- Roberts-Gordon user guide heater CTCU 7, CTCU 11, CTCU 15, CTCU 22, CTCU 27, CTCU

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TABLE OF CONTENTS
SECTION 1: Heater Safety......................................................2
SECTION 2: Installer Responsibility .....................................2
2.1 Clearances to Combustibles ........................................ 2
2.2 Corrosive Chemicals.................................................... 2
2.3 National Standards and Applicable Codes .................. 2
SECTION 3: Critical Considerations ..................................... 3
3.1 Basic Information.........................................................3
3.2 Location and Suspension ............................................ 3
3.3 Minimum Required Installation Clearances ................. 3
3.4 Clearances to Combustibles ........................................ 3
3.5 Ventilation ....................................................................3
3.6 Gas Supply ..................................................................3
3.7 Electrical Supply .......................................................... 3
3.8 Flue..............................................................................3
SECTION 4: Specifications ....................................................5
4.1 CTCUA (All Models) ....................................................5
4.2 General Technical Data Table (All Models) .................. 6
4.3 Technical Data Table (All Models)................................6
SECTION 5: Heater Installation..............................................7
5.1 General........................................................................7
5.2 Shelf Mounting and Suspension.................................. 7
5.3 Wall Mounting ..............................................................7
SECTION 6: Flue Installation .................................................9
6.1 Changing Flue and Air Intake Orientation....................9
6.2 Flue Installation............................................................9
6.3 Type C
12
, C
32
& C
62
Appliance ......................................9
6.4 Type B
22
Appliance.......................................................9
SECTION 7: Air Supply......................................................... 11
7.1 Room Sealed Installation ........................................... 11
7.2 Open Flued Installation .............................................. 11
7.3 Building Ventilation ..................................................... 11
SECTION 8: Gas Piping........................................................ 12
8.1 Connections............................................................... 12
SECTION 9: Wiring and Electrical Information................... 13
9.1 Electrical Supply ........................................................ 13
9.2 Remote Controls........................................................ 13
9.3 CTCUA Wiring Diagram Models 7 - 32 ...................... 14
SECTION 10: Commissioning.............................................. 15
10.1 Pre-Commission Checks.......................................... 15
10.2 Begin Commissioning .............................................. 15
10.3 Complete the Commissioning .................................. 17
SECTION 11: User Instructions............................................ 18
11.1 User Instructions....................................................... 18
11.2 Heater Operation ...................................................... 18
11.3 Common User Controls ............................................ 18
11.4 Lighting Instructions.................................................. 18
11.5 Simple Fault Finding ................................................. 19
SECTION 12: Servicing.........................................................20
12.1 Servicing Instructions .............................................. 20
12.2 Burner Maintenance ................................................ 20
12.3 Fan/Motor Assembly Maintenance...........................20
12.4 Heat Exchanger Maintenance.................................. 20
12.5 Gas Control Valve Maintenance............................... 20
12.6 Flue Fan...................................................................20
SECTION 13: Conversion Between Gases ..........................21
13.1 General ....................................................................21
13.2 Burner Conversion ...................................................21
13.3 Gas Valves ...............................................................21
SECTION 14: Troubleshooting .............................................22
14.1 General ....................................................................22
14.2 Troubleshooting For Automatic Ignition
Burner Systems .......................................................23
14.3 Troubleshooting for Flame Supervision System .......24
14.4 Troubleshooting for Solenoid Valves ........................25
14.5 Troubleshooting for Main Fan ...................................25
SECTION 15: Removal and Replacement Parts..................26
15.1 Gas Valve.................................................................26
15.2 Burner Compartment ...............................................27
15.3 Ignition Electrode and Flame Probe .........................28
15.4 Flue Fan Vertical Installation ....................................29
15.5 Pressure Switch........................................................30
15.6 Ignition Control .........................................................31
15.7 CTCUA Axial Fan/Guard/Motor Assembly ...............31
15.8 Fan and Limit Thermostats ......................................31