Beckett CG15 Manual

Gas burner
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Fire, Explosion and Asphyxiation Hazards
Failure to follow these instructions exactly could lead to fi re or explosion and result in
death, severe personal injury or property damage.
1.
Do not store or use gasoline or other fl ammable vapors and liquids in the vicinity of this or any other appliance.
2.
What to do if you smell gas:
- Do not try to light any appliance.
- Do not touch any electrical switch.
- Do not use any phone in your building.
Immediately call your gas supplier from a telephone outside the building.
- Follow the gas supplier's instructions.
- Call the fi re department if you cannot contact your supplier.
3.
Installation and service must be performed by a qualifi ed installer, service agency, or the gas supplier.
COMMERCIAL PRODUCTS
GAS-FIRED
-

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Summary of Contents for Beckett CG15

  • Page 1 Fire, Explosion and Asphyxiation Hazards Failure to follow these instructions exactly could lead to fi re or explosion and result in death, severe personal injury or property damage. Do not store or use gasoline or other fl ammable vapors and liquids in the vicinity of this or any other appliance. What to do if you smell gas: - Do not try to light any appliance.
  • Page 3: Table Of Contents

    Adjust the Burner for Proper Combustion ... Flame Safeguard ... Manual Shutdown for Long Periods ... Ignition Reliability ... Propane Restrictor Description ... Installation ... For the Operator ... Replacement Parts ... Limited Warranty Information ... CG15, CG25, CG50 Burner Manual...
  • Page 4: General Information

    Used to address practices not related to personal injury. To the Owner: Thank you for purchasing a Beckett burner for use with your heating appliance. Please pay attention to the Safety Warnings contained within this instruction manual. Keep this manual for your records and provide it to your qualifi...
  • Page 5: Professional Installer's Responsibility

    Clearances With the burner installed in the appliance, there must be adequate space in front of and on the sides of the burner to allow access and operation. Verify that the clearance dimensions comply with local codes and with the appliance manufacturer’s recommendations.
  • Page 6 13.4 Amps @230 volt AC 208/230v, 3 ph, 60 Hz 460v, 3 ph, 60 Hz 575v, 3 ph, 60 Hz 165 lbs. R.W. Beckett Construction & Setting Data R.W. Beckett Specifi cation Number and Revision Boiler Manufacturer and Model, When Applicable Additional Codes...
  • Page 7: Electrical Supply

    We recommend factory testing of all new burner/ furnace combinations by the furnace manufacturer and/or R. W. Beckett Corp. R. W. Beckett Corp. recommends at least 1 cubic foot of furnace volume for each 150,000 BTU/Hr of fi ring rate. Verify Burner Air Tube Assembly ○...
  • Page 8 Section: Pre-installation Checklist Figure 3A - Maximum Capacity (at 3% O 2 ) vs Furnace Pressure - CG15, 60Hz. Figure 3B - Maximum Capacity (at 3% O 2 ) vs Furnace Pressure - CG25, 60Hz. Figure 3C - Maximum Capacity (at 3% O 2 ) vs Furnace Pressure - CG50, 60Hz.
  • Page 9 CG25 20.9 CG50 24.4 10.5 NOTE: All dimensions are in inches. Figure 5 - Panel and Modulating Valve Dimensions 16.00 CG15, CG25, CG50 Burner Manual DIM. D DIM. E DIM. F Dim. C Dim. D Dim. E Dim. F 32.7 13.7...
  • Page 10: Mount The Burner

    ○ Referring to Figure 6, if the front plate opening (C) in the boiler is larger than the burner fl ange bolt circle, then a custom mounting plate (A) of at least 1/4” thickness must be used with a suitable high- temperature refractory material anchored on the fi...
  • Page 11: Gas Trains

    R. W. Beckett provides the same pressure regulating safety shutoff valve in the gas train (usually a Honeywell V4944B) for both natural gas and propane.
  • Page 12 Section: Connect Gas Piping Table 2A - Natural Gas Supply Piping Capacity Schedule 40 metallic pipe with 0.50 psi or less inlet pressure and 0.30” W.C. pressure drop Maximum capacity in cubic feet of gas per hour (CFH). Natural gas with 0.60 specifi c gravity. Pipe size (inches) IPS Pipe length (feet) 0.75”...
  • Page 13 SSOV2 from the fi nal shutoff valve (2PRSSOV in Figure 8A) to the burner manifold must be kept to a minimum for good light-off reliability. R. W. Beckett recommends the following maximum lengths: Pipe Size If Normally Open Vent Valve (not shown) is used, the distance between the SSOVs must be kept to a minimum using the shortest practical nipples.
  • Page 14: Wire The Burner

    Section: Wire the Burner & Sequence of Operation Wire the Burner Install the burner and all wiring in accordance with the National Electric Code ANSI/NFPA 70 (Canada CSA C22.1) and all applicable codes and requirements. Wire the burner in compliance with all instructions and diagrams provided by the appliance manufacturer.
  • Page 15 High after the fl ame stabilization period. It can repeatedly cycle between low and high as necessary to meet load demand until the load is satisfi ed or a limit opens, and the burner is sent to post purge. ○...
  • Page 16 Section: Sequence of Operation Figure 9B - Typical Wiring Using Model RM7840L for Modulating Control (For Reference Only)
  • Page 17: Prepare The Burner For Start-Up

    If any of these items are not clear or are unavailable, call Beckett at 1-800-645-2876 for assistance. Delayed Ignition, Explosion and Fire Hazards This is a direct spark ignition burner and by code requirements must have a primary control with a 4-second fl...
  • Page 18: Start The Burner

    Equipment Manufacturer) application, the “Mfr’s Settings” label (see Figure 1) will indicate the application and the initial air settings made at Beckett. Please verify those settings using the following procedure. If your burner was not built for a specifi ed application, the...
  • Page 19 fi re setting. This initial setting should be adequate for starting the burner at low fi re. Once the burner is in operation, the air setting will be adjusted for best performance as discussed later in this manual.
  • Page 20: Optional Modulation Linkage Adjustment Instructions

    To ensure optimum operation, minor additional adjustments must be made after the burner is fi red on a boiler. The following adjustment will be pre-set at the factory, but may require minor adjustment at start-up: ○...
  • Page 21 Notice: The light-off rate must not be set below the low fi re recommendation. Lower rates will lengthen the time it takes for gas to get to the burner head and may cause ignition failures. CG15, CG25, CG50 Burner Manual Furnace Pressure at High Fire 0.25”...
  • Page 22: Modulation Control

    The damper motor can be manually operated for set-up and service of the burner by placing the controller in the manual mode, as shown in Figure 13B. Press and hold the EXIT button for 10 seconds to enter the manual mode.
  • Page 23: Verify Input Firing Rate

    B) At burner start-up - Note, as soon as the burner lights, be prepared to adjust the butterfl y valve to set the low fi re rate adjustment. Monitor the fl ame through the observation port. If it appears to be too rich (yellow-orange fl ame), move the butterfl...
  • Page 24: Estimating Rate

    Clocking a Gas Meter Before you clock the meter you must make sure that the burner is operating at a steady rate, and that it is the only thing that is using gas that would fl ow through the meter.
  • Page 25 Figure 14A - Manifold to Furnace Pressure Drop vs Rate CG15 * 1 8 0 0 1 6 0 0 1 4 0 0 1 2 0 0 1 0 0 0 8 0 0 6 0 0 4 0 0 2 0 0 0 .5...
  • Page 26: Check Operation And Safety Controls

    Airfl ow proving switch – With the burner fi ring at its lowest rate, loosen the tubing connection to the airfl ow proving switch. A loss in air pressure at the...
  • Page 27: Use Test Instruments To Set Combustion

    Place DC voltmeter probes in the fl ame amplifi er test jacks. With the burner fi ring, the fl ame signal should be steady and at least 1.25 VDC. Use Test Instruments to Set Combustion...
  • Page 28: Maintenance And Service

    fi re. Do not tamper with the burner or controls or make any adjustments unless you are a trained and qualifi ed service technician. To ensure continued reliable operation, a qualifi ed service technician must service this burner annually.
  • Page 29: Gas Supply Piping

    Figure 15A – Gas Gun Assembly Spuds Air Diffuser 1/8” GAP Electrodes CG15, CG25, CG50 Burner Manual Section: Maintenance and Service Flame Safeguard Follow the control manufacturer’s instructions and verify that the control is functioning to specifi cations. See Page 14 or 16 for appropriate sequence of operation and Items 8 through 10 on Page 28 for control system checks.
  • Page 30 The head setting is established by a notched sleeve on the gas tube that can be rotated to positions on a scale marked by the burner’s model number. The scale should normally be set to the model number on the Beckett burner data label.
  • Page 31: Propane Restrictor Description

    Propane Restrictor Description The Beckett Propane Restrictor Conversion Kit allows for the conversion of CG15, CG25, and CG50 burners for use with propane gas. With the proper installation of the restrictor and attached O-ring, adjustments and settings for propane use will be the same as the adjustments and settings for natural gas use as detailed in the burner manual.
  • Page 32 “Mfr’s Settings” label on the burner housing. For a copy of the current burner manual go to http://www. beckettcorp.com/protect/tech.asp.
  • Page 33: For The Operator

    Main fuel gas valves Inspect exhaust vent system for blockage Inpect combustion air supply Check high and low gas pressure interlocks Check safety valves CG15, CG25, CG50 Burner Manual manufacturer’s Frequency Comments Daily Keep area clean and free of clutter...
  • Page 34: Replacement Parts

    Replacement Parts Note 1: See Burner Confi guration Table.
  • Page 35 Cable, Ignition Electrode Low Gas Pressure Switch High Gas Pressure Switch * Includes Sight Glass, Label, Gaskets, and Fasteners **Includes Beckett Label and Window Gasket NS = Not Shown CG15, CG25, CG50 Burner Manual CG15 Part No. CG25 Part No.
  • Page 36: Limited Warranty Information

    DAMAGE OF ANY NATURE. Beckett neither assumes, nor authorizes any person to assume for Beckett, any other liability or obligation in connection with the sale of this equipment. Beckett’s liability and Customer’s exclusive remedy is limited to the cost of the product.

This manual is also suitable for:

Cg25Cg50

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