Burnham K50 manual

Page 70

When the operating control (A) calls for heat, it energizes the main gas valves (B) in both gas trains starting burner operation. The burners will operate until the operating control is satisfied. The high limit control (C) will stop burner operation in case of excessive steam pressure (steam boiler) or excessive boiler water temperature (water boiler).

The low water cut-off (D) will stop burner operation if the water level in the boiler drops below the low- est safe level.

Should one of the pilot flames become extinguished the pilot safety switch (E) to which it is connected would shut off the gas supply to that pilot and to the main gas valves and burners it is serving (100% shut-off). Operation of the burners supplied by the second gas train will be unaffected.

Fig. 56

WIRING DIAGRAM - 15 THRU 24 SECT. BOILERS

THERMOCOUPLE CONTROL SYSTEM

CANADA ONLY

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Contents Series 5B Section I Equipment Check List Important Information Canadian Equipment Check List Canadian Equipment Check List Dimensional Data Natural GAS Maximum 14 W.C. Minimum 5.5 W.CDo not Install this Boiler on Carpeting Provide Combustion and Ventilation AIRBASE-BURNER-MANIFOLD Assemblys Single Manifold Base 5006B Thru 5014B Section BoilersLEH Section on Base Assembly of Center Sections Dual Manifold Bases 5015B Thru 5026B Section BoilersArrangement of Sections and Canopys Open Steam or Water Trim Carton Purpose of Tappings and Their LocationsTesting Boiler Assembly for Leaks Installation of BUILT-IN HeaterConnect Supply and Return Piping to Heating System Attachment of Flue Covers Sealing of BASE, Installation Flue Covers and CanopiesOxygen Corrosion Page Page Page Page Supply Connections & 2 Return Connections Recommended Water Boiler PipingSupply Connection & I Return Connection Sizes 5006B Thru 5019BInstallation of Jacket Parts Common to ALL Boiler Sizes Installation of Jacket Support Brackets to Base END PanelsPage Exploded View of Jacket 6 Thru 10 Section Boilers Securing of CANOPY/DRAFTHOOD CANOPY/DRAFTHOOD Mounting Diagram Exploded View of Jacket 11 Thru 19 SECT. Boilers Completion of Jacket Installation 11 Thru 26 Section Boilers Exploded View of Jacket 20 Thru 22 SECT. Boilers Exploded View of Jacket 26 SECT. Boilers Shutoff Valve Between Safety Valve Steam Trim and ControlsMounting Elevations of M&M 150 and a 67M Float Lwco Water Trim and Controls Recommended Piping to BUILT-IN Tankless Heaters Open GAS Train CartonsOpen Gas Controls Cartons Installation of S8610M Module Pilot Piping EI Control System Robertshaw7000 A B Thru 5009BPilot Piping EI Control System V88A A B Thru 5026B NAT. GAS Canada 5006B Thru 5026B NAT. GASInstallation of Pilot Safety Switch EO Control System Installation of Pilot Safety SwitchPilot Piping EO Control System Installation of EO and EE Mounting Bracket and Controls EE Control SystemSect. and larger boilers Pilot Piping EE Control SystemInstallation of Pilot Safety Switch EOP Control System Pilot Piping EOP Control SystemEEP Control System Pilot Piping EEP Control SystemPage Venting Single Vent System Manifold Vent SystemPage Section IV Operation GeneralTable IV Water Content Condensation Control VariationsBe sure power is off when checking high voltage connections A B Thru 5009B A B Thru 5014B Schematic Wiring Diagram EI Control System V88 GAS TrainSequence of Operation Canada 5006B Thru 5014BSchematic wiring diagram 15 Thru 26 SECT. Boilers EI Control SystemSequence of Operation Page Safety Switch Circuit Pilot FailureWiring diagram 6 Thru 14 SECT. Boilers Proceed to Paragraph 15- Minimum Input Wiring diagram 15 Thru 26 SECT. Boilers Operating and safety controls. Should any EE Control System Wiring diagram 15 Thru 26 SECT. Boilers Proceed to Paragraph 15- Minimum Input Wiring Diagram 6 Thru 14 SECT. Boilers EOP Control System Turn on Main Power Switch. Main Power Light will light Wiring Diagram 15 Thru 26 SECT. Boilers EOP Control System Safety Switch Circuit Wiring Diagram 6 Thru 14 SECT. Boilers EEP Control System Pilot Failure Safety Switch Circuit Wiring Diagram 15 Thru 26 SECT. Boilers EEP Control System Make sure all manual resets are activated where applicable Normal Operation Sequence Page Check GAS Input Rate to Boiler Motorized Modulating Actuator Minimum Input AdjustmentsV8944B Combination Valve ScrewTest Ignition System Safety SHUT-OFF Device AS Follows Thermocouple Pilot System Combustion Chamber BURN-OFFSection V Service Removal of Jacket Front PanelAvoid Breathing Fiber Particulates and Dust Cleaning of Flueways LubricationPilot Locations Pilot Flame Main Burner Flame AdjustmentPilot Flame Honeywell Q3481B Honeywell Q179D Pilot w/THERMOCOUPLEPilot Flame Honeywell Q179C Pilot Honeywell Q327A Pilot w/THERMOCOUPLEDo not drain water below gauge glass Base Parts JacketsSeries 5B Base Parts 5006B thru 5014B Number in in Table Relates to Corresponding NumberBase Parts Series 5B Base Parts 5015B thru 5026B 5015B 5016B 5017B 5018B 5019B 5020B 5021B 5022B 5024B 5026BBase Parts Canopy Boiler Size Quantity Part SizeIntegral Canopy Drafthoods & Sections Series 5B Section Replacement Chart Series 5B Base / Pilot Assemblies Series 5B Jackets 60413075 5007B Lower Top Panel 2 x 37-3/16 60413085 5008B 2 x 20-7/8 Complete Jackets Jackets Boiler Size Boiler Size 5006B 5008B 5009B 5014B 5015B 5016B 5017B 5026BV88A GAS Trains Canada Natural GAS only Fluid Power GAS Trains USA 100 5006B 5009B 5015B 5016B 5017B101 Diaphragm Valve LO-HI-LO GAS Train Canada Natural GAS onlyFluid Power GAS Trains Canada 102103 Ignition Module & Support Bracket EI Control System104 Pilot Safety SwitchDescription Manifold Module Support L62GB-3C 105 A. 5010B-5026B NAT. GAS Canada 5006B-5026B NAT. GAS106 Transformer & Pilot Line Regulator EO Control System107 108 109 110 111 EOP & EEP Control PanelEI Control System Pilot Assembly 1126236007 NAT. GAS 113EI GAS 6236003 NAT. GAS 114Not Available for LP Date Service Performed 115Limited Warranty 116
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