Roberts Gorden CTCU 7, CTCU 27, CTCU 15, CTCU 11 Begin Commissioning Before Operating the Heater

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COMBAT® CTCU UNIT HEATERS INSTALLATION OPERATION AND SERVICE MANUAL

11.4 Begin Commissioning

11.4.1 Before Operating the Heater

To ensure that all the controls are in safe working order, operate the heater for the first time with the isolating gas valve turned off.

1. Turn off the gas isolating valve

2.Using the installed external control, turn on the burner. The automatic sequence will now begin as described on Page 22, Figure 11.

There will be no ignition of the burner and lockout will occur, which proves the controls are operating correctly.

Figure 11: Automatic Burner Control Box Sequence

 

KEY TO

T0

T1

T2

T3

T4

T5

T6

T7

T8

SYMBOLS

 

 

 

 

 

 

 

 

 

 

Thermostat

 

 

 

 

 

 

 

 

 

 

Fan

P

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P

Pressure

 

 

 

 

 

 

 

 

 

Switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fan Neon

 

 

 

 

 

 

 

 

 

Neon

 

 

 

 

 

 

 

 

 

 

Ignition

 

 

 

 

 

 

 

 

 

 

Gas

 

 

 

 

 

 

 

 

 

 

Valve

 

 

 

 

 

 

 

 

 

 

Flame

 

 

 

 

 

 

 

 

 

 

Sensing

Burner Neon

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lockout Alarm

 

 

 

 

 

 

 

 

 

 

Signal (optional)

 

 

 

 

 

 

 

 

 

 

 

 

 

Tp

 

 

Tp

 

Ts

 

 

 

 

10 sec

 

 

10 sec

 

10 sec

 

 

 

 

40 sec max.

 

 

Interruption of main

 

Burner Lockout

 

 

11 sec typical

 

 

flame sensing

 

signal received after

 

 

 

 

 

 

 

 

 

3 ignition trial

 

 

 

 

 

 

 

 

 

 

failures

NOTE: If the heater operates for more than 24 hours continuously, the ignition module will automatically recycle the burner to ensure that all safety functions are still in working condition.

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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-7Heater Installation 6.1 General Basic InformationHandling 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 Room Sealed Installation Open Flued InstallationHeaters Installed Within the Heated Space AIR SupplyGAS Pipe Work ConnectionsGas Connection with Stainless Steel Flex Connector Wiring and Electrical Information Remote ControlsBurner Controls Thermostat Remote Fan ControlsCtcua Wiring Diagram Models Commissioning Gas Fired HeaterLouvres 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 Burner Lockout Reset Button Simple Fault FindingSimple Fault Finding Burner Faults Limit Thermostat13.3 Fan/Motor Assembly Maintenance Heat Exchanger MaintenanceServicing Servicing InstructionsGas Control Valve Maintenance Maintenance ChecklistVicinity of the Heater Vent Pipe/TerminalsWhen installed Ductwork Burner ObservationWindow 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 Removal and Replacement Parts Burner ComponentsModels 7 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 Ctcua Axial Fan/Guard/Motor Assembly Fan Removal and ReplacementFan and Limit Thermostats 16.9.1 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.