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Roberts Gorden
125, 75, 100 service manual
Models:
125
100
75
1
59
60
60
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Troubleshooting
Specifications
Install
UHDXS Series Internal Wiring Diagram
Safety Labels and Their Placement
Warranty
Maintenance
Wiring
Manual Reset Limit Switch
Temperature Rise and Pressure Drop Ranges
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Contents
If you smell gas
UHD-Series Tubular Duct Furnace Low Profile Range
Models UHDXS
Combat
Page
AVERTISSEMENT
Modèles UHDXS
Manuel d’installation, d’operation, et de service
Combat
Page
2012 Roberts-GordonLLC
Page
TABLE OF FIGURES
Page
1.3 California Proposition
SECTION 1 HEATER SAFETY
1.1 Manpower Requirements
1.2 Safety Labels and Their Placement
2 of
Figure 1 UHDXS 75 Label Placement
For separated combustion units only
Combatby
Figure 2 UHDXS 100-125Label Placement
Combat
2.3 National Standards and Applicable Codes
SECTION 2 INSTALLER RESPONSIBILITY
2.1 Wall Tag
2.2 Corrosive Chemicals
6, Figure 3 for details
3.4 Minimum Required Installation Clearances
SECTION 3 CRITICAL CONSIDERATIONS
3.1 Basic Information
Figure 3 Clearances to Combustibles
Fire Hazard
4.2 Clearances to Combustibles
5.4 Electrical
5.1 Gas Codes
5.2 Aircraft Hangars
5.3 Parking Structures and Repair Garages
5.6 High Altitude
6.1.1 Minimum Inlet Duct Length
SECTION 6 DUCT HEATER INSTALLATION 6.1 General
6.1.2 Temperature Rise and Pressure Drop Ranges
6.1.3 Air Flow and Temperature Rise Ranges
Figure 5: Suspension Methods
6.2 Shelf Mounting and Suspension
Crush Hazard Use 3/8 threaded rod minimum
6.3 Wall Mounting
11 of
Figure 6 Shelf-MountingMethods
Figure 7 Wall Shelf Mounting and Suspension
Existing cabinet screws must be re-used
Carbon Monoxide Hazard
Heaters may be installed vented or unvented
7.3 Vent Installation
SECTION 7 VENTING
7.6 Vertical Venting
7.3.1Standard Vented Heaters Models UHDX
7.4 Unvented Operation
7.5 Horizontal Venting
Figure 8 Vent and Roof Detail
7.7.1 Maximum Vent Lengths
7.8 Vent Material
90502102
15 of
Model
UHDX
Requirements
17 of
Figure 12 Concentric Vent Box
Concentric Vent Kit
18 of
Description
Part Number
Explosion Hazard
8.1 Separated Combustion Installation
8.2 Unvented Installation
SECTION 8 AIR SUPPLY
9.1 Connections
Gas can leak if not installed properly
SECTION 9 GAS PIPING Fire Hazard
Connect gas supply according to Figure
Hold gas nipple securely with pip wrench
when attaching flexible gass connector
Figure 14 Gas Connection
Product Damage Hazard
DANGER
SECTION 10 WIRING
10.2 Low Voltage Thermostat with One Heater
10.1 Positioning Thermostats
10.3 UHDXS Series Internal Wiring Diagram
10.4 UHDXS Series Ladder Wiring Diagram
10.5 Electrical Connection to the Heater
during installation
SECTION 11 OPERATION AND MAINTENANCE
heater before service
before service
before a one hour lockout
Figure 15 Automatic Burner Control Sequence
Figure 16 Gas Valve for Models UHDXS
END VIEW
11.2.5 External Controls
11.2.3 Pressure Switch
Check Gas Rate
11.2.4 Turning Off the Heater
12.1 Heater Operation
12.2.1 Manual Reset Limit Switch
The fault must be traced and repaired
SECTION 12 USER INSTRUCTIONS
Figure 18 LED Diagnostic Codes
Figure 17 Manual Reset Limit Switch
12.4 Simple Troubleshooting
12.4.1 Simple Troubleshooting Burner Faults
SECTION 13 SERVICING
13.2 Burner Maintenance
13.3 Heat Exchanger Maintenance
13.4 Gas Valve Maintenance
The Vicinity of the Heater
13.7 Maintenance Checklist
Installation Code and Annual Inspections
Annual Fall Start-up
Heat Exchanger
when installed
Combustion Air Intake
Pipe
during installation
SECTION 14 TROUBLESHOOTING
heater before service
before service
35 of
14.1General
TROUBLESHOOT ENDS. No
36 of
14.3 Troubleshooting for Flame Supervision System
38 of
14.4 Troubleshooting for Gas Valves
14.5 Troubleshooting for Flue Blower
DANGER
SECTION 15 REPLACEMENT PARTS
Burner Components
15.1 Gas Valve
Ensure correct alignment with burners
15.2 Burner Compartment
15.2.1 Burner Injectors
Ensure gas tight fitting of injectors
15.4 Heat Exchanger
15.3 Ignition Electrode and Flame Probe
15.5 Flue Blower Vertical Installation
15.7 Ignition Control
15.6 Pressure Switch
15.8 Limit Switches
15.8.1 Removal and Replacement
44 of
SECTION 16 SPECIFICATIONS 16.1 Dimension Data
45 of
16.2 General Technical Data Table
16.3 Technical Data Table
46 of
Roberts-GordonLLC
WARRANTY IS VOID IF
ROBERTS-GORDONLLC WILL PAY FOR
ROBERTS-GORDONLLC WILL NOT PAY FOR
Page
Purchased From if different than installer
Mail or Fax to
OWNER WARRANTY REGISTRATION CARD
About the Installer
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