Beckett CG15, CG50 Check Operation and Safety Controls, Testing by Qualified, Technician Required

Page 26

Section: Start the Burner

 

 

 

 

 

 

 

 

Figure 14C - Manifold to Furnace Pressure Drop vs Rate CG50*

 

 

 

 

6000

 

 

 

 

 

 

 

 

 

 

5000

 

 

 

 

 

 

 

 

 

MBH

4000

 

 

 

 

 

 

 

 

CG50.5S

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CG50.4S

 

 

 

 

 

 

 

 

 

 

Rate,

3000

 

 

 

 

 

 

 

 

CG50.3S

 

 

 

 

 

 

 

 

 

CG50.2S

 

 

 

 

 

 

 

 

 

 

 

2000

 

 

 

 

 

 

 

 

CG50.1S

 

 

 

 

 

 

 

 

 

 

 

1000

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

Pressure Drop, In. WC

* Charts represent both natural and propane gas.

Check Operation and Safety Controls

2. Operating control – Run the burner until the

 

 

 

operating control shuts it off. If necessary, make

 

 

 

adjustments to ensure the control cycles the burner

 

 

Testing by Qualified

 

 

in the desired temperature or pressure range.

 

 

 

 

Technician Required.

 

 

Operating controls should be

 

 

 

 

Failure to properly test and verify the correct

 

 

 

 

 

 

set to minimize the number of

 

 

function of operation and safety controls could lead

firing cycles that the burner runs. High cycling rates

to equipment malfunction and result in asphyxiation,

increase the possibility of light-off lock outs.

explosion or fire.

3. Low water cutoff (LWCO) – With the burner firing,

 

 

 

y

The testing of operation and safety controls requires

open the blow down valve on the low water cutoff,

 

technical training and experience with commercial

if applicable. As the water level drops, the LWCO

 

gas burning systems.

switch contacts open and shut the burner off. When

y

Carefully follow the manufacturer’s instructions

the water level rises, the LWCO contacts close

and restart the burner. Monitor the LWCO switch

 

supplied with the controls.

 

operation in relation to the water level in the sight-

y

Verify the correct function of all operation and safety

glass for synchronization.

 

controls used in the installation.

4. Airflow proving switch – With the burner firing at

y

If instructions are not available, use the following

its lowest rate, loosen the tubing connection to the

 

recommended procedures and record all results in a

 

airflow proving switch. A loss in air pressure at the

 

start-up log.

 

tubing should immediately cause the diaphragm

y

Refer to Figure 7 for typical test points and

in the switch to open and recycle or lockout the

 

component locations.

safeguard control.

 

 

 

5. Low gas pressure switch – With the burner firing

 

 

 

1. High limit – To check the High Limit, raise the

and a manometer attached to a test port near

the low pressure switch, gradually close the main

 

temperature or pressure of the operating control to

leak test cock to shut off the gas supply. Note the

 

a higher level and lower the limit to a setting less

pressure at which the low gas pressure switch

 

than the operating control. Run the burner until the

opens and shuts the burner off. Manually reset the

 

high limit opens and shuts the burner off. Adjust the

switch. The low gas pressure switch should be set

 

controls back to the desired settings.

at half of the normal supply pressure in the line.

26

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Contents Fire, Explosion and Asphyxiation Hazards Page Contents Owner’s Responsibility General InformationHazard Definitions Frozen Plumbing Water Damage HazardPre-installation Checklist Burner Specifications Burner Label LocationElectrical Supply Verify Burner Air Tube AssemblyTest For Gas Pipe Leaks Verify Burner ComponentsMaximum Capacity at 3% O2 vs Furnace Pressure CG15, 60Hz Burner Dimensions Protect the Air Tube from Overheating Mount the BurnerConnect Gas Piping Do Not Use Teflon Tape on Gas PipingInstall a Drip Leg in Gas Supply Piping Gas Trains Gas Leaks and Explosion HazardsNatural Gas Supply Piping Capacity Propane LP Gas Supply Piping CapacityUL Gas Train High/Low and Low Fire Start Pipe SizeKeep Service Access Covers Securely Installed Wire the BurnerDo Not Bypass Safety Controls Sequence of OperationSection Sequence of Operation Section Sequence of Operation Prepare the Burner for Start-up Professional Installation Service RequiredDelayed Ignition, Explosion Fire Hazards Start the Burner Burner Start ProcedureInitial Air Settings Test InstrumentsDamper Motor with Cover Optional Modulation Linkage Adjustment Instructions Adjustment ProcedureInitial Burner Settings for Both Propane & Natural Gas CG50Modulation Control Display MeaningVerify Input Firing Rate Clocking a Gas Meter Temperature CorrectionEstimating Rate Uncorrected Flow Rate800 CG15.2S CG15.1S 600 400 200 CG15.4SCG15.3S 500Technician Required Check Operation and Safety ControlsTesting by Qualified Recommended Combustion Test Sequence Use Test Instruments to Set CombustionAnnual Maintenance Maintenance and ServiceAnnual Professional Service Required Turn Off Electric and Gas Supply Before ServicingAdjust the Burner for Proper Combustion Flame SafeguardInstallation Area Gas Supply PipingGas Gun Assembly Installation Propane Restrictor DescriptionNumbers As shown in Figures 16Test/Inspection Frequency Comments For the Operator Inspect Heating System RegularlyPeriodic Inspection Sheet Replacement Parts Item Description CG15 Part No CG25 Part No CG50 Part No See TableLimited Warranty Information
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CG25, CG50, CG15 specifications

Beckett CG25, CG15, and CG50 are advanced burner systems designed for optimal performance in residential and commercial heating applications. Developed with state-of-the-art technology, each model offers distinct features and characteristics tailored to meet varying demands.

The Beckett CG25 is engineered for medium-output applications, providing reliable heating with exceptional efficiency. One of its standout features is the high-performance combustion head which enhances the air-fuel mixing process, leading to improved burn quality and reduced emissions. Additionally, the CG25 incorporates a fully automatic control system that allows for precise temperature regulation, contributing to energy savings and lower operational costs.

The Beckett CG15, meanwhile, is ideal for smaller residential systems. It stands out for its compact design, making it easy to install in tight spaces. Despite its size, the CG15 does not compromise on performance. It features advanced flame retention technology, which ensures a stable and efficient burn, while its low noise operation adds convenience for users. The CG15 also benefits from a robust safety system that includes a lockout feature to prevent unsafe operation.

On the higher end, the Beckett CG50 is designed for larger heating applications and is capable of generating high outputs while maintaining fuel efficiency. Its innovative design encompasses a three-stage combustion process that enhances efficiency and minimizes emissions significantly. The CG50 also features advanced diagnostic capabilities, providing real-time feedback and enabling proactive maintenance, which increases reliability and prolongs equipment life.

All three models are built with durability in mind, utilizing high-quality materials to withstand harsh operating conditions. They are compatible with various types of fuel, including oil and gas, making them versatile solutions for a broad range of heating needs. Beckett's commitment to sustainability is evident in the design of these burners, as they comply with stringent environmental regulations.

In conclusion, the Beckett CG25, CG15, and CG50 systems represent a blend of innovative technology, efficiency, and robust design. Their unique features cater to different heating demands, making them suitable for various applications while ensuring both performance and reliability. Whether for residential or commercial use, these burners are ideal choices for anyone looking to invest in a high-quality heating solution.
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