Description

De Dietrich Vivadens MCR 24/35 BIC Condensing Boiler with Integrated 45L Storage

The De Dietrich Vivadens MCR 24/35 BIC is a premium, high-performance wall-hung condensing gas boiler designed for homes with high domestic hot water (DHW) demands. Unlike standard combi boilers, the BIC model features an integrated 45-liter stainless steel storage tank, ensuring an abundant, immediate, and highly stable supply of hot water for multiple bathrooms simultaneously. Delivering a rated heating capacity of 24 kW and massive DHW performance, this unit perfectly balances heavy-duty output with modern energy efficiency.

Key Technical Specifications

Technical Parameter	Specification / Value
Generator Type	Heating and DHW with built-in 45 L tank
Nominal Heat Output ( $P_{rated}$ )	24 kW
Useful Output at High Temp (80/60 °C)	3.4 – 24.0 kW
Useful Output at Low Temp (50/30 °C)	3.7 – 26.1 kW
Useful Efficiency at 30% Partial Load ( $\eta_1$ )	99.0%
Seasonal Space Heating Efficiency ( $\eta_s$ )	94%
DHW Energy Efficiency ( $\eta_{wh}$ )	84% (Declared Load Profile: XL)
Modulation Range	10% to 100%
Nitrogen Oxide ( $NO_x$ ) Emissions	21 mg/kWh
Natural Gas G20 Consumption (min / max)	0.37 / 3.69 m³/h
Sound Power Level (Indoor $L_{WA}$ )	50 dB(A)
Expansion Vessel Capacity	10 Liters
Net Weight (empty)	58.0 kg
Net Weight (filled with water)	100.0 kg

Key Features & Benefits

Ultimate Domestic Hot Water (DHW) Performance

Built-in Storage Cylinder: Equipped with a 45 L stainless steel tank and a scale-resistant heating coil for maximum durability in hard-water areas.
High DHW Flow Rate: Provides an exceptional accumulation flow rate of 19.2 l/min, guaranteeing stable temperatures even when multiple taps are opened at the same time.

E-PILOT Smart Control System

Intuitive Operation: Control system with clear text and simplified access to all operating modes.
System Monitoring: Features a permanent water pressure indicator directly on the display and integrated energy metering to track consumption.
Smart Connectivity: Supports remote control via smart room temperature sensors. When using cloud-connected thermostats, there is no need to install an outside sensor option.

Heavy-Duty Robust Construction

Premium Exchanger: Built around a robust monocoil stainless steel coiled heat exchanger.
High-Quality Hydraulics: Features a brass hydraulic hydroblock across the entire range and durable copper tubes.

Next-Generation Boiler Technology

Maximized Efficiency: Automatic combustion control with an ultra-wide output modulation from 10% to 100%.
Eco-Ready & Future-Proof: Fully suitable for G20 gas containing up to 20% Hydrogen (H2).
Refined Design: Ensures silent operation with advanced soundproofing, a central flue gas outlet, and a built-in exhaust gas non-return valve.

Frequently Asked Questions (FAQ)

Q: Why choose the 24/35 BIC model over the instant (MI) version?

A: The BIC model includes a 45-liter stainless steel tank, providing a buffer of pre-heated water. This makes it ideal for larger homes with multiple bathrooms where hot water is often drawn from several taps simultaneously, ensuring no pressure drops or temperature fluctuations.

Q: Can this boiler handle hard water environments?

A: Yes. The 45 L stainless steel tank features a scale-resistant heating coil designed specifically to mitigate limescale build-up and maintain high efficiency over time.