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Roberts Gorden
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Household Appliance
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Gas Heater
Roberts Gorden
225, 200, 350, 150, 400, 250, 300, 175 service manual
Models:
175
225
300
250
400
150
350
200
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Troubleshooting
Specs
Install
UHAS Series Internal Wiring Diagram
use only genuine ROBERTS GORDON replacement parts
Warranty
Maintenance
Wiring
LED Diagnostic Codes
Axial Fan/Guard/Motor Assembly
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Contents
Models UHAS 150
Combat
UHA-Series Tubular Unit Heaters Standard Range
If you smell gas
Page
SECTION 13 Troubleshooting
SECTION 1 Heater Safety
SECTION 2 Installer Responsibility
SECTION 14 Replacement Parts
Page
TABLE OF FIGURES
Page
SECTION 1 HEATER SAFETY
1.1 Manpower Requirements
2.2 Corrosive Chemicals
SECTION 2 INSTALLER RESPONSIBILITY
2.1 Wall Tag
2.3 National Standards and Applicable Codes
3.4 Clearances to Combustibles
3.3 Minimum Required Installation Clearances
3.9 Separated Combustion Installation
3.5 Ventilation
Clearance to Vent 2 5 cm
4.3 Parking Structures and Repair Garages
4.1 Gas Codes
4.2 Aircraft Hangars
4.4 Electrical
5.2 Suspension
SECTION 5 MAJOR COMPONENTS 5.1 General
Figure 2 Suspension Methods
6.1.1 United States Requirements
6.2 Vent Installation
SECTION 6 VENTING 6.1 Venting
6.1.2 Canadian Requirements
6.5 Vertical Venting
6.3 Unvented Operation
6.4 Horizontal Venting
6.6 Length Requirements
6.7 Vent Material
Figure 3 Vent and Roof Detail
SIDE VIEW
TOP VIEW
Figure 7 Concentric Vent Box
SECTION 6 VENTING
Horizontal
Vertical Option 10 3 m Maximum
Option
SECTION 7 AIR SUPPLY
7.1 Separated Combustion Installation
7.2 Unvented Installation
7.3 Building Ventilation
8.1 Connections
SECTION 8 GAS PIPING
Figure 9 Gas Connection
9.1.1 Fan Control
SECTION 9 WIRING
9.1 Positioning Thermostats
9.2 Low Voltage Thermostat with One Heater
9.3 UHAS Series Internal Wiring Diagram
9.4 UHAS Series Ladder Wiring Diagram
9.5 Electrical Connection to the Heater
Note Junction box is not provided with heater
10.1.1 Louvers
SECTION 10 OPERATION AND MAINTENANCE
10.1 Pre-Start-UpChecks
10.1.2 Electrical Checks
Regulator
Figure 10 Automatic Burner Control Sequence
Figure 11: Gas Valve for Models UHAS
Gas Inlet
10.2.4 Turning Off the Heater
10.2.3 Pressure Switch
Check Gas Rate
10.2.5 External Controls
Figure 12 LED Diagnostic Codes
11.5 Simple Troubleshooting
11.5.1 Simple Troubleshooting Burner Faults
11.2 Heater Operation
FOR YOUR SAFETY
If you smell gas
12.4 Heat Exchanger Maintenance
12.2 Burner Maintenance
12.3 Fan/Motor Assembly Maintenance
12.5 Gas Valve Maintenance
The Vicinity of the Heater
12.8 Maintenance Checklist
Installation Code and Annual Inspections All
See Page 3, Section
Window
when installed
Burner Observation
Combustion Fan Scroll
Explosion Hazard
SECTION 13 TROUBLESHOOTING 13.1 General
Start
Do not touch ignition components
Start
Electrical Shock Hazard
Voltage from ignition components is high
13.3 Troubleshooting for Flame Supervision System
For your safety and optimum heater performance
13.4 Troubleshooting for Gas Valves
13.5 Troubleshooting for Combustion Fan
use only genuine ROBERTS GORDON replacement parts
Burner Components
SECTION 14 REPLACEMENT PARTS
GAS VALVE IS USED WHEN REPLACING THESE CONTROLS
14.1 Gas Valve
UHAS
14.2 Burner Compartment
14.2.1 Burner Injectors
UHAS
14.3 Ignition Electrode and Flame Probe
14.4 Combustion Fan Vertical Installation
14.5 Pressure Switch
14.8.1 Removal and Replacement
14.7 Axial Fan/Guard/Motor Assembly
14.8 Limit Switches
14.7.1 Fan Removal and Replacement
Model
SECTION 15 SPECIFICATIONS
SECTION 15 SPECIFICATIONS
UHAS
Model
15.2 General Technical Data Table All Models
15.3 Technical Data Table All Models
UHAS
ROBERTS-GORDONWILL NOT PAY FOR
WARRANTY IS VOID IF
ROBERTS-GORDONWILL PAY FOR
U.S.A
Page
Page
close to heater
Installation Clearances
Fire Hazard
injury or property damage
