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 ......

• 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

48245 BLACK L1 HOT LIMIT T JUMPER WHITE L2 NEUTRAL BLOCKED T VENT SAFETY GROUND SWITCH F (CANADA JUNCTION BOX ONLY) F CAD CELL OIL VALVE ORANGE BURNER MOTOR IGNITOR Figure 11 TYPICAL PRIMARY CONTROL BURNER JUNCTION BOX WIRING (48245). . 11 . Startup Installation Checklis. Check Here NOTE: refer to the instruction manual supplied with the burner for installation, start up and adjustment. MAKE SURE THAT THE HEATER IS FULL OF WATER. See .Filling the Water Heater. section. DO NOT ATTEMPT TO START BU

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

-WHAT TO DO IF YOU SMELL GAS -Do not try to light any appliance. -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. - Installation and service must be performed by a qualified installer, service agency or the gas supplier. READ THESE INSTRUCTIONS THOROUGHLY BEFORE STARTING AND RETAIN THESE INSTRUCTIONS IN

. . . . . . . . . . . . . . . . . . . . . . . . . . . .3 II) Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 III) Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 IV) Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 V) Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 PLEASE RETAIN THESE INSTRUCTIONS IN A SAFE LOCATION FOR F

Description The JOHN WOOD series of storage booster tanks, available in 40, 50 or 80 gallon sizes, have been designed to supply hot water for domestic use when combined with a tankless coil boiler or other water heating source. Each tank is equipped with an adjustable thermostat, pre-wired and ready for connection to a circulator pump (not supplied). These tanks are not constructed to ASME requirements and should not be used for such applications. II) SAFET. Relief Valve Requirements WARNING For

INSTRUCTION. For Brands. GSW. John Wood. SpaceSaver. GSW Moffa. TABLE OF CONTENTS I) Introduction . . . . . . . . . . . . . . . . . . . . . .2 II) Safety . . . . . . . . . . . . . . . . . . . . . . . . . .2 III) Installation . . . . . . . . . . . . . . . . . . . . . . .2 IV) Operation . . . . . . . . . . . . . . . . . . . . . . .3 V) Maintenance . . . . . . . . . . . . . . . . . . . . .4 Warranty . . . . . . . . . . . . . . . . . . . . . . . .6 PLEASE RETAIN THESE INSTRUCTIONS IN . SAFE LOCATION

Air Supply CAUTIO. IF AN ALL-HOUSE VENTILATION FAN IS USED, A SEPARATE OUTSIDE AIR DUCT MUST BE USED AND DUCTED TO THE FURNACE ROOM AND/OR ROOM WHERE THE WATER HEATER IS LOCATED. In Canada: If the water heater is installed in a house built to the requirements of the .National Building Code of Canada, 1985., or a subsequent edition, the space shall be provided with a air inlets as outlined below, or have a mechanical air-supply system of sufficient equivalent capacity. If a mechanical air- supply