Roberts Gorden CTU 22 TO 115 service manual Automatic Burner Control Box Sequence, End View

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SECTION 11: COMMISSIONING

Figure 10: Automatic Burner Control Box Sequence

Supply 230 V
Flue Fan
Pressure Switch P	NO
C	NC

Ignition Spark

Start Gas Valve

Flame Signal

Burner sequence for Honeywell S4563 or S4565C

START

RUN

DOWN

30 Sec. Purge*

ts**

Required Incoming Signals	Signals Output By Control

*Purge time begins at pressure switch change over.

**ts=Safety time (S4563C=3 seconds [alternate 5 seconds]; S4565C=5 seconds)

If at any stage the flame fails, the control will go to "lockout". The red light will illuminate and the control will need to be manually reset before any further start attempt can be made.

Figure 11: Gas Valve for Heater (Models 22 - 60)

End View
		Fixing Screw
Ignition		Ignition Control
Output		(Plugs into Gas Valve)
Flame
Probe	Regulator
Connection	Regulator
	(Under Cover)	12 Cable Connector
		12 Cable Connector
	Outlet Pressure
	Inlet Pressure
		Gas Inlet
		25

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Contents Supplier, call the Fire Department Immediately call your local gasSupplier after leaving the building Follow the gas supplier’s InstructionsPage Roberts-Gordon, LLC Page Table of Figures Page Product Approval Corrosive Chemicals Heater SafetyInstaller Responsibility Clearances to CombustiblesGas Supply Minimum Required Installation ClearancesCritical Considerations 3.1 Basic Information VentilationInstallation Clearances and Clearances to Combustibles End View Rear View Specifications 4.1 CtuaDimension Data Ctua All Models Top ViewCTUB, Ctuc and Ctud Dimension Data CTUB, Ctuc and CtudGeneral Technical Data Table Gas rates corrected to standard conditions 1013.25 mbar 15 C Handling Heater Installation 5.1 GeneralType 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 B GAS PipingConnections Option aWiring and Electrical Information 50 Hz Ctua Wiring Diagram ModelsSite Wiring CTUB/C Wiring Diagram Models Site Wiring230 V 1 Ø 50 Hz Ignition ModuleRUN For external fan wiring Ctud Wiring Diagram ModelsSite Wiring and Electrical Information Mechanical Checks CommissioningLouvres Electrical ChecksEnd View Automatic Burner Control Box SequenceCheck Gas Rate Combustion TestingTurning Off the Heater Complete the Commissioning External ControlsInstruction to the User Lighting Instructions To Turn On Heater Burner Lockout Reset ButtonHeater Operation Common User Controls Thermostat Limit ThermodiscSimple Fault Finding Burner Faults Simple Fault FindingTo Turn the Heater Off Gas Control Valve Maintenance Burner Maintenance13.3 Fan/Motor Assembly Maintenance Heat Exchanger MaintenanceBurner Conversion Conversion Between Gases 14.1 GeneralGas Valves Start Conduct Commissioning procedure as shown on Page 24, SectionFor your safety and optimum heater performance Troubleshooting For Automatic Ignition Burner SystemsConduct Commissioning procedure as shown Troubleshooting for Solenoid Valves Troubleshooting for Flame Supervision SystemRemoval and Replacement Parts Burner Injectors Burner CompartmentIgnition Electrode and Flame Probe Remove screws securing outlet flange to the flue adapter RG P/N Pressure SwitchCtub & Ctuc Centrifugal Fan/Guard/Motor Assembly Ctua Axial Fan/Guard/Motor AssemblyFan Removal and Replacement To Replace the Fan AssemblyFan Data Centrifugal Fan OrientationPage 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.