Daikin D2CND035A1A Gas Condensing Boiler 35 kW Compact Altherma D2C – Heating and Domestic Hot Water, Class A with Flue Kit

Daikin D2CND035A1A Gas Condensing Boiler 35 kW Compact Altherma 3 D2C Combi WiFi for Heating and Domestic Hot Water, Class A, with Horizontal Coaxial Flue Kit DN60/100 (60 mm × 100 mm)

The Daikin D2CND gas condensing boilers represent the ideal solution for those looking to replace an existing boiler with a more efficient alternative — saving on energy costs while ensuring reliable performance in heating and domestic hot water production.

Elegant, Compact and Quiet

Modern and refined design – 100% Daikin

• Ultra-compact dimensions

• Lightweight structure

• Maximum installation flexibility

High Efficiency

• Outstanding heating efficiency: up to 109%

• ECO Mode to minimize consumption

• Wide modulation ratio up to 1:8

Advanced Technology

• Patented Daikin ultra-compact water/flue heat exchanger

• Warm Start function: instant domestic hot water availability

• Clean combustion through Lambda Gx sensor control

• Smartphone or tablet control via dedicated App

Compact Design, Maximum Performance

The new Daikin D2C condensing boilers feature 100% in-house design and engineering. Their ultra-compact size makes them ideal for small apartments, where every centimeter of saved space matters.

A Boiler for Every Need

The D2C range is available in three combi versions (24 kW, 28 kW and 35 kW) for heating and instant domestic hot water production.

A wide range of heating-only models (D2T) is also available in five sizes, from 12 to 35 kW, which can be paired with an external storage tank for domestic hot water.

Thanks to its compact dimensions, minimal installation space, IPX5D electrical protection rating, and anti-freeze kit, the boiler can be installed indoors or outdoors.

Do you want to keep your heating system under control even when you’re not at home? Enjoy smart WiFi control through the Daikin Onecta app, Google Assistant, and Amazon Alexa.

Efficiency and Environmental Care

The Lambda Gx sensor combustion system automatically adapts to the type and quality of the gas used (natural gas or LPG), ensuring clean combustion and minimal pollutant emissions.

The premix condensing technology integrates a modulating fan that perfectly mixes air and gas before the burner, guaranteeing highly efficient combustion.
By recovering the latent heat in the exhaust gases, this technology extracts up to 107% more usable energy, helping reduce consumption and emissions.

Maximum Comfort

With a high modulation ratio (up to 1:8), the boiler automatically adjusts output power to match the real-time heating demand of the home.

Need long, uninterrupted showers?
With the 35 kW version, the D2C delivers up to 19 liters per minute of hot water — so comfort is never compromised.

Functions and Features

• Eco Mode: Return temperature control for optimal condensation.

• Warm Start: The domestic hot water exchanger is preheated and ready to use thanks to intelligent memory that anticipates usage patterns.

• Solar connection: When incoming water is preheated by a solar system, the burner remains off for optimal renewable integration.

Daikin Eye

An elegant LED “eye” provides visual feedback on the system status. A multicolor indicator changes color according to operation — and turns red to signal an error, displaying the corresponding fault code.
The simplest way to interact with your boiler!

Remote control via the Onecta app, Google Assistant, and Amazon Alexa

To manage your boiler remotely, simply download the Daikin Onecta app on your smartphone or tablet. With the Daikin Onecta application, you can easily control and monitor your boiler directly from your phone in a simple and intuitive way. Manage heating and hot water production wherever you are. Create operating schedules, monitor energy consumption, and much more.

Technical Specifications

Heating

Efficiency class (55°C): A
Boiler power Qn (LHV) Nom. Min/Max kW: 4.8 / 34
Delivered power Pn at 80/60°C Min/Nom. kW: 4.6 / 33.2
Delivered power Pnc at 50/30°C Min/Nom. kW: 5.2 / 35
Water pressure (PMS) Max bar: 3
Water temperature Max °C: 100
Efficiency at 30% load %: 108.7
Modulation range: 1:7
Expansion vessel volume l: 10
Operating range Min/Max °C: 30 / 80
Efficiency at nominal power 80/60°C %: 97.6
Seasonal space heating energy efficiency ηs %: 93

Domestic Hot Water

Type of hot water production: Instantaneous
Boiler power Qn (LHV) Nom. Min/Max kW: 4.8 / 34
Hot water threshold l/min: 2
Factory set temperature °C: 50
Operating range Min/Max °C: 35 / 60
Continuous flow (ΔT=30°C) l/min: 16
Continuous flow (ΔT=25°C) l/min: 19.2
Pipe connections mm: 19 (3/4") Male
Flow and return connections mm: 12.7 (1/2") Male

Gas

Gas connection diameter mm: 19 (3/4") Male
Consumption (G20) Min/Max m³/h: 0.511 / 3.63
Consumption (G25) Min/Max m³/h: 0.59 / 4.19
Consumption (G31) Min/Max m³/h: 0.2 / 1.38

Air Intake

Connection mm: 100
Concentric: Yes
Exhaust gas connection mm: 60

Space Heating

General ηs (Seasonal efficiency for space heating) %: 93
Seasonal heating class: A

Domestic Hot Water Heating

Declared load profile: XL
ηwh (Water heating efficiency) %: 83
Water heating energy class: A

Casing

Color: Titanium White (RAL9003)
Material: Galvanized steel sheet with powder coating
Unit dimensions (H×W×D) mm: 690 × 440 × 295
Empty weight kg: 37
Sound power level dB: 52
Power supply Phase/Frequency/Voltage Hz/V: 1~/50/230

Electrical Absorption

Max W: 112
Standby W: 2.7

Installation Type

C13(x), C33(x), C43(x), C53(x), C63(x), C83(x), C93(x), B23, B23P, B53, B53P
Flue diameter mm: 60/100
NOx class: 6
Max flue length DN 60/100 m: 20.7
Max flue length DN 80/125 m: 99
Max flue length DN 80/80 m: 54