Crown Boiler CWD138, CWD083, CWD220, CWD060, CWD165, CWD193, CWD245, CWD110 Pilot Burner Flame

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WARNING

Failure to follow the following procedure exactly could result in over-firing of the boiler and a carbon monoxide hazard.

12)Check the manifold pressure and adjust if necessary. To do this, use the following procedure:

a)Connect a manometer to the line pressure tap on the gas valve (see Figure 44).

b)Check the line pressure with all gas appliances on and off. The line pressure at the boiler must be within the following limits regardless of what combination of appliances is firing:

Line Press (inches w.c.)

Natural Gas

LP Gas

Minimum

5.0

11.0

Maximum

14.0

13.0

If the line pressure falls outside of these limits, find and correct the cause of the problem before proceeding further.

c)Disconnect the silicone regulator tube from the hose barb on the gas valve (Figure 45).

d)Connect a manometer to the manifold (outlet) pressure tap on the gas valve (Figure 44).

e)Read the manifold pressure. It should be set at:

Manifold Press. (inches w.c.)

Natural Gas

LP Gas

3.5

10.0

e)If a manifold pressure adjustment is needed, make the adjustment by turning the regulator screw (see Figure 44) clockwise to raise the pressure and counter-clockwise to reduce the pressure. If a manifold pressure adjustment is made, recheck the line pressure to be certain that it is still within acceptable limits. Replace the cover screw on the regulator.

f)Reconnect the silicone regulator tube disconnected in Step (c)

13)Test thermostat operation while the boiler is running. Turn the thermostat to the lowest setting. Circulator should stop running. Raise the thermostat back to the highest setting. Circulator should restart. The pilot burner and main burners should relight.

14)Verify high limit operation. Allow the boiler water temperature to increase to high limit setting. Circulator should continue running and pilot burner and main burners should stop firing. When water temperature drops below the limit setting, the pilot burner and main burners should relight.

15)After the boiler has operated for approximately 30 minutes, check the boiler and heating system piping for leaks. Repair any leaks found at once.

16)Inspect the vent system for flue gas leaks. Repair any leaks found before leaving the boiler in operation.

FIGURE 42: PILOT BURNER FLAME

FIGURE 43: MAIN BURNER FLAME

 

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Contents CWD Series Table of Contents Product Description II SpecificationsIII Before Installing IV Locating the BoilerClearances When Combustion AIR is Obtained from Boiler Room Air for Combustion and Ventilation Clearances from Vent Piping to Combustible ConstructionPage If Indoor Combustion Air is Used, Provide Air as Follows ALL AIR from Outside Using Ventilated Crawl Space and Attic ALL AIR from Outside Using Openings Into Boiler Room VI Venting Vent System DesignSummary of Horizontal Venting Options Page Horizontal Direct Exhaust Vent System Vent Options 4,5 Page Summary of Vertical Venting Options Vertical NON-COAXIAL Direct Vent System Vent Options 6 Summary of Vertical Coaxial Venting Options Page Permissible Vent Systems and Principle Vent Components Vent Fitting Removing an Existing Boiler From a Common ChimneyAIR Intake Fitting Horizontal Terminal Offsets Positioning Vent Terminal Under Overhangs Vent / Intake System Assembly USE of Condensate TrapsFAN Outlet Orifice Crown Coaxial Terminal Exploded View CORR/GUARD Connection to Vent Collar Vent III Connection to Vent Collar SAF-T Vent Ezseal Connection to Vent Collar Fasnseal Connection to Vent Collar FSA-SWDW3 Page Condensate TRAP/DRAIN Detail VII Gas Piping GAS Connection to BoilerViii System Piping Standard PipingPiping for Special Situations Basic Piping Bypass Piping Chiller Piping IX Wiring CB502 System Single Zone WiringCB502 Control System Single Zone Field Wiring CB502 System Wiring Variations CB502 Control System Sequence of OperationCB502 Control System Field Wiring for TWO Circulator Zones CB502 Control System Internal Ladder Diagram CB502 Control System Internal Connection Diagram R8285 Control System Wiring Variations R8285 Control System Single Zone WiringR8285 Control System Sequence of Operation R8285 Control System Single Zone Field Wiring R8285 Control System Zone Valve Field Wiring R8285 Control System Internal Connection Diagram Start-up and Checkout For Your Safety Read Before Operating Pilot Burner Flame GAS Valve XI Service and Maintenance Heat Exchanger Cleaning Procedure Service Notes Pressure Switch Settings Measuring Pressure Across Pressure Switch XII Troubleshooting PWR DHW Limit 24V GND on ign. module? Thermostat calls for heat Circulator Pilot Main Start Xiii Parts BLOCK, BASE, Flue Collector Components Page Burner Tray Components Page Jacket Components Page Common Controls & Trim Page Page Page Crown

CWD193, CWD165, CWD245, CWD220, CWD110 specifications

Crown Boiler Company is well-known for its commitment to quality and performance in the heating industry. Among its extensive range of products, the Crown Boiler CWD series stands out for its reliability and efficiency. This series includes models CWD060, CWD083, CWD110, CWD138, and CWD220, each designed to meet diverse heating needs in residential and commercial applications.

One of the main features of the CWD series is its durable construction. Made with high-quality materials, these boilers are built to withstand the test of time. The cast iron heat exchanger delivers exceptional heat retention and efficiency, ensuring optimal performance even in demanding conditions. Additionally, the CWD models are equipped with a reliable standing pilot ignition system, which enhances user safety and operational reliability.

Another important characteristic of the Crown CWD series is its versatility in fuel options. These boilers can operate on either natural gas or propane, providing flexibility to homeowners and businesses depending on their preferred energy source. The ability to easily switch fuels makes these units adaptable to various heating applications, maximizing convenience for users.

Efficiency is a cornerstone of the Crown Boiler CWD series. With an AFUE rating of up to 85%, these boilers deliver substantial cost savings over the heating season. Their efficient operation not only lowers energy bills but also contributes to a reduced environmental impact, which is increasingly important in today’s energy-conscious world.

Crown’s innovative design features also include a low water cut-off and a built-in draft hood. The low water cut-off ensures safe operation by preventing the boiler from running dry, while the draft hood allows for optimal venting capabilities, minimizing the risk of dangerous flue gas build-up.

Maintenance is straightforward with the CWD series, thanks to its easy-access design. Routine service and inspections can be performed with minimal disruption, ensuring that the units maintain peak performance over their lifespan.

The Crown Boiler CWD060, CWD083, CWD110, CWD138, and CWD220 models exemplify the brand’s dedication to delivering high-quality heating solutions. With their impressive efficiency ratings, durable construction, versatile fuel options, and user-friendly features, these boilers represent a smart investment for anyone looking to enhance heating reliability and comfort in their space.
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