Heating Weil-McLain Boilers | Ultra 155 – 123,000 Btu Output High Efficiency Boiler – Series 4 (Nat Gas Or Lp)

Propane Conversion Orifice Included For Lp Gas Applications

Key Features

• Gas Fired Water Boiler With Cast Aluminum Heat Exchanger
• Venturi Mixing Body Mixes Air And Gas Providing Higher Efficiency
• Designed To Operate In Low Temperature Condensing Applications
• Outdoor Reset And Domestic Hot Water Priority Standard
• Negative Regulated Gas Valve Precisely Delivers Gas To The Boiler
• Electronic Control Module Automatically Adjusts Blower Speed And Gas Flow Rate In Response To Environment
• Modulates With 5 To 1 Turndown Ratio
• Variable Speed Motor Matches Combustion Output To Heating Needs
• High Grade Stainless Steel Burner Features Quiet Operation, High Efficiency, And Cleaner Combustion For Low Nox Applications.

The Ultra Easy-Up Manifold Kit Can Speed Up Installation Of The Primary/Secondary Piping Required On Ultra Boilers. Weil-Mclain’S Easy-Up Manifold Kit Is Designed By The Boiler Manufacturer And Provides The Added Feature Of Optional Indirect Water Heater Connections.

Easy-Up Manifold Installation Options:

• 383-500-661 Ultra Easy-Up Manifold Kit For Ultra 155 (1-1/2″ Piping)