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Summary of Contents for Regulus RTC 6i
- Page 1 Installation and Maintenance Manual RTC 6i Inverter Air-to-Water Heat Pump RTC 6i...
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Page 2: Table Of Contents
3. CONSTRUCTION READINESS & INSTALLATION ............3.1. Scope of supply ....................3.2. Installation preparation and transport ............... 3.3. Minimum distances ................... 3.4. Placement of the heat pump ................3.5. Condensate drain ..................... 3.6. Pipe installation ....................3.7. Electrical wiring ....................3.8. Addressing HP in a cascade ................4. COMMISSIONING ......................4.1. Initial start up ....................5. MAINTENANCE AND SERVICING ................. 5.1. User maintenance ..................... 5.2. Professional maintenance ................. 5.3. Fault diagnosis ....................5.4. Refrigerant circuit diagram ................5.5. Component placement ..................5.6. Internal wiring diagram ..................5.7. Fault conditions and their possible causes ............6. RELATED DOCUMENTATION ..................7. DECOMMISSIONING ..................... 8. RECYCLING / DISPOSAL ....................9. RECORD OF REPAIRS AND INSPECTIONS ..............RTC 6i - www.regulus.eu │... -
Page 3: General Operating Instructions
Do not interfere with the refrigerant circuit or electrical wiring. Service work must only be carried out by an authorised service organisation. A damaged power cable may only be replaced by an authorized service organization. It is forbidden to leave the packaging material within reach of children, as this may pose a danger to them. It is forbidden to tamper with or replace any parts of the equipment without the express permission of the manufacturer. If these instructions are not followed during installation, operation and maintenance of the system, the manufacturer does not feel bound by the terms of the warranty. RTC 6i - www.regulus.eu │... -
Page 4: Technical Data
EU Regulation No. 517/2014 1.1. Sound data (by EN 12 102) Sound power level 57 dB(A) Sound pressure level at 5 m distance 38 dB(A) Sound pressure level at 10 m distance 32 dB(A) 1.2. Energy Efficiency Seasonal space heating energy efficiency 176% Energy Efficiency Class A+++ SCOP 4,47 For low-temperature applications under average climatic conditions RTC 6i - www.regulus.eu │... -
Page 5: Performance Data
0.53 4.10 2.00 0.65 3.06 2 °C 45 °C 55 °C COOLING Air temperature Flow temperature Output [kW] Power input [kW] COP [-] 5.81 2.10 2.77 23 °C 35 °C 12 °C 4.50 1.74 2.59 RTC 6i - www.regulus.eu │... -
Page 6: Heat Pump Pressure Drop
1.4. Heat pump pressure drop 1.5. Dimensions RTC 6i - www.regulus.eu │... -
Page 7: Connection Variants
0.9 m), or at least 30 m of underfloor heating without the possibility to be shut off. 2.2. Connection with a thermal store (combination with other renewable heat sources) The accessories consist of a thermal store for heating only (Regulus PS series), or a combination thermal store with immersed DHW tank (Regulus DUO series), or a thermal store with continuous hot water heating in a stainless steel DHW heat exchanger (Regulus HSK serie This connection is suitable for combining a heat pump with other heat sources, such as biomass boilers, fireplace inserts and stoves with a hydronic heat exchanger, solar thermal systems, solar photovoltaic systems, etc. The thermal store shall be sized... -
Page 8: Construction Readiness & Installation
2 compensators to protect the plate heat exchanger in the heat pump against frost rupture 3.2. Installation preparation and transport The installation must be carried out by a qualified person in accordance with the applicable stan- dards and all regulations concerning occupational safety must be observed. The heat pump shall be transported and stored in an upright position only. Check that the product has not been damaged in transit. Report immediately any transport damage to the carrier and supplier. Transport the unit to the installation site before removing the packaging. Move the product with a pallet truck or forklift if possible. It is possible to use lifting straps tied around the pallet, however only if the packaging (the wooden frame) had not been removed. MIND THE DIFFERENT WEIGHT OF THE RIGHT AND LEFT SIDE OF THE HEAT PUMP! RTC 6i - www.regulus.eu │... -
Page 9: Minimum Distances
Material of surrounding surfaces: avoid using materials with increased sound reflectivity; it is unsuitable, for example, to line the surrounding surfaces with ceramic tiles. ≥ 300 ≥ 300 RTC 6i - www.regulus.eu │... -
Page 10: Placement Of The Heat Pump
(30 mm high) that come with the heat pump from production and replace them with silent blocks designed for brackets (40 mm high). These Wall brackets (code 17458) silent blocks are included in the supply of wall mounting brackets. Level the heat pump with a spirit level so that it is placed perfectly horizontally. RTC 6i - www.regulus.eu │... -
Page 11: Condensate Drain
– the outlet and the space around the pipe must be filled with crushed stone to ensure sufficient condensate drain, the underground section of the pipe can be perforated, b) into the building, in its sewage system – the through-wall passage shall be above the ground and a water trap shall be installed inside (see Fig. below), c) to the building’s drainage system, e.g. downpipe drains or eaves It is recommended to insulate the drain pipe with thermal insulation. P-trap RTC 6i - www.regulus.eu │... -
Page 12: Pipe Installation
300 ppm of chlorides and that the pH value is between 6 and 8. Make sure that the filter with magnet is installed. Avoid using zinc-plated parts that can cause excessive corrosion of the system. RTC 6i - www.regulus.eu │... -
Page 13: Electrical Wiring
Communication: 15 m communication cable LiYCY (TP) 3x2x0.75 mm is part of the controller supply. Power supply: the power cable is not included in the delivery, we recommend using a power cable with a cross-section of 3x2.5 mm , unless otherwise stated in the design. cables connection point 3.8. Addressing HP in a cascade The addressing of the individual heat pumps installed in the cascade is performed via DIP switches 6, 7 and 8 on the JNP401 switch, which is located on the printed circuit board. The default address is 2. The setting options are as follows: Address Address RTC 6i - www.regulus.eu │... -
Page 14: Commissioning
Check the mains voltage at the installation site. Check that the power cable is not damaged and that the terminals on the wiring are properly tightened. - Check the correct wiring of electrical components (circulation pumps, valves, temperature sensors, etc.). Check that the fans rotate freely. Make sure that the unit has unrestricted air access. Check that all protective covers are fitted and secured. Switch on the heat pump through the controller. When the system heats up, carry out a pressure and heating test. These activities should be recorded in a heating test and leak test report. Set all necessary parameters of the control system. Inform the user about the location of switches, circuit breakers and their functions. Inform the user about other safety features and indicators (safety valves, pressure gauges, analogue thermometers, etc.) and their functions. Inform the user about the controller control and user menu. Check the availability of all documentation of the installed devices. the Heat Pump Commissioning Protocol and the heat pump The service provider shall fill in owner shall sign it. RTC 6i - www.regulus.eu │... -
Page 15: Maintenance And Servicing
Warning: Risk of electric shock if live parts are touched! Disconnect the device from the power supply before working on live parts! 5.3. Fault diagnosis If a fault occurs, you should always contact the installation company that installed your sysztem with the heat pump. If the supplier considers that the fault is caused by a material or design defect, the installation company will contact the supplier and repair the defect. In the communication with your installer or heat pump supplier, always report the serial number of the heat pump (indicated on the label on the back of the heat pump and in the Heat Pump Commissioning Protocol). Error messages If the system registers some non-standard condition or fault, the controller is informed. The information about a non-standard condition or fault is shown on the controller display and at the same time, it is available via the controller website. If set, the controller sends an email message about the problem. For more information, please refer to the manual of the respective controller. RTC 6i - www.regulus.eu │... -
Page 16: Refrigerant Circuit Diagram
The fan stops during the defrosting cycle, but the compressor is still running. Melted ice flows into the condensate tray under the heat pump. As soon as defrosting is completed, the fan starts up again and a cloud of fumes formed by moist air may form for a short time. This is a perfectly normal phenomenon that disappears after a few seconds. On frosty days, check for ice in unusual places (heat pump legs, condensate tray, fan, etc.). Possible causes can be: blocked condensate drain piping (e.g. when condensate freezes inside the piping), defective defrosting control, lack of refrigerant (leakage), extreme weather conditions. 5.4. Refrigerant circuit diagram power supply four-way valve compressor heating water out service valve heating water in expansion drying refrigerant plate heat valve filter collector exchanger Heating mode Cooling mode RTC 6i - www.regulus.eu │... -
Page 17: Component Placement
Evaporator sensor Low pressure sensor Compressor heating element 4-way valve coil Condensate drain heating element Four-way valve Suction gas sensor Outer PCB Compressor Hot gas sensor Plate heat exchanger - condenser Installation box Liquid refrigerant sensor PFC condenser Water temperature sensor - inlet High pressure sensor Flow switch High pressure switch Water temperature sensor - outlet Finned heat exchanger - evaporator Outdoor temperature sensor Fan motor Electronic expansion valve Fan propeller Electronic expansion valve coil Condensate tray Electric filter Feet for RTC 6i RTC 6i - www.regulus.eu │... -
Page 18: Internal Wiring Diagram
5.6.Internal wiring diagram POWER SUPPLY COMMUNICATION GREEN/YELLOW HIGH PRESSURE SWITCH SUCTION GAS SENSOR OUTDOOR TEMPERATURE SENSOR REFRIGERANT TEMPERATURE SENSOR HOT GAS SENSOR LOW PRESSURE SENSOR HIGH PRESSURE SENSOR RTC 6i - www.regulus.eu │... -
Page 19: Fault Conditions And Their Possible Causes
If the refrigerant pressure is too high or low, the compressor will stop. The device will restart 5 minutes after the first alarm. If the alarm repeats 3 times in a row, the unit will shut down. Check: • technical condition of the fan and circulation pump • cleanliness of the finned and plate heat exchangers • heating water temperature and flow and return temperature difference Reduction of compressor speed at high refrigerant condensation pressure If the refrigerant pressure is too high, the compressor will reduce the speed. The device will return to normal operation 5 minutes after the first alarm. If the alarm repeats 3 times in a row, the unit will shut down. Check: • technical condition of the fan and circulation pump • cleanliness of the finned and plate heat exchangers • heating water temperature and flow and return temperature difference Compressor warm-up If the compressor has not been running for a long time or if the outdoor temperature is too low, the compressor heater will switch on. This is a normal condition that does not require any intervention. RTC 6i - www.regulus.eu │... - Page 20 • whether the flow and return temperature difference isn’t too big Temperature sensor error Check: • sensor resistance • sensor connection and cable High pressure / low pressure switch error The error message occurs either if the pressure switch is not closed in standby mode, or 2 minutes after the compressor is switched off. Check: • the connection and the correct function of the pressure switch Fan error The fan has not reached the required speed or is not sending a feedback signal. Check: • fan PCB • fan motor • cables RTC 6i - www.regulus.eu │...
- Page 21 • compressor power cable • compressor inverter board for error • the inverter board and its connections Undervoltage / overvoltage of the VDC module Input voltage is too high or low. EEPROM error Turn off the power and use a jumper to connect the JP404 terminals on the outdoor unit PCB. Turn on the power. Turn off the power and remove the jumper on the JP404 terminals. If the error persists, replace the PCB. The outgoing water temperature is too low If the outgoing water temperature in cooling mode is lower than 5 °C, the compressor will switch off. Check: • temperature sensor • water temperature • water flow rate RTC 6i - www.regulus.eu │...
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Page 22: Related Documentation
8. RECYCLING / DISPOSAL Components made of steel, copper and copper alloys shall be handed over to a sorted metal waste collection site. Electronic components such as electronic boards must be handed over to a collection point designated for electrical waste. Warning: Current regulations do not allow refrigerant to escape into the environment. All refrigerant must be professionally extracted by a certified person and handed over to the appropriate collection sites. RTC 6i - www.regulus.eu │... -
Page 23: Record Of Repairs And Inspections
9. RECORD OF REPAIRS AND INSPECTIONS Service company Customer‘s Date Action performed Name, signature and stamp signature RTC 6i - www.regulus.eu │... - Page 24 ©2021 We reserve the right to errors, changes and improvements without prior notice REGULUS spol. s r.o. E-mail: sales@regulus.eu Web: www.regulus.eu...
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