Carrier AQUASnap 30RB Installation, Operation & Maintenance Instructions Manual

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Carrier AQUASnap 30RB Installation, Operation & Maintenance Instructions Manual Manual pdf 27 page image

27English14.3 - expansion vessel (volume calculation)An expansion vessel has to be added in the water loopwith 30RB008X9 30RB012X9 30RB015X9.The capacity of the internal expansion vessel fitted in30RB008-9, 30RB012-9 30RB015-9 is 2 liters:If water loop content is higher than specified in theinstallation manual, an additional expansion vessel has tobe added.The expansion volume can be calculated using thefollowing formula.1530RB8BUFSMPPQDIBSHJOH TZTUFNDMFBOJOHBOE8BUFS$IBSBDUFSJTUJDT 'JH&YQBOTJPOWFTTFM 7PMVNFDBMDVMBUJPO'JH Loosen 2 turns for proper ventingCharge the water loop, with water, until the pressure on theIZESPVOJUSFBET.1B CBS Water pump is forced on. Loosen the cap of the air purgevalve to purge air from the water circuit. If air remains in thesystem the system will not operate correctly.5IFJOTUBMMFSDBOWFSJGZJGUIFXBUFSöMMPQFSBUJOHJTDPNQMFUFEXIFOøPXTXJUDITUBUVTJT0/UPMFUUIFcompressor start.When completing the Test Run, during the commissioning ofthe system, the water pressure in the system may drop below1,5 bar. In this event please add more water to the system.In the case of a new installation, or cleaning the circuit, it isnecessary to perform a preventive cleaning of the system.An expansion vessel has to be added in the water loop with30RB008X9 30RB012X9 30RB015X9.5IFDBQBDJUZPGUIFJOUFSOBMFYQBOTJPOWFTTFMöUUFEJO30RB008-9, 30RB012-9 30RB015-9 is 2 liters:*GXBUFSMPPQDPOUFOUJTIJHIFSUIBOTQFDJöFEJOUIFinstallation manual, an additional expansion vessel has tobe added.The expansion volume can be calculated using thefollowing formula.Where:7 /FDFTTBSZUPUBMWFTTFMDBQBDJUZ -Ⱦ 8BUFSFYQBOTJPODPFóDJFOUBUBWFSBHFIPUXBUFSUFNQFSBUVSFVs: Total water volume in the closed system (Do not includeHot Water Cylinder)1 4ZTUFNQSFTTVSFBUUBOLTFUUJOHQPTJUJPO .QB@BCT 1JQFJOOFSQSFTTVSFEVSJOHQVNQPQFSBUJPOCFGPSFheating device operates = water supply pressure)1 .BYJNVNQSFTTVSFVTFEEVSJOHPQFSBUJPOBUUBOLTFUUJOHposition (Mpa_abs*=safety valve setting pressure)* The absolute pressure valve (abs.) is obtained by adding theBUNPTQIFSJDQSFTTVSF .1B CBS UPUIFHBVHFQSFTTVSFThe initial pressure of this expansion Vessel is 0.1Mpa (1 bar).The release pressure of the safety valve is 0.3Mpa (3 bar).8BUFSUFNQFSBUVSFBOEFYQBOTJPODPFóDJFOU Ⱦ8BUFSUFNQFSBUVSF ¡$ &YQBOTJPOSBUF Ⱦ0 0.00024 0.00005 0.000010 0.000315 0.000820 0.001725 0.002930 0.004335 0.005040 0.007845 0.0100Example: Maximum water temperature 20°C, initial water charge 0.2MPa and system volume 200litres. The calculated Vessel capacity is: )1.03.0()1.02.0(12000.001736.1<=211 PPVsV<= εWhere:V: Necessary total vessel capacity (L)ε: Water expansion coefficient at average hot watertemperatureVs: Total water volume in the closed system (Do notinclude Hot Water Cylinder)P1: System pressure at tank setting position (Mpa_abs*).(Pipe inner pressure during pump operation beforeheating device operates = water supply pressure)P2: Maximum pressure used during operation at tanksetting position (Mpa_abs*=safety valve settingpressure)* The absolute pressure valve (abs.) is obtained by adding the atmosphericpressure (0,1 MPa (1 bar)) to the gauge pressure.The initial pressure of this expansion Vessel is 0.1Mpa(1 bar).The release pressure of the safety valve is 0.3Mpa(3 bar).Water temperature and expansion coefficient (ε)Water temperature (°c) expansion rate (ε)0 0.00024 0.00005 0.000010 0.000315 0.000820 0.001725 0.002930 0.004335 0.005040 0.007845 0.0100Example: Maximum water temperature 20°C, initialwater charge 0.2MPa and system volume 200 litres.The calculated Vessel capacity is:1530RBThe expansion volume can be calculated using thefollowing formula.1 .BYJNVNQSFTTVSFVTFEEVSJOHPQFSBUJPOBUUBOLTFUUJOHposition (Mpa_abs*=safety valve setting pressure)* The absolute pressure valve (abs.) is obtained by adding theBUNPTQIFSJDQSFTTVSF .1B CBS UPUIFHBVHFQSFTTVSFThe initial pressure of this expansion Vessel is 0.1Mpa (1 bar).The release pressure of the safety valve is 0.3Mpa (3 bar).8BUFSUFNQFSBUVSFBOEFYQBOTJPODPFóDJFOU Ⱦ8BUFSUFNQFSBUVSF ¡$ &YQBOTJPOSBUF Ⱦ0 0.00024 0.00005 0.000010 0.000315 0.000820 0.001725 0.002930 0.004335 0.005040 0.007845 0.0100Example: Maximum water temperature 20°C, initial water charge 0.2MPa and system volume 200litres. The calculated Vessel capacity is: )1.03.0()1.02.0(12000.001736.1<=211 PPVsV<= ε14.4 - periodic Inspection Itemsunit frequency periodic inspection detailsnsulation measurement (Power source circuit/Compressor)Annually Insulation measurement with a mega testerOperation check Annually Cooling operation check with remote controller.Refrigerant leakage/ Water leakage inspection. Annually Visual inspection and check with a leak tester: No leakage must be found.Water heat exchanger inspection (Internal dirt andclogging)Annually Checking for water dirtiness in a closed cycle, Cleaning.Inlet / Outlet water temperature measurement Annually Temperature measurement: Temperature measurement during an operation.Circulation pump inspection Annually No leakage or abnormal noise must be found (Replacement every 10 years: Charged).Automatic air purge valve inspection Annually Water leakage, Air vent.Expansion vessel Annually Visual check for charge pressure abnormality, water leakage, or corrosion.Heater assembly Annually Check for appearance damage, deformation, or loose terminalFlow switch Annually Operation check while runningSafety valve Annually Water leakage, Appearance check, Drainage check.Power source measurement (No-load voltage/ Ratedoperation)Annually Electronic voltage measurement.Air heat exchanger inspection (Dirt and clogging) Annually Visual inspection, Clear cloggingFan inspection (Scratch, damage) Annually Check for scratches or damages to the fan or abnormal motor sound