Weil-mclain aquaplus85 Indirect Water Heater 82 Gal 300K Btu

Product Description

The WEIL-MCLAIN aquaplus85 is an indirect-fired water heater built for large residential and light commercial domestic hot water applications. It carries an 82-gallon nominal storage capacity and a 300,000 BTU heat transfer rating, supporting high first-hour delivery and fast recovery when paired with a hydronic boiler. The tank is constructed from corrosion-resistant 316L stainless steel, and the internal heat exchanger is 304L stainless steel, both selected for long-term durability in closed-loop hydronic systems. At 223 pounds, this is a commercial-grade unit suited for high-demand installations.

This unit is designed for residential systems with high simultaneous hot water demand, including large single-family homes and light commercial buildings. It integrates into closed-loop hydronic systems and depends on a separately installed boiler to drive heat transfer through the internal exchanger. The aquaplus85 is rated to 150 psi working pressure, making it compatible with higher-pressure hydronic system configurations. It is available in a pewter finish and is sized at 60 inches tall by 26 inches wide, allowing placement in standard mechanical rooms with adequate clearance.

Key Features

• 82-gallon nominal storage capacity for high first-hour hot water delivery
• 300,000 BTU heat transfer rating supports rapid recovery in high-demand settings
• 316L stainless steel tank construction for corrosion resistance and long service life
• 304L stainless steel internal heat exchanger for efficient boiler-side heat transfer
• 150 psi pressure rating for compatibility with higher-pressure closed-loop hydronic systems
• 12-year tank warranty and 2-year parts warranty

Compatibility

Designed as an OEM-style indirect water heater for integration with closed-loop hydronic boiler systems in residential and light commercial applications.

Installation Notes

Installation must be performed by a licensed plumber or hydronic heating contractor in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off the boiler and isolate the hydronic loop before making any supply or return connections to the heat exchanger. Confirm that system pressure does not exceed the 150 psi rating of the tank before commissioning. A temperature and pressure relief valve must be installed per applicable code requirements.