Roberts Gorden CTU 22 TO 115 service manual Troubleshooting for Flame Supervision System

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COMBAT® CTU UNIT HEATERS INSTALLATION OPERATION AND SERVICE MANUAL

15.3Troubleshooting for Flame Supervision System

START

Connect a DC ammeter in series with the flame probe.

Is the green light on and

 

Use section 15.1 to

 

 

at least 1 µA DC flame

No

 

 

trace the fault.

 

 

current?

 

 

 

 

Yes

 

 

 

 

Is there a current flowing in the

 

Is the connecting lead

 

Repair or replace as

Yes

damaged? Is the flame probe

Yes

flame probe circuit with no

damaged or touching earthed

necessary.

flame present?

 

components?

 

 

 

 

 

 

No

 

 

 

 

Does “lockout” occur when

 

Is inlet burner gas pressure

 

 

Yes

correct? Is live and neutral

Yes

Control box faulty.

there is a flame present?

polarity correct? Is

Replace with correct type.

 

 

flame probe circuit correct?

 

 

 

 

No

 

 

 

 

Repair or replace as

 

 

 

 

necessary.

 

 

No

 

 

 

 

 

 

If problems persist, contact

 

 

Heater Operating

No

ROBERTS GORDON® at

 

 

TROUBLESHOOT ENDS.

Tel: +44(0) 121 506 7709

 

 

 

 

 

 

 

www.rg-inc.com

 

 

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

15.4Troubleshooting for Solenoid Valves

START

Is 230 V at the valve

terminals at the appropriate time.

Yes

Is gas pressure at inlet of the valve correct for gas type?

Note pressure found.

Yes

Does gas pressure at outlet

of the valve rise when

valve turns on?

Yes

Does gas pressure at

outlet of valve return to zero or

lower when valve turns off?

Yes

Valve Operating

TROUBLESHOOT ENDS.

No

Fault elsewhere

No

Fault elsewhere

Valve faulty.

No Replace with one of correct type.

Valve faulty.

No Replace with one of correct type.

If problems persist, contact

No

ROBERTS GORDON® at

Tel: +44(0) 121 506 7709

 

 

www.rg-inc.com

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Contents Immediately call your local gas Supplier after leaving the buildingFollow the gas supplier’s Instructions Supplier, call the Fire DepartmentPage Roberts-Gordon, LLC Page Table of Figures Page Product Approval Heater Safety Installer ResponsibilityClearances to Combustibles Corrosive ChemicalsMinimum Required Installation Clearances Critical Considerations 3.1 Basic InformationVentilation Gas SupplyInstallation Clearances and Clearances to Combustibles Specifications 4.1 Ctua Dimension Data Ctua All ModelsTop View End View Rear ViewDimension Data CTUB, Ctuc and Ctud CTUB, Ctuc and CtudGeneral Technical Data Table Gas rates corrected to standard conditions 1013.25 mbar 15 C Heater Installation 5.1 General HandlingType B22 Appliance Flue Installation 6.1 Flue InstallationAir Intake Terminal Cover Vertical and Horizontal Flue Termination Type B22 Appliance AIR Supply Distribution Duct Work for CTUB, Ctuc and Ctud Heaters Optional Heater ConfigurationsCtud Heaters GAS Piping ConnectionsOption a Option BWiring and Electrical Information Ctua Wiring Diagram Models 50 HzSite Wiring Site Wiring CTUB/C Wiring Diagram ModelsIgnition Module 230 V 1 Ø 50 HzRUN Ctud Wiring Diagram Models For external fan wiringSite Wiring and Electrical Information Commissioning LouvresElectrical Checks Mechanical ChecksAutomatic Burner Control Box Sequence End ViewCheck Gas Rate Combustion TestingTurning Off the Heater Complete the Commissioning External ControlsInstruction to the User Burner Lockout Reset Button Heater OperationCommon User Controls Thermostat Limit Thermodisc Lighting Instructions To Turn On HeaterSimple Fault Finding Burner Faults Simple Fault FindingTo Turn the Heater Off Burner Maintenance 13.3 Fan/Motor Assembly MaintenanceHeat Exchanger Maintenance Gas Control Valve MaintenanceBurner Conversion Conversion Between Gases 14.1 GeneralGas Valves Conduct Commissioning procedure as shown on Page 24, Section StartFor your safety and optimum heater performance Troubleshooting For Automatic Ignition Burner SystemsConduct Commissioning procedure as shown Troubleshooting for Flame Supervision System Troubleshooting for Solenoid ValvesRemoval and Replacement Parts Burner Compartment Burner InjectorsIgnition Electrode and Flame Probe Remove screws securing outlet flange to the flue adapter Pressure Switch RG P/NCtua Axial Fan/Guard/Motor Assembly Fan Removal and ReplacementTo Replace the Fan Assembly Ctub & Ctuc Centrifugal Fan/Guard/Motor AssemblyCentrifugal Fan Orientation Fan DataPage Page Page Some objects can catch fire or explode when placed

CTU 22 TO 115 specifications

The Roberts Gordon CTU 22 TO 115 is a renowned unit heater designed to deliver efficient heating solutions in commercial and industrial settings. Known for its advanced features and robust design, this unit heater is ideal for applications where warmth and comfort are essential, such as warehouses, manufacturing facilities, and large retail spaces.

One of the main features of the CTU 22 TO 115 is its powerful heating capacity. With a range of output capabilities, it can effectively heat large areas, ensuring that employees and equipment remain comfortable during cold weather. The heater's output is adjustable, allowing for tailored heating solutions based on specific operational needs.

This model integrates several innovative technologies to enhance efficiency and performance. The use of advanced combustion technology ensures optimal fuel efficiency, which translates to lower energy costs and reduced environmental impact. The heater is available in both gas and oil configurations, providing versatility to accommodate different fuel sources depending on availability and preference.

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Safety is a paramount concern in any heating system, and the CTU 22 TO 115 doesn't disappoint. It comes with various safety features, including over-temperature protection, ensuring that it operates securely under all conditions. With automatic shutoff capabilities, the heater provides peace of mind to operators, allowing for unattended operation in more remote settings.

Moreover, the CTU’s quiet operation is a significant advantage, as it minimizes disruption in the workplace, ensuring a comfortable environment for personnel. Its design also facilitates easy access to components for maintenance, thus ensuring that the unit remains operational with minimal downtime.

Overall, the Roberts Gordon CTU 22 TO 115 combines performance, efficiency, and safety features to create a reliable heating solution for diverse industrial applications. Its adaptability to various fuel types and efficient design makes it a popular choice among facility managers looking for dependable heating solutions.
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