X Start-up and Checkout

WARNING

•Never attempt to fill a hot empty boiler.

•Never use a flame to check for gas leaks.

•Make sure that the area around the boiler is clear and free from combustible materials, gasoline, and other flam- mable vapors and liquids.

•If antifreeze is used in the system, it must be a nontoxic type such as propylene glycol.

NOTE

Safe lighting and other performance criteria were met with the gas manifold and control assembly provided on the boiler when the boiler underwent the tests specified in Z21.13.

Use the following procedure for initial start-up of the boiler:

1)Make sure that the boiler and system are filled with water.

2)Check all new gas piping for leaks and purge piping sections that are filled with air. See the National Fuel Gas Code for additional information on testing and purging gas lines.

3)Verify that vent system is complete and free of obstructions before attempting to fire boiler. Make sure that the silicone cure time called for in the vent assembly instructions has passed before firing boiler.

4)Inspect all wiring for loose or uninsulated connections.

5)Adjust thermostat to the highest setting.

6)Start the boiler using the lighting instructions on the opposite page.

7)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. Once a flame has been established for the first time, subsequent calls for burner operation should result in a flame on the first try.

8)Observe pilot burner flame. Pilot burner produces three flames. The center one should be a steady medium blue flame covering around 3/8” to ½” of spark electrode / flame rod (Figure 42).

9)Inspect the main burner flames visible through the observation port in burner access panel. The flame should be stable and mostly blue. No yellow tipping should be present; however, intermittent flecks of yellow and orange in the flame are normal (Figure 43).

10)Check entire gas train for leaks using soap and water or other approved leak detection method while boiler is firing. Fix any leaks found immediately.

11)Run gas valve safety shutdown test. With main burners firing, disconnect ignition cable from ignition module. Both pilot burner and main burners should stop firing.

48

Page 49 Page 51
Page 50
Image 50
Crown Boiler CWD060, CWD083, CWD220, CWD165, CWD138, CWD193, CWD245, CWD110 installation instructions Start-up and Checkout
Page 49 Page 51

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.
Top Page Image Contents