Roberts Gorden UHA[X][S] 100, UHA[X][S] 45 Roberts-GordonLLC, Printed in U.S.A, Table Of Contents

TABLE OF CONTENTS

SECTION 1: Heater Safety		1	SECTION 10: Operation and Maintenance		29
1.1 Manpower Requirements		1	10.1	Pre-Start-Up Checks	29
1.2 Safety Labels and Their Placement		1	10.2	Begin Start-Up	29
SECTION 2: Installer Responsibility		5	10.3	Complete Start-Up	32
2.1	Wall Tag	5	SECTION 11: User Instructions		33
2.2	Corrosive Chemicals	5	11.1 User Instructions		33
2.3	National Standards and Applicable Codes	5	11.2 Heater Operation		33
SECTION 3: Critical Considerations		6	11.3 Common User Controls		33
3.1	Basic Information	6	11.4 Lighting Instructions		33
3.2	Manufactured Units	6	11.5 Simple Troubleshooting		34
3.3	Location and Suspension	6	SECTION 12: Servicing		35
3.4	Minimum Required Installation Clearances	6	12.1	Servicing Instructions	35
3.5	Clearances to Combustibles	6	12.2	Burner Maintenance	35
3.6	Ventilation	6	12.3	Fan/Motor Assembly Maintenance	35
3.7	Gas Supply	7	12.4	Heat Exchanger Maintenance	35
3.8	Electrical Supply	7	12.5	Gas Valve Maintenance	35
3.9	Vent	7	12.6	Flue Blower	35
SECTION 4: National Standards and Applicable Codes		8	12.7	Venting and Air Intake Pipe	36
4.1	Gas Codes	8	12.8	Maintenance Checklist	36
4.2	Aircraft Hangars	8	SECTION 13: Troubleshooting		38
4.3	Parking Structures and Repair Garages	8	13.1	General	38
4.4	Electrical	8	13.2	Troubleshooting For Automatic Ignition
4.5	Venting	8		Burner Systems	39
4.6	High Altitude	9	13.3	Troubleshooting for Flame Supervision System	40
SECTION 5: Major Components		10	13.4	Troubleshooting for Gas Valves	41
5.1	General	10	13.5	Troubleshooting for Flue Blower	41
5.2	Shelf Mounting and Suspension	10	SECTION 14: Replacement Parts		42
5.3	Wall Mounting	10	14.1	Gas Valve	42
SECTION 6: Venting		14	14.2	Burner Compartment	43
6.1	Changing Vent and Air Intake Orientation	14	14.3	Ignition Electrode and Flame Probe	44
6.2	Venting	14	14.4	Heat Exchanger	45
6.3	Vent Installation	14	14.5	Louver and Louver Springs	45
6.4	Unvented Operation	15	14.6	Flue Blower Vertical Installation	46
6.5	Horizontal Venting	15	14.7	Pressure Switch	47
6.6	Vertical Venting	16	14.8	Ignition Control	47
6.7	Length Requirements	16	14.9	Axial Fan/Guard/Motor Assembly	47
6.8	Vent Material	16	14.10 Limit Switches		48
6.9	Replacing an Existing Heater in a Venting System ....	16	SECTION 15: Specifications		49
SECTION 7: Air Supply		21	15.1	Dimension Data	49
7.1 Separated Combustion Installation		21	15.2	General Technical Data Table (All Models)	50
7.2 Unvented Installation		21	15.3	Technical Data Table (All Models)	50
7.3 Building Ventilation		21	SECTION 16: ROBERTS GORDON® COMBAT®
7.4 Outside Combustion Air Supply		21		UHA-Series Warranty	53
SECTION 8: Gas Piping		22
8.1	Connections	22
SECTION 9: Wiring		23
9.1	Positioning Thermostats	23
9.2	Low Voltage Thermostat with One Heater	23
9.3	Multiple Heater Wiring 30 - 45	24
9.4	Multiple Heater Wiring 60 - 125	25
9.5	Internal Wiring Diagram	26
9.6	Ladder Wiring Diagram	27
9.7	Electrical Connection to the Heater	28

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Printed in U.S.A.