Crown Boiler CWD060, CWD083, CWD220, CWD165, CWD138, CWD193, CWD245, CWD110 Start-up and Checkout

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.

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