XI Service and Maintenance

The following routine maintenance should be performed on an annual basis:

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

2)Remove the burner tray. To do this:

a)Remove the intake cover.

b)Remove the four Allen head screws holding the elbow ﬂange onto the gas valve.

c)Remove the three 10-32 screws holding the manifold gasket plate to the intake box.

d)Remove the four 5-16 nuts holding the burner tray in the boiler.

f)Carefully remove the burner assembly being careful not to damage the ﬁredoor insulation or the manifold gasket.

3)Inspect the ﬂue passages for signs of blockage. If there is any carbon in the combustion chamber or the ﬂue passages, clean the heat exchanger before proceeding further. See the cleaning procedure below.

4)Remove any debris found in the combustion chamber, being careful not to disturb combustion chamber insulation.

5)Inspect and clean the burners. Clean the burners by ﬁrst brushing the ports with a soft bristle brush and then vacuuming out any debris through the venturi opening. If burners show signs of deterioration, they should be replaced (some discoloration around the burner ports is normal).

6)Inspect the pilot assembly. Clean any deposits found on the electrode and grounding strap. The ideal gap between the electrode and the ground strap is 1/8”. Inspect the porcelain for cracks or other deterioration. Replace pilot assembly if deterioration is found. Inspect the ignition cable insulation for cracks or other deterioration. If deterioration is found, replace cable assembly.

7)Inspect the combustion chamber insulation for deterioration. Replace insulation if necessary.

8)Inspect all boiler wiring for loose connections or deterioration.

9)Inspect the vent system:

• Make sure that the vent system is free of obstructions.

• Make sure that all vent system supports are intact.

• Inspect joints for signs of condensate or ﬂue gas leakage.

• Inspect venting components for corrosion or other deterioration. Replace any defective vent components.

10)Inspect the boiler and hydronic system for leaks.

11)Place the boiler back in operation using the procedure outlined in Part X. Check the pilot line and any other gas piping disturbed during the inspection process for leaks.

CAUTION

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

CAUTION

Water leaks can cause severe corrosion damage to the boiler or other system components. Repair any leaks found immediately.

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.