Heat Exchanger Cleaning Procedure

1)Turn off electrical power and gas supply to the boiler.

2)Disconnect the vent connector from the boiler.

3)Remove the blocked vent switch and the draft hood.

4)Remove the door panel and the top jacket panel.

5)Remove the burner access panels.

6)Remove the burners and inspect them for foreign debris and restrictions.

7)Clean the burners with a soft bristle brush and vacuum as necessary.

8)Remove the nuts and washers holding the flue collector onto the heat exchanger.

9)Remove the flue collector from the heat exchanger.

10)Clean the flue passageways using a stiff bristle brush. Be certain that all foreign material is removed from the gaps between the pins.

11)Clean the bottom surfaces of the heat exchanger.

12)Put a light in the combustion chamber and look through the flue passages from the top to verify that they have been thoroughly cleaned.

13)Replace the nuts and washers that hold down the flue collector.

14)Reseal the flue collector to the heat exchanger using furnace cement. The flue collector must be thoroughly sealed to the heat exchanger.

15)Reattach all the jacket components.

16)Reinstall burners, being careful to put the pilot main burner in its’ original location.

17)Reinstall the draft hood. Reinstall the blocked vent switch on the skirt of the draft hood as shown in Figure 16.

18)Reconnect the vent system including the optional vent damper (if previously installed).

WARNING

SOOT DEPOSITS IN THE FLUE PASSAGES ARE A SIGN THAT THE BOILER MAY BE OPERATING AT HIGH CARBON MONOXIDE (CO) LEVELS. AFTER CLEANING THE BOILER OF SOOT DEPOSITS, CHECK THE CO LEVEL IN THE FLUE GAS TO INSURE THAT THE BOILER IS OPERATING PROPERLY.

If it is necessary to check CO, use a combustion analyzer, or other instrument which is designed to measure CO in flue gas. A CO “sniffer” designed for testing CO levels in ambient air cannot be used to check boiler combustion. Take a flue gas sample by inserting a sample probe through a small (approx. 1/4”) hole drilled in the draft hood pipe below the skirt. Do not take a sample until the boiler has been firing for at least five minutes. Be sure to seal the sample hole after test.

A normal CO reading for a Series 16 boiler is less than 50ppm (0.005%). A reading of more than 100ppm (0.01%) is indicative of a combustion problem.

Some causes of excessive CO include:

•Incorrectly sized main burner orifice for the altitude at which boiler is installed

•Crooked or out-of-round orifice holes (never attempt to drill orifice for this boiler in the field)

•Partially plugged flue passages

•Improper manifold pressure

•Foreign material in burner venturis or burner ports

•Leak in seal between flue collector and heat exchanger

•Inadequate supply of combustion air

•Draft hood which has been cut or modified

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Crown Boiler 16-325 500506 manual Heat Exchanger Cleaning Procedure, 3836
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16-325 500506 specifications

The Crown Boiler 16-325 500506 is a highly reliable heating solution designed for residential and light commercial applications. Known for its robust construction and advanced technologies, this boiler is engineered to deliver efficient heating while ensuring longevity and minimal maintenance.

One of the standout features of the Crown Boiler 16-325 is its durable steel construction, which is essential for handling the high temperatures and pressures involved in heating systems. The boiler is typically equipped with a cast iron heat exchanger, known for its excellent heat retention and distribution capabilities. This ensures that the system heats up quickly and maintains consistent temperatures throughout the space.

The boiler's capacity to produce 325,000 BTUs makes it suitable for larger homes or commercial buildings with significant heating demands. Its high input capacity allows for effective operation in areas where traditional systems may struggle to keep up with heating requirements. The Crown Boiler 16-325 employs a forced hot water system, which circulates water through pipes and radiators, providing uniform heat and comfort in indoor spaces.

A significant technological advancement in this model is its integrated control system. The advanced control module automates burner operation, ensuring optimal performance while minimizing energy consumption. This technology not only enhances efficiency but also helps in reducing operational costs, making it a cost-effective choice for users.

Moreover, the Crown Boiler 16-325 is designed with ease of installation and maintenance in mind. It features convenient access panels that simplify the maintenance process, allowing technicians to perform service checks and repairs without extensive downtime. This attribute is particularly beneficial for property managers or homeowners looking for a hassle-free heating solution.

In terms of safety features, the boiler is equipped with a pressure relief valve and a low-water cutoff switch, ensuring safe operation while protecting against potential hazards associated with overheating or lack of water.

Overall, the Crown Boiler 16-325 500506 is a powerful and efficient heating solution that excels in durability and performance. With its advanced technologies, substantial heating capacity, and user-friendly design, it represents an excellent choice for those seeking a reliable heating system that combines efficiency with long-term operational savings.
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