Table of Contents
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Boiler Manual
This manual must only be used by a qualified heating installer/service technician. BEFORE installing, read
all instructions in this manual and all other information shipped with the boiler. Perform steps in the order
given. Failure to comply could result in severe personal injury, death or substantial property damage.
Series 4
Oil-Fired Steam Boilers
• Installation
• Maintenance
• Startup
• Parts
Part number 550-142-330/0421
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Table of Contents
Related Manuals for Weil-McLain SGO-6
Summarization of Contents
Using this manual
Homeowner
Instructions for homeowners on manual usage.
Service technician
Instructions for service technicians on manual usage.
Routine maintenance schedule
Beginning each heating season
Actions for the start of the heating season.
Boiler shutdown
Procedure for shutting down the boiler.
Before installing boiler
Provide air for combustion and ventilation
Requirements for air supply for proper combustion.
Air contamination
Potential combustion air contaminants and their sources.
Start-Up
Check Daily
Daily checks for the boiler area and components.
Check Monthly
Monthly checks of venting and piping systems.
Periodically
Periodic checks for oil motors and low water cutoffs.
Operation
SGO with float-type low water cutoff
Operation procedures for boilers with float-type LWCO.
Operation (continued)
SGO with probe-type low water cutoff
Operation procedures for boilers with probe-type LWCO.
Install boiler - packaged boilers only
Place boiler
Steps for placing packaged boilers.
Perform hydrostatic pressure test
Procedure for conducting a hydrostatic pressure test.
Install boiler – Semi-packaged and Knocked-down boilers only
Place boiler
Steps for placing semi-packaged and knocked-down boilers.
Tankless heater, if used
Instructions for installing a tankless heater.
Install boiler – Semi-packaged and Knocked-down boilers only (continued)
Perform hydrostatic pressure test
Procedure for conducting hydrostatic pressure test.
Install boiler controls
Instructions for installing boiler controls.
Install burners and chimney - all boilers
Install burner
Instructions for installing the boiler burner.
General chimney requirements
Guidelines for general chimney requirements.
Connect steam piping
Install piping
Steps for installing steam piping systems.
Connect tankless heater piping
To pipe tankless heater
Instructions for piping the tankless heater.
Connect wiring – general information
General wiring requirements
General requirements for electrical wiring installations.
Burner wiring
Instructions for wiring the boiler burner.
Connect wiring – general information (continued)
Blocked vent shutoff switch
Installation and wiring of the blocked vent shutoff switch.
After installing BVSS switch, proceed as follows
Steps after installing the BVSS switch.
Connect wiring (Float-type LWCO)
Boiler Wiring
Wiring diagram for the boiler with float-type LWCO.
Connect wiring (Probe-type LWCO)
Boiler Wiring
Wiring diagram for the boiler with probe-type LWCO.
Connect wiring (Probe-type LWCO) (continued)
Blocked vent shutoff switch (BVSS), when required
Wiring for the BVSS when used without the OVD damper.
After installing BVSS switch, proceed as follows
Steps after installing the BVSS switch.
Connect oil piping
General oil piping requirements
Requirements for oil piping installation and location.
Start up – Steam Boiler Water Treatment
Steam Heating Installation Considerations
Factors influencing steam heating system installation.
Chlorides
Impact of chlorides on boiler water and lifespan.
Testing & Treatments
Procedure for testing water treatment chemicals.
Start up (continued)
Fill the system
Steps for filling the boiler system with water.
Skim steam boiler
Procedure for cleaning new steam boilers.
To place in operation
Final steps to place the boiler into operation.
Check out procedure
Check off Steps as completed
Checklist for verifying completed installation steps.
Service and maintenance
General description of control operation
Overview of how various controls operate.
Controls requiring annual service
Controls that need annual service and inspection.
Burner adjustments
Procedures for adjusting the boiler burner.
Service and maintenance (continued)
Cleaning boiler flue ways
Steps for cleaning the boiler's flue ways.
Boiler area
Checks for the boiler area regarding safety and contamination.
Service and maintenance (continued)
Low water cutoffs
Procedures for cleaning and testing low water cutoffs.
Check monthly
Monthly checks for the venting system.
Service and maintenance (continued)
Boiler and system piping
Inspecting boiler and system piping for leaks.
Boiler relief valve
Testing and maintenance of the boiler relief valve.
Replacement parts
Common jacket parts for all boilers
Common jacket parts available for all boilers.
Replacement parts (continued)
Item E Section replacement kit
Kit for replacing one section, includes hardware.
Item J Combustion chamber kit
Kit for combustion chamber components.
Item S Flue cap assembly
Part for flue cap assembly.
Blocked vent shutoff switch (Canada only)
Part for blocked vent shutoff switch for Canada.
Replacement parts (continued)
Item No. 2a Steam relief valve
Part for steam relief valve.
Item No. 9 Low water cutoff, float type
Part for float-type low water cutoff.
Item No. 21 OVD-7 Vent damper kit
Part for OVD-7 Vent damper kit.
Dimensions
SGO side with burner
Dimensional drawing of the SGO boiler side with burner.
SGO "A" front
Dimensional drawing of the SGO boiler front.
Handling ceramic fiber and fiberglass materials
REMOVAL OF COMBUSTION CHAMBER LINING OR BASE PANELS
Procedures for removing combustion chamber lining or base panels.
REMOVAL OF FIBERGLASS WOOL or INSTALLATION OF FIBERGLASS WOOL OR BASE PANELS:
Procedures for handling fiberglass wool or base panels.
Precautionary measures
Safety precautions for handling materials.
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