Roberts Gorden CTU 22 TO 115 Heater Operation, Common User Controls Thermostat Limit Thermodisc

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COMBAT® CTU UNIT HEATERS INSTALLATION OPERATION AND SERVICE MANUAL

SECTION 12: USER INSTRUCTIONS 12.1 User Instructions

The CTU heaters are fully automatic and operate from the external controls fitted on site.

The only user controls at the heater are the: Burner Lockout Reset Button:

See Page 28, Section 12.3.2

Thermostat Limit Thermodisc Reset Button: See Page 28, Section 12.3.1

WARNING

Electrical Shock Hazard Disconnect electrical power before servicing.

Failure to follow these instructions can result in death or electrical shock.

12.2 Heater Operation

When the heater has been switched on by the remote controls installed on site, the main burner will automatically turn on.

The burner control box will control the safe ignition of the flame.

All heaters require a constant gas and electricity supply which must not be interrupted during the normal operation of this heater.

Figure 13: Heater Operating Sequence

 

ON

CLOSE

THERMOSTAT

 

DOWN

CALL FOR

 

 

HEAT

ON

 

BURNER

 

 

RUN

ON

 

 

 

 

2-3 MINUTES

RUN ON

FAN

 

 

12.3 Common User Controls

12.3.1Thermostat Limit Thermodisc

Press to reset

These are hand reset devices to give further protection against fan failure.

NOTE: To reset, the heat exchanger must be cool.

 

Description

 

Part Number

 

 

 

All Models

 

90412100

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WARNING

 

 

 

 

 

 

 

 

Explosion Hazard

If control locks out, do not make more than 3 attempts to restart the heater.

Dangerous gas mixtures can build up.

The fault must be traced and repaired by a registered installer or service engineer.

Failure to follow these instructions can result in death, injury or property damage.

12.3.2 Burner Lockout Reset Button

The red warning light at the front of the heater will illuminate when the control has gone to lockout. This may be caused by flame failure. Press the reset button on the back of the heater, (See Page 5, Section 4.1), or the remote reset if installed on site.

12.4 Lighting Instructions

12.4.1 To Turn On Heater

1.Ensure that the electrical and gas supplies to the heater are on. Check that the on site controls are “ON”.

NOTE: The thermostat setting must be above the ambient temperature for the heater to operate.

2.The green light will be on and the automatic fir- ing sequence will begin as described on Page 25, Figure 10. The heater will now operate auto- matically under the control of the on site con- trols. Following long shut down periods, the control may go to lockout. See Page 28, Sec- tion 12.3.2.

28

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Contents Follow the gas supplier’s Instructions Immediately call your local gasSupplier after leaving the building Supplier, call the Fire DepartmentPage Roberts-Gordon, LLC Page Table of Figures Page Product Approval Clearances to Combustibles Heater SafetyInstaller Responsibility Corrosive ChemicalsVentilation Minimum Required Installation ClearancesCritical Considerations 3.1 Basic Information Gas SupplyInstallation Clearances and Clearances to Combustibles Top View Specifications 4.1 CtuaDimension Data Ctua All Models 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 Option a GAS PipingConnections 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 Electrical Checks CommissioningLouvres Mechanical ChecksAutomatic Burner Control Box Sequence End ViewCheck Gas Rate Combustion TestingTurning Off the Heater Complete the Commissioning External ControlsInstruction to the User Common User Controls Thermostat Limit Thermodisc Burner Lockout Reset ButtonHeater Operation Lighting Instructions To Turn On HeaterSimple Fault Finding Burner Faults Simple Fault FindingTo Turn the Heater Off Heat Exchanger Maintenance Burner Maintenance13.3 Fan/Motor Assembly 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/NTo Replace the Fan Assembly Ctua Axial Fan/Guard/Motor AssemblyFan Removal and Replacement 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.

In addition to its energy efficiency, the Roberts Gordon CTU features a compact design, making it suitable for installations in tight spaces. Its lightweight construction allows for easy installation and relocation, ensuring that businesses can quickly adapt to changing layout requirements. The unit is equipped with high-quality materials and a durable finish, contributing to its longevity and low maintenance needs.

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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