Roberts Gorden CTU 22 TO 115 service manual GAS Piping, Connections, Option a, Option B

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COMBAT® CTU UNIT HEATERS INSTALLATION OPERATION AND SERVICE MANUAL

SECTION 9: GAS PIPING

WARNING

Fire Hazard

Connect gas supply according to Figure 9.

Gas can leak if not installed properly.

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

It is important that the gas supply pipe and the electrical connections do not support any of the heater’s weight.

9.1 Connections

Connect the heater to the gas supply ensuring that the final connections are as follows:

•Gas supply pipe work is run in medium or heavy gauge tubing in compliance with local and national codes.

•The gas supply pipe is adequately sized to carry the total volume of gas for the complete installation.

•An isolating valve and union connection should be used and fitted into the supply adjacent to the heater.

•For suspended heaters, use an approved metal flexible connection between the isolating valve and the heater. To reduce pressure loss, use one pipe size larger than the heater gas connection.

A gas meter is connected to the service pipe by the gas supply company. An existing meter should be checked, preferably by the company, to ensure that the meter is adequate for the rate of gas supply required.

Installation pipes must be fitted in accordance with local and national codes. Pipe work from the meter to the heater(s) must be of adequate size. Pipes of smaller size than the heater inlet gas connection should not be used.

IMPORTANT - The complete installation must be purged and tested for gas soundness in accordance with local and national codes.

Figure 9: Gas Connection with Stainless Steel Flex Connector

•Hold gas nipple securely with pipe wrench when attaching the flex gas connector.

•Do not twist flexible gas connector.

•Ensure all joints are gas tight.

Do not bend flexible gas connector sharply.

Option A:

Stainless Steel

Flex Gas

Connector

 

Option B:

Gas Isolating Valve

Medium or Heavy

Gauge Tubing

 

Gas Connector

 

Drip Leg

Union

Cap

Connection

 

14

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Contents Immediately call your local gas Supplier after leaving the buildingFollow the gas supplier’s Instructions Supplier, call the Fire DepartmentPage Roberts-Gordon, LLC Page Table of Figures Page Product Approval Heater Safety Installer ResponsibilityClearances to Combustibles Corrosive ChemicalsMinimum Required Installation Clearances Critical Considerations 3.1 Basic InformationVentilation Gas SupplyInstallation Clearances and Clearances to Combustibles Specifications 4.1 Ctua Dimension Data Ctua All ModelsTop View 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 HandlingAir Intake Terminal Cover Flue Installation 6.1 Flue InstallationType B22 Appliance Vertical and Horizontal Flue Termination Type B22 Appliance AIR Supply Ctud Heaters Optional Heater ConfigurationsDistribution Duct Work for CTUB, Ctuc and Ctud Heaters GAS Piping ConnectionsOption a 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 Commissioning LouvresElectrical Checks Mechanical ChecksAutomatic Burner Control Box Sequence End ViewTurning Off the Heater Combustion TestingCheck Gas Rate Instruction to the User External ControlsComplete the Commissioning Burner Lockout Reset Button Heater OperationCommon User Controls Thermostat Limit Thermodisc Lighting Instructions To Turn On HeaterTo Turn the Heater Off Simple Fault FindingSimple Fault Finding Burner Faults Burner Maintenance 13.3 Fan/Motor Assembly MaintenanceHeat Exchanger Maintenance Gas Control Valve MaintenanceGas Valves Conversion Between Gases 14.1 GeneralBurner Conversion Conduct Commissioning procedure as shown on Page 24, Section StartConduct Commissioning procedure as shown Troubleshooting For Automatic Ignition Burner SystemsFor your safety and optimum heater performance 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/NCtua Axial Fan/Guard/Motor Assembly Fan Removal and ReplacementTo Replace the Fan Assembly 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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