Commercial Single-Wall Indirect Water Heaters

Built to meet the demands of commercial applications, our single-wall indirect water heaters provide long-lasting performance and efficiency.

2″ Non-CFC Foam Insulation – Covers the sides and top of tank to save energy by retarding loss of heat.
Factory Installed Nipples – For longer water heater life. Easier installation.
Fully Automatic Controls – immersed aquastat.
Immersed Adjustable Aquastat – Fast acting immersion aquastat for automatic temperature control (adjustable from 80°F to 160°F).
Ultonium^® Glass Lining with Microban^® – Applied to the interior surface of the steel for superior protection against corrosion. Microban® antimicrobial technology helps prevent the growth of bacteria, mold and mildew on the surface of the tank lining.
Three Protective Anode Rods – Provides added protection against corrosion for long trouble-free service.
Factory Installed Sparge Tube System – Cold inlet sediment reduction device helps to minimize sediment build up in tank. Increases first hour delivery of water while minimizing temperature build up at top of tank.
Heat Exchanger – Single wall 1½” glass coated (Ultonium^®) steel.
Supply and Return Connections – the 1″ NPT female connections are located on the front for both the boiler supply and boiler return.
Stand – by Heat Loss-less than ½°F per hour.
Brass Drain Valve.
T&P Relief Valve Installed – All models feature opening on side of tank.
5 Year limited Warranty on tank and heat exchanger.

Model_Number	Capacity	A. Ht. Floor to Heater Top	B. Jacket Dia.	C. Ht. Floor to T&P Conn.	D. Ht. Floor to Water Conn.	E. Ht. Floor to Exchanger Outlet	F. Ht. Floor to Exchanger Inlet	G. Ht. Floor to Aquastat	Aprox. Shp. Wt.
	U.S.Gal.	in.	in.	in.	in.	in.	in.	in.	lbs.
NSW-65C-5	54	59 ¼	22	53 ¹⁄₈	60	5 ³⁄₈	47 ¾	11 ½	273
NSW-80C-5	67	59	24	52 ⁷⁄₈	59 ¾	5 ³⁄₈	47 ¾	11 ½	300
NSW-120C-5	107	62 ½	28 ¼	55 ¾	63 ¼	6 ³⁄₈	48 ¾	11 ½	422