TABLE OF CONTENTS

SECTION 1: Heater Safety

1

SECTION 11: User Instructions

22

1.1 Manpower Requirements

1

11.1 User Instructions

22

SECTION 2: Installer Responsibility

2

11.2 Heater Operation

22

2.1

Wall Tag

2

11.3 Lighting Instructions

22

2.2

Corrosive Chemicals

2

11.4 Simple Troubleshooting

22

2.3

National Standards and Applicable Codes

2

SECTION 12: Servicing

24

SECTION 3: Critical Considerations

3

12.1

Servicing Instructions

24

3.1

Basic Information

3

12.2

Burner Maintenance

24

3.2

Location and Suspension

3

12.3

Fan/Motor Assembly Maintenance

24

3.3

Minimum Required Installation Clearances

3

12.4

Heat Exchanger Maintenance

24

3.4

Clearances to Combustibles

3

12.5

Gas Valve Maintenance

24

3.5

Ventilation

3

12.6

Flue Blower

24

3.6

Gas Supply

3

12.7

Venting and Air Intake Pipe

24

3.7

Electrical Supply

3

12.8

Maintenance Checklist

25

3.8

Vent

3

SECTION 13: Troubleshooting

27

3.9

Separated Combustion Installation

3

13.1

General

27

SECTION 4: National Standards and Applicable Codes

5

13.2

Troubleshooting For Automatic Ignition

 

4.1

Gas Codes

5

 

Burner Systems

28

4.2

Aircraft Hangars

5

13.3

Troubleshooting for Flame Supervision System

29

4.3

Parking Structures and Repair Garages

5

13.4

Troubleshooting for Gas Valves

30

4.4

Electrical

5

13.5

Troubleshooting for Flue Blower

30

4.5

Venting

5

SECTION 14: Replacement Parts

31

4.6

High Altitude

5

14.1

Gas Valve

31

SECTION 5: Major Components

6

14.2

Burner Compartment

32

5.1

General

6

14.3

Ignition Electrode and Flame Probe

33

5.2

Suspension

6

14.4

Heat Exchanger

34

SECTION 6: Venting

7

14.5

Louvers and Louver Spring

34

6.1

Venting

7

14.6

Flue Blower

35

6.2

Vent Installation

7

14.7

Pressure Switch

36

6.3

Unvented Operation

8

14.8

Ignition Control

36

6.4

Horizontal Venting

8

14.9

Axial Fan/Guard/Motor Assembly

36

6.5

Vertical Venting

8

14.10 Limit Switches

37

6.6

Length Requirements

8

SECTION 15: Specifications

38

6.7

Vent Material

9

15.1

Standard (Models 150 - 400) UHA[S] Series

 

SECTION 7: Air Supply

13

 

Dimension Data

38

7.1 Separated Combustion Installation

13

15.2

General Technical Data Table (All Models)

39

7.2 Unvented Installation

13

15.3

Technical Data Table (All Models)

39

7.3 Building Ventilation

13

SECTION 16: The ROBERTS GORDON® COMBAT®

 

7.4 Outside Combustion Air Supply

13

 

UHA-Series Warranty

41

SECTION 8: Gas Piping

14

 

 

 

8.1

Connections

14

 

 

 

SECTION 9: Wiring

15

 

 

 

9.1

Positioning Thermostats

15

 

 

 

9.2

Low Voltage Thermostat with One Heater

15

 

 

 

9.3

UHA[S] Series Internal Wiring Diagram

16

 

 

 

9.4

UHA[S] Series Ladder Wiring Diagram

17

 

 

 

9.5

Electrical Connection to the Heater

18

 

 

 

SECTION 10: Operation and Maintenance

19

 

 

 

10.1 Pre-Start-Up Checks

19

 

 

 

10.2 Begin Start-Up

19

 

 

 

10.3 Complete the Start-Up

21

 

 

 

©2008 Roberts-Gordon LLC

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Roberts Gorden 400, 200, 350, 150, 300, 175, 225 250 service manual Roberts-Gordon LLC

225 250, 175, 300, 400, 150 specifications

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