Burnham IN10 manual

Page 33

I.Steam Boiler with Intermittent Ignition (EI) and Probe Low Water Cutoff. See Figure 36.

1.Normal Operation

a.Thermostat calls for heat. Thermostat Isolation Relay is energized, closing contacts.

b.Vent Damper (if used) opens as stated in Vent Damper Sequence of Operation.

c. Ignition Module is energized. Pilot Valve opens and Igniter is energized to ignite Pilot Burner.

d.Sensor proves presence of pilot flame. Main

Valve(s) opens and ignites Main Burners.

e. After Thermostat is satisfied Ignition Module is de-energized, extinguishing pilot and main flame. Vent Damper (if used) closes.

2.Safety Shutdown

a. Limit: Automatically interrupts main burner operation when steam pressure exceeds set point. Maximum allowable pressure is 15 psi. Normal operation resumes when system pressure falls below set point.

b. Low Water Cutoff (LWCO): Automatically interrupts main burner operation when surface of boiler water falls to lowest permissible operating

level. Normal operation resumes when water returns to normal level.

c. Blocked Vent Switch. Automatically interrupts

main burner operation when excessive vent system blockage occurs. Control is a multiple use device. If blocked vent switch is activated do not attempt to place boiler in operation. Correct source of blockage and reset blocked vent switch.

d. Flame Roll-out Switch. Automatically interrupts boiler operation when flames or excessive heat are present in vestibule. Control is single use device. If flame roll-out switch is activated do not attempt to place boiler in operation. Correct source of blockage and replace flame roll-out switch.

e. Igniter/Sensor: senses pilot flame and causes ignition module to turn off main burner and pilot burner gas flow should pilot burner flame extinguish. Five to six minutes after shutdown, Ignition Module restarts ignition sequence.

For Electronic Ignition Trouble Shooting Guide, see Page 65. For LED Status Codes, see Tables 8 and 9 on pages 55 and 56.

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Contents 8141049R26-10/08 Price $5.00 IndependencePage Page Dimensional Drawing Table of Contents Probe L.W.C.O Float L.W.C.O Tankless Heater Pre-Installation Clearance to Combustible Materials II. Knocked-Down Boiler Assembly Install Base-Burner-Manifold AssemblyInstall assembled cast iron sections on base assembly Canopy Gasket Installation Install CanopyCombustion Chamber Intermittent Ignition EI Install Ignition Module Install Blocked Vent Switch with sheet metal screwsInstall Trim and Controls III. Semi-Pak Boiler AssemblyRemove Crate Steam Boiler with Probe Low Water CutoffWater Boiler Junction Box and Mounting Bracket AssemblyIV. Packaged Boiler Assembly Install Jacket Front PanelRemove Jacket Front Panel. See Figure Piping and Trim Page Recommended Water Piping for Circulator Zoned Heating System Recommended Water Piping for Zone Valve Zoned Heating System Recommended Piping for Indirect Water Heater Page VI. Gas Piping Rated InputConnect boiler gas valve to gas supply system Specific Gravity Correction Factors for Natural Gas Fitting Equivalent LengthsBoiler Equipped With Vent Damper VII. VentingIf an Existing Boiler is Removed Typical Vent InstallationVIII. Electrical Wire Vent Damper if usedAlliance Indirect Water Heater if used Thermostat Heat Anticipator SettingsVent Damper Harness to Limit This page Left Intentionally Blank Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Fill boiler with water IX. System Start-upPrepare to check operation Follow Lighting or Operating InstructionsPage Page Page Page Ignition Module Terminal Cross-Reference Ignition Module Wiring Ladder Diagram Terminal DesignationOFF Green LED Status CodesPilot Burner Flame, Honeywell Q350 Check low water cutoff steam only Adjust gas input rate to boiler. Natural GasDo not drain below gauge glass Check LimitInput Rate Adjust gas input rate to boiler. LP/PropanePage Page Maintenance of Low Water Cutoff Service InstructionsClean Boiler Flueways Boiler Flueway CleaningTankless Heater Pilot Burner LocationModel No Gallons Per Month Year Excessive Make-Up WaterHoneywell Electronic Ignition Trouble Shooting Guide Honeywell Hot Surface to Pilot Trouble Shooting Guide Avoid Breathing Fiber Particulates and Dust Service Record XI. Repair PartsSection Assembly Canopy and Draft Hood Canopy/Draft Hood Parts Base Tray Base AssemblyBurner Tray 1 Inch Main Burners Manifold and 1 Main Burners Manifold and Main Burners 1 Inch Main Burners Only Manifold and Main Burners 40MM Main Burners only Manifold and 40mm Main BurnersIntermittent Ignition Only Volt Continuous Ignition Standing Pilot Natural GasNatural Gas, High Altitude 5000-9000 Ft. USA Only LP Gas, High Altitude 2000-5000 Ft. USA OnlyLP Gas, High Altitude 5000-9000 Ft. USA Only Natural Gas, High Altitude 2000-4500 Ft. Canada OnlyPilot Burner, Honeywell Q350A1321 Pilot Burner, Honeywell Q348A1002 Page Jacket Assembly Front Top Panel Jacket Assembly Refer to Figure onSteam Trim Page Water Trim Quantity This page Left Blank Intentionally Page Blocked Vent Switch Flame Rollout SwitchTransformer Steam and Gravity Water Only Ignition Module Intermittent Ignition OnlyWiring of Typical Lwco XII. Low Water Cut Off LwcoLwco Location Limited Warranty Limited Warranty