Crown Boiler 24-06, 24-11, 24-10, 24-08 Section V Service Instructions, Clean the Boiler Flueways

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SECTION V - SERVICE INSTRUCTIONS

DANGER

This boiler uses flammable gas, high voltage electricity, moving parts, and very hot water under high pressure. Assure that all gas and electric power supplies are off and that the water temperature is cool before attempting any disassembly or service.

More than one gas shut-off valve and electrical disconnect switch are used on the boiler. Assure that all gas valves and electrical disconnect switches are off before attempting any disassembly or service.

Do not attempt any service work if gas is present in the air in the vicinity of the boiler. Never modify, remove or tamper with any control device.

WARNING

This boiler must only be serviced and repaired by skilled and experienced service technicians.

If any controls are replaced, they must be replaced with identical models.

Read, understand and follow all the instructions and warnings contained in all the sections of this manual.

If any electrical wires are disconnected during service, clearly label the wires and assure that the wires are reconnected properly.

NEVER operate boiler without all sight glasses and brackets in place and securely fastened and sealed. Very HOT combustion gas may cause burn injury.

Read, understand and follow all the instructions and warnings contained in ALL of the component instruction manuals.

Assure that all safety and operating controls and components are operating properly before placing the boiler back in service.

A. GENERAL — Inspection should be conducted annually. Service as frequently as specified in paragraphs below. While service or maintenance is being done, electrical power to the boiler must be “off”.

B. CLEAN THE BOILER HEATING SURFACES & FLUE at least once each year, preferably at the end of the heating season.

1.CLEAN THE VENT SYSTEM — Vent system should be checked annually for:

a.Obstructions.

b.Accumulations of soot.

c.Deterioration of vent pipe or vent accessories due to condensation or other reasons.

d.Proper support — no sags, particularly in horizontal runs.

e.Tightness of joints.

f.Remove the smoke pipe. Remove all accumulations of soot with wire brush and vacuum. Remove all obstructions. Replace all deteriorated parts and support properly. Seal all joints.

2.CLEAN THE BOILER FLUEWAYS

a.Remove the jacket left side panels.

b.Loosen nuts securing the flue cleanout plates and remove the plates. The insulation should be removed with the plates taking care not to damage the insulation.

c.Using a 1¼” diameter wire or fibre bristle brush (36” handle) clean the flueways. Start at the top of each flueway opening and work down the pin rows using two or three horizontal strokes per row for best results.

3.CLEAN TOP OF BOILER SECTIONS

Remove the jacket top panel. Remove the top flue canopy cover or outlet assembly. Use a flashlight to inspect the upper portion of the flueways and top of castings for soot and debris. Heavy accumulations over 1/16” thick must be removed. Remove the canopy being careful not to damage the cerafelt strips. Brush and vacuum the upper flueways and tops of castings.

4.CLEAN THE FIREBOX

a.Disconnect fuel line(s) and remove burner and burner mounting plate.

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Contents Series Page Important Information Read Carefully Page Page Table of Contents Table of Contents Section I General Information Boiler RATINGS/DATA Section I General Information Locate the UnitBoiler Foundation Chimney or VentVents Faults & Suggestions Section II Cast Iron Block Assembly Assembly of Sections Manual DRAW- UPNipple Gauge Series 24 Section Arrangement Draw-Up Rods Alternating Pattern Manual Draw-up Center Section Channel Block Position Partial Block Draw-Up Hydraulic Draw-Up of Sections Section III Installation Instructions Canopy with Rear Flue Outlet Damper AssemblyBare Boiler Assembly Avoid Breathing Fiber Particulates and Dust Left Side Canopy Intermediate Bracket Mount Rear Observation Port Cover Refer to Figure Inspect ALL Boiler SealsSeries 24 Jacket Assembly Boiler Models 24-03 thru Burner Mounting Plate Refer to Figures 16 Mount Burner Adapter Plate to Burner Mounting PlatePurpose of Tappings Steam Boilers Steam Trim Steam Boilers Install Steam Trim This Is Intentionally Left Blank Purpose of Tappings Water Boilers Water Trim Water Boilers Install Water Trim Burner InstallationBoiler Piping Heating Applications Page Parallel Piping Conversion Recommendation 1 Use when Recommendation 2 Use when Recommendation 3 Use when Page Page Page BMounting Elevations M&M 150, 64 Float Low Water Cut-offs Schematic Tankless Heater Piping 24-08 24-09 Return Temperature Control and Components CCW Open to SystemWater Boiler Pressure Relief Valve Hook-Up Typical Boiler Wiring with RTC Front Typical Boiler with RTC Return Sensor Rear Starting Burner Always Inspect Installation BeforeSection IV Operating Instructions Fill Heating System with WaterFlame Failure Boil MIN Delay Test Controls Check Operation of High Limit ControlBoiler and System Cleaning Steam Boiler Boiler and System Cleaning Water Boilers Frequent Water Addition Oxygen CorrosionSection V Service Instructions Clean the Boiler FluewaysMaintenance of LOW Water Cutoff Devices General Maintenance Considerations OperationSection VI Burner Specifications OIL BurnersSection VII Repair Parts & Carton Contents Series 24 Master Parts List Section VII Repair Parts Jacket Carton Bare Boiler Assembly Section Joiner Carton Assy Rear Target Wall Carton Standard Steam Trim Carton Assy RTC Carton with Outdoor Reset Tankless Coil Components Boiler Water Section Viii Appendix Page Mechanical Page Mechanical Electrical Page Page Page Page Page Page Page Page Series 24 Boiler Circulator Selection Taco 20F Differential Boiler Recirculation Grundfos Circulating Pump Way Boiler Recirculation Bell and Gossett Circulating Pump Way Boiler Recirculation Armstrong Circulating Pump Way Appendix C Valve and Actuator Mounting Instructions ApplicationService Record PN 980417 S24 12/05
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