A.O. Smith HYB-90N warranty Table Of Contents, Important Information

TABLE OF CONTENTS

SAFE INSTALLATION, USE AND SERVICE		3	OPERATING INSTRUCTIONS	33
GENERAL SAFETY		4	Display Panel	33
INTRODUCTION		6	Wiring Diagram	35
Get To Know Your Water Heater - Gas Models. . . .		. 8	Lighting Instructions	36
Replacement Parts And Deliming Products		. 8	Heat Cycle Definitions	37
INSTALLATION CONSIDERATIONS		9	Temperature Regulation	38
Rough In Dimensions		. 9	Unique Hybrid Features	39
Water Piping - Mixing Valve Usage		.11	Temperature Regulation	41
Facts To Consider About Location		12	Constant Output Temperature Control	42
Handle Installation		13	Start Up Conditions	42
Earthquake Zones		14	Operational Conditions	42
Combustion Air And Ventilation		16	MAINTENANCE	43
Appliances In Unconfined Spaces		16	Housekeeping	43
Appliances In Confined Spaces		16	Venting System Inspection	43
Chemical Vapor Corrosion		18	Burner Operation And Inspection	43
Water Piping		18	Anode Rod Inspection	43
Closed Water Systems		18	Anode Rod Replacement	44
Thermal Expansion		18	Temperature-pressure Relief Valve Operation . . . .	44
Hard Water		19	Motors	44
Temperature-pressure Relief Valve		19	Snow Accumulation	44
Gas Piping		21	Cleaning The Inlet Water Filter	44
Sediment Traps		21	Cleaning The Heat Engine	45
Gas Line Purging		22	Flushing The Heat Exchanger (Lime Build-up) . . . .	45
High Altitude Installations		22	Draining The Tank	46
Flooding/freezing		22	Fault Indication And Error Codes	46
Filling The Water Heater		22	Diagnostic Display	47
Venting		22	TROUBLESHOOTING	51
Vent Pipe Termination		23	Service	53
Planning The Vent System		23	Leakage Checkpoints	53
Condensate		25	Parts Identification	54
Installation Of Vent System		25	Replacement Parts	56
Vent Terminal Installation, Sidewall		25	LIMITED RESIDENTIAL GAS WARRANTY	57
Sequence Of Installations		26	NOTES	58
Installation Sequence		26
Installation Of Vent System, Sidewall		27
Installation Of Vertical Vent System		27
Vent Pipe Preparation		28
Connection To Vent Pipe		30
U.S. Power Vent		31
Electrical Connections		32
CALIBRATION		32
	Fill out and keep with water heater.
	IMPORTANT INFORMATION
	Model Number _________________________________________
	Serial Number__________________________________________
	Installation Information:
	Date Installed __________________________________________
	Company’s Name _______________________________________
	Street or P.O. Box_______________________________________
	City, State, and Zip Code _________________________________
	Phone Number ____________ Plumber’s Name_______________

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