Roberts Gorden CTCU 27, CTCU 15, CTCU 11 Troubleshooting for Flame Supervision System, Start

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COMBAT® CTCU UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL

14.3 Troubleshooting for Flame Supervision System

To measure flame current, connect a 0 - 50 μA DC meter in series with the flame probe. If the meter reads negative values, then reverse the test leads.

START

Connect a DC ammeter in series with the flame probe.

Is the flame present and at least 1 µA DC flame current?

Yes

Is there a current flowing in the

flame probe circuit with no

flame present?

No

Does “lockout” occur when there is a flame present?

No

Heater Operating

TROUBLESHOOT ENDS.

No

Use Section 14.1 to

 

 

trace the fault.

 

 

 

Is the connecting lead

 

Repair or replace as

Yes

damaged? Is the flame probe

Yes

damaged or touching earthed

necessary.

 

components?

 

 

 

Is inlet burner gas pressure

 

 

Yes

correct? Is live and neutral

Yes

Control box faulty.

polarity correct? Is

Replace with correct type.

 

flame probe circuit correct?

 

 

 

No

 

 

 

Repair or replace as

 

 

 

necessary.

 

 

If problems persist, contact

No

Roberts-Gordon Ltd. at

www.rg-inc.com

 

NOTE: Minimum flame probe current 1 μA DC. Typical flame probe current 3-5 μA DC.

24

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Contents Mbat Page Roberts-Gordon, LLC Page Table of Figures Page Product Approval Clearances to Combustibles Heater SafetyInstaller Responsibility Corrosive ChemicalsFlue Minimum Required Installation ClearancesCritical Considerations 3.1 Basic Information VentilationInstallation Clearances and Clearances to Combustibles Specifications 4.1 Ctcua All Models Dimension Data Ctcua All ModelsGeneral Technical Data Table All Models CTCU-7 CTCU-11 CTCU-15 CTCU-22Heater Installation 5.1 General Shelf Mounting and SuspensionShelf Mounting and Hanging Suspension Changing Flue and Air Intake Orientation Flue InstallationFlue Installation Type B22 ApplianceVertical and Horizontal Flue Termination Type B22 Appliance Heaters Installed Within the Heated Space Room Sealed InstallationOpen Flued Installation AIR SupplyGAS Piping ConnectionsBurner Controls Thermostat Wiring and Electrical InformationRemote Controls Remote Fan ControlsSite Wiring Ctcua Wiring Diagram Models 7Mechanical Checks CommissioningLouvres Begin Commissioning Before Operating the HeaterAutomatic Burner Control Box Sequence Check Gas Rate Combustion TestingPressure Switch Turning Off the HeaterCommon User Controls 11.3.1 Fan Thermostat Burner Lockout Reset ButtonHeater Operation Limit ThermostatSimple Fault Finding Simple Fault Finding Burner FaultsTo Turn the Heater Off Heat Exchanger Maintenance Burner Maintenance12.3 Fan/Motor Assembly Maintenance Gas Control Valve MaintenanceConversion Between Gases 13.1 General Burner ConversionGas Valves Conduct Commissioning procedure as shown on Page 15, Section Troubleshooting For Automatic Ignition Burner Systems Turn on controlsTroubleshooting for Flame Supervision System StartTroubleshooting for Solenoid Valves Troubleshooting for Main FanRemoval and Replacement Parts Burner ComponentsGas Valve Burner Compartment Burner InjectorsIgnition Electrode and Flame Probe Flue Fan Vertical Installation 041 Fan and Limit Thermostats 15.8.1 Removal and Replacement Ctcua Axial Fan/Guard/Motor AssemblyFan Removal and Replacement To Replace the Fan AssemblyPage Page Some objects can catch fire or explode when placed
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CTCU 7, CTCU 22, CTCU 11, CTCU 15, CTCU specifications

Roberts Gorden offers a diverse range of high-performance make-up air units known as the CTCU series, which includes models CTCU 22, CTCU 15, CTCU 7, CTCU 27, and CTCU 11. Each model is designed to deliver efficient and reliable air management solutions for various industrial and commercial applications.

The CTCU 22 is renowned for its robust construction and powerful performance, providing exceptional air flow rates that can accommodate larger facilities. It features a high-efficiency heat exchanger and a multi-stage filtration system that ensures optimal indoor air quality while reducing energy consumption. This model is particularly beneficial for environments requiring high volumes of tempered air, making it ideal for manufacturing plants and warehouses.

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In summary, Roberts Gorden's CTCU series encompasses a range of units catered to various industrial needs. With features focusing on efficiency, flexibility, and user-friendliness, these models deliver high-quality air management solutions to improve indoor environments while reducing energy consumption.