Roberts Gorden 125 - Manual (Page 5)

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TABLE OF CONTENTS
SECTION 1: Heater Safety...................................................... 1
1.1 Manpower Requirements ............................................. 1
1.2 Safety Labels and Their Placement ............................. 1
1.3 California Proposition 65 .............................................. 1
SECTION 2: Installer Responsibility ..................................... 4
2.1 Wall Tag ....................................................................... 4
2.2 Corrosive Chemicals.................................................... 4
2.3 National Standards and Applicable Codes .................. 4
SECTION 3: Critical Considerations ..................................... 5
3.1 Basic Information ......................................................... 5
3.2 Manufactured Units...................................................... 5
3.3 Location and Suspension ............................................ 5
3.4 Minimum Required Installation Clearances ................. 5
3.5 Ventilation .................................................................... 5
3.6 Gas Supply .................................................................. 5
3.7 Electrical Supply .......................................................... 5
3.8 Vent.............................................................................. 5
SECTION 4: Clearances to Combustibles............................. 6
4.1 Required Clearances to Combustibles......................... 6
4.2 Clearances to Combustibles ........................................ 6
SECTION 5: National Standards and Applicable Codes ..... 7
5.1 Gas Codes................................................................... 7
5.2 Aircraft Hangars ........................................................... 7
5.3 Parking Structures and Repair Garages ...................... 7
5.4 Electrical ...................................................................... 7
5.5 Venting......................................................................... 7
5.6 High Altitude ................................................................ 8
SECTION 6: Duct Heater Installation..................................... 9
6.1 General ........................................................................ 9
6.2 Shelf Mounting and Suspension ................................ 10
6.3 Wall Mounting ............................................................ 10
SECTION 7: Venting.............................................................. 12
7.1 Changing Vent and Air Intake Orientation .................. 12
7.2 Venting ....................................................................... 12
7.3 Vent Installation .......................................................... 12
7.4 Unvented Operation ................................................... 13
7.5 Horizontal Venting ...................................................... 13
7.6 Vertical Venting........................................................... 13
7.7 Length Requirements ................................................. 13
7.8 Vent Material............................................................... 14
7.9 Replacing an Existing Heater in a Venting System..... 14
SECTION 8: Air Supply ......................................................... 18
8.1 Separated Combustion Installation ............................ 18
8.2 Unvented Installation ................................................. 18
8.3 Building Ventilation .................................................... 18
8.4 Outside Combustion Air Supply ................................. 18
SECTION 9: Gas Piping ........................................................ 19
9.1 Connections............................................................... 19
SECTION 10: Wiring .............................................................. 21
10.1 Positioning Thermostats .......................................... 21
10.2 Low Voltage Thermostat with One Heater................21
10.3 UHD[X][S] Series Internal Wiring Diagram ...............22
10.4 UHD[X][S] Series Ladder Wiring Diagram................23
10.5 Electrical Connection to the Heater ..........................24
SECTION 11: Operation and Maintenance ..........................25
11.1 Pre-Start-Up Checks .................................................25
11.2 Begin Start-Up ..........................................................25
11.3 Complete Start-Up ....................................................27
SECTION 12: User Instructions............................................28
12.1 Heater Operation......................................................28
12.2 Common User Controls............................................28
12.3 Lighting Instructions .................................................29
12.4 Simple Troubleshooting ............................................29
SECTION 13: Servicing .........................................................30
13.1 Servicing Instructions...............................................30
13.2 Burner Maintenance.................................................30
13.3 Heat Exchanger Maintenance ..................................30
13.4 Gas Valve Maintenance ...........................................30
13.5 Flue Blower ..............................................................30
13.6 Venting and Air Intake Pipe ......................................30
13.7 Maintenance Checklist .............................................31
SECTION 14: Troubleshooting .............................................33
14.1 General ....................................................................34
14.2 Troubleshooting For Automatic Ignition Burner
Systems ...................................................................35
14.3 Troubleshooting for Flame Supervision System .......36
14.4 Troubleshooting for Gas Valves ................................37
14.5 Troubleshooting for Flue Blower ...............................37
SECTION 15: Replacement Parts .........................................38
15.1 Gas Valve .................................................................38
15.2 Burner Compartment ...............................................39
15.3 Ignition Electrode and Flame Probe .........................40
15.4 Heat Exchanger .......................................................40
15.5 Flue Blower Vertical Installation ...............................41
15.6 Pressure Switch........................................................42
15.7 Ignition Control .........................................................42
15.8 Limit Switches ..........................................................42
SECTION 16: Specifications.................................................43
16.1 Dimension Data........................................................43
16.2 General Technical Data Table ..................................44
16.3 Technical Data Table ................................................44
SECTION 17: ROBERTS GORDON ® COMBAT ®
UHD-Series Warranty.....................................46