Crown Boiler 24-04, 24-11, 24-10, 24-08, 24-12, 24-06, 24-05, 24-09 Steam Boilers Install Steam Trim

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H.STEAM BOILERS — INSTALL STEAM TRIM

Items for steam trim are located in the steam trim carton (except for the separately ordered low water cutoff and tankless heater control). Figures 25a and 25b show the proper tappings for each item.

1.Install the gauge glass set.

2.Install the low water cut-off. Follow manufacturer’s instructions furnished with control.

3.Install the pressure limit control as shown in Figure 25b.

4.Level the pressure limit control by carefully bending the syphon until the control’s leveling indicator hangs freely with its pointer directly over the index mark inside the back of the case.

5.Install the steam gauge using the ½” NPT x ¼” FPT hex bushing.

6.Install the safety valve as shown in Figures 25a and 40a. Safety valve must be installed in vertical position.

7.For boilers with tankless heaters, install the operating control in an unused tapping through one of the heater plates.

8.Plug extra boiler tappings.

9.Install required bottom blowoff/drain valve and connecting piping (supplied by others) per minimum piping requirements for steam boilers. See Figure 25b.

NOTICE

Some L404 Pressure Limits contain mercury in a sealed tube. Do not place limit in the trash at the end of its useful life.

If this limit is replacing a limit that contains mercury in a sealed tube, do not place your old limit in the trash.

Contact your local waste management authority for instructions regarding recycling and the proper disposal of this limit, or of an old limit containing mercury in a sealed tube.

If you have questions, call Honeywell Inc. at 1-800-468-1502.

WARNING

Safety valve discharge piping must be piped to within six (6) inches of floor or to floor drain to eliminate potential of severe burns. Do not pipe in any area where freezing could occur. Do not install any shut-off valves, plugs or caps in discharge piping.

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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 Burner Installation Water Boilers Install Water TrimBoiler 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 Always Inspect Installation Before Section IV Operating InstructionsStarting Burner 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