Burnham AL35SL Alliance SL, 35 Gallon, Residential/Commercial Hydrastone Lined Indirect Water Heater, 10 Year Warranty

A Lifetime of Abundant Domestic Hot Water

There can be extensive demands for domestic (potable) hot water in both residential and commercial applications. Alliance LT and SL indirect-fired water heaters meet the need for domestic hot water with unique designs and uncompromising reliability.

Indirect Water Heaters vs. Conventional Direct-Fired Water Heaters

All “tank” water heaters store hot water to be used for household needs. A conventional direct-fired tank uses a 34,000 BTU heat source. By comparison, a similar indirect tank uses over 100,000 BTUs of boiler power! With its vastly greater heating capacity, an indirect water heater can actually create hot water faster than it leaves the tank. Your supply of hot water is virtually limitless!

How it Works

Cold domestic water entering the tank is heated as it is diffused across the surface of a uniquely designed heating coil. This heating coil contains hot water circulated by the boiler. An external control monitors tank water temperature for comfort and efficiency.

Hydrastone Lining (Alliance SL)

The concept of stone-lined water tanks is not a new one, and has been successful against corrosion for ages. In New England, a region prone to highly acidic water conditions, stone lined tanks are the norm. Actually, It’s not uncommon to find one in service for 30+ years.

What makes the Alliance SL unique is the Hydrastonelining itself. This 1/2” tank liner, comprised of a proprietary material similar to cement, protects the outer steel of the tank vessel from the corrosive action of water. When water initially enters the tank, it is absorbed into the Hydrastonelining permanently. This water loses its oxygen and becomes inert, non-corrosive water which then acts as a protective wall between the hot water and steel tank. This unique process and design makes Alliance SL water heaters a great choice for domestic hot water applications.

Alliance SL Standard Features

• Hydrastone seamless tank liner
• Steel tank vessel
• 1” (nominal) premium insulation
• Fiberglass outer shell
• Unique cold water diffuser
• TPI Thermostat Control module
• 3/4” MNPT cold water inlet connection*
• 3/4” FNPT hot water outlet connection*
• 3/4” MNPT boiler supply/return connections**
• 3/4” FNPT temperature & pressure relief valve
• Removable top mounted access plate with stainless steel flange reinforcements
• 10-year warranty (residential models only)
• 1-1/2” MNPT for commercial models ** 1” MNPT for commercial models

Benefits of Installing an Alliance SL

Easy Installation

The coil comes installed and can be easily turned to line up with the boiler and domestic water piping on replacement installations. (The AL119SL coil is shipped separately).

Easy Service

All connections are located on the top of the tank and all of the controls are located on the front of the tank for easy service and installation. The heat exchanger can be removed without having to drain the tank. (The AL119SL utilizes a side mounted coil).

Unique10/2/1 Warranty

A 10-year full tank replacement, two-year labor and one year on parts, which include the coil, come with every Alliance SL. An optional lifetime warranty is also available.