1. Daikin D2CND Boiler NOTES – Title Slide
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2. Key Product features Compact and light solution Low lift weight
from 27 kg
Available in 3 capacities 24, 28 & 35 kW
High modulation range 1:8
24kW kW
28kW kW
35kW kW
In-built weather compensation
(Optional outdoor sensor required)
Solar Preheat compatible
Optional Cloud Connectivity
Quick and easy to install
Stylish aesthetics inline with Daikin DNA

3. Daikin developed heat exchanger and condensate trap
Internal components
Daikin developed heat exchanger and condensate trap
Expansion Vessel
8 litre on 24kW
10 litre on 28 & 35kW
60/100 Flue Adapter
Flue gas test point built into adapter
Optimised Design Pins
Allows for lower fan usage and noise levels as the pressure of flue gases is reduced.
Aluminium Heat Exchanger
2 sizes – up to 24kW and up to 35kW
Asymmetric design
Reduces the depth of the boiler, as the fan is located in front of the HEX
Heat Exchanger design
Al-Si-Mg Alloy
Heat Exchanger
Daikin Design – High capacity to weight ratio ~7kg
Fan (EBM Papst)
Wider modulation range
Low noise (49dBA)
Gas Valve (Kromschröder)
Less maintenance, only requires annual service to ensure functional. LPG switchover in-built
Plate Heat Exchanger (SWEP)
Increased number of plates to provide faster hot water production at high efficiency
Condensate trap
Daikin design
Pump & Return Hydroblock (Grundfos)
Includes filter, flow restrictor, air-vent, PHE connection, drain tap & internal bypass

4. Daikin’s self developed burner
Primary heat exchanger
Daikin’s self developed burner
Aluminium-Silicon-Magnesium alloy body
Designed and tested to ensure high efficiency and long life
2 separate versions
Up to 24kW
28 & 35kW
Metal Fibre alloy burner
Allows boiler to run down to a minimum capacity of 3kW continuously
Kanthal A1 type wire electrode
Advanced alloy to withstand high temperature and corrosive environments

5. Pump group Grundfos UMP3 75
Automatic air-vent, flow limiter, flow sensor and 3-way valve
Operates on temperature difference
Ensures lower pump noise and lower electricity consumption
INCLUDED PUMPHEAD AND SPECIFIC
The pump and 3-way valve also operate every 24 hours to prevent seizing

6. SWEP designed heat exchanger
Plate heat exchanger
SWEP designed heat exchanger
Domestic hot water is heating via the plate heat exchanger
Counter flow, stainless steel plate
Brazed heat exchanger, ensuring high heat transfer efficiency with high corrosion resistance
2 different variants
24 kW = 20 plates
28/35 kW = 36 Plates

7. Kromschröeder – Type CES 10AF80-14LB3427
Gas Valve
Kromschröeder – Type CES 10AF80-14LB3427
In-built LPG switch over
Simple screw turn and field settings to adjust for LPG
Gas flow is adjusted via a current operated diaphragm valve
Part of the Lambda GX system
Same technology as SCOT (On GCU), but because of branding, Daikin will be calling it Lambda GX

8. Daikin’s self-developed component
Condensate trap
Daikin’s self-developed component
2 different sizes
Pre-mounted on 24kW
Supplied in the box on 28 & 35kW
Outlet must be at least 22mm plastic
Condensate flexi hose supplied with boiler

9. Communication gateway between Boiler and App
Optional LAN adapter
Communication gateway between Boiler and App
Optional PCB to allow app control
Same concept as the LAN adapter for Daikin Altherma
Enables app control via smart device
Wires internally inside the boiler, next to the main PCB

10. Perfect for a Kitchen Cupboard
Very compact only 0.06m³
400 mm
256 mm
590 mm
180 mm
24kW Combi
590 x 400 x 255
0.6 m³
10 mm
10 mm
440 mm
295 mm
695 mm
There a two different sizes, because of the burner.
Up to 24kW is 0.6m3 and 28 and 35kW is to 0.9m3
28 & 35kW Combi
695 x 440 x 295
0.9 m³
200 mm

11. Designed to match with the Daikin design outlook
External components
Designed to match with the Daikin design outlook
LED Display
DHW Adjustment Dial
CH Adjustment Dial
Setting buttons
Daikin Eye

12. Daikin Eye pulses during stand-by and lights up during Ignition
Normal operation
Daikin Eye pulses during stand-by and lights up during Ignition
Daikin Eye will be White on unit
Pulse during stand-by operation
Returns to pulse during stand-by
Lights up as boiler fires
Solid blue during running

13. Daikin Eye pulses red until user interaction occurs
Fault mode
Daikin Eye pulses red until user interaction occurs
Text will appear in white
Red pulse indicating error mode
User interaction to stop error mode

14. Some data is also shown on the underside of the boiler
Dataplate
Some data is also shown on the underside of the boiler

15. What’s in the box? Installation template Combi Boiler
Cable glands
Operation and installation manual
Combi Boiler
ErP label
Condensate hose
Screws and wall plugs
Wall-mounting bracket

16. Features and Benefits
Suitable for all installations, with Inbuilt LPG conversion kit
Boiler plus ready – Weather compensation as standard
Control from anywhere you are via the smart comfort controller
Flexible installation – up to 11m flue runs
Immediate operation mode & fault code
Quick installation with easy wiring connections
1:8 modulation range
(8 stage modulation)
Solar preheat compatible

17. D 2 C ND 024 A4 AA Product Range Nomenclature
Revision – A Series, A Update
Ext Filling loop & Optional Cloud Conn.
Capacity – 024/028/035
Model – ND
Type – Combi
Technology – 2: Gas Condensing
Brand – Daikin or Rotex

18. 3 Combi boiler capacities
Part numbers
3 Combi boiler capacities
Type
Product Name
Material Name
Output DHW
Output (80/60° C)
Nominal Output (50/30° C)
Flow rates at ΔT 35°C
Flow rates at ΔT 30°C
COMBI
WHGB 35C
D2CND035A4AA
D2CND035A4A
4,7 - 34,0 kW
4, ,6 kW
5,0 - 35,0 kW
13.7 l/min
16 l/min
WHGB 28C
D2CND028A4AA
D2CND028A4A
3,8 - 27,1 kW
3,6 - 26,0 kW
4,0 - 28,0 kW
12 l/min
14 l/min
WHGB 24C
D2CND024A4AA
D2CND024A4A
2,9 - 23,5 kW
2,8 - 22,8 kW
3,1 - 24,0 kW
10.3 l/min
SYSTEM
WHGB 35S
D2CND035A4AAS
N/A
WHGB 28S
D2CND028A4AAS
WHGB 24S
D2CND024A4AAS

19. Full range of flue options
Flues
Quick to install
Full range of flue options
Full range of 60/100
Maximum 60/100 horizontal flue length including 87° bend = 11m
Plume management kit (for 60/100 flue)
Horizontal flue terminal
Plume kit
To help the installer we will have a full range of 60/100 and 80/125 concentric flue options
We will also have a plume management kit specially for the UK market.
The maximum length for a 60/100 horizontal flue is 9m incl the 87 boiler elbow
Elbows
Vertical flue terminals
Roof tile terminals

20. Maximum Flue Runs Maximum flue length Horizontal (1) Vertical (2)
Flues
Maximum Flue Runs
Maximum flue length
Horizontal (1)
Vertical (2)
60/100
11.0 m
12.5 m
80/125
44.0 m
42.8 m
Reduction
90° Elbow
1.5 m
45° Elbow
1.0 m 1 2

21. Additional accessories
Part Numbers and Accessories
Additional accessories
Description
Part Number
List Price
Daikin OpenTherm room thermostat
DOTROOMTHEAA
£82.00
D2C boiler Smart Comfort Controller
DRGATEWAYAA
£77.00
Solar Temperature Sensor
DRSLRTESENSAA
TBC
Connector Elbow PP 60/100 + MP(0mm)
DRMEEA60100BA
£13.00
Vert. Conn. 60/100-80/125 + MP(0mm)
DRDECO80125BA
£14.00
Cover plate ( kW)
(ordered separately)
DRCOVERPLATAA
£28.00
Cover plate (28-35 kW)
DRCOVERPLA2AA
£37.00
Valve Kit C2
(Ordered separately)
DRVALVEKIC2AA
£48.00
Outdoor sensor – Weather comp
150042
£16.00
Horizontal flue terminal – 60/100
DRWTER60100AA
£42.00

22. Boiler Wiring

23. Safety logic to protect against freezing
Frost Protection Logic
Safety logic to protect against freezing
Controlled by the flow temperature sensor
Located at the heat exchanger outlet
Runs pump and burner when the water temperature drops below 8C
Keeps running until water temperature reaches 30C
To enable this function, the boiler must be connected to a power supply
Any damage caused by frost is not covered by warranty.
Water Temperature °C CH
100°
80°
60°
40°
Pump ON
Burner ON
30°
20°
13° 8° 0°
ERROR
-20°

24. Combination Table DRCOVERPLAT(2)AA DOTROOMTHEAA DRWTER60100AA
D2CND-A4A
DRVALVEKIC2AA
DRCOVERPLAT(2)AA
DOTROOMTHEAA
DRGATEWAYAA
DRWTER60100AA
EKFGP6837
DRDECO80125BA
Standard Boiler ü
Daikin Room Thermostat
Daikin Smart Comfort Controller
Horizontal Flue
Vertical Flue
80/125 Flue

25. Available as Combi and System boilers
Boiler Prices
Available as Combi and System boilers
UK.24COMBI
24kW WHGB Combi Pack
£530.00
D2CND024A4A
24kW Wall Hung Boiler
£454.00
DRCOVERPLATAA
Optional pipe cover plate for 24kW models
£28.00
DRVALVEKIC2AA
Daikin D2CND valve kit
£48.00
UK.28COMBI
28kW WHGB Combi Pack
£609.00
D2CND028A4A
28kW Wall Hung Boiler
£524.00
DRCOVERPLA2AA
Optional pipe cover plate for 28 & 35kW models
£37.00
UK.35COMBI
35kW WHGB Combi Pack
£679.00
D2CND035A4A
35kW Wall Hung Boiler
£594.00
UK.24SYSTEM
24kW WHGB System Pack
UK.SBOILERPACK
System Boiler Sticker Pack
£1.50
UK.28SYSTEM
28kW WHGB System Pack
UK.35SYSTEM
35kW WHGB System Pack

26. Available for both Installers and Homeowners
Boiler hotline
Available for both Installers and Homeowners
Installer
Homeowner
Technical help and homeowner hotline for any and all heating enquiries