MVB® Modulating Vertical Hydronic Boilers 87%

Features:

• 87% Thermal efficiency; Cat IV venting required.
• Cast-iron headers with copper finned tube heat exchanger standard.  Brass headers and cupro-nickel tubes available as options. ASME Section IV constructed and stamped, National Board Registered. AB 1953 compliant.
• No boiler condensate drain required (proprietary design).
• Minimum required inlet water temperature 120F.
• Modulating gas valve and burner, up to 7:1 turndown.
• Engineered with precisely matched system components.
• Smallest installed footprint (5.4 square feet) design fits tight spaces and easily replaces larger boilers.
• All models indoor/outdoor certified.
• Complete cabinet protects all controls and wiring.
• Certified under SCAQMD Rule 1146.2. Meets all Low NOx regulations.
• Suitable for altitudes up to 10,000 ft. (derate above 5,000 ft.).
• Inline combustion air filter (MERV8).
• Available for natural gas or propane.
• Multiple pump outputs – Boiler Pump, System Pump, Indirect Pump.
• Whisper quiet operation.
• VERSA IC® control package with built-in outdoor reset function.
• On-board disgnostic center, English, no codes.
• 0-10 VDC BMS Interface (setpoint or direct drive).
• Built-in cascade function for up to 4 boilers.
• Modbus® RTU port (RS485).

Options:

• Outdoor air sensor (B-32).
• Indirect sensor.
• Condensate neutralizer (Z-12).