Danfoss DHP-AL Installation And Service Instructions Manual
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Danfoss DHP-AL Installation And Service Instructions Manual

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Installation and service
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DHP-AL
VMBME102

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  • Page 1 Installation and service instructions DHP-AL VMBME102...

  • Page 3: Table Of Contents

    Table of contents Installation instructions ....5 Service instructions ......23 1 Important information/Safety regulations ....5 11 The heat pump ......... . . 23 11.1 General function description .

  • Page 5: Installation Instructions

    The heat pump must be placed in an area with a floor drain. refrigerant (for the amount of refrigerant see manufacturer’s plate) through the service valves. All warranties from Danfoss AS are void ⚠ The heat pump must be located on a stable base. The base...

  • Page 6: Heat Pump Information

    Heat pump information Dimensions and connections The brine pipes can be connected on either the left or right-hand sides of the heat pump. Delivery check 1. Check that there is no transport damage. The heat pump is packaged in cardboard. 2.
  • Page 7 Components Left view Front view Right view Figure 3: Components. Position Name Heating system supply pipe Brine, supply during normal operation Return pipe, heating system Auxiliary heating, immersion heater Electrical panel Heating system circulation pump Evaporator Circulation pump coolant system Exchange valve, heating system Drying filter Expansion valve...

  • Page 8: Heat Pump Control Panel

    Heat pump control panel Space requirement The heat pump control panel consists of a display, four control but- To facilitate the installation and subsequent testing and mainte- tons and an indicator. nance it is recommended that there is sufficient free space around the heat pump in accordance with the following dimensions: –...

  • Page 9: Space Requirement Around The Outdoor Unit

    Drilling holes for brine pipes in a newly-built house, this has normally been taken into account during construction, and the joists where the heat pump will be located have been reinforced. Always check that this has been car- ⚠ NOTE! Ensure that the holes for the insert pipes are posi- ried out when installing into a newly-built house.

  • Page 10: Unpacking And Installation

    Unpacking and installation Removing the front cover ⚠ NOTE! Do not damage the electrical wiring for the control system when the front cover is removed! Setting up To install the heat pump and water heater, the front covers must be Both the heat pump and water heater are prepared to be connected removed.

  • Page 11: Installing The Defroster Sensor

    Figure 15: Front cover preparations. Screw the three screws (4) into place from underneath in the pre-drilled holes at the front edge of the outdoor unit. Hook the lower edge of the front cover onto the three protrud- Figure 18: Finishing by installing the cover. ing screws.

  • Page 12: Piping Installation

    Piping installation • Ensure that the piping installation follows the dimension and connection diagrams in section “Heat pump information”. ⚠ NOTE! To prevent leaks ensure that there are no stresses in • Piping installation must be carried out in accordance with appli- the connecting pipes! cable local rules and regulations.

  • Page 13: Safety Valves

    Flexible hoses are available to purchase 2. Connect the return pipe with a flexible hose connection and from Danfoss AS. The following figures show how appropriate and with all the necessary components including a filter.

  • Page 14: Electrical Installation

    • To measure the outdoor temperature as accurately as possible, Terminal block the sensor must be positioned 2/3 of the way up the facade on Space for Thermia/Danfoss Online houses up to three storeys high. For higher buildings, the sensor Warning decal should be positioned between the second and third storeys.

  • Page 15: Changing The Language In The Control Computer

    Connecting the exchange valve • If the sensor cable is connected through a pipe, the pipe must be sealed so that the sensor is not affected by outgoing air. Then connect the sensor to the heat pump control system in accordance with the instructions below.

  • Page 16: Brine Installation

    Brine installation Connection diagram Pipe connections in image: Brine out, during defrosting Brine in Brine out, normal operation Safety valve 1.5 bar Brine in, during defrosting 10 Brine out, during defrosting 14 Brine expansion line when outdoor unit is positioned at high level Moved supply pipe sensor for the brine system Alternative 2...

  • Page 17: Installing Brine Pipes

    Installing brine pipes 1. Determine which side of the heat pump brine pipes are to be connected. 2. Route the return pipe through the return pipe rubber bellows on the side of the heat pump. 3. Install the return pipe with all the accompanying components. Remember to install the filler cock with the filter cover turned upwards.

  • Page 18: Bleeding And Post Filling The Brine Circuit

    Installing accessories/additional Bleeding and post filling the brine circuit functions ⚠ NOTE! When topping up, the brine pump must be running. 1. Start the brine pump in the control computer menu SERVICE -> Room temperature sensor MANUAL TEST -> BRINEPUMP, set the value to 1. ⚠...

  • Page 19: Higher Hot Water Temperature

    Higher hot water temperature ⚠ NOTE! Never connect the heat pump to provide a higher temperature unless the heating or hot water systems require it. Higher temperatures increase the load on the heat pump. If necessary, the heat pump can be connected to produce hot- ter water for the heating system and hot water system when it is installed.

  • Page 20: Start Up

    Start up 4. Set the value for MANUAL TEST to 2. ⚠ NOTE! Select position 2 to navigate away from the MANUAL NOTE! Read the safety instructions! TEST menu during ongoing test operation! ⚠ The installation may only be commissioned if the heating system, water heater and brine system have been filled and Test the brine pump bled.

  • Page 21: Installing The

    Starting circulation pumps manually ⚠ NOTE! Risk of burns, the pipe can reach 70-80°C! If any of the circulation pumps do not start, it may need to be helped as follows: Figure 42: Bleed screw location. 1. Open and remove the bleed screw on the front of the pump. Normally a small amount of water comes out when it is removed.

  • Page 22: Handover To Customer

    Handover to customer After installation and test operation, the customer must be informed about their new heat pump installation. Below is a check- list regarding the information that you must give the customer: • The model of the heat pump that has been installed •...

  • Page 23: Service Instructions

    Service instructions The heat pump 11.1 General function description A heat pump utilises the free solar energy found in a natural heat source, such as rock, ground, ground water or air.. The heat pump can be compared to a reversed refrigerator. In a refrigerator, heat is transferred from the inside of the refrigerator to the outside. In a heat pump the heat that is stored in a heat source is transferred to the inside of the house.

  • Page 24: Components

    Components DHP-AL is a heat pump installation for both heating and producing domestic hot water for the home. The heat pump uses outdoor air as a heat source and retrieves energy from the air using an air heat exchanger in a separate outdoor unit.

  • Page 25: Heating

    The figure above shows DHP-AL operating for heating. When heating during the winter months, the outdoor unit’s air heat exchanger is cooled by the energy exchange at the same time as the humidity causes it to become covered in frost. DHP-AL has an automatic function to defrost the air heat exchanger using the produced heat energy.

  • Page 26: Important Parameters

    11.7 Important parameters Heat production - calculating The indoor temperature is adjusted by changing the heat pump’s heat curve, which is the control computer’s tool for calculating what the supply temperature should be for water that is sent out in the heating system. The heat curve calculates the supply temperature depend- ing on the outdoor temperature.
  • Page 27 ROOM If you wish to increase or reduce the indoor temperature, change the ROOM value. The difference between changing the ROOM value and the CURVE value is that the system’s heat curve does not become steeper or flatter if the ROOM value is changed, which the curve becomes if the CURVE value changes, instead the entire heat curve is moved by 3°C for every degree change of the ROOM value.
  • Page 28 maintaining the heat in the basement in the summer is that all radiators have thermostat valves that switch off the heat in the rest of the house. It is extremely important that the heating system and the radiator valves are trimmed correctly. As it is usually the end customers themselves who have to carry out trimming, remember to inform them how to carry it out correctly.
  • Page 29 HYSTERESIS In order to start the heat pump in advance during sudden changes of the heat demand, there is a value, HYSTERESIS, which controls the difference between the actual supply temperature, t and the calculated supply temperature, t . If the difference is the same or greater than the set HYSTERESIS value (x), i.e.

  • Page 30: Control Computer

    Control computer 12.1 Function description A control computer is used to automatically calculate the heat demand in the house where the heat pump is installed and to ensure that the correct amount of heat is produced and emitted where necessary. There are many different values (parameters) that must be referred to during the calculation of the heat demand.

  • Page 31: Display

    12.2 Display The display of the control computer shows information about the heat pump’s operation, status and any alarms, in text form. The status, indicated by symbols, is also shown in the lower section which shows the heat pump’s active process. Operating mode Appears with applicable heat pump operating status text.
  • Page 32 Message Meaning NO DEMAND HEAT Indicates that there is no heating production demand. HIGHPRESS ERROR Alarm that indicates that the high pressure switch has deployed. LOWPRESS ERROR Alarm that indicates that the low pressure switch has deployed. MOTOR P ERROR Alarm that indicates that the motor protection has deployed.

  • Page 33: Menus

    Menus 13.1 Main menu INFORMATION This menu is used to change the heat pump’s operating modes and adjust the heat curve. History and operating times can also be viewed here. Open the menu by pressing the left or right button. The sub menus available in the INFORMATION menu are shown in the following table: Main menu Sub menu...
  • Page 34 Sub menu INFORMATION -> OPERATION Used to select operating mode. Menu selection Meaning Factory setting The installation is off. Any active alarms reset. (OFF) AUTO Automatic operation with both heat pump and auxiliary heater permitted. If the number of power stages for auxiliary heating are set to zero (SERVICE -> AUX. HEAT ->...
  • Page 35 Sub menu INFORMATION -> TEMPERATURE Used to indicate the prevailing temperatures, history and set/calculated values. History can be accessed to view all the values by pressing the right arrow to present a graph of the last 100 measurement points for the set time interval (SERVICE -> INSTALLATION -> LOGTIME). In the event of an alarm, history stops being logged until the alarm is reset by changing the operating mode to OFF.

  • Page 36: Main Menu Service

    13.2 Main menu SERVICE This menu is for use during installation and service to optimise and adjust the operation of the heat pump. Access the menu by holding the left and right arrows in for 3 seconds. The sub menus available in the SERVICE menu are shown in the following table: Main menu Sub menu Selection/settings...
  • Page 37 Sub menu SERVICE -> HOT WATER Used to change the settings for hot water production. Menu selection Meaning Factory setting START Start temperature for hot water production. Shows the actual hot water tem- 40°C (at OUTSIDE AIR perature and the value within brackets indicates the start temperature. temperature of 38°C) (interval: 30°C / 55°C) HOT WATER TIME...
  • Page 38 Sub menu SERVICE -> MANUAL TEST Used to manually test and test operate the heat pump’s components or signal outputs. Menu selection Meaning Factory setting MANUAL TEST Setting options for manual test. 0 = deactivate manual test 1 = activate manual test 2 = activate manual test with option of navigating from the SERVICE menu to check that the temperatures rise.
  • Page 39 Sub menu SERVICE -> INSTALLATION Used for settings that are set during installation Menu selection Meaning Factory setting SWEDISH Language setting for the control computer. SWEDISH (SVENSKA NORSK, SUOMI, DEUTSCH, NEDERLANDS, ENGLISH, FRANCAIS POLSKI DANSK) SYSTEM Sub menu SERVICE -> INSTALLATION -> SYSTEM: NOTE! The menu selec- Menu selection Meaning...
  • Page 40 Sub menu SERVICE -> DEFROST Used to change settings for outdoor unit defrost. Menu selection Meaning Factory setting DEFR CURVE 0 Here, the angle of the defrost curve, starting at an outdoor temperature of -10°C 0°C, can be changed using the right-hand arrow and by either pressing + or – (interval: -15°C / -5°C) (changes the start temperature for defrosting).

  • Page 41: Troubleshooting

    Troubleshooting ⚠ NOTE! This troubleshooting section contains general heat pump information for the whole range and can therefore contain certain points that do not apply to the installed heat pump. 14.1 Alarm list Shown in display in the event of an alarm. To reset alarms 1-5. set the operating mode to OFF or cut the power supply. Message Meaning HIGHPRESS ERROR...

  • Page 42: Operational Problems - Alarm

    14.3 Operational problems – Alarm Problem – Alarm LP (low pressure pressure switch) Cause Troubleshooting Remedy 1. Blocked strainer on the brine Check that the strainer is not blocked. Clean the strainer if necessary. circuit. 2. Air in the brine circuit. Listen for air in the heat pump and brine circuit.
  • Page 43 Cause Troubleshooting Remedy 13. Drying filter blockage. Check the temperature difference above the dry- If the drying filter is sealed, replace it. ing filer. A one degree difference is permissible. If the difference is greater than 1 degree, the filter is blocked.
  • Page 44 Cause Troubleshooting Remedy 7. The operating pressure switch • Incorrect pressure switch installed. Same or If the operating pressure switch does not does not open. higher break pressure than high pressure pressure open, replace it. switch. See marking. • Pressure switch fault, opens at a higher pressure than indicated (mark pressure).
  • Page 45 Problem – Alarm MS (motor protection) Cause Troubleshooting Remedy 1. Phase drop or blown fuse. Check that all phases are present on the If any of the phases are not present, check terminal block for incoming supply. If not, backwards towards the building’s main check the fuses in the cabinet.
  • Page 46 Problem – Incorrect phase sequence Cause Troubleshooting Remedy The incoming phases have the incorrect • If the text ERR PHASE SEQ appears in the If the phases are in the incorrect order, sequence (only applies to 3-phase heat display when the heat pump is powered, switch two incoming phases at the main pumps).
  • Page 47 Problem – Alarm Brine flow low Cause Troubleshooting Remedy 1. Incorrect system selected in the control In the menu SYSTEM, check which is If the incorrect system is selected , change computer. selected. If the system does not contain a flow switch but the control computer is set for the sys- tem with flow switch, this alarm occurs.

  • Page 48: Operational Problem - Leakage

    Cause Troubleshooting Remedy 5. Lack of refrigerant, not enough refriger- Using manometer apparatus and thermom- If cooling is not at the correct level com- ant in the system. eter, check that the unit’s overheating is pared with the specific refrigerant and is correct for the specific refrigerant.

  • Page 49: Operational Problem - Noise

    Cause Troubleshooting Remedy 14. Anti-freeze is forced out of the safety During the winter, water surrounding the To prevent anti-freeze from being forced valve on the expansion tank (brine system). hoses in the borehole can freeze. In some out from the safety valve, you can exchange cases, the ice can push against the hoses the existing expansion tank for a closed slightly.

  • Page 50: Operational Problem - Hot Water

    Problem – Shrieking whistling noise Cause Troubleshooting Remedy 1. Whistling expansion valve. 1. Take overheating readings, adjust to the Check if the noise has stopped, if not, con- recommended value. tinue with point 2. 2. Open and close the valve fully in and out. Continue with point 3.
  • Page 51 Cause Troubleshooting Remedy 4. Start temperature set too high for hot Check that the start temperature is correctly • If the start value is set too high, reduce it water production. set. Should not be set above the factory set to the factory set value.

  • Page 52: Operational Problem - Heating Comfort

    14.7 Operational problem – Heating comfort Problem – Too cold Cause Troubleshooting Remedy 1. The heat pump’s control computer is not Check the ROOM and CURVE and MAX set- Adjust incorrect values in the heat pump’s set/adjusted to the customer’s requirements/ tings.
  • Page 53 Cause Troubleshooting Remedy 9. The external auxiliary heater does not start If an external auxiliary heater is used, check Connect the external auxiliary heater accord- when the heat pump’s control computer that it is correctly installed by test running it ing to the instructions.

  • Page 54: Operational Problem - Miscellaneous

    Problem – irregular indoor temperature Cause Troubleshooting Remedy 1. The heat pump’s control computer Check the ROOM and CURVE, MIN, MAX Adjust incorrect values in the heat pump’s is not set/adjusted to the customer’s CURVE5, CURVE0, CURVE-5 and HEATSTOP control computer. requirements/wishes.
  • Page 55 Problem – Runs on electric heating element Cause Troubleshooting Remedy 1. Operating mode ADD.HEAT If this operating mode is selected, the auxiliary If ADD.HEAT mode is selected and you no longer is selected. heater is used for heating and hot water produc- want it, change to AUTO, the heat pump then con- tion, not the compressor.
  • Page 56 Cause Troubleshooting Remedy 3. The compressor cannot run Check the alarm that is indicated in the display. Rectify the problem and rest the alarm. See the due to an alarm. “Operational problem – Alarm” section. 4. The heat pump has stopped •...
  • Page 57 Cause Troubleshooting Remedy 5. The heat pump’s control Check the ROOM and CURVE and MIN settings. Adjust incorrect values in the heat pump’s control computer is not set/adjusted to computer. the customer’s requirements/ ROOM = Desired indoor temperature. wishes. CURVE = Should be set so that the desired indoor temperature (ROOM) is maintained regardless of the outdoor temperature.
  • Page 58 Cause Troubleshooting Remedy 11. Lack of refrigerant, not Using manometer apparatus and thermometer, If cooling is not at the correct level compared with enough refrigerant in the sys- check that the unit’s overheating is correct for the the specific refrigerant and is too low, there is tem.
  • Page 59 Cause Troubleshooting Remedy 5. Changed conditions. Have • If the heat pump has been dimensioned for a If the heat pump cannot cope with the demand, you increased your heating certain demand and this demand is increased, replace it with one with a higher output or supple- and/or hot water demand? the heat pump might not be able to maintain the ment it with a higher output auxiliary heater.

  • Page 60: Operational Problem - Outdoor Unit

    14.9 Operational problem – Outdoor unit Problem – Noise/loud noise Cause Troubleshooting Remedy 1. Positioning the outdoor unit. Determine whether the outdoor unit can be When positioning the outdoor unit, its moved to a more suitable location. direction does not affect its performance. The outdoor unit does not need to be posi- tioned as close to the heat pump as neces- sary, it can be positioned as far as 30 ”pipe...

  • Page 61: Technical Data

    Technical data DHP-AL Refrigerant type R404A R404A R404A R404A Refrigerant, kg 0.95 1.45 1.40 1.60 Electrical connection, V 400V 3-N 400V 3-N 400V 3-N 400V 3-N Rated max output, comp. kW Compressor+AH 2) 3) 4) Electric heating element, kW 3/6/9/12/15...
  • Page 62 VMBME102...

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