COMBAT® CTU UNIT HEATERS INSTALLATION OPERATION AND SERVICE MANUAL

16.6 Ignition Control

IT IS IMPORTANT THAT ONLY THE CORRECT IGNITION CONTROL SPECIFIED FOR EACH MODEL TYPE IS USED WHEN REPLACING THESE ITEMS.

16.6.1 S4565C Models 22 to 60

This control plugs onto the gas valve. Pull out 12 pin electrical connection. Pull out ignition cable and flame probe cable noting their positions

Release screw securing control to gas valve

Refit in reverse. Ensure correct location of ignition and flame probe cables. Ensure that the earth connection is made directly to the earth point on the gas valve.

16.6.2 S4563C Models 75 to 115

This control is mounted at the electrical mounting plate. Pull out the 3 cable connectors.

Pull out ignition cable, ignition earth and flame probe cable noting their positions. Remove the screws. Refit in reverse. Ensure correct location of ignition and flame probe cables.

16.7 CTUA Axial Fan/Guard/Motor Assembly

The axial fan unit for the CTUA heater is supplied completely assembled and balanced.

16.7.1 Fan Removal and Replacement

 

Remove the four screws

 

and rubber washers.

Description

Part Number

Axial Fan 16 in.

90710418

Axial Fan 500 mm.

90710419

16.7.2 To Replace the Fan Assembly

To replace the fan assembly, reverse the procedure shown above. Fit rubber washers to the guard mountings to reduce vibration.

•Check that the fan blades are free to rotate before turning on the power to the fan.

•Strictly comply with the colour code of the fan wires to ensure correct operation. See Page 16, Section 10.3 through Page 17, Section 10.4 wir- ing diagrams

•Use only genuine ROBERTS GORDON® replacement parts.

16.8CTUB & CTUC Centrifugal Fan/Guard/Motor Assembly

The direct drive fan/s for the CTUB & CTUC range is supplied as a complete assembly. Take careful note of the electrical connections of the fan before disconnecting from the terminals.

For the CTUC versions fitted with an inlet spigot assembly, the fans may be accessed through the removable covers on the sides, top and bottom of the spigot, as required.

16.8.1 Fan Removal and Replacement

20 mm x 5 mm Adhesive Seal

is applied to the flange.

Description

Part Number

Torin Fan DDC 270-270

A047

Torin Fan DDC 241-241

A049

Remove the fan by removing the fixing screws while supporting the weight of the fan (approx. 19 kg).

16.8.2 To Replace the Fan(s)

To reassemble, reverse the procedure shown above.

•Fit new rubber seal between the fan flange and the heater rear panel.

•Fit to the rear panel in the correct orientation as shown on Page 41, Figure 14.

•Strictly comply with the colour code of the fan wires to ensure correct operation. See Page 18, Section 10.5 through Page 20, Section 10.7 wiring diagrams.

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Roberts Gorden CTU 22 TO 115 Ignition Control, 16.6.1 S4565C Models 22 to, 16.6.2 S4563C Models 75 to, To Replace the Fans
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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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