Air to Water Heat Pumps 30RH 040_240

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Air to Water Heat Pumps 30RH

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<ul><li><p>30RH 040-240 "A"</p><p>Reversible Air-to-Water HeatPumps with IntegratedHydronic ModuleNominal cooling capacity 37-213 kWNominal heating capacity 39-227 kW</p><p>50 Hz</p><p>Installation, operation and maintenance instructions</p><p>AQUASNAP</p><p>For the operation of the control please refer tothe Pro-Dialog Control manual for the</p><p>30RA/RY - RH/RYH "A" series</p><p>Carrier is participating in the Eurovent Certification Programme. Products are as listed in the Eurovent Directory of Certified Products.</p></li><li><p>2The drawings in this document are for illustrative purposes only and is not part of any offer for sale or contract.</p></li><li><p>3CONTENTS</p><p>1 - INTRODUCTION ....................................................................................................................................................................... 41.1 - Installation safety considerations ............................................................................................................................................... 41.2 - Equipment and components under pressure .............................................................................................................................. 41.3 - Maintenance safety considerations ............................................................................................................................................ 51.4 - Repair safety considerations ...................................................................................................................................................... 5</p><p>2 - PRELIMINARY CHECKS ........................................................................................................................................................ 72.1 - Check equipment received ......................................................................................................................................................... 72.2 - Moving and siting the unit ......................................................................................................................................................... 7</p><p>3 - DIMENSIONS/CLEARANCES ................................................................................................................................................. 9</p><p>4 - PHYSICAL DATA ....................................................................................................................................................................11</p><p>5 - ELECTRICAL DATA ..............................................................................................................................................................11</p><p>6 - APPLICATION DATA............................................................................................................................................................. 136.1 - Unit operating range ................................................................................................................................................................ 136.2 - Heat exchanger water flow rates .............................................................................................................................................. 136.3 - Minimum water flow rate ........................................................................................................................................................136.4 - Maximum heat exchanger water flow rate ............................................................................................................................... 136.5 - Water loop volume ................................................................................................................................................................... 136.6 - 30RH unit operating range at full and part load ...................................................................................................................... 146.7 - Pressure drop in the plate heat exchangers .............................................................................................................................. 14</p><p>7 - ELECTRICAL CONNECTION .............................................................................................................................................. 157.1 - Power supply ............................................................................................................................................................................ 167.2 - Voltage phase imbalance (%) ..................................................................................................................................................16</p><p>8 - RECOMMENDED WIRE SECTIONS ................................................................................................................................... 178.1 - Field control wiring .................................................................................................................................................................. 17</p><p>9 - WATER CONNECTIONS ....................................................................................................................................................... 189.1 - Operating precautions and recommendations ..........................................................................................................................189.2 - Hydronic connections ..............................................................................................................................................................199.3 - Frost protection ........................................................................................................................................................................ 19</p><p>10 - NOMINAL SYSTEM WATER FLOW CONTROL ........................................................................................................... 2110.1 - Water flow control procedure ................................................................................................................................................ 2110.2 - Pump curve and water flow control as a function of the system pressure drops ................................................................... 2210.3 - Pump pressure/flow rate curves ............................................................................................................................................. 2210.4 - Available static system pressure ............................................................................................................................................23</p><p>11 - START-UP ............................................................................................................................................................................... 2411.1 - Preliminary checks ................................................................................................................................................................. 2411.2 - Actual start-up ........................................................................................................................................................................ 2411.3 - Operation of two units in master/slave mode ........................................................................................................................ 2411.4 - Supplementary electric resistance heaters .............................................................................................................................. 25</p><p>12 - MAINTENANCE ....................................................................................................................................................................2612.1 - Maintenance of the refrigerant circuit .................................................................................................................................... 2612.2 - Electrical maintenance ........................................................................................................................................................... 2812.3 - Condenser coil ........................................................................................................................................................................ 29</p><p>13 - AQUASNAP MAINTENANCE PROGRAM ....................................................................................................................... 2913.1 - Maintenance schedule ............................................................................................................................................................ 2913.2 - Description of the maintenance operations ............................................................................................................................ 30</p><p>14 - START-UP CHECKLIST FOR 30RH HEAT PUMPS ....................................................................................................... 31</p></li><li><p>41 - INTRODUCTION</p><p>Prior to the initial start-up of the 30RH units, the peopleinvolved in the on-site installation, start-up, operation, andmaintenance of this unit should be thoroughly familiar withthese instructions and the specific project data for theinstallation site.</p><p>The 30RH heat pumps are designed to provide a very highlevel of safety during installation, start-up, operation andmaintenance. They will provide safe and reliable service whenoperated within their application range.</p><p>This manual provides the necessary information to familiarizeyourself with the control system before performing start-upprocedures. The procedures in this manual are arranged in thesequence required for machine installation, start-up, operationand maintenance.</p><p>Be sure you understand and follow the procedures and safetyprecautions contained in the instructions supplied with themachine, as well as those listed in this guide.</p><p>Earthquake resistance has not been verified for standard units.</p><p>1.1 - Installation safety considerations</p><p>This machine must be installed in a location that is not accessibleto the public and protected against access by non-authorisedpeople.</p><p>After the unit has been received, when it is ready to be installedor reinstalled, and before it is started up, it must be inspectedfor damage. Check that the refrigerant circuit(s) is (are) intact.Ensure especially that no components or pipes have shifted(e.g. following a shock). If in doubt, carry out a leak tightnesscheck and verify with the manufacturer that the circuit integrityhas not been impaired. If damage is detected upon receipt,immediately file a claim with the shipping company.</p><p>Do not remove the skid or the packaging until the unit is in itsfinal position. These units can be moved with a fork lift truck,as long as the forks are positioned in the right place anddirection on the unit.</p><p>The units can also be lifted with slings, using only the desig-nated lifting points marked at the four corners at the unit base.</p><p>These units are not designed to be lifted from above. Useslings with the correct capacity, and always follow the liftinginstructions on the certified drawings supplied with the unit.</p><p>Safety is only guaranteed, if these instructions are carefullyfollowed. If this is not the case, there is a risk of materialdeterioration and injuries to personnel.</p><p>Never cover any safety devices.</p><p>This applies to the globe valve in the water circuit and theglobe valve(s) in the refrigerant circuit(s).</p><p>Ensure that the valves are correctly installed, before operatingthe unit.</p><p>In certain cases the globe stops are installed on ball valves.These valves are factory-supplied lead-sealed in the openposition. This system permits isolating and removing theglobe stop for checking and replacing. The globe stops aredesigned and installed to ensure protection against fire risk.Removing the globe stops is only permitted if the fire risk isfully controlled and the responsibility of the user.</p><p>All factory-installed globe valves are lead-sealed to preventany calibration change. If the globe valves are installed on areversing valve (change-over), this is equipped with a globevalve on each of the two outlets. Only one of the two glovevalves is in operation, the other one is isolated. Never leavethe reversing valve in the intermediate position, i.e. with bothways open (locate the control element in the stop position). Ifa globe stop is removed for checking or replacement pleaseensure that there is always an active globe stop on each of thereversing valves installed in the unit.</p><p>Provide a drain in the discharge circuit, close to each valve,to avoid an accumulation of condensate or rain water.</p><p>The safety valves must be connected to discharge pipes. Thesepipes must be installed in a way that ensures that people andproperty are not exposed to refrigerant leaks. These fluidsmay be diffused in the air, but far away from any building airintake, or they must be discharged in a quantity that isappropriate for a suitably absorbing environment.</p><p>Periodic check of the globe valves: See paragraphMaintenance safety considerations.</p><p>Accumulation of refrigerant in an enclosed space candisplace oxygen and cause asphyxiation or explosions.</p><p>Inhalation of high concentrations of vapour is harmful andmay cause heart irregularities, unconsciousness, or death.Vapour is heavier than air and reduces the amount of oxygenavailable for breathing. These products cause eye and skinirritation. Decomposition products are hazardous.</p><p>1.2 - Equipment and components under pressure</p><p>These products incorporate equipment or components underpressure, manufactured by Carrier or other manufacturers. Werecommend that you consult your appropriate national tradeassociation or the owner of the equipment or components underpressure (declaration, re-qualification, retesting, etc.). Thecharacteristics of this equipment/these components are givenon the nameplate or in the required documentation, suppliedwith the products.</p><p>Do not introduce high static and dynamic pressure comparedwith the existing operating pressures - either service or testpressures in the refrigerant circuit or in the heat transfer circuit,especially:- limiting the elevation of the condensers or evaporators- taking the circulating pumps into consideration.</p></li><li><p>51.4 - Repair safety considerations</p><p>All installation parts must be maintained by the personnel incharge, in order to avoid material deterioration and injuries topeople. Faults and leaks must be repaired immediately. Theauthorized technician must have the responsibility to repair thefault immediately. Each time repairs have been carried out tothe unit, the operation of the safety devices must be re-checked.</p><p>If a leak occurs or if the refrigerant becomes polluted (e.g. by ashort circuit in a motor) remove the complete charge using arecovery unit and store the refrigerant in mobile containers(careful in case the refrigerant decomposes due to high tempera-ture increases, as the decomposition products are dangerous).</p><p>If a leak occurs, evacuate all refrigerant, repair the leak detectedand recharge the circuit with the tot...</p></li></ul>

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