They complement GSW's portfolio of high performance residential and commercial gas water heating solutions. John Wood® also offers a full-range of accessories that makes installation quick and easy. The unique snap-together design of our N-Vent system saves time and money. N-Vent telescopic elements completely eliminate the need to cut vent pipe. As a green building product it's environmentally friendly too! John Wood® water heaters are extremely energy efficient, maximizing output while maintai

INSTRUCTION. Read these instructions thoroughly before startin. TABLE OF CONTENTS I) Introduction ............................................................2 II) Air Requirements....................................................3 III) Gas Connections....................................................5 IV) Water Pipe Connections ........................................5 V) Venting ..................................................................6 VI) Lighting & Operating Instructions ......

GSW Units/parts must be replaced with GSW or John Wood products to be eligible for Warranty. This Warranty is available to the original owner of a Unit installed within the boundaries of continental United States, of Canada, or their territories. Consumers must retain point-of-sale proof of purchase to validate warranty entitlement. This Warranty does not cover components not manufactured by GSW, such as oil burners, which carry the warranty given by the manufacturer thereof, copy of which warra

• Do not touch any electrical switch; do not use any phone in your building. • Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions. • If you cannot reach your gas supplier, call the fire department. WHAT TO DO IF YOU SMELL GAS PART NO. 72090 REV. D (07-11) GSW Water Heating is a division of A. O. Smith Enterprises Ltd. This page intentionally left blank. May be used for notes or to record other installation information. – 2– TABLE OF CONTENTS I) INT

- Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause injury or - Installation and service must be performed by a qualified installer, or the gas supplier. other appliance. -WHAT TO DO IF YOU SMELL GAS · Do not try to light any appliance. property damage. Refer to this manual. For assistance or additional information, consult a qualified installer, service agenc

Filling & Draining Tank ... Installation Checklist ....... Temperature Adjustment. .1 .1 .2 .2 .2 III) IV) V) VI) Service And Maintenance ..............................2 to 3 VII) Trouble-Shooting....................................................3 VIII) Pressure Buildup (Thermal Expansion) ................4 IX) Warranty................................................................5 PLEASE RETAIN THESE INSTRUCTIONS IN A SAFE LOCATION FOR FUTURE REFERENCE A FOR YOUR SAFETY • D

For assistance or additional infor- mation, consult a qualified installer, serv- ice agency, or the gas utility. FOR YOUR SAFETY • Do not store or use gasoline or other flammable vapours and liquids in the vicinity of this or any other appliance. • Installation and service must be per- formed by a qualified installer, service agency or the gas utility. WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, per- sonal inj

Contact a licensed plumber or the local plumbing authority. 4. If installing the water heater in a closed water system, install an expansion tank in the cold water line as specified under “Closed System/Thermal Expansion”. 5. Install a shut-off valve in the cold water inlet line. It should be located close to the water heater and be easily accessible. The owner/operator must be shown the location of this valve and be given instructions on how to use it to shut off the water to the heater. NOTE:

Refer to this manual. For assistance or additional information, consult a qualified Oil-Burner Technician or your oil supplier. FOR YOUR SAFETY • Do not store or use gasoline or other flammable vapours and liquids in the vicinity of this or any other appliance. • Installation and service must be performed by a qualified Oil-Burner Technician or your oil supplier. WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, per

INSTRUCTION. Read and understand these instructions thoroughly before attemptin. any installation or service. TABLE OF CONTENTS I) Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 II) Component Identification . . . . . . . . . . . . . . . . . .3 III) Recovery Rates . . . . . . . . . . . . . . . . . . . . . . . . .4 IV) Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-9 V) Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . .10-17 VI) Operation