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Part number 550-142-330/0421
3
SGO
OIL-FIRED NATURAL DRAFT STEAM BOILER — SERIES 4 — Boiler Manual
HOMEOWNERandSERVICETECHNICIAN—readandfollowcompletely.
Contents
Usingthismanual.....................2
When calling or writing about the boiler . . . . . . . .2
Packaged, Semi-packaged and Knocked-down boilers 2
Hazarddenitions.....................2
Contents..........................3
Readthisrst!......................4
Routinemaintenanceschedule..............5
Beginning each heating season . . . . . . . . . . . .5
Daily during heating season . . . . . . . . . . . . . .5
Weekly during heating season . . . . . . . . . . . . .5
Periodically during heating season . . . . . . . . . .5
End of heating season . . . . . . . . . . . . . . . . .5
Boiler shutdown . . . . . . . . . . . . . . . . . . . .5
Pleasereadthisbeforeproceeding...........6
Start-Up . . . . . . . . . . . . . . . . . . . . . . . .6
Check Daily . . . . . . . . . . . . . . . . . . . . . . .6
Check Monthly . . . . . . . . . . . . . . . . . . . . .6
Check Periodically . . . . . . . . . . . . . . . . . . .6
Troubleshooting. . . . . . . . . . . . . . . . . . . . . .7
Beforeinstallingboiler..................8
Installations must comply with . . . . . . . . . . . . .8
Before selecting boiler location . . . . . . . . . . . .8
Provide clearances around boiler (see Figure 2) . . .8
Provide air for combustion and ventilation . . . . . .9
Lay a foundation, if needed . . . . . . . . . . . . . .9
Air contamination . . . . . . . . . . . . . . . . . . . 10
Operation.........................11
SGO with float-type low water cutoff . . . . . . . . 11
SGO with probe-type low water cutoff. . . . . . . . 12
Installboiler-Packaged boilers only...........13
Place boiler . . . . . . . . . . . . . . . . . . . . . .13
Perform hydrostatic pressure test . . . . . . . . . .13
Installboiler-Semi-packaged & Knocked-down boilers14
Place boiler . . . . . . . . . . . . . . . . . . . . . .14
Tankless heater, if used. . . . . . . . . . . . . . . . 14
Perform hydrostatic pressure test . . . . . . . . . .16
Install jacket (Knocked-down boilers only) . . . . . 16
Install boiler controls . . . . . . . . . . . . . . . . .16
Installburnerandchimney—allboilers . . . . . . .18
Install burner (also refer to instructions
packed with burner) . . . . . . . . . . . . . . . . . 18
General chimney requirements. . . . . . . . . . . . 18
Connectbreeching...................18
Connect breeching . . . . . . . . . . . . . . . . . .18
Connectsteampiping. . . . . . . . . . . . . . . . . .20
General piping information . . . . . . . . . . . . . . 20
Install piping . . . . . . . . . . . . . . . . . . . . . 20
To connect SGO boilers to indirect-fired
water heaters . . . . . . . . . . . . . . . . . . . . .20
Optional reservoir piping . . . . . . . . . . . . . . .23
Connecttanklessheaterpiping . . . . . . . . . . . .24
To pipe tankless heater. . . . . . . . . . . . . . . . 24
Connectwiring—generalinformation........26
General wiring requirements . . . . . . . . . . . . .26
Thermostat wiring . . . . . . . . . . . . . . . . . . 26
Junction box (furnished) . . . . . . . . . . . . . . .26
Burner wiring . . . . . . . . . . . . . . . . . . . . .26
High temperature limit . . . . . . . . . . . . . . . . 26
Blocked vent shutoff switch . . . . . . . . . . . . . 27
Connectwiring(Float-typeLWCO)...........28
Blocked vent shutoff switch (BVSS), when required 29
Connectwiring(Probe-typeLWCO)..........30
Blocked vent shutoff switch (BVSS), when required 31
OVD Vent damper wiring . . . . . . . . . . . . . . .32
Connectoilpiping. . . . . . . . . . . . . . . . . . . .32
General oil piping requirements . . . . . . . . . . .32
Oil piping connection at burner . . . . . . . . . . . 32
Startup..........................33
Steam water treatment . . . . . . . . . . . . . . . . 33
Fill the system . . . . . . . . . . . . . . . . . . . . 34
Tips for steam systems. . . . . . . . . . . . . . . . 34
Skim steam boiler. . . . . . . . . . . . . . . . . . . 34
To place in operation . . . . . . . . . . . . . . . . .34
Checkoutprocedure . . . . . . . . . . . . . . . . . .35
Check off “Steps” as completed . . . . . . . . . .35
Installationandservicecerticate. . . . . . . . . . .35
Annualservicechecklist. . . . . . . . . . . . . . . .36
Serviceandmaintenance. . . . . . . . . . . . . . . .37
General description of control operation . . . . . . 37
Burner adjustments . . . . . . . . . . . . . . . . . 37
Controls requiring annual service . . . . . . . . . . 37
Cleaning boiler flue ways. . . . . . . . . . . . . . . 38
Inspect . . . . . . . . . . . . . . . . . . . . . . . . .38
Reported problems . . . . . . . . . . . . . . . . . . 38
Boiler area . . . . . . . . . . . . . . . . . . . . . . 38
Piping . . . . . . . . . . . . . . . . . . . . . . . . .38
Service . . . . . . . . . . . . . . . . . . . . . . . . .39
Check/test . . . . . . . . . . . . . . . . . . . . . . .39
Check monthly . . . . . . . . . . . . . . . . . . . . . 39
Boiler and system piping . . . . . . . . . . . . . . . 40
Review with owner. . . . . . . . . . . . . . . . . . . 40
Boiler relief valve. . . . . . . . . . . . . . . . . . . . 40
Replacementparts...................41
Dimensions.......................46
Ratings..........................47
Handlingceramicberandberglassmaterials...48
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