D2HND012 - Uncategorized DAIKIN - Free user manual and instructions

USER MANUAL D2HND012 DAIKIN

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05 Table of contents 1 Introduction 3

4.8.3 Guidelines when connecting the water piping............. 12

4.8.9 Guidelines when connecting the boiler to the flue gas

4.10 Converting for use with a different type of gas .......................... 23

4.10.1 To convert the system for use with a different type of

5.4.2 To commission the central heating capacity setting ... 25

5.4.3 To commission the domestic hot water....................... 25

6 Hand-over to the user 25 Disposal Old units must be appropriately disposed of, in accordance with local and national regulations. The components are easy to separate and the plastics are marked. This allows the various components to be sorted for appropriate recycling or disposal.

• Units are marked with the following symbol: This means that electrical and electronic products may NOT be mixed with unsorted household waste. Do NOT try to dismantle the system yourself: the dismantling of the system, treatment of the refrigerant, of oil and of other parts must be done by an authorized installer and must comply with applicable legislation. Units must be treated at a specialized treatment facility for reuse, recycling and recovery. By ensuring this product is disposed of correctly, you will help to prevent potential negative consequences for the environment and human health. For more information, contact your installer or local authority. 1 Introduction

1.1 About the documentation

The instructions contained in this document are intended to guide you through the installation of the unit. Damage caused by non- observance of these instructions are not under the responsibility of Daikin.

• The original documentation is written in English. All other languages are translations.

• The precautions described in this document are written for installers and they cover very important topics. Follow them carefully.

• Please read the operation manual and installation manual prior to use and keep them for future reference.

1.1.1 Meaning of warnings and symbols

DANGER Indicates a situation that results in death or serious injury. WARNING Indicates a situation that could result in death or serious injury. CAUTION Indicates a situation that could result in minor or moderate injury. NOTICE Indicates a situation that could result in equipment or property damage. INFORMATION Indicates useful tips or additional information.2 Safety instructions Installation manual

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05

1.2 Identification label

You can find data about the unit on its identification label, which is located at the bottom of the right cover of the unit. Pn (80/60)Pn (50/30)

a Product number b Electrical supply c Maximum electrical power consumption d Degree of protection e Nominal heat output range @ 80/60 f Nominal heat output range @ 50/30 g Nominal heat input range h Nominal heat input range (Domestic hot water) i Hot water amount @ DT=30 j NOx class k Maximum central heating pressure (bar) l Maximum central heating pressure (MPa) m Maximum domestic hot water pressure (bar) n Maximum domestic hot water pressure (MPa) o Country of destination(s) p Country of origin q Serial number r Appliance type s Efficiency class t Gas category u Gas type and supply pressure v PIN number w Product type

1.3 Symbols on the package

This is a fragile piece of equipment: Please provide a dry storage space for the unit. This is a fragile piece of equipment: Please be very careful not to drop. Store the unit in a flat position as indicated on the box. No more than five boxes should be stacked on top of each other. 2 Safety instructions These instructions are exclusively designed for qualified competent persons.

• Work on gas units must only be carried out by a qualified gas fitter.

• Work on electrical equipment must only be carried out by a qualified electrician.

• The system must be commissioned by a qualified competent person. WARNING A qualified person shall explain the operating principles and the use of the unit to the user. The user is not allowed to perform any modifications, maintenance or repairs on the unit, unless otherwise stated, or have the such performed by unauthorised third parties. Otherwise, the unit warranty becomes void. DANGER Isolate the boiler from the power mains before working on it. WARNING Unit installation, commissioning, repair, configuration and service must be performed by qualified competent persons in accordance with local standards and regulations. Incorrect installation of this unit may harm the user and his/ her surroundings. The manufacturer is not responsible for any malfunctions and/or damage that may occur this way. DANGER Flammable fluids and materials must be stored at least 1metre away from the boiler. WARNING To ensure faultless operation, long term availability of all functions and long working life of the boiler only use original spares. 3 About the unit This Daikin unit is a wall-mounted gas-fired condensing boiler that can supply heat to central heating systems, as well as supply domestic hot water. Depending on settings, it is possible to use the unit solely for hot water or solely for central heating. Hot water supply type can be instantaneous or by means of a hot water storage tank. Heating only boilers do not supply domestic hot water. The type of the boiler can be recognized from the model name written on the identification label. See table below: Model Type Domestic hot water supply D2C20ND028A5AA D2C20ND028 Instantaneous D2C24ND035A5AA D2C24ND035 Instantaneous A control unit, which contains a user interface, controls the ignition, safety systems, and other actuators. User interaction is provided via that user interface, which is composed of an LCD screen, push buttons, and two dials, and which is located on the front cover of the unit.3 About the unit Installation manual

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05

The unit is equipped with several safety systems, to protect it against dangerous conditions: Flue safety system: This is controlled by the flue gas temperature sensor located on the flue outlet part of the boiler. It is activated when the flue gas temperature exceeds safety limits. Overheating safety system: This is controlled by the safety limiting thermostat. It is located on the main heat exchanger and stops the unit when the flow temperature reaches 100°C, to avoid boiling of the water, which may damage the unit. Pump anti-blockage system: The pump operates for 30 seconds every 24hours during long periods of inactivity to ensure it does not get stuck. To enable this function, the unit must be connected to the power supply. Three-way valve anti-blockage system: In cases where the unit is non-operational for prolonged periods of time, the three-way valve switches its position every 24hours to prevent it from getting stuck. To enable this function, the unit must be connected to the power supply. Safety against dry operation: This is controlled by the pressure sensor. It turns off the unit and ensures system safety when the water pressure of the heating installation falls below 0.6bar for any reason. Flame ionisation control: This is controlled by the ionisation electrode. It checks whether a flame forms on the burner surface or not. If there is no flame, it turns the unit off to stop gas flow and warns the user. High pressure protection:

• Pressure sensor: When heating system pressure reaches

2.8 bar, control unit stops heating operation thus preventing the

pressure from rising.

• Safety valve: When the water pressure of the heating circuit exceeds 3 bar, some water is automatically drained from the safety valve to keep the pressure below 3bar thus protecting the boiler and heating installation. Automatic air vents: There are two air vents; one on the pump, other on the heat exchanger. They help discharging the air inside the installation and heating circuit to avoid air traps and consequent operational problems. Frost protection safety system: This function protects the unit and heating installation from frost damages. It is controlled by the flow temperature sensor, which is located at the outlet of the main heat exchanger. This protection activates the boiler pump when the water temperature drops below 13°C and it activates the burner when the water temperature drops below 8°C. The unit keeps running until the temperature reaches 20°C. To enable this function, the unit must be connected to the power supply and its main gas valve must be open. Any damage caused by frost is not covered by the warranty. Low voltage safety system: This is controlled by the control unit. When the supply voltage drops below 170 Volt, the boiler goes to error mode. It is a blocking error and the boiler will operate without reset after supply voltage is above 180 Volt. It is recommended to use a voltage regulator of suitable power and type in locations with voltage fluctuations below this limit for faultless operation. High electric supply current protection system: A fuse on the control unit protects equipment and wiring against the damaging effects of electrical faults which is caused by excess currents, and disables equipment which is faulty. The fuse "blows" (opens) when the current carried exceeds the rated value for an excessive time. Automatic by-pass system: This ensures that the flow is at all times continued, to avoid overheating of the heat exchanger. This system is also supported with a special by-pass function in the control unit software. Combustion control safety system: Boiler control unit monitors the flame to avoid bad combustion and risky conditions. It also makes self-inspection against its own malfunctioning and to keep emissions always at a low level.

Top view Front view and right side view

Bottom view of model D2C20ND028A5AA and D2C24ND035A5AA

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05

Components of models D2C20ND028A5AA and D2C24ND035A5AA

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05

Emission at nominal and minimum heat input (G31) % 11.3 / 10.2±1.0 NOx Class — 6 (a) 20 / 30 for Hungary Energy-related products (ErP) specifications Symbol Unit D2C20ND028A5AA D2C24ND035A5AA Model — — D2C20ND028 D2C24ND035 Condensing boiler — — YES YES Low-temperature (b) boiler — — NO NO B1 boiler — — NO NO Cogeneration space heater — — NO NO Combination heater — — YES YES Central heating efficiency class — — ****/A Rated heat output P rated kW 19 23 Useful heat output at rated heat output and high-temperature regime (a)

kW 18.8 22.9 Useful heat output at 30% of rated heat output and low-temperature regime (b)

kW 6.3 7.7 Seasonal space heating energy efficiency η

% 93 Useful efficiency at rated heat output and high-temperature regime (a)

% 88.1 87.9 Useful efficiency at 30% of rated heat output and low-temperature regime (b)

kW 0.004 Other items Standby heat loss P stby kW 0.0651 Ignition burner power consumption P ign kW — Annual energy consumption Q

dB 50 53 Emissions of nitrogen oxides NO

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05 Energy-related products (ErP) specifications Symbol Unit D2C20ND028A5AA D2C24ND035A5AADomestic hot water parametersDeclared load profile — — XLDaily electricity consumption Q elec kWh 0.153 0.204Annually electricity consumption AEC kWh 33 44Water heating energy efficiency η % 84 83Water heating energy efficiency class — — ADaily fuel consumption Q fuel kWh 23.25 30.26Annual fuel consumption AFC GJ 18 23 (a) High-temperature regime means 60°C return temperature at heater inlet and 80°C flow temperature at heater outlet. (b) Low temperature means for condensing boilers 30°C, for low-temperature boilers 37°C and for other heaters 50°C return temperature (at heater inlet). 4 Installation

4.1 To open the unit

WARNING Only qualified competent persons are allowed to open the unit. Certain actions explained in this document, such as gas conversion, optional equipment connection, require that the front cover is opened. 1 Loosen the screw that holds the right mounting clips (1). 2 Dismantle the two mounting clips that hold the front cover (2). 3 Remove the front cover forwards (3).

a Front cover 4 Loosen the two screws of the control panel (4).

a Control panel 5 Pull the control panel forwards (5). 54 Installation Installation manual

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05

4.2 Installation site requirements

WARNING The boiler must be installed by a qualified installer in accordance with local and national regulations. WARNING The following instructions shall be observed when determining the installation site.

• Mount this unit on vertical, flat walls only.

a Vertical, flat wall

• The boiler can be installed outdoors in a partially protected location. A partially protected location is a place where the boiler is not exposed to the direct action and to the penetration of atmospheric precipitation (rain, snow, hail,...). The boiler can also be installed inside of an outside wall using the appropriate in‑wall kit. In case of outdoor installation, use the antifreeze kit (DRANTIFREEZxx ) to prevent the piping and condensate trap from freezing.

• Flammable fluids and materials must be stored at least 1 metre away from the boiler.

• The wall on which the unit is mounted should be strong enough to carry the unit's weight. Build a reinforcement if necessary.

• The following minimum clearances are required for servicing: 180mm above the casing*, 200mm below, and 10mm at each side. 500mm at the front clearance may be realised by opening a cupboard door. See "Minimum installation clearances" on page9.

• For easier use of control panel, it is recommended that boiler bottom is 1500mm from the floor, for easier part replacement side clearances should be 50 mm where applicable. See "Minimum installation clearances"on page9.

• If the boiler is installed in a room or compartment, it does not require a dedicated ventilation for combustion air. If however installed in a room containing a bath or a shower, then particular reference is drawn to the current I.E.E. Wiring Regulations, local Building Regulations or any other local regulations currently in service.

• The intake air must not include chemicals that may cause corrosion, toxic gas formation and even risk of explosion.

• If the wall on which the unit is mounted, is flammable, a non- flammable material must be placed between the wall and the unit and also at all locations through where the flue piping passes. Minimum installation clearances a a

Minimum allowable clearances a, sides 10mm b, Above the casing* 180mm c, below 255mm f, in front 500mm Recommended clearances for easy servicing d, sides 50mm e, below (from the floor) 1500mm

• 180mm is for the case that 60/100 90° elbow is connected to the flue outlet of the boiler. b = 270mm in case that 60/100 to 80/80 adapter + 90° elbow 80 are connected to the flue outlet of the boiler. b = 280mm in case that 60/100 to 80/125 adapter + 90° elbow 80/125 are connected to the flue outlet of the boiler.

4.3 To unpack the unit

1 Unpack the unit as shown on top of the packing case. The following items must be included in the package: a b c d e f g h i

a Boiler b Operation manual c Installation manual d Wall-mounting bracket e Installation template f Dowels and screws g Condensate hose h Cable glands 2×PG7, 1×PG9 i Energy label j Condensate trap 2 Check the contents of the package. If any of them is damaged or missing, contact your dealer. CAUTION Store the remaining parts of the package (cardboard, plastic, etc.) in a place children cannot reach. The manufacturer is not responsible for any accidents and/or damage that may occur this way.4 Installation Installation manual

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05

4.4 To mount the unit

1 The mounting template shows the position for the horizontal flue. If there is no hole in the wall for the flue piping, drill one. If there is already a hole in the wall for the flue piping, you can use this hole as a starting point to determine the position of the mounting bracket, according to the template. Flue duct must incline 3° away from the unit, to allow the condensate to drain back to the boiler.

DN100 >3° >3° 2 Drill holes for the mounting bracket (Ø10 mm). Fasten the mounting bracket to the wall according to mounting template. d=10 mm 3 Hang the unit on the bracket. Make sure the unit is latched to the bracket.

4.5 Central heating system

requirements Expansion vessel sizing The boiler is equipped with an 10 litre expansion vessel that has initial charge pressure of 1bar. Sufficiency of the incorporated expansion vessel for the central heating circuit that the boiler is to be connected to depends on system charge pressure and water temperature circulating in the circuit. Determination of system water height and related system charge pressure are given below: h p ≤6 m 0.8 bar 7 m 0.9 bar 8 m 1.0 bar 9 m 1.1 bar 10 m 1.2 bar 11 m 1.3 bar 12 m 1.4 bar 13 m 1.5 bar

h System water height (m) p System charge pressure (bar) According to the graph below, there is no need to install an additional expansion vessel for the systems with a water volume in the area below the operating temperature curve. If water volume is above the curve, additional vessel must be installed, preferably on the return to the boiler.

• 50°C-40°C temperature regime is given for underfloor heating systems Water treatment Inappropriate central heating circuit water reduces functionality and efficiency of the boiler over time. Appropriate water should have:

• pH degree between 6.5 and 8.5

• Hardness less than 15°fH and 8.4°dH Appropriate additives can be used for water treatment. If antifreeze is needed for the system, the chosen antifreeze should not interact with rubber, commercial plastic and metal parts of the boiler that are in contact with the central heating water. For use of any additive in the central heating system, please refer to the instructions of their manufacturers to ensure above functionality and compatibility. WARNING Mixing inappropriate additives with the central heating circuit water can result in efficiency loss in the boiler or damage to the boiler and the other central heating circuit elements. Daikin accepts no liability for any such damage or ineffectiveness caused by using inappropriate additive.4 Installation Installation manual

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05

4.6 Underfloor heating requirements

Underfloor heating systems apparently require higher flow rate and lower ΔT. This boiler can be connected to an underfloor heating system without use of a second pump and low loss header because of its high pump capacity. Direct connection is possible when the system is well designed and pressure loss is low enough. When the boiler is connected to underfloor heating installation, the maximum central heating set temperature must be limited to 50°C and the pump operation temperature difference must be adjusted to 10Kelvin in the service settings menu. To change this setting, refer to the servicing instructions. WARNING Make sure parameter changes explained above are done to avoid discomfort of the user.

4.7 Residual pump lift graph

The residual pump lift graph shows the amount of pump lift (mbar) that remains for the central heating circuit.

NOTICE During installation, do not loosen or remove any screw from bottom plate.

4.8.1 Piping connections

Piping connections of model D2C20ND028A5AA and D2C24ND035A5AA Below, find the piping connections of the unit. ABDEG CF A Central heating return connection, 3/4" B Domestic cold water inlet connection, 1/2" C Condensate trap discharge D Domestic hot water outlet connection, 1/2" E Central heating supply connection, 3/4" F Gas inlet connection, 3/4" G Safety valve discharge

Valve Strainer Tee connection Double check valve + filling hose Disconnector a Isolation valve on domestic hot water supply pipe is tentative. b External filling group used with model D2C20ND028A5AA andD2C24ND035A5AA. Use a disconnector or a double check valve according to local regulations. Isolation valves and strainers should be used just before the appliance piping inlet as shown in figure above. Ensure that necessary gaskets are placed. Note: Optional Daikin connection kit can be used and it is recommended to use it.4 Installation Installation manual

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05

4.8.2 Guidelines when connecting the gas

piping This unit is designed to be operated with natural gas or LPG. The preset gas type and the designated gas inlet pressure are indicated on the boiler's identification label. WARNING Only qualified persons are allowed to connect the gas piping. The gas inlet pipe diameter must be selected according to the applicable legislation, standards, and regulations. Connect the gas piping according to applicable legislation of the country of destination and the regulations of the gas supply company. Connect the gas supply piping without tension to the gas pipe connection ("Connection F", see "4.8.1 Piping connections" on page11). WARNING After the gas connection is made, the gas line must be tested for leakage while the gas line to the boiler is open (see "5.3To check for gas leakage"on page24). In case gas piping is adjacent to the wall and is to be connected to the gas pipe connection of the boiler with an elbow, enough space for taking out the condensate trap must be left. This can be done in two ways: 1 Elbow must be placed crosswise so it will not block the condensate trap when it is being taken out. 2 Elbow must be placed 200mm below the gas piping connection of the boiler.

4.8.3 Guidelines when connecting the water

piping When connecting the piping to the boiler, observe the following instructions: WARNING Ignoring the rules explained below may result in serious damages in installation or boiler or cause discomfort of the user. The manufacturer is not responsible for any damage that may occur this way.

• The installation of the boiler should be in compliance with the applicable legislation, standards, and regulations.

• The materials used in the installation must be in compliance with the applicable legislation, standards, and regulations.

• Heating installation piping material must not allow oxygen diffusion according to DIN4726.

• The central heating/domestic hot water installation should be flushed and visually inspected. Wastes, dust, rubbers, and metal pieces generated during the installation and mounting of the boiler must be removed in order not to cause any damage.

• The central heating circuit must be able to withstand a pressure of at least 6bar.

• Cross connection must be preferred in the radiators longer than 1.5metres.

• The safety valve piping should be connected to a water outlet with an additional hose or piping. This outlet should not be installed in places where there is risk of freezing, nor in the rain gutter, it should not end to dry floor without available drainage to avoid damaging of floor coating like parquet.

• The maximum pressure in the domestic hot water circuit is 10bar. Inspect the piping taking this in to consideration. If the water pressure of the main water supply is excessive, use an appropriate pressure reducer. Installation must comply with EN15502-2-2.

• As the condensing boilers generate condensate, the condensate trap outlet should be connected to an open drain. Piping and elements of the drain line must be made of acid-resistant material like plastics. Metals like steel or copper are not allowed.

• The system must be air-free to protect the boiler. There are two automatic air vents on the boiler, one at heat exchanger, the other on the pump. Ensure air is discharged completely at each water filling. Bleed the radiators if necessary.

• If the boiler will be connected to an old central heating/domestic hot water installation, then first visually inspect the old installation. The installation must be in compliance with the capacity of the boiler and must not prevent the efficient running of it. Dirt in old system and piping must be flushed, and filters must be inspected.

• If old piping material does not have oxygen barrier, then it must be separated from the boiler circuit via a plate heat exchanger and a second pump has to be installed for necessary circulation.

• If the pressure reading on the boiler user interface is dropping repeatedly, most probably there is a leakage in the installation. Inspect the installation to repair.

• In case of solar preheating of the domestic hot water from a solar tank, install the thermostatic mixing valve at the domestic hot water outlet and inlet.

4.8.4 Guidelines when connecting the electrical

wiring DANGER Before working on the electrical circuit always isolate the unit from the power mains. WARNING Only qualified persons are allowed to make electrical connections on the unit. Failure to observe this warning will void the warranty. The manufacturer is not responsible for any damage that may occur this way. WARNING Use a dedicated power circuit. Never use a power supply cable shared by another unit. The unit runs on 230VAC 50Hz power. A power cable is delivered with the package. The power cable must be connected to the power supply by an electrician and in accordance with the applicable legislation.4 Installation Installation manual D2C20ND028A5AA + D2C24ND035A5AAWall-mounted condensing boiler3P469346-10J – 2018.05 a b 3×0.75 TTR / 230 VH05RN1~ 230 V50 Hz Cat. III a Safety breaker (2A)b Earth leakage safety breakerCat. III Overvoltage category III

• Electrical work should be carried out in accordance with the installation manual and the national electrical wiring rules or code of practice.

• Insufficient capacity or incomplete electrical work may cause electrical shock or fire.

• A main switch or other means for disconnection, having a contact separation in all poles providing full disconnection under overvoltage category III, shall be installed in the fixed wiring.

• Be sure to establish an earth. Do not earth the unit to a utility pipe, lightning arrester, or telephone earth. Incomplete earth may cause electrical shock and fire.

• While the electrical connections are being done, energy should not be on the main power supply cable and the main switch should be closed.

• During the electrical connections, make sure that the cables are well-fixed and are connected firmly and tightly.

• Power supply cable must be equivalent to H05RN-F (2451EC57) as minimum requirement. Observe the point mentioned below when wiring to the power supply terminal board.

a<b WARNING Do not interchange the supply conductors L and the neutral conductor N. DANGER Do not use gas and water pipes for earthing purposes and ensure that they have not been used for this purpose before. Failure to observe this relieves the manufacturer of any responsibility.

4.8.5 Guidelines when connecting options to

the boiler DANGER X2M connector has 230VAC. Optional equipment is connected to the connectors, which are located on the outside of the switch box. Do not open the switch box to connect optional equipment. Temperature control units Connector Connection Solar NTC sensor X1M 1-2 Daikin room thermostat X1M 3-4 Outdoor sensor X1M 5-6 Domestic hot water storage tank sensor X1M 7-8 Temperature control units Connector Connection External power output (230VAC) X2M 3-4 On-Off room thermostat X2M 5-6 (1-2)(3-4)(5-6)(7-8)

X2M Wiring of the options that are to be connected to the X2M connector must pop out from the inside of the unit via cable glands. Cable glands that are sent with the unit must be assembled to the bottom sheet of the boiler in case connection of these options. Below, you can see the cable glands placement. PG9 PG7 PG7 PG9 Holes on the bottom sheet that are reserved for cable glands are covered with insulation material. The insulation material must be bored if glands are to be used. Note: Unit must be opened to mount cable glands. See "4.1To open the unit"on page8 to reach the inside of the boiler.4 Installation Installation manual

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05

Disconnect the power supply for more than 10 minutes before servicing Models D2C20ND028A5AA and D2C24ND035A5AA4 Installation Installation manual

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05 Symbols: Item Description Option Wiring depending on model Switch box PCB X4M Main terminal Earth wiring

Wire number 15 Field supply

4.8.7 Guidelines when connecting the

condensate piping DANGER In order to prevent escape of flue gases and so poisoning, the condensate trap must be mounted to its place before commissioning. Condensate trap must be connected to a drain via an open connection. Precautions that should be taken about condensate piping are:

• Horizontal pipe runs must fall a minimum of 45mm/metre.

• External piping should be kept as short as possible or thermally insulated to prevent freezing, depending on the installation winter climate condition.

• Make sure that the condensate disposal system, the piping, and the fittings are made of acid resistant material like plastics. WARNING The condensate trap outlet shall not be modified or blocked. CAUTION The condensate discharge piping diameter must be large enough so as not to restrain the condensate water flow. WARNING If the discharge pipe is located outdoors, take measures against frost.4 Installation Installation manual

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05

4.8.8 Guidelines for condensate piping

termination Condensate piping can be connected to a termination in different ways shown below: Terminating into an internal soil and vent stack

≥450 mm a Air breaker b Internal soil and vent stack Terminating into an external waste system

a Open end direct into gully, below ground but above water level Terminating into an external purpose made soakaway

a Open end direct into gully, below ground but above water level b Sink, basin, bath or shower NOTICE Use of a condensate drain pump is necessary where termination of condensate line is below a soakaway.

4.8.9 Guidelines when connecting the boiler to

the flue gas system DANGER Risk of poisoning due to flue gas escaping within enclosed rooms that are inadequately ventilated. CAUTION Connected flue type must be identified on the identification label. Approved flue systems Choose a flue type according to the installation site. Approved flue types are written on the identification label. Flue termination The positions of the terminals in the roof or in the wall with respect to openings for ventilation must be in accordance with national regulations.

• The boiler must be installed so that the terminal is exposed to external air.

• Position of the terminal must allow the free passage of air across it at all times.

• Pluming may occur at the flue terminal. Positions where this could be a nuisance should be avoided.

• For single wall flue pipe, the minimum distance to a combustible material must be 25mm. For air intake pipe and concentric systems, the distance to a combustible material is 0(zero)mm.

• It is essential to ensure that products of combustion discharging from the terminal cannot re-enter the building or other buildings, through ventilators, windows, doors, other sources of natural air infiltration or forced ventilation.

• Minimum flue duct length must be 50cm.

4.8.10 Applicable flue systems

In this part, information about different flue systems are given. The mounting instructions for correct installation of the flue systems are included in the packaging of the flue parts as well as flue cutting instructions where needed. DANGER Flue duct must incline 3° away from the unit, to allow the condensate to drain back to the boiler and out of the condensate drain. If the flue has an internal fall then please follow instructions delivered with the flue parts. NOTICE Optional parts shown in rectangular area are used where needed. Type C13x (concentric flue system) The boiler draws combustion air from outside via a concentric coaxial pipe fitted to the external wall and expels flue gas to the outside via the external wall.4 Installation Installation manual

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05

a Wall terminal kit 60/100 Optional: b 90° elbow 60/100 c 45° elbow 60/100 d 30° elbow 60/100 e Inspection elbow 60/100 f Extension 60/100 L = 500-1000mm Allowable flue length for C13x Concentric 60/100mm (a) 7.0m Concentric 80/125mm (a) 33.6m (a) Including 1 90° elbow Equivalent length of options 90° elbow 60/100mm 1.5m 45° elbow 60/100mm 1.0m 30° elbow 60/100mm 1.0m 90° elbow 80/125mm 1.5m 45° elbow 80/125mm 1.0m 30° elbow 80/125mm 1.0m 60/100 flue length can be increased up to 19.9 metres by adjusting the parameter C3 to 5. Refer to servicing instructions for this operation. 80/125 flue length can be increased up to 99 metres by adjusting the parameter C3 to 5. Refer to servicing instructions for this operation. Subtract equivalent length value of bends from the allowable flue length value. Flue length determination Flue duct length (L) is measured from lip of the elbow to end of the flue terminal.

L Flue duct length a Distance of outer lip of terminal to outer wall, a≤50mm Note: Flue ducts are inserted 45mm into elbows and extensions. Type C33x (concentric flue system) The boiler draws combustion air from the outside and expels flue gas to the outside through a concentric coaxial pipe via the roof. The terminal outlets from separate combustion and air supply circuits shall fit inside a square of 50cm and the distance between the planes of the two orifices shall be less than 50cm.

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05 60/100 Vertical flue length can be increased up to 20.7 metres by adjusting the parameter C3 to 5 from the user interface. Refer to servicing instructions for this operation. 80/125 Vertical flue length can be increased up to 99 metres by adjusting the parameter C3 to 5 from the user interface. Refer to servicing instructions for this operation. Subtract equivalent length value of bends from the allowable flue length value. 80/125mm flue system To increase the maximum allowable flue duct length, 80/125 mm concentric flue ducts can be used instead of 60/100 mm. In this case, C13x and C33x flue systems should start with a 60/100 to 80/125 adapter coupled to the flue outlet.

a 60/100 to 80/125 adapter 80/125 flue parts to be used are shown below: a b c d e f a 80/125 wall terminal kit (type C13) b 80/125 roof terminal kit (type C33) c 90° elbow 80/125 d 45° elbow 80/125 e 30° elbow 80/125 f Extension 80/125 L = 500-1000mm Type C43x (concentric flue system) Several heat sources draw combustion air from the outside through the annular gap of the room sealed balanced flue system and expel flue gas to the outside via the roof, through a moisture-resistant internal pipe. The multi-served chimney is a system that is part of the building and has a separate CE marking. The connection between the boiler and the shaft and, the connection between the boiler and the air intake system must be obtained via Daikin. e f g h

a b c d a Tee flex boiler connection set 100 or 130 b Extension 60mm c Chimney connection 60/100 d Elbow 60/100 90° Optional: e 90° elbow 60/100 f 45° elbow 60/100 g Inspection elbow 60/100 h 30° elbow 60/100 i Extension 60/100 L = 500-1000mm Maximum allowable length of the flue duct up to common chimney is 2metres + 1 60/100 90° elbow. In C43x type units, condensate flow into the unit is not allowed. Type C63x (concentric flue system) To install the boiler as a C63x option the following data must be used to determine the correct diameters and lengths of the flue system. for D2C/T...ND028

• Nominal combustion products temperature: 83.4°C

• Combustion products mass flow rate: 12.35g/s

• Overheat combustion products temperature: 92.2°C

• Minimum combustion products temperature: 30.8°C

• Maximum allowable pressure difference between combustion air inlet and flue gas outlet (including wind pressures): 135Pa for D2C/T...ND035

• Nominal combustion products temperature: 88.4°C

• Combustion products mass flow rate: 15.47g/s

• Overheat combustion products temperature: 99.5°C

• Minimum combustion products temperature: 31.2°C

• Maximum allowable pressure difference between combustion air inlet and flue gas outlet (including wind pressures): 185Pa for D2C/T...ND028 and D2C/T...ND035

• Minimum combustion products mass flow rate: 2.2g/s

• The boiler must be connected to a system with the following characteristics: T120P1W

• Maximum allowable temperature of combustion air: 50°C

• Maximum allowable recirculation rate under wind conditions is 10%

• The terminals for the supply of combustion air and for the evacuation of combustion products shall not be installed on opposite walls of the building.

• Condensate flow into the unit is allowed.4 Installation Installation manual

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05 Type C53x (twin pipes flue system) Air supply and flue gas discharge from / to atmosphere in areas of different pressure. The boiler draws combustion air from outside via a horizontal pipe fitted to the external wall and expels flue gas to the outside via the roof. The terminals for the supply of combustion air and for the evacuation of combustion products shall not be installed on opposite walls of the building. h i

a Roof terminal 80mm b Flat roof outlet kit c Extension 80mm d Air intake 80mm e 60/100 to 80 80 adapter f 90° elbow 80mm Optional: g Tile roof outlet kit h 45° elbow 80mm i 90° elbow 80mm j Extension 80mm L = 500-1000-2000mm Allowable flue length for C53x Air intake duct 80mm 54m Flue outlet duct 80mm 54m Equivalent length of options 45° elbow 80mm 1.0m 90° elbow 80mm 2.0m Subtract equivalent length value of bends from the allowable flue length value. Note: The air intake length is 3metres. In case of longer air intake use, flue outlet duct length must be shortened with the same length. Type C83x (twin pipes flue system) The boiler draws combustion air from outside via a separate supply pipe routed through the external wall, and expels flue gas to a shared flue system. The multi served chimney is a system that is part of the building and has a separate CE marking. The connection between the boiler and the shaft and, the connection between the boiler and the air intake system must be obtained via Daikin. In C83x type units, condensate flow into the unit is not allowed. a b dc d f g

a Wall plate b Extension 80mm c 60/100 to 80 80 adapter d 90° elbow 80mm e Air intake 80mm Optional: f 45° elbow 80mm g 90° elbow 80mm h Extension 80mm L = 500-1000-2000mm Type C93x The boiler draws combustion air from the outside through the annular gap in the shaft (chimney) and expels the flue gas via the flue pipe to above the roof.4 Installation Installation manual

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05

a Flex kit PP Dn 60-80 or Dn 80 b Spacer c Extension Flex PP 80mm d Connector Flex-Flex PP 80mm e Chimney connection 60/100 or 80/125 f 90° elbow 60/100 (boiler outlet) Optional: g Inspection elbow 60/100 h 30° elbow 60/100 i 45° elbow 60/100 j Extension 80/125 L = 500-1000mm Instead of 60/100, 80/125 flue ducts can be used at the outlet of the boiler. In that case, the parts below are used: a b c d e a 60/100 to 80/125 adapter b 90° elbow 80/125 c 45° elbow 80/125 d 30° elbow 80/125 e Extension 80/125 L = 500-1000mm Allowable flue length for C93x Shaft Chimney cross- section Parameter

“3” “5” 60-100 Concentric circular and smooth 100 8.0 21 DN 60 Flex circular and rough 106 3.7 9.8 DN 60 Flex circular and rough 100 2.7 7.0 DN 60 Flex square and rough 95 3.8 9.9 DN 60 Flex square and rough 90 2.8 7.4 80-125 Concentric circular and smooth 124 34 100 DN 80 Flex circular and rough 140 18.2 53.5 Allowable flue length for C93x DN 80 Flex circular and rough 130 11.6 34.1 DN 80 Flex circular and rough 120 4.4 13.0 DN 80 Flex square and rough 140 23.8 69.9 DN 80 Flex square and rough 130 20.6 60.6 DN 80 Flex square and rough 120 14.8 43.5 DN 80 Star square and rough 140 58 169.5 DN 80 Star square and rough 120 40.7 119.0 Equivalent length of options 45° elbow 60/100mm 1.0m 90° elbow 60/100mm 1.5m 45° elbow 80/125mm 1.0m 90° elbow 80/125mm 1.5m Maximum allowable length of the flue duct up to common chimney is 2metres + 1 60/100 90° elbow. Subtract equivalent length value of bends from the allowable flue length value. Type B53 (open flue system) The boiler draws combustion air from the installation room and expels flue gas through the flue to above the roof (1). The boiler draws combustion air from the installation room and routes flue gas through the moisture-resistant chimney to above the roof (2). Allowable flue length for B53 Flue duct 60mm 15.0m Flue duct 80mm 100.0m Equivalent length of options 90° elbow 60mm 1.5m 45° elbow 60mm 1.0m 90° elbow 80mm 2.0m 45° elbow 80mm 1.0m Subtract equivalent length value of bends from the allowable flue length value.4 Installation Installation manual

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05

a 90° elbow 60mm b Extension 60mm Optional: c 90° elbow 60mm d 45° elbow 60mm e Extension 60mm L= 250-500-1000-1500-2000mm Type B33 (open flue system) The multi served chimnet is a system that is a part of the building and has a separate CE marking. The connection between the boiler and the shaft must be obtained via Daikin. b c

To connect the router Connect the LAN adapter to the router using the Ethernet cable. NOTICE To prevent communication problems due to cable breakdown do not exceed the minimum bend radius of the ethernet cable. Configurations NOTICE In order to use the app “Daikin Online Control Heating”, Daikin Room Thermostat must be connected to the boiler. Overview Get the app “Daikin Online Control Heating”. The adapter and the “device” running the app (smartphone or tablet) should be connected to the same router in order to be able to discover the unit. The boiler needs to be powered during the configuration. Follow the steps below;

• Power on the unit The green LED is blinking slowly when the adapter is powered and no error occurs. The yellow LED shows communication activity to the router and to the unit.

• Launch the app Run the app “Daikin Online Control Heating”.

• Agree with the terms of use When launching the app for the first time, the terms of use needs to be accepted. After this, the app can be used. Accept is enabled when reaching the bottom of the page.

• The app discovers the unit In case the adapter firmware is not up to date, the unit is shown with next to it the download button. If the adapter firmware is up to date, then no adapter upgrade is required and the “space heating” and “domestic hot water” units are shown.

• Update adapter firmware Tap the “Update” to start the update process. When the app finalizes the update the next screen with the current firmware version appears. It will take some time before the adapter finalized the firmware update + reboot process.

• Expected unit overview The “Home screen” is displayed, listing up the available units. Remarks; The overview below depends on the boiler type. E.g. for a boiler without domestic hot water unit, only the space heating unit will be visible. If not only a boiler but also e.g. an Altherma heat device is connected in the same local network (same router), then the app will also display the Altherma related units. In case of more than 1 boiler connected to the same network, all boiler units will be visible.

• Update adapter date / time 1 Start the app and go to the Home screen. 2 Tap on settings (top-right of screen), the LAN adapter time and date are displayed. 3 Tap on “Time”, this will bring up a dialog. 4 Confirm the update by tapping “Yes”. Updating firmware You can update the LAN adapter firmware using the Daikin Online Controller Heating App. When the app is opened, In case the adapter firmware is not up to date, the unit is shown with next to it the download button. Tap the “Update” to start the update process. When the app finalized the update the next screen with the current firmware version appears. It will take some time before the adapter finalized the firmware update + reboot process. Factory reset 1 Open unit control app run the app Daikin Online Control Heating. 2 Tap on settings. 3 Tap on “Factory reset”. 4 Confirm the update request by tapping OK. After successful reset, the adapter reboots. Troubleshooting LED indication 2 status LED’s are available and positioned next to the LAN connector. Status Green LED Yellow LED Normal operation Pulse every 2 seconds

LAN communication - Lights up when communication is active Adapter error Fast blinking Fast blinking Upgrade busy Slow blinking Slow blinking4 Installation Installation manual

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05 Router In case of connection problems, the router can give information about the devices connected and the corresponding IP addresses. Also check on the router if DHCP is enabled. Error codes Following errors displayed on the app are hampering the proper operation of the adapter. Error Code Description U4-65 Connection with the boiler or the connection between boiler and Remote Control is lost. H9-01 Connection with the outdoor sensor is lost.

4.9 To fill the system with water

CAUTION Water filling must be done while the boiler is in standby mode. Method 2 (For model D2C20ND028A5AA and D2C24ND035A5AA)

a Use a disconnector or a double check valve according to local regulations. After all system connections are performed with care, perform the following steps: 1 Connect the appliance to the main power supply. Due to low pressure, error code "Err HJ-09" will appear on the user interface and the status indicator light will be red. 2 Open all radiator valves. 3 Set all isolating valves to closed position. 4 Connect the filling loop to the valve 7 and valve 8. 5 Set valves 1, 3, 5, 6 and 8 to open position. 6 Slowly open the valve 7 until pressure reaches a value around

0.8 bar for system heights up to 6 metres. For longer system

heights, see "4.5 Central heating system requirements" on page 10 to determine filling pressure. Filling operation should be done slowly. When pressure exceeds 0.8bar, error code will disappear and the status indicator light will turn to blue. Turn the valve 7 off. 7 You can monitor the system pressure value from the user interface. 8 Make sure the automatic air vent valves located on the pump and heat exchanger are opened. Vent the air from the installation with the manual air vent screws on the radiators. Make sure screws are tightened after venting. 9 If after the venting the pressure decreases below 0.8bar, refill with water until the pressure reaches 0.8 bar again. 10 Set valve 8 to off position. Remove the filling loop if it is required by local regulations. 11 Check the central heating circuit - especially the couplings of the circuit - for leakage. 12 Isolate the boiler from power mains.

4.10 Converting for use with a different

type of gas WARNING Gas conversion operation can only be carried out by qualified competent persons. DANGER Isolate the boiler from the power mains before gas conversion operation.

4.10.1 To convert the system for use with a

different type of gas 1 Open the front cover of the unit as described in this manual. 2 To set natural gas, adjust screw on the gas valve to position "1". 3 To set LPG, adjust the screw to position "2". 4 Mount the front cover, connect the unit to the main power supply.

4.10.2 To modify settings for gas conversion

1 Enter the menu section from the user interface. Select service settings by using the left dial. 2 Press the "Enter" button and choose the password by using the right dial and press the "Enter" button again. 3 Choose "C" parameters via left dial and press the "Enter" button. 4 Choose "CE" and press the "Enter" button. It will ask for password again. Choose the password and press the "Enter" button. 5 Choose "C0" and press the "Enter" button. 6 To convert to LPG, choose "1" with the right dial and press the "Enter" button, To convert to Natural gas, choose "0" with the right dial and press the "Enter" button. 7 Leave the menu screen and go back to the home screen by using the "Back" button. INFORMATION Only qualified persons have access to servicing parameters. The passwords needed to access service parameters are written in servicing instructions. INFORMATION When a conversion is performed, the identification label shall be marked to show the gas type in use.5 Commissioning Installation manual

D2C20ND028A5AA + D2C24ND035A5AA Wall-mounted condensing boiler 3P469346-10J – 2018.05 5 Commissioning WARNING Only qualified persons should conduct commissioning. CAUTION Preliminary electrical system checks such as earth continuity, polarity, resistance to earth and short circuit must be carried out by using a suitable test meter by a competent person.

5.1 To fill the condensate trap

INFORMATION Water must be poured into the inner tube. Fill the condensate trap by pouring 0.3litres of water from the boiler flue outlet.

5.2 Gas-air ratio: No need to adjust

The installer does not have to adjust the gas-air ratio, because the boiler has an electronic gas adaptive feature.

5.3 To check for gas leakage

DANGER Before passing next steps, this control must be fulfilled. 1 Before connecting the unit to power mains, close valves 1, 2 and 3. 2 Connect a manometer to gas counter. 3 Open valves 1, 2 and 3. 4 Close valve 1. 5 Note the manometer measurement and wait for 10minutes. 6 After 10 minutes, compare the manometer measurement with the initial value. If the pressure is decreased, it means there is gas leakage. Check the gas line and fittings. 7 Repeat this process until being sure that there is no leakage. 8 Close valve 1, remove the manometer and open valve 1 again.

36 Hand-over to the user Installation manual D2C20ND028A5AA + D2C24ND035A5AAWall-mounted condensing boiler3P469346-10J – 2018.05

5.4 To commission the unit

Legend - User interface:

a Left dialb LCD screenc Right diald Mode / Resete Status indicatorf Cancel / Backg Menu / Enter 1 Make sure the system is filled with water and fully vented as described in this manual. 2 Check that the central heating and domestic hot water isolating valves are open. 3 Check that gas service valve is open. 4 Connect the unit to the main power supply. The user interface will be energised.

5.4.1 To commission the central heating

1 Set mode to winter mode via "Mode" button on the user interface. ( and icons are displayed on the screen.) 2 Set central heating set temperature to maximum value via left dial. If connected, make sure all external controls such as outdoor sensor and room thermostat are calling for heat. 3 The boiler control now go through its ignition sequence. The status indicator will glow constantly in blue if flame is established. icon will blink when central heating is active. INFORMATION After first power ON, the boiler does not increase its capacity above a preset value for about 12minutes, even if there is demand.

• First 0~2minutes: The electronic gas adaptive system calibrates itself.

• Next 8~10minutes: The boiler performs the low water temperature function. You can skip this function by pressing the "Cancel" button for 5seconds. 4 Press "Cancel" and "Menu" buttons together 5 seconds to activate the sweeper mode. With sweeper mode, boiler can be operated at maximum and minimum capacity independent of heat demand. 5 "tst - 100" caption will appear on the screen. This means boiler is operating at nominal capacity. Check nominal capacity operation. 6 To quit sweeper mode, again press "Cancel" and "Menu" buttons together five seconds. Sweeper mode will be deactivated and boiler will return to normal operation mode. Sweeper mode also finishes automatically after 15minutes.

5.4.2 To commission the central heating

capacity setting The boiler's central heating capacity can be adjusted form the control panel. If the heat loss of installation is much less than that of the boiler nominal capacity, it is recommended to reduce the boiler nominal capacity to the installation capacity. Refer to service instructions for this operation.

5.4.3 To commission the domestic hot water

1 Set domestic hot water set temperature to its maximum value via right dial. 2 Open hot water taps fully and ensure that water flows freely from them. 3 icon will blink when domestic water heating is active. 4 Measure the domestic hot water inlet temperature. (Cold water drawn off from taps) 5 Check that domestic hot water temperature rise is around 34°C. 6 Hand-over to the user After completing the installation and commissioning of the system the installer should hand over to the householder.

• Hand the operation manual to the householder and inform them about his/her responsibilities under the relevant national regulations.

• Explain and demonstrate the lighting and shutting down procedures.

• Explain the function and the use of the boiler heating and domestic hot water controls.

• Explain and demonstrate the function of temperature controls, radiator valves etc., for the economic use of the system.

• Explain the function of the boiler error mode. Emphasise that if an error is indicated refer to "Error codes" in the operation manual.

• Inform the user about frost protection function and advise never to cut off the electric supply to the boiler.

• Emphasise that a comprehensive service should be carried out annually, especially before winter.

• Inform the householder of the guarantee and the requirement to register it to receive the full benefit of the warranty.Table des matières Manuel d'installation