Crown Boiler 24-03, 24-11, 24-10, 24-08, 24-12, 24-06, 24-05, 24-09, 24-04, 24-07 Table of Contents

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TABLE OF CONTENTS - Continued
SECTION VI - BURNER SPECIFICATIONS
Beckett Burners (Table VI)	57
SECTION VII - REPAIR PARTS & CARTON CONTENTS
Regional Ofﬁce Directory	58
Jacket Assembly	60
Bare Boiler Assembly	62
Steam/Water Trim	65
RTC Related Components	66

SECTION VIII - APPENDIX

A. Application Drawings - Mechanical and Electrical

A1. 3-way RTC in Primary/Secondary – Heating Only/No DHW; with/without Outdoor reset

A2. 3-way RTC in Primary/Secondary – Heating/DHW with/without priority using Tankless coils and Outdoor reset.

A3. 3-way RTC in Primary/Secondary – Heating/DHW with/without priority using Indirect Water Heater and Outdoor reset.

A4. 3-way RTC in Primary/Secondary –Indirect Water Heater as load on primary loop without Outdoor reset.

A5. 3-way Multiple Boiler RTC in Primary/Secondary – Indirect Water Heater (or other heat exchanger) as Load on Primary Loop using Sequencer and Outdoor Reset.

A6. Tankless Application Only with boiler circulation loop. No building heating load.

A7. Indirect Water Heater Only with boiler circulation loop. No building heating load.

B.Boiler Circulator and Diverting Valve Selection Charts B1. S24, 20 and 40 ∆Τ − Taco

B2. S24, 20 and 40 ∆Τ − Grundfos

B3. S24, 20 and 40 ∆Τ − Bell and Gossett

B4. S24, 20 and 40 ∆Τ - Armstrong

C.Valve and Actuator Mounting Instructions

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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 Locate the Unit Section I General InformationChimney or Vent Boiler FoundationVents Faults & Suggestions Assembly of Sections Manual DRAW- UP Section II Cast Iron Block AssemblyNipple 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 Canopy with Rear Flue Outlet Damper Assembly Section III Installation InstructionsBare Boiler Assembly Avoid Breathing Fiber Particulates and Dust Left Side Canopy Intermediate Bracket Inspect ALL Boiler Seals Mount Rear Observation Port Cover Refer to FigureSeries 24 Jacket Assembly Boiler Models 24-03 thru Mount Burner Adapter Plate to Burner Mounting Plate Burner Mounting Plate Refer to Figures 16Purpose 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 CCW Open to System Return Temperature Control and ComponentsWater Boiler Pressure Relief Valve Hook-Up Typical Boiler Wiring with RTC Front Typical Boiler with RTC Return Sensor Rear Fill Heating System with Water Always Inspect Installation BeforeSection IV Operating Instructions Starting BurnerFlame Failure Boil MIN Delay Check Operation of High Limit Control Test ControlsBoiler and System Cleaning Steam Boiler Boiler and System Cleaning Water Boilers Oxygen Corrosion Frequent Water AdditionClean the Boiler Flueways Section V Service InstructionsMaintenance of LOW Water Cutoff Devices Operation General Maintenance ConsiderationsOIL Burners Section VI Burner SpecificationsSection 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 Application Appendix C Valve and Actuator Mounting InstructionsService Record PN 980417 S24 12/05