Roberts Gorden CTCU 7 Gas Control Valve Maintenance, Maintenance Checklist, Vent Pipe/Terminals

Page 34

COMBAT® CTCU UNIT HEATERS INSTALLATION OPERATION AND SERVICE MANUAL

heat exchanger. Look for signs of overheating at the front tubes which may indicate burner over firing or persistently low air flows.

13.5 Gas Control Valve Maintenance

No regular maintenance is required on these

devices. To change gas control valves, See Page 36, Step 16.1.

Do not repair or disassemble on site. Replace faulty gas valves with genuine replacement parts sold and supplied by Roberts-Gordon.

13.6 Flue Fan

The flue fan should not require maintenance.

However, if the air pressure switch is causing burner lockout, then remove the flue fan from the vent box by unscrewing the screw at the outlet flange and the flue fan mounting plate (See Page 39, Section 16.4

through Page 40, Section 16.5). Ensure that the fan is free to run and that the fan wheel is clean.

13.7 Maintenance Checklist

Installation Code and Annual Inspections: All installations and service of ROBERTS GORDON® equipment must be performed by a contractor qualified in the installation and service equipment sold and supplied by Roberts-Gordon and conform to all requirements set forth in the ROBERTS GORDON® manuals and all applicable governmental authorities pertaining to the installation, service and operation of the equipment.

To help facilitate optimum performance and safety, Roberts-Gordon recommends that a qualified contractor conduct, at a minimum, annual inspections of your ROBERTS GORDON® equipment and perform service where necessary, using only replacement parts sold and supplied by Roberts-Gordon.

The Vicinity of the Heater

Do not store or use flammable objects, liquids or vapors near the heater.

 

Immediately remove these items if they are present.

 

Maintain the clearances to combustibles.

 

Do not hang anything from, or place anything on, the heater.

 

Immediately remove objects in violation of the clearances to combustibles.

 

See Page 5, Section 3.

 

 

Vent Pipe/Terminals

Venting must be intact. Using a flashlight, look for obstructions, cracks on the

 

pipe, gaps in the sealed areas or corrosion.

 

The area must be free of dirt and dust.

 

Remove any carbon deposits or scale using a wire brush.

 

If the vent terminal has a screen built in, remove any dirt, dust or deposits

 

from the screen.

 

See Page 16, Section 8.

 

 

Combustion Air Intake

Intake pipe and inlet must be intact. Look for obstructions, cracks on the pipe,

Pipe

gaps in the sealed areas or corrosion.

 

The area must be free of dirt and dust.

 

Clean and reinstall as required.

 

 

Heat Exchanger

Make sure there are no cracks.

 

Make sure there is no sagging, bending or distortion.

 

Clean or replace as required.

 

 

Gas Line and Shut-off

Check for gas leaks.

Valves

See Page 17, Section 9.

 

 

 

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Contents Combat Page Table of Contents Page Table of Figures Page Page Manpower Requirements Heater SafetySafety Labels and Their Placement Side Panel Label Placement Clearances to Combustibles Installer ResponsibilityNational Standards and Applicable Codes Clearances to Combustibles Installation Clearances and Clearances to Combustibles Gas Supply FlueSpecifications 5.1 Ctcua All Models Dimension Data Ctcua All ModelsGeneral Technical Data Table All Models CTCU-7Handling Heater Installation 6.1 GeneralBasic Information Wall MountingSuspension Methods Shelf Mounting and Hanging Suspension For flue termination See Page 14, through Page 15, Figure Type B22 ApplianceFlue and Roof Detail Roof Terminal Plastic Cup Masterflash Manifold Air Intake Heaters Installed Within the Heated Space Room Sealed InstallationOpen Flued Installation AIR SupplyGAS Pipe Work ConnectionsGas Connection with Stainless Steel Flex Connector Burner Controls Thermostat Wiring and Electrical InformationRemote Controls Remote Fan ControlsCtcua Wiring Diagram Models Louvres CommissioningGas Fired Heater Electrical ChecksBegin Commissioning Before Operating the Heater Automatic Burner Control Box SequenceCheck Gas Rate Combustion TestingTurning Off the Heater Complete the Commissioning Instruction to the UserHeater Operation User InstructionsCommon User Controls 12.3.1 Fan Thermostat Simple Fault Finding Burner Faults Burner Lockout Reset ButtonSimple Fault Finding Limit ThermostatServicing 13.3 Fan/Motor Assembly MaintenanceHeat Exchanger Maintenance Servicing InstructionsVicinity of the Heater Gas Control Valve MaintenanceMaintenance Checklist Vent Pipe/TerminalsWindow When installed DuctworkBurner Observation Flue Blower Scroll, WheelBurner Conversion Conversion Between Gases 14.1 GeneralGas Valves Troubleshooting Conduct Commissioning procedure as shown on Page 21, Section GeneralTroubleshooting For Automatic Ignition Burner Systems Troubleshooting for Flame Supervision System Troubleshooting for Solenoid ValvesTroubleshooting for Main Fan Models 7 Removal and Replacement PartsBurner Components All ModelsBurner Compartment Burner InjectorsIgnition Electrode and Flame Probe Flue Fan Vertical Installation Models 7 Model CTCU-7Flue Fan Vertical Installation Models 22 Pressure Switch Fan and Limit Thermostats 16.9.1 Removal and Replacement Ctcua Axial Fan/Guard/Motor AssemblyFan Removal and Replacement To Replace the Fan AssemblyPage Fire Hazard
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CTCU 32, CTCU 7, CTCU 22, CTCU 11, CTCU 15 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.

CTCU 15, on the other hand, is slightly smaller yet offers remarkable versatility. With an integrated control system, it can easily adapt to changing operational demands, making it a preferred choice for businesses that experience variable occupancy levels. Its quiet operation minimizes workplace noise, and its energy-efficient design significantly cuts operational costs.

CTCU 7 is specifically engineered for smaller spaces without compromising performance. This unit features compact dimensions while still delivering adequate air flow for localized heating and ventilation needs. The advanced temperature control algorithms allow for precise adjustments, ensuring a comfortable environment even in tight areas.

CTCU 27 stands out with its advanced technology that includes integrated smart controls. This model offers real-time monitoring and data analytics to optimize performance and enhance energy efficiency. Its ability to connect with existing building management systems makes it an appealing choice for modern facilities aiming to improve sustainability initiatives.

The CTCU 11 is characterized by its user-friendly interface and maintenance accessibility. It is built with durable materials that extend its lifespan, ensuring long-term reliability. This unit is ideal for applications where regular maintenance is challenging, as its design allows for easy access to all critical components.

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.
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