable and mostly blue (Fig.10.1). No yellow tipping should be present; however, intermittent flecks of yellow and orange in the flame are normal.

Figure 10.1: BWC Burner

10)Check the inlet pressure and adjust if necessary. Verify that the inlet pressure is between the upper and lower limits shown on the rating plate with all gas appliances on and off.

WARNING

THE CORRECT OUTLET PRESSURE FOR THE GAS VALVE HAS BEEN FACTORY SET AND REQUIRES NO FIELD ADJUSTMENT. THIS SETTING IS SATISFACTORY FOR BOTH NATURAL GAS AND PROPANE. ATTEMPTING TO ADJUST THE OUTLET PRES- SURE MAY RESULT IN DAMAGE TO THE GAS VALVE AND CAUSE PROPERTY DAM- AGE, PERSONAL INJURY OR LOSS OF LIFE.

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Contents BWC Series Page VII Product Description II SpecificationsIII Before Installing IV Locating the BoilerMinimum Clearance To Combustible Material Air for Ventilation Page VI Venting Vent System DesignHorizontal Direct Venting Vent Options 1,2 2a Summary of Horizontal Venting Options 3c Positioning Vent Terminal Under Overhangs Vertical Direct Vent System Vent Options 6 2b Summary of Vertical Venting Options VENT/ AIR Intake Fitting Equivalent Length Vent / Intake System Assembly Removing an Existing Boiler From a Common Chimney7a STAR-34 Connection to Vent Collar Z-VENT III Connection to Vent Collar SAF-T Vent Ezseal Connection to Vent Collar 10 Fasnseal Connection to Vent Collar 11 Condensate Piping Arrangement VII Gas Piping Gas Connection To BoilerGeneral System Piping Precautions Viii System PipingSystem Design Method 1 Primary/Secondary Piping Boiler in Secondary Loop Piping Method #1 Heat Only 4a Piping Method #1 Secondary Loop Piping Shaded Pipe and Circulator Sizing for Boiler Loop Fitting Equivalent Lengths Method 2 Primary/Secondary Piping Boiler in Primary Loop Piping Method #2 Heat Only 10a Piping Method #2 Secondary Loop Piping Bolded Page Flow GPM Piping for Special Situations 14 Chiller Piping IX Wiring Wiring Connections Diagram Ladder Diagram Page Start-up and Checkout For Your Safety Read Before Lighting BWC Series Lighting and Operating InstructionsBWC Burner Gas Valve Detail Typical CO2/O2 Combustion ReadingsPage Normal Display In Standby Mode XI OperationPage 170 Boiler Status First Digit Boiler StatusOutdoor Reset Curve XII. Service and Maintenance ContinuouslyPage XIII. Troubleshooting No Error Code DisplayedSoft Lockout Codes Displayed Code Condition Possible CausesHard Lockout Codes Displayed XIV Parts BWC Replacement Parts List TBD Page Page Page Page Ignition Electrode Gasket, 5mm 240011 Page BWC Replacement Parts List Page Page Page Page Page PN 980040 BWC 08/05

BWC Series specifications

The Crown Boiler BWC Series is a modern choice for heating needs, renowned for its efficiency and robust design. This series offers a range of residential and light commercial heating applicabilities, ensuring both comfort and reliability for users.

One of the standout features of the BWC Series is its efficiency. Crown Boilers utilize advanced technologies to maximize energy output while minimizing fuel consumption. With an AFUE (Annual Fuel Utilization Efficiency) rating often exceeding 90%, users can expect significant cost savings on their energy bills over time.

The BWC Series employs a high-quality, stainless steel heat exchanger, which not only enhances performance but also extends the lifespan of the boiler. This heat exchanger is designed to transfer heat efficiently, ensuring that the maximum amount of energy from the fuel is converted into usable heat. Additionally, the design helps to prevent corrosion and maintain system integrity over years of usage.

For technological advancements, the BWC Series incorporates a modulating gas valve which allows for precise control over the boiler's operation. This feature enables the system to adjust its output based on the heating demands of the home, resulting in improved energy efficiency and consistent comfort levels. Moreover, this modulating technology reduces the frequency of cycling, thereby prolonging the lifespan of the unit and minimizing wear and tear.

Another characteristic of the Crown Boiler BWC Series is its user-friendly interface. The boiler is equipped with a simple control panel that allows for easy monitoring and adjustment of settings. This accessibility is essential for users who want to manage their heating system without the need for extensive technical knowledge.

In terms of installation and maintenance, the BWC Series is designed with convenience in mind. Its compact footprint allows it to fit comfortably in a variety of spaces, making it an ideal choice for homes with limited installation areas. Additionally, Crown Boiler's commitment to high manufacturing standards ensures that the units require minimal maintenance, providing peace of mind to homeowners.

Overall, the Crown Boiler BWC Series is an excellent solution for those seeking efficient, reliable heating. Its combination of advanced technology, quality construction, and user-friendly design makes it an attractive option for any residential or light commercial application. Whether replacing an old system or installing a new one, the BWC Series delivers comfort and performance that can be depended upon.
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