Crown Boiler BWC Series installation instructions III Before Installing, IV Locating the Boiler

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IIIBefore Installing

1)Safe, reliable operation of this boiler depends upon installation by a professional heating contractor in strict accordance with this manual and the authority having jurisdiction.

•In the absence of an authority having jurisdiction, installation must be in accordance with this manual and the National Fuel Gas Code, ANSI Z223.1.

•Where required by the authority having jurisdiction, this installation must conform to the Standard for Controls and Safety Devices for Automatically Fired Boilers (ANSI/ASME CSD-1).

2)BWC boilers utilize aluminum heat exchangers constructed, tested, and stamped in accordance with ASME Boiler and Pressure Vessel Code Case 2382-2. Some jurisdictions which require ASME boiler construction do not recognize this Code Case and may not approve the installation of an aluminum boiler. Consult the author- ity having jurisdiction before installing this boiler.

3)Read Section VI to verify that the maximum combustion air and exhaust pipe lengths will not be exceeded in the planned installation. Also verify that the vent terminal can be located in accordance with Section VII.

4)Make sure that the boiler is correctly sized:

•For heating systems employing convection radiation (baseboard or radiators), use an industry accepted sizing method such as the I=B=R Heat Loss Calculation Guide (Pub. #H21 or #H22) published by the Hydronics Institute in Berkely Heights, NJ.

•For new radiant heating systems, refer to the radiant tubing manufacturer’s boiler sizing guidelines.

•For systems including a Crown Mega-Stor indirect water heater, size the boiler to have either the DOE Heating Capacity required for the Mega-Stor or the net rating required for the heating system, whichever results in the larger boiler.

•For systems that incorporate other indirect water heaters, refer to the indirect water heater manufacturer’s instructions for boiler output requirements.

5)Make sure that the boiler received is configured for the correct gas (natural or LP).

6)Make sure that the boiler is configured for use at the altitude at which it is to be installed.

NOTICE

This product must be installed by a licensed plumber or gas fitter when installed within the Commonwealth of Massachusetts. See Appendix A for additional important information about installing this product within the Commonwealth of Massachusetts.

IV Locating the Boiler

1)Observe the minimum clearances shown in Figure 4.1. These clearances apply to both combustible and non- combustible materials. Observe the minimum clearances to combustibles for vent pipe shown in Table 4.2.

2)Note the recommended service clearances in Figure 4.1. The recommended service clearances may be re- duced to the minimum combustible clearances with the understanding that servicing the boiler will become increasingly difficult as the clearance is reduced.

3)Boiler may be installed on non-carpeted combustible surface.

4)The relief valve must be installed in the factory specified location.

5)The boiler should be located so as to minimize the length of the vent system.

6)The combustion air piping must terminate where outdoor air is available for combustion and away from areas that will contaminate combustion air. Avoid areas near chemical products containing chlorine, chloride based salts, chloro/fluorocarbons, paint removers, cleaning solvents and detergents.

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Contents BWC Series Page VII II Specifications Product DescriptionIV Locating the Boiler III Before InstallingMinimum Clearance To Combustible Material Air for Ventilation Page Vent System Design VI VentingHorizontal 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 Removing an Existing Boiler From a Common Chimney Vent / Intake System Assembly7a 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 Gas Connection To Boiler VII Gas PipingSystem Design General System Piping PrecautionsViii System Piping 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 BWC Series Lighting and Operating Instructions For Your Safety Read Before LightingBWC Burner Typical CO2/O2 Combustion Readings Gas Valve DetailPage XI Operation Normal Display In Standby ModePage 170 First Digit Boiler Status Boiler StatusOutdoor Reset Curve Continuously XII. Service and MaintenancePage No Error Code Displayed XIII. TroubleshootingCode Condition Possible Causes Soft Lockout Codes DisplayedHard 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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