MAKING MODERN LIVING POSSIBLE User Guide Domestic heat pumps DHP-A Opti DHP-C Opti DHP-C Opti W/W DHP-H DHP-H Opti DHP-H Opti Pro/Opti Pro + DHP-L DHP-L Opti DHP-L Opti Pro/Opti Pro + www.heating.danfoss.
The English language is used for the original instructions. Other languages are a translation of the original instructions.
User Guide Domestic heat pumps Table of Contents 1 Foreword 2 Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 About your heat pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Control system 5 Settings and adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
User Guide 1 Domestic heat pumps Foreword Buying a heat pump from Danfoss is an investment in a better future. A Danfoss heat pump is classed as a renewable energy source, which means that it is considerate of our environment. It is a safe and convenient solution that provides heating, hot water and, in certain cases, cooling for your home at a low cost. We thank you for the confidence that you have shown in us by buying a heat pump from Danfoss .
User Guide Domestic heat pumps 2 Safety precautions 2.1 Important information Caution The front of the heat pump must only be opened by qualified installers. Caution This product is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge unless they have been given supervision or instructions concerning the use of the product by a person responsible for their safety.
User Guide 2.3 Domestic heat pumps System modifications Only qualified installers may carry out modifications on the following components: ▪ ▪ ▪ ▪ The heat pump unit The pipes for the refrigerant, brine and water The power supply The safety valves Do not carry out construction installations that may affect the operational safety of the heat pump. 2.4 Safety valves ▪ Never block the connection to a safety valve’s overflow pipe.
User Guide Domestic heat pumps 3 About your heat pump 3.1 Heat pump components The heat pump is a complete heat pump installation for heating and hot water. Certain models have an integrated water heater. Using the TWS (Tap Water Stratification) technology, more effective heat transfer and efficient layering of the water in the water tank is achieved. The heat pump is equipped with control equipment, which is operated using a control panel.
User Guide Domestic heat pumps ▪ The defrosting sequence starts when the temperature of the brine reaches its set parameter for defrosting. ▪ The compressor is stopped so that the defrosting sequence does not load the compressor unnecessarily. But the compressor is not stopped when it produces hot water because the water heater is cooled during the defrosting sequence. The fan on the outdoor unit is stopped to reduce the duration of the defrosting sequence.
User Guide 3.5 Domestic heat pumps Water heater Danfoss heat pumps DHP-H and DHP-C are supplied with an integrated 180 litre water heater. They are equipped with a TWS coil, which results in more effective heat transfer and more efficient layering of the water in the water heater.
User Guide 3.6 Domestic heat pumps Auxiliary heating If the heat demand is greater than the heat pump’s compressor capacity, the immersion heater engages automatically in operating mode AUTO. The electrical heater is made up of an electric heating element on the supply line that has two outputs, AUX. HEAT 1 and AUX. HEAT 2, and can be controlled in three steps. DHP-A Opti has three outputs, AUX. HEAT 1, AUX. HEAT 2 and AUX. HEAT 3 and output can be controlled in five steps.
User Guide 4 Domestic heat pumps Control system The heat pump has an integrated control system which automatically calculates the heat demand in the house to ensure that the correct amount of heat is produced and emitted when necessary. The control system is operated using a keypad and information is shown in a display and by an indicator. The information in the display and menus will vary depending heat pump model and connected accessories. N ROOM 1 2 3 20°C NO HEAT DEMAND 3 OPERAT.
User Guide 4.3 Domestic heat pumps Display The display shows information about the heat pump’s operation, status and alarms. Symbols that show the heat pump status: Symbol Meaning COMPRESSOR – Indicates that the compressor is in operation. LIGHTNING BOLT – Indicates that the immersion heater is in operation. The number indicates which additional step is activated. HOUSE – Indicates that the heat pump produces heat for the heating system.
User Guide Message Domestic heat pumps Meaning ADD. HEATER Indicates that there is an auxiliary heater demand. COOLING Displayed when passive cooling is produced. ACTIVE COOLING Displayed when active cooling is produced.. DEFROST X(Y) Displayed when defrosting is active. X shows the actual temperature reached. Y shows at which temperature defrost is complete (applies to DHP-A Opti). 4.
User Guide 5 Domestic heat pumps Settings and adjustments An qualified installer sets the heat pump's basic settings upon installation. Described below are the adjustments that may be made by the installer/user. Do not change controller settings without firstly understanding the impact of the change. Make a note of the default setting. N 5.1 Setting the operating mode 1. Open the OPERAT. menu in the INFORMATION menu. The asterisk shows the current selection. 2.
User Guide 5.2 Domestic heat pumps Adjusting the indoor temperature The indoor temperature is adjusted by changing the heat pump’s heat curve. This curve is the control system’s tool for calculating the correct supply temperature of water for the heating system. The heat curve is a graph that compares the outdoor temperature with the supply temperature. A colder outdoor temperature results in more heat being supplied to the heating system. The heat curve will be adjusted during installation.
User Guide Domestic heat pumps High temperatures in an underfloor heating system can damage parquet floors. N Adjust the heat curve in the HEAT CURVE menu as follows: HEAT CURVE CURVE MIN MAX CURVE 5 CURVE 0 CURVE -5 HEAT STOP 40˚C 22˚C 70˚C 0˚C 0˚C 0˚C 17˚C 1. Open the HEAT CURVE menu in the INFORMATION menu. 2. Select the parameter required using the + or – button. 3. Open the parameter by pressing the right button once. 4. Increase or reduce the value with the + or - button. 5.
User Guide 5.4 Domestic heat pumps Reading the operating time HEAT PUMP shows the total time in hours that the heat pump has been in operation since installation. OPERAT. TIME HEAT PUMP AUX. HEAT 1 AUX. HEAT 2 HOT WATER 0H 0H 0H 0H AUX. HEAT 1 and 2 refer to the immersion heater power stage 3 kW and 6 kW. HOT WATER is included in the total HEAT PUMP time and indicates the number of hours that hot water production has been running since installation. 5.
User Guide Domestic heat pumps 6 Regular checks 6.1 Operation check During normal operation, the alarm indicator is lit green continuously to show that everything is OK. When the alarm is triggered, it flashes green at the same time as a text message is shown in the display. ALARM LOW PRESSURE ERROR Regularly check the alarm indicator to ensure that the installation is working correctly.
User Guide 6.3 Domestic heat pumps Check the water level in the heating circuit The system pressure of the installation must be checked once a month. The external manometer must show a value between 1-1.5 bar. If the value is below 0.8 bar when the water in the heating system is cold, the water must be topped up (applies to unvented systems). You can use normal tap water when topping up the heating system.
User Guide 6.5 Domestic heat pumps Checking safety valves The safety valves for the installation must be checked at least four times a year to prevent lime deposits clogging the mechanism. The safety valve of the water tank protects the enclosed heater against over pressure. It is mounted on the cold water inlet line. If the safety valve is not checked regularly, there is a risk that the water tank may sustain damage.
User Guide 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. Domestic heat pumps Switch off the heat pump. For the brine circuit filter - remove the insulation around the filler cock. Turn the shut-off tap (A) to the closed position. Unscrew the cover (B) and remove it. Remove the filter. Rinse the filter (C). Reinstall the filter. Check that the O-ring (D) on the cover is not damaged. Screw the cover back into place. Turn the shut-off tap to the open position.
User Guide 7 Domestic heat pumps Default setting in the controller The first column in the table below shows the parameters that can be adjusted by the User. The second column shows the factory settings, and the third column shows the settings made by the installer in connection with installation of the heat pump. 22 Parameter Factory setting ROOM 20°C OPERAT.
User Guide 8 Domestic heat pumps Checklist Location Surface adjustment Drainage Pipe installation, hot and cold side Pipe connections in accordance with the diagram Flexible hoses Expansion and bleed vessel Filter, hot and cold side Pipe insulation Open radiator valves Leak test, hot and cold side Electrical Installation Circuit breaker Fuse Positioning of the outdoor sensor Commissioning Bleeding, hot and cold side Settings control system Manual test components Manual test different operating conditions
User Guide 9 Domestic heat pumps Installation carried out by: Piping installation ▪ Date: ▪ Company: ▪ Name: ▪ Tel. No: Electrical Installation ▪ Date: ▪ Company: ▪ Name: ▪ Tel. No: System adjustment ▪ Date: ▪ Company: ▪ Name: ▪ Tel.
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User Guide 26 Domestic heat pumps VUGFE202 Danfoss Heating Solutions
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User Guide Domestic heat pumps Danfoss Heat Pumps Box 950 671 29 ARVIKA Phone +46 570 81300 E-mail: dhpinfo@danfoss.com Internet: www.heating.danfoss.com Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed.
