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Roberts Gorden
125, 75, 100 service manual
Models:
125
100
75
1
56
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
UHD-Series Tubular Duct Furnace Low Profile Range
Models UHDXS
Combat
If you smell gas
Page
Modèles UHDXS
Manuel d’installation, d’operation, et de service
Combat
AVERTISSEMENT
Page
2012 Roberts-GordonLLC
Page
TABLE OF FIGURES
Page
SECTION 1 HEATER SAFETY
1.1 Manpower Requirements
1.2 Safety Labels and Their Placement
1.3 California Proposition
2 of
Figure 1 UHDXS 75 Label Placement
For separated combustion units only
Combatby
Figure 2 UHDXS 100-125Label Placement
Combat
SECTION 2 INSTALLER RESPONSIBILITY
2.1 Wall Tag
2.2 Corrosive Chemicals
2.3 National Standards and Applicable Codes
3.4 Minimum Required Installation Clearances
SECTION 3 CRITICAL CONSIDERATIONS
3.1 Basic Information
6, Figure 3 for details
Figure 3 Clearances to Combustibles
Fire Hazard
4.2 Clearances to Combustibles
5.1 Gas Codes
5.2 Aircraft Hangars
5.3 Parking Structures and Repair Garages
5.4 Electrical
5.6 High Altitude
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
6.1.1 Minimum Inlet Duct Length
6.2 Shelf Mounting and Suspension
Crush Hazard Use 3/8 threaded rod minimum
6.3 Wall Mounting
Figure 5: Suspension Methods
Figure 6 Shelf-MountingMethods
Figure 7 Wall Shelf Mounting and Suspension
Existing cabinet screws must be re-used
11 of
Heaters may be installed vented or unvented
7.3 Vent Installation
SECTION 7 VENTING
Carbon Monoxide Hazard
7.3.1Standard Vented Heaters Models UHDX
7.4 Unvented Operation
7.5 Horizontal Venting
7.6 Vertical Venting
Figure 8 Vent and Roof Detail
7.7.1 Maximum Vent Lengths
7.8 Vent Material
15 of
Model
UHDX
90502102
Requirements
Figure 12 Concentric Vent Box
17 of
18 of
Description
Part Number
Concentric Vent Kit
8.1 Separated Combustion Installation
8.2 Unvented Installation
SECTION 8 AIR SUPPLY
Explosion Hazard
Gas can leak if not installed properly
SECTION 9 GAS PIPING Fire Hazard
Connect gas supply according to Figure
9.1 Connections
when attaching flexible gass connector
Figure 14 Gas Connection
Product Damage Hazard
Hold gas nipple securely with pip wrench
SECTION 10 WIRING
10.2 Low Voltage Thermostat with One Heater
10.1 Positioning Thermostats
DANGER
10.3 UHDXS Series Internal Wiring Diagram
10.4 UHDXS Series Ladder Wiring Diagram
10.5 Electrical Connection to the Heater
SECTION 11 OPERATION AND MAINTENANCE
heater before service
before service
during installation
Figure 15 Automatic Burner Control Sequence
Figure 16 Gas Valve for Models UHDXS
END VIEW
before a one hour lockout
11.2.3 Pressure Switch
Check Gas Rate
11.2.4 Turning Off the Heater
11.2.5 External Controls
12.2.1 Manual Reset Limit Switch
The fault must be traced and repaired
SECTION 12 USER INSTRUCTIONS
12.1 Heater Operation
Figure 17 Manual Reset Limit Switch
12.4 Simple Troubleshooting
12.4.1 Simple Troubleshooting Burner Faults
Figure 18 LED Diagnostic Codes
13.2 Burner Maintenance
13.3 Heat Exchanger Maintenance
13.4 Gas Valve Maintenance
SECTION 13 SERVICING
13.7 Maintenance Checklist
Installation Code and Annual Inspections
Annual Fall Start-up
The Vicinity of the Heater
when installed
Combustion Air Intake
Pipe
Heat Exchanger
SECTION 14 TROUBLESHOOTING
heater before service
before service
during installation
14.1General
35 of
36 of
TROUBLESHOOT ENDS. No
14.3 Troubleshooting for Flame Supervision System
38 of
14.4 Troubleshooting for Gas Valves
14.5 Troubleshooting for Flue Blower
SECTION 15 REPLACEMENT PARTS
Burner Components
15.1 Gas Valve
DANGER
15.2 Burner Compartment
15.2.1 Burner Injectors
Ensure gas tight fitting of injectors
Ensure correct alignment with burners
15.3 Ignition Electrode and Flame Probe
15.4 Heat Exchanger
15.5 Flue Blower Vertical Installation
15.6 Pressure Switch
15.8 Limit Switches
15.8.1 Removal and Replacement
15.7 Ignition Control
SECTION 16 SPECIFICATIONS 16.1 Dimension Data
44 of
45 of
16.2 General Technical Data Table
16.3 Technical Data Table
46 of
WARRANTY IS VOID IF
ROBERTS-GORDONLLC WILL PAY FOR
ROBERTS-GORDONLLC WILL NOT PAY FOR
Roberts-GordonLLC
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Mail or Fax to
OWNER WARRANTY REGISTRATION CARD
About the Installer
Purchased From if different than installer
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