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Daikin RKHBRD014ADV17 [9/48] Design of the hydraulic system
![Daikin RKHBRD014ADV17 [9/48] Design of the hydraulic system](/views2/1797854/page9/bg9.png)
RKHBRD011~016ADV17+Y17
Indoor unit for air to water heat pump system
4P403581-1B – 2017.09
Installation manual
6
Design of the hydraulic system
When designing the hydraulic system, always consult "Typical
application examples" on page 2 for references.
When designing the hydraulic system always consider the available
external static pressure of the RKHBRD* unit.
The pump will adjust its rpm (rotations per minute) as to control a
fixed ∆T between return and leaving water temperature.
This external static pressure-graph is valid at maximum pump rpm.
Simultaneous operation of the auxiliary boiler and the
RKHBRD* unit is NOT allowed.
Pay special attention to the control of the circulation
pump of the auxiliary boiler. This pump should not
operate simultaneously with the RKHBRD* unit.
A simultaneous operation of both systems will risk the
plate heat exchanger of the RKHBRD* unit to freeze-
up!
External static pressure (kPa)
Flow (l/min)
Without 3-way valve
Including 3-way valve
Maximum external static pressure if ∆T = 10°C
Maximum external static pressure if ∆T = 5°C
10
20
30
40
50
60
70
80
0
19
1715 21 23 25 27 29 31 33 35 37 39 41 43 45 47
flow
[
l/min
]
ESP
[
kPa
]
90
100
16 kW
14 kW
14 kW
11 kW
11 kW
16 kW
NOTE
When replacing an old gas or fuel oil boiler by a air to
water heat pump system (RKHBRD*):
■ please always check the specifications of the
pump of the old unit;
■ if the external static pressure of that pump is
higher than the external static pressure of the air
to water heat pump system, please install an
additional pump with higher external static
pressure in combination with a balancing bottle.
Example of a high external static pressure system
3 421
1 Air to water heat pump system (RKHBRD*)
2 Balancing bottle
3 High external static pressure pump (field supply)
4 High external static pressure system
3 34 5 621 8
7
10
11
A B
9
12 13 13 13
C
C1
1 Outdoor unit
2 Indoor unit
3 Electronic expansion valve
4 Refrigerant heat exchanger
5 Water heat exchanger
6 Pump
7 Compressor
8 Balancing bottle (field supply)
9 Pump (field supply)
10 Collector (field supply)
11 By-pass valve (field supply)
12 Shut off valve (field supply)
13 Radiator (field supply)
C1 Remote controller
A Installation place
B Living room
C Example of a high static pressure system:
radiators installed in series or very small piping
4PEN403581-1B_2017_09.book Page 6 Friday, October 6, 2017 11:54 PM
Содержание
- Indoor unit for air to water heat pump system 1
- Installation manual 1
- A pozitivně zjištěno 3
- A pozitívne zistené 3
- According to the according to the 3
- Ako bolo uvedené v 3
- Alapján a z 3
- And judged positively by 3
- Ar pilnu atbildību apliecina ka tālāk aprakstītās iekārtas uz kurām attiecas šī deklarācija 3
- Are in conformity with the following standard s or other normative document s provided that these are used in accordance with our instructions 3
- As set out in 3
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- Están en conformidad con la s siguiente s norma s u otro s documento s normativo s siempre que sean utilizados de acuerdo con nuestras instrucciones 3
- Estão em conformidade com a s seguinte s norma s ou outro s documento s normativo s desde que estes sejam utilizados de acordo com as nossas instruções 3
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- Pen403581 1b_2017_09 book page 1 friday october 6 2017 11 54 pm 3
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- Szerint 3
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- Za dodržení ustanovení předpisu 3
- Za předpokladu že jsou využívány v souladu s našimi pokyny odpovídají následujícím normám nebo normativním dokumentům 3
- Zertifikat 3
- Zgodnie z dokumentacją 3
- Zgodnie z postanowieniami dyrektyw 3
- Zoals vermeld in 3
-  ó è û ìêˆó ìâ ùô îfiïô ıô úfiù ô ïïô ááú êô î óôóèûìòó fi ùëó úô fiıâûë fiùè úëûèìô ôèô óù è û ìêˆó ìâ ùè ô ëá â ì 3
- Ëáèòv fi ˆ ô ó ùúô ô ôèëıâ 3
- Ëìâ ˆûë 3
- Ëïòóâè ìâ ôîïâèûùèî ùë â ı óë fiùè ô âíô ïèûìfi ûùôó ô ô ô ó ê úâù è ë úô û ïˆûë 3
- Ìâ ù úëûë ùˆv è ù íâˆv ùˆv 3
- Î è îú óâù è ıâùèî fi ùô 3
- În conformitate cu 3
- În urma prevederilor 3
- Û ìêˆó ìâ ùô 3
- Ürünün talimatlarımıza göre kullanılması koşuluyla aşağıdaki standartlar ve norm belirten belgelerle uyumludur 3
- Şi apreciat pozitiv de 3
- В соответствии с положениями 3
- Декларира на своя отговорност че оборудването за което се отнася тази декларация 3
- Директив со всеми поправками 3
- Директиви с техните изменения 3
- Забележка 3
- Заявляет исключительно под свою ответственность что оборудование к которому относится настоящее заявление 3
- И в соответствии с положительным решением 3
- И оценено положително от 3
- Как указано в 3
- Както е изложено в 3
- Примечание 3
- Следвайки клаузите на 3
- Согласно 3
- Соответствуют следующим стандартам или другим нормативным документам при условии их использования согласно нашим инструкциям 3
- Съгласно 3
- Съответстват на следните стандарти или други нормативни документи при условие че се използват съгласно нашите инструкции 3
- Installation manual 4
- An optional ekrp1ahta demand pcb can be connected to the indoor unit this pcb is needed when the optional heater kit rkbuh or rotex room thermostat rkrtr or rkrtw is installed or when multiple set point control is used and provides the communication with the indoor unit 5
- An optional ekrp1hba digital i o pcb can be connected to the indoor unit and be used to remotely monitor your system this address card offers 3 voltage free outputs 5
- An optional rkbuh heater kit can be combined with the indoor unit purpose is to provide an additional heating capacity during cold outdoor temperatures the heater kit has a heating capacity of 6 kw and available for both 1 phase and 3 phase power supply specifications when using this heater kit installation of the optional demand pcb is required as well 5
- An optional room thermostat rkrtr or rkrtw can be connected to the indoor unit 5
- An optional secondary rkruahta remote controller with room thermostat functionality can be connected to the indoor unit purpose is to provide the possibility to install the standard remote controller near the unit for service reasons and install another remote controller in another place e g living room to operate your installation 5
- Application 1 5
- Application examples with only 1 heat emitter and 1 heat source rkhbrd unit 5
- Demand pcb option 5
- Digital i o pcb option 5
- Heater kit option 5
- If only 1 heat emitter all system has 1 water set point it is recommended not to use a balancing bottle 5
- If this option is installed it is not possible to use the remote controller thermostat function 5
- Indoor unit 5
- Installation of the rrrq heat pump outdoor is described in the outdoor unit installation manual 5
- Model identification 5
- Operation of the indoor unit is described in the indoor unit operation manual 5
- Refer to the demand pcb installation manual for further details 5
- Refer to the heater kit installation manual for further details 5
- Refer to the installation of the remote controller on page 17 for further details 5
- Refer to the operation manual of the indoor unit and to the digital i o pcb installation manual for more information 5
- Refer to the room thermostat installation manual for further details 5
- Refer to the wiring diagram or connection diagram for connecting this pcb to the unit 5
- Remote controller option 5
- Room thermostat option 5
- Scope of this manual 5
- Space heating and domestic hot water heating with a single remote controller installed in the living room 5
- The application examples given below are for illustration purposes only 5
- This installation manual describes the procedures for handling installing and connecting all rkhbrd indoor unit models 5
- Typical application examples 5
- Using a balancing bottle will affect the optimal pump control of the unit and will increase the cost of the system unnecessarily 5
- I application 2 6
- I application 3 6
- Optionally the rotex room thermostat rkrtr or rkrtw can be connected to the rotex system rotex can not guarantee neither good operation nor reliability of the system if another thermostat is used for those reasons rotex can not give warranty of the system in such case 6
- Refer to the chapter electrical wiring work on page 15 about connecting the master and slave remote controller 6
- Space heating and domestic hot water heating with a single remote controller installed with the unit and the external room thermostat installed in the living room 6
- Space heating and domestic hot water heating with one remote controller installed with the unit and another remote controller installed in the living room 6
- The remote controller gives immediate feedback to the indoor unit and by doing so it matches in a smart way the unit performance to the demanded space heating requirements in this way there is no frequent start stop of the unit or there are no too big temperature fluctuations in the to be heated rooms this remote controller has also a smart logic functionality which controls the combined space heating and domestic hot water demand e g if room temperature drops more than 3 c during domestic hot water operation the unit will automatically switch back to space heating the main remote controller c1 is installed in the living room and can access all settings master the second remote controller c2 can not access schedule and field settings slave 6
- The remote controller gives immediate feedback to the indoor unit and by doing so it matches in a smart way the unit performance to the demanded space heating requirements in this way there is no frequent start stop of the unit or there are no too big temperature fluctuations in the to be heated rooms this remote controller has also a smart logic functionality which controls the combined space heating and domestic hot water demand e g if room temperature drops more than 3 c during domestic hot water operation the unit will automatically switch back to space heating there is no remote controller near the unit during service maintenance an additional remote controller can be connected by a service person 6
- There is only a room thermostat on off control there is no smart logic functionality for space heating when there is simultaneous demand of space heating and domestic hot water the domestic hot water operation is performed according to the minimum and maximum timer operation 6
- Application examples with 2 or more different heat emitters and 1 heat source rkhbrd unit 7
- I application 4 7
- I pattern a the domestic hot water tank is installed in parallel with the temperature reducing device s this allows operating the unit in space heating and domestic water heating simultaneously the balancing of the water distribution is in this case the responsibility of the installer 7
- I pattern b the domestic hot water tank is installed in a separate circuit with a 3 way valve of the temperature reducing device s this configuration does not allow simultaneous domestic hot water and space heating operation 7
- Refer to the chapter multiple set point control on page 29 for more information about the configuration of your system 7
- Space heating provided through a combination of floor heating loops fan coil unit and radiator heating for floor heating applications in combination with radiators the water temperature delivered by the rotex system is too high for this reason a temperature reducing device field supply is required to lower the water temperature the hot water will be mixed with cold water to lower the temperature the control of this field supplied valve is not done by the heat pump system the operation and configuration of the field water circuit and selection of the balancing bottle the pumps etc are the responsibility of the installer rotex only offers the possibility to have multiple set points on request 7
- Such installations must be done using a balancing bottle and each kind of heat emitter should have a specific pump 7
- Using different heat emitters means using different water set points for the system 7
- Application examples with 2 different heat sources auxiliary boiler rkhbrd unit 8
- Bivalent operation is only possible for space heating operation not for the domestic hot water heating operation domestic hot water in such an application is always provided by the domestic hot water tank which is connected to the rotex indoor unit 8
- During heating operation of the boiler the boiler will operate so as to achieve the target leaving water temperature as set on the boiler controller 8
- For this reason never put the target leaving water temperature set point on the boiler controller above 80 c and install an aquasta 8
- Frequent switching may cause corrosion of the boiler in an early stage contact the manufacturer of the boiler 8
- I application 5 8
- I be sure that the boiler and the integration of the boiler in the system is in accordance with relevant european and national regulations 8
- I during heating operation of the rkhbrd unit the unit will operate so as to achieve the target leaving water temperature as set on the user interface when weather dependent operation is active the water temperature is determined automatically depending on the outdoor temperature 8
- I field wiring 8
- I make sure that auxiliary contact c has sufficient differential or time delay so as to avoid frequent changeover between the rkhbrd unit and the boiler if the auxiliary contact c is an outdoor temperature thermostat make sure to install the thermostat in the shade so that it is not influenced or turned on off by the sun 8
- I operation when the room thermostat th closes either the rkhbrd unit or the boiler starts operating depending on the position of the auxiliary contact c 8
- I rotex can not be put responsible for incorrect or unsafe situations in the boiler system 8
- Make sure that return water to the rkhbrd heat exchanger never exceeds 80 c 8
- Make sure that the non return valves field supply are correctly installed in the system 8
- Make sure that the room thermostat th is not frequently turned on off 8
- Never set the target leaving water temperature set point on the boiler controller above 80 c 8
- Rotex shall not be held liable for any damage resulting from failure to observe this rule 8
- Space heating application by either the rotex indoor unit or by an auxiliary boiler connected in the system an auxiliary contact decides whether either the rkhbrd indoor unit or the boiler will operate this auxiliary contact can e g be an outdoor temperature thermostat an electricity tariff contact a manually operated contact etc 8
- Space heating with an auxiliary boiler alternating operation 8
- The auxiliary boiler must be integrated in the piping work and in the field wiring according to the illustrations below 8
- Valve in the return water flow of the rkhbrd unit 8
- When using 2 heat sources it is recommended to use a balancing bottle as follows 8
- Design of the hydraulic system 9
- Example of a high external static pressure system 9
- I if the external static pressure of that pump is higher than the external static pressure of the air to water heat pump system please install an additional pump with higher external static pressure in combination with a balancing bottle 9
- I please always check the specifications of the pump of the old unit 9
- Pay special attention to the control of the circulation pump of the auxiliary boiler this pump should not operate simultaneously with the rkhbrd unit a simultaneous operation of both systems will risk the plate heat exchanger of the rkhbrd unit to freeze up 9
- Simultaneous operation of the auxiliary boiler and the rkhbrd unit is not allowed 9
- The pump will adjust its rpm rotations per minute as to control a fixed t between return and leaving water temperature 9
- This external static pressure graph is valid at maximum pump rpm 9
- When designing the hydraulic system always consider the available external static pressure of the rkhbrd unit 9
- When designing the hydraulic system always consult typical application examples on page 2 for references 9
- When replacing an old gas or fuel oil boiler by a air to water heat pump system rkhbrd 9
- Accessories supplied with this unit 10
- Ccessories 10
- Main components 10
- Verview of the indoor unit 10
- Functional diagram 11
- Switch box main components 11
- Dimensions and service space 12
- Inspecting and handling the unit 12
- Installing the indoor unit 12
- Nstallation of the indoor unit 12
- Selecting an installation location 12
- Checking the water circuit 15
- Guidelines for flare connection 15
- Iping connection work 15
- Refrigerant piping work 15
- Water piping work 15
- Calculating the pre pressure of the expansion vessel 16
- Check that the total water volume in the entire water circuit is lower than this value 16
- Check that the total water volume in the installation excluding the internal water volume of the unit is 20 l minimum 16
- Checking the maximum allowed water volume 16
- Checking the water volume and expansion vessel pre pressure 16
- Determine for the calculated pre pressure pg the corresponding maximum water volume using the graph below 16
- Example 16
- If this is not the case the expansion vessel inside the indoor unit is too small for the installation 16
- In critical processes or in rooms with a high heat load though extra water volume might be required 16
- In most applications this minimum water volume will have a satisfying result 16
- Pg h 10 0 bar 16
- The pre pressure pg to be set depends on the maximum installation height difference h and is calculated as below 16
- The unit is equipped with an expansion vessel of 12 litre which has a default pre pressure of 1 bar 16
- To assure proper operation of the unit the pre pressure of the expansion vessel might need to be adjusted and the minimum and maximum water volume must be checked 16
- To determine the maximum allowed water volume in the entire circuit proceed as follows 16
- Using the table and instructions below determine if the expansion vessel pre pressure requires adjustment and determine if the total water volume in the installation is below the maximum allowed water volume 16
- When circulation in each space heating radiator loop is controlled by remotely controlled valves it is important that this minimum water volume of 20 l is kept even if all the valves are closed 16
- Connecting the water circuit 17
- Harging water 17
- Method for adding water 17
- Precautions when connecting field piping and regarding insulation 17
- Setting the pre pressure of the expansion vessel 17
- Internal wiring parts table 18
- Lectrical wiring work 18
- Precautions on electrical wiring work 18
- Switch box components list 18
- After finishing the electric work confirm that each electric part and terminal inside the electric parts box is connected securely 19
- Cable requirements 19
- Connection of the indoor unit power supply and communication cable s 19
- I be sure to route all cables between the unit side plate and the wiring retention bar as shown in figure 3 19
- I cable tie mountings are provided at the wiring entries of the switch box see switch box main components on page 8 19
- I install the indoor and outdoor unit power supply cable and communication cable s at least 1 meter away from televisions or radios to prevent image interference or noise depending on the radio waves a distance of 1 meter may not be sufficient to eliminate the noise 19
- I most field wiring on the indoor unit side is to be made on the terminal block inside the switch box to gain access to the terminal blocks remove switch box service panel refer to the unit switch box cover for instructions how to remove this panel and gain access to the inside of the switch box 19
- I the electrical connection diagram can be found on the inside of the switch box cover 19
- I to avoid receiving electric noise be sure that the cables are put in the correct bundle and routed in the correct bundle tray as shown in figure 3 19
- I when wiring route the cable bundles that are outside the unit away from each other by at least 25 mm in order to avoid receiving electric noise external noise 19
- Open the switch box cover 19
- Open the unit and put the switch box in front of the unit as described in opening the unit on page 36 19
- Procedure 19
- Ps power supply see figure 3 lv low voltage see figure 3 hv high voltage see figure 3 19
- R5t leaving water thermistor r6t discharge thermistor r7t liquid thermistor r134a r8t fin thermistor rc a p receiver circuit s1ph high pressure switch s1s benefit kwh rate power supply contact field supply s3s mixing station input 1 field supply s4s mixing station input 2 field supply ss1 a1p selector switch emergency ss1 a2p selector switch master slave ss1 a7p selector switch optional tc a p transmitter circuit t1r t2r a p diode bridge t3r power module v1c v8c ferrite core noise filter v1c v12c ferrite core noise filter x1m x3m terminal block x1y x4y connector x m a p terminal block on pcb optional y17r 4 way valve z1f z5f a p noise filter 19
- Select all cables and wire sizes in accordance with relevant local and national regulations 19
- System overview of field wiring 19
- Using the appropriate cable connect the power supply and communication cable s to the appropriate terminals as shown on the wiring diagram and according to figure 3 19
- V17 models only y17 models only 19
- Connection to a benefit kwh rate power supply 20
- Installation of the remote controller 20
- For v17 unit types only 1 21
- For y17 unit types only 3 21
- In case of benefit kwh rate power supply installation remove the wiring bridges on x2m before installing the normal kwh rate power supply 21
- Possible connections and requirements to connect the equipment to such power supply are illustrated in the figures below 21
- Possible types of benefit kwh rate power supply 21
- When parameter 6 04 1 at the moment that the benefit kwh rate signal is sent by the electricity company that contact will open and the unit will go in forced off mod 21
- When parameter 6 04 2 at the moment that the benefit kwh rate signal is sent by the electricity company that contact will close and the unit will go in forced off mod 21
- When the indoor and outdoor unit are connected to a benefit kwh rate power supply the voltage free contact of the receiver controlling the benefit kwh rate signal of the electricity company must be connected to clamps 7 and 8 of x3m as illustrated in the figure above 21
- Field settings 22
- Pre operation checks 22
- Up and configuration 22
- Detailed description 23
- Procedure 23
- In the following tables both methods on how to interpret the schedule timer are shown 24
- Off on on 24
- Operation example schedule timer based on on off instruction 24
- Operation example schedule timer based on temperature set points 24
- When setback function is enabled the setback operation will have priority over the scheduled action in the schedule timer 24
- When setback function is enabled the setback operation will have priority over the scheduled action in the schedule timer if on instruction is active if off instruction is active this will have priority over the setback function at any time the off instruction will have the highest priority 24
- Do not forget to restore the field setting e 04 to the default value when commissioning is finished 29
- I e 04 2 high pump speed operation if you select e 04 1 or 2 and 6 00 1 the unit will activate the domestic hot water 3 way valve this function is a helpful feature to get all air removed out of the system as well in space heating as in domestic hot water heating 29
- On off 29
- Reheat operation 29
- Remote controller leaving water temperature control 29
- See chapter final check on page 34 for more information 29
- Simultaneous demand of space heating and domestic water heating 29
- Storage operation 29
- When requesting space heating and domestic water heating reheat at the same time the domestic water will be heated till maximum reheat temperature then space heating will start again 29
- When requesting space heating and domestic water heating storage at the same time domestic water will be heated according to running timer then space heating will start again according to running timer then domestic water heating will start again according to running timer this will continue till storage set point is reached 29
- When the reheat temperature is reached the further heat up till storage temperature of the domestic hot water tank will be decided by the running timers which are programmed by the installer 29
- External room thermostat 30
- On off 30
- Reheat operation 30
- Storage operation 30
- When requesting space heating and domestic water heating reheat at the same time the domestic water will be heated till maximum reheat temperature then space heating will start again 30
- When requesting space heating and domestic water heating storage at the same time domestic water will be heated according to running timer then space heating will start again according to running timer then domestic water heating will start again according to running timer this will continue till storage set point is reached 30
- When the reheat temperature is reached the further heat up of the domestic hot water tank will be decided by the external room thermostat thermo conditions and running timers which are programmed by the installer 30
- On off 31
- Reheat operation 31
- Remote controller room temperature control 31
- Storage operation 31
- When requesting space heating and domestic water heating reheat at the same time the domestic water will be heated till maximum reheat temperature then space heating will start again 31
- When requesting space heating and domestic water heating storage at the same time domestic water will be heated but as soon as the room temperature drops 3 c from set point space heating will start till 0 c above set point then domestic water will be heated again till storage set point 31
- When the reheat temperature is reached the further heat up till storage temperature of the domestic hot water tank will be decided by the remote controller room thermostat in order to prevent the room temperature to drop too much 31
- Multiple set point control 32
- Field settings table 35
- Final check 37
- Inal check and test run 37
- Procedure for domestic water heating 37
- Procedure for space heating 37
- Temperature read out mode 37
- Test run 37
- Aintenance and service 38
- Checks 38
- General guidelines 38
- Maintenance activities 38
- Roubleshooting 38
- General symptoms 39
- I make sure to always fix the cover with the screws when removing the switch box 39
- I make sure to switch off all power supplies before removing the switch box from the unit 39
- I parts inside the unit can be hot and burning is possible 39
- I to facilitate access to the air purge valve thermal cut out 3 way valve thermistors field wiring duct the top decoration panel of the unit can be removed by removing the 2 screws at the rear and then unhitch the panel both the drain plates can be removed 39
- I to gain access to the indoor unit at the front side the total switch box can be removed from the unit 39
- Loosen the front screws and unhitch the total switch box 39
- Opening the unit 39
- Switch off all power supply also outdoor unit power supply etc before removing the switch box service cover 39
- The switch box can now be placed just before the indoor unit the compressor cable located at the backside of the unit can be untied to place the switch box further away from the unit 39
- To remove the front decoration panel remove the 2 bottom screws and then unhitch the panel 39
- A list of all errors and corrective actions can be found in the table below 40
- Error codes 40
- In case this procedure for resetting the safety is not successful contact your local dealer 40
- Reset the safety by pushing the button 40
- When a safety device is activated the user interface led will be flashing and an error code will be displayed 40
- Electrical specifications 41
- Nit specifications 41
- Technical specifications 41
- General overview and guide to start up the unit 42
- Domestic water heating 43
- Simultaneous demand of space heating and domestic water heating 44
- Irrtum und technische änderungen vorbehalten 04 2015 48
- P403581 1b 48
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