3. System build-up.

3. System build-up

3. System build-up Wall hung indoor unit EHB*CB: components
Integrated indoor unit EHV*CB: components Small outdoor unit ERLQ-CA Big outdoor unit ERHQ-BA Big outdoor unit ERLQ-CA DHW tank Solar kit Extra: bypass, cyclone filter, bizone kit

3.1. Wall hung indoor unit EHB*CB
Piping diagram

1) Water filter Gives protection to the plate heat exchanger, pump,etc. against particles that can cause blockage. Advised is still to use additional magnectic/cyclone filter. Besides this water filter, installing additional field supply magnectic/ cyclone filters are advised. (especially for renovation projects) Component Water filter Material Copper- brass – stainless steel Mesh opening 1mm

2) Thermistors R1T: Water temp. after PHE R2T: Water temp. after BUH R3T: Refrigerant liquid thermistor => Refrigerant side R4T: inlet water thermistor These 5 thermistors are used to measure the temperature at multiple locations inside the Daikin Altherma unit. 3 are related to water circuit, 1 is related to the refrigerant circuit and another 1 for the DHW. All sensors are processed by the A1P PCB board (main pcb) R1T R2T R3T R4T Color indication Blue Yellow Red White Used Water temp. after PHE Water temp. after BUH Liquid temp. Inlet water temp.

3) Plate heat exchanger Transfers the heat from the refrigerant circuit to the water circuit in counter-flow pattern. In Copper Brazed (CB) heat exchangers, the surfaces used to provide heat transfer from one medium to the other are thin, corrugated AISI 316 stainless steel plates stacked on top of each other. The two media are sealed within the plate pack by a brazed copper seal around the edge of the plates. This results in a heat exchanger that – unlike traditional designs – consists solely of surfaces which actively contribute to heat transfer, resulting in significant increases in overall efficiency. The channels formed between the plates and corner ports are arranged so that the media flow through alternate channels – always in a counter-current flow pattern in order to achieve the most efficient heat transfer. The contact points between the plates are also brazed, helping to withstand the effects of high pressures and high temperatures. AC models Brazed heat exchangers used for HVAC applications normally use a parallel flow to achieve the most efficient heat transfer. In a single-pass design, all the connections are located on one side of the heat exchanger, making installation very easy. Alternate channel pattern When used as an evaporator, the channels formed between the corrugated plates and corners are arranged so the two media flow through alternate channels, always in opposite directions (counter-current flow). The two-phase refrigerant (vapour + liquid) enters at the bottom left of the unit. The vapour quality depends on operating conditions in the refrigeration plant. Dry expansion Evaporation of the liquid phase takes place inside the channels. Some degree of superheating is always required – hence the process being called "dry expansion". AC Series as condenser When used as a condenser, the main components are still the same as for the evaporator. The refrigerant enters at the top left as a hot gas and starts to condense on the surface of the channels. Once fully condensed, it is then subcooled slightly, in a process called "free condensation". Model Type of plate H/E Number of plates 004 CBH62 20 008 28 011 & 016 ACH-30EQ 72

4) Flowsensor Will measure the flow in the water circuit and depending on the output, the system can be stopped. Typical pressure drop Type: SIKA Vortex flow sensor VVX20 In this flow sensor, there are no moving parts (no mechanical wear). The Piezo-ceramic sensor has to detect the vortices (but no direct contact with the water thanks to encapsulation) The length of the flow sensor cable may vary according the model (wall mounted vs integrated) Read out of table, example: When the flow rate is 30 l/min, you will have a pressure drop over the flowsensore of +/- 48 mbar. Flow sensor Output flow signal Analog 0,5~3,5V Power supply 5VDC

5) Airpurge Eliminate residual air in the heating system without the need for a manual intervention. The air is vented from the system by turning the plug on the air outlet anticlockwise by one complete turn from the fully closed position. Air is automatically vented if the cap is kept in this position. The body and cover are in brass and the obturator in silicone rubber. ! The float is fitted so that when it is in a rest position, the obturator (can not be reached by water) is not affected by any external movement. When the air purge valve must be replaced, use Permabound A131 or Loxeal Air purge Connection 3/8” Discharge Horizontal Max. venting pressure 4 Bar

6) Backup Heater Will assist the heat pump system to heat the water for space heating and domestic hot water operation. Type Wall hang Integrated Air purge valve included Yes No BUH has special plate inside, to be able to collect the air bubbles better . For the Integrated model, be carefull when mounting. (fixation holder + electrical cable) safety

7) Expansion vessel Protects closed water heating systems from excessive water pressure caused by thermal expansion. The expansion vessel relieves the pressure that builds up through thermal expansion in a closed-system water heater by giving the excess water someplace to go. As the water pressure increases, it pushes the diaphragm of the expansion vessel down, compressing the air on the other side, creating more space for the water and relieving the building pressure of the system Expansion vessel Max. operating pressure 3 Bar Max. operating temperature + 90°C Factory pre-charge 1 Bar +/- 20% Nominal volume 10L

8) Safety valve Helps controlling the water pressure in the heating system. When the calibrated pressure is reached, the valves will open and discharge to atmosphere, preventing that the system pressure reaches dangerous levels for the system and its components. Safety valve Max. opening pressure Pset + 20% * Pset Min. closing differential Pset - 20% * Pset Pset 3 bar Connection Male/Female Material of body brass EN CW617N Standard diaphragm safety relief valve with pressure gauge connection. Bearing CE mark as per Directive 97/23/CE. Threaded connections 1/2” M x 1/2” F. Calibration 3 bar (calibrations available 3 and 6). Maximum temperature 110°C. Brass body. Diaphragm and seal in EPDM. Control knob in ABS. If you install safety valve in the water system, it can be fitted vertically or horizontally but never upside down. This prevents deposits of impurities from affecting correct functioning. It must also be installed in line with the flow direction indicated by the arrow on the valve body. When it is installed close to the DHW tank, make sure that there are no shut-off devices between the valve and this storage cylinder. The discharge safety valve must be installed visible and carried in suitable collection pipework.

9) Manometer Measures the pressure of the water system Manometer Range 0 ~ 4bar Capillary material Cupper Operating ambient temperature 0 ~ 60°C Operating liquid temperature 0 ~ 70°C Accuracy at testpoint 1 bar +/- 0,2 bar For an operating Daikin Altherma, it should always indicate between 1 & 2 bar.

10) Water pump The pump type depends on the unit size: 04~08 11 16 Pump type Wilo-Yonos Para RS 15/7.0 PWM1 Wilo-Yonos Para RS 15/7.5 PWM1 Grundfos UPML PWM Nominal power 37W 70W Power consumption 1~230V => 3~45W 1~230V => 3~76W 1~230V => 3~140W speed 800~4250 rpm 800~4800 rpm Remark: When the unit is not operating (for example during summer), the pump will start up once every day for 5 seconds to make sure that it does not rust/get stuck. (One of the reasons why the unit should stay on the power cirquit)

10) Water pump Model Pump type Pump housing Impeller Pump shaft Bearing 04~08 Wilo-Yonos Para RS 15/7.0 PWM1 Cast iron with cataphoreris treatment PP composite with GF 40% Stainless Steel Carbon, metal impregnated 011 Wilo-Yonos Para RS 15/7.5 PWM1 016 Grundfos UPML PWM Electro coated cast iron / stainless steel composite with GF 30% Ceramics Carbon

3.2. Integrated indoor unit EHV*CB
Piping diagram Idem for CA.

3.2. Integrated indoor unit EHV*CB
The integrated unit has mainly the same components as the wall hung unit, only main difference is the tank thermistor: R5T: tank thermistor R5T Color indication Orange Used DHW temperature

3.3. Small outdoor unit ERLQ-CA
Piping diagram - heating

Piping diagram - cooling

1) Compressor and accumalator assembly Hermatically sealed Swing technology No cranck case heater Component ERLQ004CAV3 ERLQ006CAV3 ERLQ008CAV3 Compressor Inverter type 2YC36BXD#C 2YC45DXD#C Accumulator 2 Yes Refrigerant oil Daphne FVC50K Charged volume 0,75L Specific compressor for 004 class. Better to use a small compressor operating at normal frequencies, compared to a bigger compressor operating at too low frequencies (meaning lower efficiency and lower energy consumption). Accumalator assy is different for the 2 different compressors. 1 inlet pipe and 2 outlet pipes (1 for every swing). In case of liquid return, there is a plate on the inside top that assure that the refrigerant is diverted to side and in this way will go to the bottom. This part is sometimes freezing as this refrigerant is absorbing the heat. Accumulator has a volume of 500cc

2) High pressure switch The HP switch in the discharge line protects the unit against too high pressure. It has the following operation condition: Activation HP switch: 41,7 -0,1 bar Reset HP switch: 32 +/- 0,2 bar When replacing the high pressure switch (brazing), make sure to wrap the switch body with a wet cloth to make sure that the temperature of the body stays under 100°C (prevent deformation)

3) Four way valve Used to switch the HP from heating (ON) to cooling mode (OFF) Reversed cycle for defrost

4) Heat exchanger Header Capillary tube Fin pitch of 1,8mm 32 stages Tube type ø8 Hi-XA

5) Outdoor unit fan & fan motor Will assist to control the differential pressure between high and low pressure side. Will also be controlled in function of ambient temperature and condensation temperature. Component Fan motor Type Propeller Discharge direction Horizontal Output [W] 53

6) Expansion valve 2 components: body + coil Y1E gives pulses to open or close the body Component Expansion valve motor Coil operating voltage 12VDC +/10% Body pulse output 0~480pls Coil resistance 46Ω +/- 4Ω (20°C) Lead wire 5-wire (red = common) type Bidirectional electronic type The expansion valve exists out of 2 components. First part: body => the refrigerant is passing in this part. Second part: coil => is electronic, and will give pulse to the body to open or close. The amount of pulses will indicate the opening grade of the body and this way it controls how much refrigerant is passing. In the beginning, a surplus of pulses is sent out, to be sure of the zero pulse point (base point) which means fully closed position (the pcb does not get feedback from the EEV). The stopper of the coil has to fit over the incoming refrigerant pipe of the body (this is very important to have correct idea of zero pulse point). Also some strainer is inside the piping, to protect the body against dirt/small particles.

7) Service port Liquid stop valve Gas stop valve has schräder port to evacuate refrigerant Field piping connections size Schräder valve Liquid line 9,5 mm No Gas line 15,9 mm Yes

8) Pressure sensor S1NPH: detection HP & control ou fan => More optimised subcool Use of pressure sensor: Detailed measurement of condensing pressure level, to evaluate the optimal amount of subcool, maximising the HP efficiency. Previously Tc was calculated by temperatures and “some assumptions” If pressure is to high, fan speed will increase.

9) Accumulator To collect refrigerant and prevents compressor damage from liquid back and oil that could enter the compressor from the suction line. suction accumulator ensures the refrigerant re-evaporation and suction by the compressor, and the return of the oil trapped in the lower part of the accumulator as well Content 1200cc A suction line accumulator prevents compressor damage from a sudden surge of liquid refrigerant and oil that could enter the compressor from the suction line.

10) Thermistor R1T: Discharge pipe thermistor R2T: Heat exchanger thermistor R3T: Outdoor air thermistor

3.4. Big outdoor unit ERHQ-BA
Piping diagram: Single phase - heating

Piping diagram: Single phase - cooling

Piping diagram : Three Phase - heating

Piping diagram : Three Phase - cooling

3.5. Big outdoor unit ERLQ-CA
Piping diagram: single and three phase - heating Improve performance -increased capacity at low ambient temperatures -extended operation range on 1p-units -improved capacity during DHW production 2) Avoid blockage of bottom plate -hot gas defrosting -adding sub cool pass -increase holes in bottom plate --improve bottom plate heater (smaller capacity and intelligent control) 3) Avoid ice accumulation -software update -remove grid from side plate -snow cover option

Piping diagram: single and three phase - cooling Improve performance -increased capacity at low ambient temperatures -extended operation range on 1p-units -improved capacity during DHW production 2) Avoid blockage of bottom plate -hot gas defrosting -adding sub cool pass -increase holes in bottom plate --improve bottom plate heater (smaller capacity and intelligent control) 3) Avoid ice accumulation -software update -remove grid from side plate -snow cover option

Piping diagram: single and three phase DEFROST Improve performance -increased capacity at low ambient temperatures -extended operation range on 1p-units -improved capacity during DHW production 2) Avoid blockage of bottom plate -hot gas defrosting -adding sub cool pass -increase holes in bottom plate --improve bottom plate heater (smaller capacity and intelligent control) 3) Avoid ice accumulation -software update -remove grid from side plate -snow cover option

3.5 Big outdoor unit ERLQ-CA
1) Expansion valve 2 components: body + coil Main valve Y1E used to regulate the suction SH value Injection valve Y3E used to control the discharge temperature Component Expansion valve motor Coil operating voltage 12VDC +/10% Body pulse output 0~480pls Coil resistance 46Ω +/- 4Ω (20°C) Lead wire 5-wire (red = common) type Bidirectional electronic

3.5 Big outdoor unit ERLQ-CA
2) Service ports + internal service port Liquid stop valve Gas stop valve Internal service port (5/16”): used to connect pressure gauge or to evacuate refrigerant Field piping connections size Schräder valve Liquid line 9,5 mm No Gas line 15,9 mm Yes Service port 5/16”

3) Subcool pass sealing distributor ERLQ*BAV ERLQ*CAV3 Before the refrigerant pipe is split up by the distributer to the hairpins, the pipe passes through the bottom of the coil. The subcool pass is an additional sealing at the bottom of the heat exchanger to reduce the cooling by airflow

4) Hot gas by-pass Hot gas pass in bottom plate to keep the temperature of the bottom plate positive. All drain holes are open so drain can get out of the unit Limited operation (only shortly before and during defrost cycle hot gas will pass through the hot gas pipe)

5) Improvements result in extended operation range (liquid injection) At low ambient + high leaving water temperature, the liquid injection prevents the compressor from getting too hot due to high discharge temperature. New in this model is an electronic expansion valve with optimized injection quantity.

6) Bottom plate – Bottom plate heater 100W reduced to 35 W Standard operation only during defrost (3 min.) and max. 3 times per hour Reduction of electrical consumption More height difference In extreme conditions, the electrical bottom plate heater might still be needed, but a smaller size (from 100W reduced to 35 W compared to previous model) Old system capacity: 100W continuous operation if Ta is below 5°C New system capacity: 35W operation only during defrost (3 min.) and max. 3 times per hour 5 drain holes

7) Improvements for cold climate 60 70 10 To optimize the accuracy of the ambient sensor, we advise the installer to modify the position of the sensor. An adaptor tool for easy and fast modification can be found in the accessory bag.

3.6 DHW tank Stainless steel tank EKHWS150B3V3 (200,300)
EKHWSU150B3V3 (200,300) EKHWS200B3Z2 (300)

3.6 DHW tank - Stainless steel tank
Hot water connection Anode Hot water recirculation connection Switchbox H/P Thermistor connection Stainless steal tank: anode is required for first passivation. No need to replace. Sacrificial anode. FROM 2014, the stainless steel tank is delivered without anode. The passivation layer is now executed in factory (pickling, chemical treatment) => change in name label. The modelname will have additional letter. (This is not traceable in SAP). Name is then EKWS*BB3V3 H/P Inlet connection Solar Thermistor connection Cold water connection H/P Outlet connection

3.6 DHW tank Enameled tank EKHWE150A3V3 (200,300) EKHWE200A3Z2 (300)
EKHWET150A3V3

3.6 DHW tank - Enameled tank
Hot water connection Hot water recirculation connection Switchbox H/P Thermistor connection H/P Inlet connection Solar Thermistor connection H/P Outlet connection Cold water connection

3.6 DHW tank - Enameled tank
1 Anode 2 Hot water connection (3/4" MBSP)(a) 3 Pressure relief valve connection (1/2" MBSP) (a) 4 Electrical box 5 Recirculation hole (3/4" MBSP) (a) 6 Thermistor socket 7 Heat exchanger inlet (3/4" FBSP) (b) 8 Heat exchanger coil 9 Heat exchanger outlet (3/4" FBSP) (b) 10 Cold water connection (3/4" MBSP) (a) 11 Thermistor hole for use with solar kit option. Refer to the Installation manual EKSOLHWAV1. 12 Electric heater element 13 Inspection flange 14 Thermal cut out 15 Cable entry from indoor unit Cable entry for use with optional solar kit (a) MBSP = Male British Standard Pipe (b) FBSP = Female British Standard Pipe

3.7 Solar Digital I/O PCB is required when connecting solar kit to the hydro-box => is then also supplied with the solar kit Solar kit is only for wall hung units, Integrated models can not be combined with solar EKSOLHWAV19 Solar kit EKSR3PA controller EKSRDS1A pump station Digital I/O PCB is required when connecting solar kit to the hydro-box => is then also supplied with the solar kit Solar kit is only for wall hung units, Integrated models can not be combined with solar

3.7 Solar - EKSOLHWAV19 Hydro Solar Tank
Only possible on the stand alone Daikin tank. Not for integrated model

3.7 Solar - EKSOLHWAV19 Hydro Solar Tank

3.7 Solar – EKSR3PA Main switch Display Solar panel temp. Tk
Solar feed temperature and flow rate display Tv Storage tank temp. Ts Solar return temp. Tr EKSOL circulation pump Solar Circulation pump Ps Arrow key up Arrow key down Info button

3.7 Solar - EKSRDS1A Pump station
Outside cover Temperature gauge on solar return line Temperature on solar feed line Connection of solar return line (ø 22mm) Connection of solar feed line (ø 22mm) Safety valve with pressure gauge (solar panel circuit) Connection of diaphragm expansion vessel (MAG) (ø 22mm) Circulation pump (solar panel circuit) Fitting and drainage cock (solar panel circuit) Flowmeter (solar panel circuit) Connection of pump feed pipe to solar connection kit EKSOLHWAV1 (ø 22mm) Connection of pump return line to solar connection kit EKSOLHWAV1 (ø 25mm) Drilled holes for mounting the pump on the wall Venting pot Standard equipped with safety valve (6 bar), pressure gauge and connection for expansion vessel Flow and return temperature indication Non return valves included Flow indicator standard included Pump unit EKSRDS1A Install the expansion vessel and pump unit LOWER then the panels. Reason: damage could occur when vapor is formed during standstill of the water. Connection pipes Pressure-resistant metal piping must be used. Plastic piping is not allowed because scalding can occur when incorrect connection pipes are used

Bi-zone kit BZKA7V3 Available 06/2015

3. System build-up.

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