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Blodgett CB24-140G Installation Operation & Maintenance

Blodgett CB24-140G Manual Online:

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Blodgett CB24-140G User Manual
Blodgett CB24-140G User Guide
Blodgett CB24-140G Online Manual

Text of Blodgett CB24-140G User Guide:

  • Blodgett CB24-140G, 1 CB-G SERIES GAS STEAM BOILER CABINETS INSTALLATION – OPERATION – MAINTENANCE BLODGETT OVEN COMPANY www.blodgett.com 44 Lakeside Avenue, Burlington, Vermont 05401 USA Telephone (800) 331-5842, (802) 860-3700 Fax: (802) 864-0183 S00043 Rev A (5/04)

  • 2 IMPORTANT NOTES FOR INSTALLATION AND OPERATION It is recommended that this manual be read thoroughly and that all instructions be followed carefully. This manual should be retained for future reference. This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid p

  • Blodgett CB24-140G, 3 TABLE OF CONTENTS DESCRIPTION PAGE Service Connections 4 1.0 Installation Instructions 5 2.0 Service Connections 8 3.0 Operation Instructions 10 4.0 Operation Instructions for CSD1 Equipped Units 13 5.0 Periodic Maintenance 16 6.0 Adjustments 19 7.0 Troubleshooting 20

  • Blodgett CB24-140G, 4 SERVICE CONNECTIONS S B A M C D 6 [152] 28 [711] 55 [1397] L K J E G H 33 [838] 24 [610] 36 [914] CB24-140G AND CB24-200G F S CB36-140G, CB36-200G,CB36-250 AND CB36-300G DIMENSIONS ARE IN INCHES [MM] S WATER QUALITY STATEMENT 5.75 DIMENSIONS MODEL 5.75 222 A 8.75 146 B 13.5 C 343 D 610 24 121 4.75 127 E 146 F 89 3.5 279 11 G 5 HL 64 2.5 JK CB24-140G CB24-200G 3 76 M 318 12.5 CB36-140G CB36-200G CB36-250G CB36-300G 203 86 152 6.75 171 UNITS inches mm 140,000 BTU/HR 200,000 200,000 250,000 300,000 152 6 Unless otherwise specified, Field W

  • Blodgett CB24-140G, 5 GENERAL The gas boiler is designed to ASME Code and approved as a steam heating boiler restricted to operation at pressure not to exceed 15 psi. The gas boiler may be in a 24" cabinet base rated at 140,000 or 200,000 BTU, 36" cabinet base rated at 200,000, 250,000 or 300,000 BTU, operational on Natural or Propane gas. Boilers may have optional electronic ignition and CSD1 controls. 1.0 INSTALLATION INSTRUCTIONS UNPACKING Immediately after unpacking, check for possible shipping damage. If the appliance is found to be damaged, save the packaging material and contact the carrier within 15 days of delive

  • Blodgett CB24-140G, 6 LEVELING AND ANCHORING THE CABINET 1. Place appliance in the installation position. 2. Place a carpenter’s level on top of the appliance and turn the adjustable feet to level side-to-side and front-to-back. 3. Mark hole locations on the floor through the anchoring holes provided in the rear flanged adjustable feet. 4. Remove appliance from installation position and drill holes in locations marked on the floor. Insert proper anchoring devices (not supplied). 5. Place appliance back in the installation position. 6. Place carpenter’s level on top of appliance and re-level side-to-side and front-to- back. 7. Bolt and anchor appliance securely to

  • Blodgett CB24-140G, 7 WARNING: ELECTRICAL GROUNDING INSTRUCTIONS This appliance is equipped with a three-prong (grounding) plug for your protection against shock hazard and should be plugged directly into a properly grounded three-prong receptacle. Do not cut or remove the grounding prong from this plug. (120V units only). WIRING DIAGRAM FOR APPLIANCE IS LOCATED INSIDE CABINET DOOR. EXHAUST FANS AND CANOPIES: Canopies are set over ranges, ovens, kettles, etc., for ventilation purposes. It is recommended that a canopy extend 6 inches past the appliance and be located 6 feet 6 inches from the floor. Filters should be installed at an angle of 45 degrees or more with the horizontal. This position

  • 8 2.0 SERVICE CONNECTIONS PLUMBING CONNECTIONS WARNING: Plumbing connections must comply with applicable sanitary, safety, and plumbing codes. WATER SUPPLY CONNECTION The incoming cold water supply connection, at the rear of the steamer cabinet, requires 3/8" tubing and water pressure of 25-50 psi. A manual shut-off valve must be provided convenient to the applia

  • 9 Contact your gas company for correct supply line sizes. Purge the supply line to clean out any dust, dirt, or foreign matter before connecting the line to the unit. CAUTION: The pipe thread compound used when installing pipes must be a type that is resistant to the action of liquified petroleum or propane gases. Codes require that a gas shut-off valve be installed in

  • Blodgett CB24-140G, 10 3.0 OPERATION INSTRUCTIONS WARNING: Do not force the gas control knob. Use only your hand to turn the gas control knob. Never use any tool. If the gas control knob will not operate by hand the gas control should be replaced by a qualified service technician. WARNING: Do not disassemble the gas control; it contains no replaceable components. Attempted disassembly or repair may damage the gas control. WARNING: In the event of main burner ignition failure, a 5 minute purge period must be observed prior to re-establishing ignitio

  • Blodgett CB24-140G, 11 Safety Valve - This valve will release (pop off) if the boiler has too much pressure. Once a week, this valve should be tripped during operation to make sure it functions properly. START UP - BOILER OPERATION WITH STANDING PILOT IGNITION 1. Open manual gas shut off valve and if the appliance has a manual blowdown valve, close it. 2. Open cabinet door and turn ON power switch located on left side. Green pilot light will come on, water will begin to enter boiler and required water level will be reached in

  • Blodgett CB24-140G, 12 3. With the gas control valve, power switch and water supply all ON, water begins entering the boiler and gas flows to the pilot: Spark will begin in 2 to 3 seconds. If the pilot fails to light in 90 seconds, the control will provide 100% lockout. If this occurs: Wait 5 minutes, then turn power switch off for one minute before turning power switch back on. 4. Once the pilot is lit and the required water level has been reached, the main burners will ignite. Burner will cycle to meet the steam pressure required. Steam pressure should reach approximately 11 psi as indicated on the pressu

  • Blodgett CB24-140G, 13 4.0 OPERATION INSTRUCTIONS FOR CSD1 EQUIPPED UNITS Initial Start-Up Procedure 1. Open the manual gas shut-off valve. 2. Close the manual blowdown valve, if so equipped. 3. Light the pilot burner. The dial on the combination gas valve has three positions (ON-OFF-PILOT) for manual gas control of main burners and pilot burner. Turn the dial to PILOT. Depress the dial and light the pilot burner on the center burner of boiler. Maintain the dial in depressed position for about 30 seconds and release. Observe that

  • Blodgett CB24-140G, 14 Complete Shutdown Procedure If the appliance is not intended to be operational for a lengthy period of time, shut it down completely. 1. Open the manual blowdown valve, is so equipped. 2. Shut off all supplies of power, gas and water to the appliance. Normal Boiler Operating Cycle Water Fill Cycle On the initial filling of the boiler, the reset switch must be activated to initialize the safety lockout circuit. Once the water in the boiler has reached the proper level, the level control will stop the flow of water to the boiler. As water is consumed in the production of steam, the level control will replenish water to the boiler. Firing Cycle The gas valve is cont

  • Blodgett CB24-140G, 15 Safety Lockout Conditions High Temperature Condition A high temperature safety device is installed on the boiler. Should the temperature exceed the limit of this device, the boiler will be shut down and be put in a state of lockout. The “Temperature” pilot light (Red), and the “Standby” pilot (amber), will come on. High Pressure Condition A high pressure safety switch is installed on the boiler. Should the pressure exceed the limit of this device, the boiler will be shut down and be put into a state of lockout. The “Pressure” pilot light (Red), and the Stand By pilot (amber), will come on. Should this device fail to ope

  • Blodgett CB24-140G, 16 5.0 PERIODIC MAINTENANCE Be sure to flush your boiler water level control daily. Failure to follow this procedure can cause the control to malfunction resulting in serious boiler damage. The Boiler Water Level Control installed on your boiler requires periodic maintenance. As boiler water circulates into the float chamber, sand, scale and other sediment may be deposited in the float chamber. While the chamber has been designed with a large accumulation bowl, it is necessary to flush the sediment from the c

  • Blodgett CB24-140G, 17 CAUTION: If burner does not shut off during blowdown, immediately discontinue use of appliance and call for service. Continue draining water for about fifteen (15) seconds, from control until water is clean. Manually close valve. Recheck gauge glass. If water level has dropped significantly, wait for the boiler to restore water level and pressure and repeat if necessary. WARNING: Disconnect the power supply to the appliance before cleaning or servicing. 1. If water in sight glass is not clear and appears murky, this indicates poor water quality and may cause control failure. SEE WATER QUALITY STATEMENT, page 4. 2

  • Blodgett CB24-140G, 18 VENT HOOD Twice a year check the venting system (hood); remove any obstructions; and clean as necessary. BOILER DESCALING INSTRUCTIONS It is recommended that the boiler be checked every 90 to 120 days for scale build up. Regular maintenance should be carried out at this time. If the boiler is descaled, a new Anode should be installed in the boiler to help extend its life. 1. With boiler empty, close manual blowdown valve. If appliance is equipped with automatic blowdown, turn water supply OFF to appliance. Turn power switch ON. This will energize and

  • Blodgett CB24-140G, 19 6.0 ADJUSTMENTS TO CALIBRATE PRESSURE SWITCHES Pressure switch range is from 1 to 15 psi. Adjust all settings to maximum on high signal adjustment screw on pressure switches. Adjust in the following sequence: - High limit pressure switch. - Override pressure switch. - Operating pressure switch. - Turning screw clockwise to increase, counterclockwise to decrease pressure. - Use relief valve to release pressure from boiler for setting adjustments. 1. HIGH LIMIT PRESSURE SWITCHES Allow pressure to build until unit shuts off. This should occur at 15 psi. Set the high signal

  • Blodgett CB24-140G, 20 7.0 TROUBLESHOOTING BURNERS PRODUCE CARBON DEPOSITS 1. Wrong size orifices. 2. Burner air not adjusted properly. 3. Wrong gas supply. 4. Incorrect pressure at supply. PILOT DOES NOT LIGHT 1. Gas supply to unit is OFF. 2. Power supply is OFF. 3. Gas control knob is OFF. 4. Dirty or loose wire connection to module - clean and/or tighten. 5. Ignitor cable, shorting out - check that it is not in contact with metal or damaged; may require replacement. 6. Defective control or module. 7. Unit has gone into 100% lockout - turn off and try again in five minutes. 8. Di

  • 21 BURNER DOES NOT COME ON 1. Gas supply to unit is “OFF”. 2. Manual shut off valve is “OFF”. 3. Power supply is “OFF”. 4. Faulty valve or ignition module. 5. Pilot out. 6. Pilot may require flame adjustment. 7. Water level has not been reached in boiler. Check water supply is on, check water level control. 8. If water at proper level, ch

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