Roberts Gorden CTU 22 TO 115 Gas rates corrected to standard conditions 1013.25 mbar 15 C

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COMBAT® CTU UNIT HEATERS INSTALLATION OPERATION AND SERVICE MANUAL

4.4Technical Data Table Appliance Category II 2H/L 3B/P

 

Model

CTU-22

CTU-30

CTU-35

CTU-40

CTU-50

CTU-60

CTU-75

CTU-90

CTU-100

CTU-115

 

 

 

 

 

 

 

 

 

 

 

 

 

Heat Input

kW

27

33

39

48

61

70

95

111

119

 

134

Gross CV

(Btu/h) x (1000)

93

113

133

163

210

238

324

378

405

 

459

 

 

 

 

 

 

 

 

 

 

 

 

 

Heat Input

kW

25

30

35

43

55

63

86

100

107

 

121

Net CV

(Btu/h) x (1000)

84

102

119

147

189

215

292

341

365

 

414

 

 

 

 

 

 

 

 

 

 

 

 

 

Approximate

kW

23

27

32

39

51

58

78

91

98

 

111

Heat Output

(Btu/h) x (1000)

78

92

109

133

174

198

266

310

334

 

379

 

 

 

 

 

 

 

 

 

 

 

 

 

Thermostat Limit Thermodisc

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CTUA,B/C,D

°C

75

75

75

75

75

75

75

75

75

 

75

 

 

 

 

 

 

 

 

 

 

 

 

 

Natural Gas (G20) Data - Inlet Pressure 20 mbar (7.8 in WG) Min. 17 mbar (6.8 in WG) Max. 25 mbar (10 in WG)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Burner Pressure

mbar

8.3

8.7

8.5

9.4

9.3

8.5

6.1

6.0

6.2

 

6.3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

m3/h

2.6

3.2

3.7

4.5

5.8

6.6

9.0

10.5

11.3

 

12.8

Gas Rate

ft3/h

92

112

131

160

206

234

319

371

398

 

451

 

 

 

 

 

 

 

 

 

 

 

 

 

Natural Gas (G25) Data - Inlet Pressure 25 mbar (10 in WG) Min. 20 mbar (7.8 in WG) Max. 30 mbar (12 in WG)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Burner Pressure

mbar

12.2

12.7

12.5

14.0

13.6

13.2

9.2

9.3

9.2

 

10.2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

m3/h

3.03

3.33

4.31

4.78

6.14

6.98

9.49

11.06

11.86

 

13.43

Gas Rate

ft3/h

107

117

152

169

217

247

335

391

419

 

474

 

 

 

 

 

 

 

 

 

 

 

 

 

LPG Gas Propane (G31) Data - Inlet Pressure 37 mbar (14.6 WG) Min. 25 mbar (10 in WG) Max. 45 mbar (18 in WG)

 

Alternative where permitted 50 mbar (20 in WG) Min. 42.5 bar (17 in WG) Max. 57.5 mbar (23 in WG)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Burner Pressure

mbar

26.6

24.9

25.4

25.9

25.6

26.8

25.6

27.3

25.3

 

25.9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

m3/h

1.01

1.23

1.48

1.77

2.27

2.58

3.51

4.09

4.39

 

4.97

 

kg3/h

1.87

2.28

2.75

3.27

4.21

4.79

6.50

7.58

8.13

 

9.21

Gas Rate

liquid/h

3.7

4.5

5.4

6.4

8.3

9.4

12.8

14.9

16.0

 

18.1

 

 

 

 

 

 

 

 

 

 

 

 

LPG Gas Butane (G30) Data - Inlet Pressure 29 mbar (11,4 in WG) Min. 20 mbar (7.8 in WG) Max. 35 mbar (13.8 WG)

 

 

 

 

 

 

 

 

 

 

 

 

 

Burner Pressure

mbar

18.9

17.4

17.8

19.5

18.4

19.0

18.3

19.4

18.3

 

18.7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

m3/h

0.76

0.93

1.06

1.34

1.72

1.95

2.65

3.09

3.32

 

3.75

 

kg3/h

1.86

2.27

2.59

3.26

4.19

4.77

6.47

7.55

8.09

 

9.17

Gas Rate

liquid/h

3.2

4.0

4.5

5.7

7.3

8.3

11.3

13.2

14.1

 

16.0

 

 

 

 

 

 

 

 

 

 

 

 

 

Gas rates corrected to standard conditions 1013.25 mbar 15° C.

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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 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 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 ViewTurning Off the Heater Combustion TestingCheck Gas Rate Instruction to the User External ControlsComplete the Commissioning Common User Controls Thermostat Limit Thermodisc Burner Lockout Reset ButtonHeater Operation Lighting Instructions To Turn On HeaterTo Turn the Heater Off Simple Fault FindingSimple Fault Finding Burner Faults Heat Exchanger Maintenance Burner Maintenance13.3 Fan/Motor Assembly 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/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

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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.