HIdRos WDH Series Technical Manual
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HIdRos WDH Series Technical Manual

Ground source heat pumps
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GROUND SOURCE HEAT PUMPS
WDH
SERIES
TECHNICAL MANUAL

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Summary of Contents for HIdRos WDH Series

  • Page 1 GROUND SOURCE HEAT PUMPS SERIES TECHNICAL MANUAL...
  • Page 2 Ground source heat pumps MTWDHGB REV.072008...
  • Page 3 Ground source heat pumps MTWDHGB REV.072008...
  • Page 4 Ground source heat pumps MTWDHGB REV.072008...

  • Page 5: Table Of Contents

    Ground source heat pumps INDEX INDEX Declaration of conformity page 3 Aim and contents of this manual page 6 How to keep this manual page 6 Graphic symbols page 6 Safety laws page 7 General safety guidelines page 7 Workers’ health and safety page 8 Protective equipment page 8...

  • Page 6: Aim And Contents Of This Manual

    The customer shall store any updated copy of the manual or parts of it delivered by the manufacturer as an attachment to this manual. HIDROS SRL is available to give any detailed information about this manual and to give information regarding the use and the maintenance of its own units.

  • Page 7: Safety Laws

    Ground source heat pumps SAFETY LAWS The units single components or the complete units produced by HIDROS have been designed according to the actual CE and national Directives. For the detailed list of the project technical Directives, refer to the CE declaration enclosed.

  • Page 8: Workers' Health And Safety

    Ground source heat pumps WORKERS’ HEALTH AND SAFETY The European Community has emanated some Directives about worker’s safety and health which the employers have to respect and make the others respect. For the detailed list, see the CE declaration enclosed. Do not tamper with or replace parts of the equipment without the specific consent of the manufacturer.

  • Page 9: Technical Characteristics

    Ground source heat pumps TECHNICAL CHARACTERISTICS The WDH ground source heat pump units have been designed to guarantee high heating capacities with excellent efficiencies; units are suitable either for heating or domestic hot water production. WDH heat pumps have been optimised for applications in buildings where water temperature demand for space heating is around 50°C.
  • Page 10 Ground source heat pumps Control and protection devices All units are supplied with the following control and protection devices: Return and supply user heat exchanger sensors, return and supply source heat exchanger sensors, high pressure switch with manual reset, low pressure switch with automatic reset, high pressure safety valve, compressor thermal overload protection, pump thermal overload protection (when present), source heat exchanger flow switch.

  • Page 11: Technical Data

    Ground source heat pumps WDH TECHNICAL DATA Mod. Refrigerant R407C R407C R407C R407C R407C R407C R407C R407C R407C R407C Heating capacity 48,2 58,7 67,9 75,8 83,7 101,7 118,4 135,2 152,3 169,5 Compressors input power 11,4 12,9 14,6 16,2 19,4 22,5 25,7 28,9 32,1...
  • Page 12 Ground source heat pumps HEATING CAPACITY AND COMPRESSORS INPUT POWER PH (kW) PA (kW) C.O.P. TWIE TWUE Mod. TWUC (°C) TWUC (°C) (°C) (°C) 34,4 33,8 33,4 10,7 12,0 36,8 36,1 35,6 35,2 10,7 12,0 13,4 40,8 39,9 39,2 38,7 10,7 12,1 13,5...
  • Page 13 Ground source heat pumps HEATING CAPACITY AND COMPRESSORS INPUT POWER PH (kW) PA (kW) C.O.P. TWIE TWUE Mod. TWUC (°C) TWUC (°C) (°C) (°C) 74,2 73,0 72,0 19,6 22,0 24,5 79,0 77,7 76,5 75,3 19,6 22,0 24,7 27,5 86,9 85,2 83,7 82,3 31,0...
  • Page 14 Ground source heat pumps HEATING CAPACITY AND COMPRESSORS INPUT POWER PH (kW) PA (kW) C.O.P. TWIE TWUE Mod. TWUC (°C) TWUC (°C) (°C) (°C) 34,4 38,6 43,5 133,9 130,3 126,7 34,6 38,7 43,6 49,1 143,7 139,7 135,7 131,7 34,8 38,9 43,7 49,2 159,4...
  • Page 15 Ground source heat pumps HEATING CAPACITY AND COMPRESSORS INPUT POWER PH (kW) PA (kW) C.O.P. TWIE TWUE Mod. TWUC (°C) TWUC (°C) (°C) (°C) 194,5 190,3 186,8 50,3 56,4 63,6 207,9 203,0 198,7 195,1 50,5 56,5 63,6 71,9 229,5 223,7 218,2 213,4 50,8...
  • Page 16 Ground source heat pumps WDH / RV COOLING CAPACITY AND COMPRESSORS INPUT POWER PF (kW) PA (kW) Mod. TWUC (°C) TWIE (°C) TWIE(°C) 45,2 42,7 40,3 37,8 34,4 30,6 11,7 14,3 49,0 46,4 43,7 41,1 37,5 33,4 11,7 14,3 53,0 50,2 47,4 44,6...
  • Page 17 Ground source heat pumps WDH / RV COOLING CAPACITY AND COMPRESSORS INPUT POWER PF (kW) PA (kW) Mod. TWUC (°C) TWIE (°C) TWIE(°C) 110,0 104,7 99,3 93,6 85,2 75,1 17,1 18,9 21,1 23,6 27,8 33,6 118,6 113,0 107,3 101,2 92,3 81,6 17,3 19,0...
  • Page 18 Ground source heat pumps WDH / RV COOLING CAPACITY AND COMPRESSORS INPUT POWER PF (kW) PA (kW) Mod. TWUC (°C) TWIE (°C) TWIE(°C) 172,0 163,7 155,1 146,3 133,5 118,3 27,5 30,0 33,3 37,3 44,1 53,4 185,5 176,6 167,5 158,1 144,5 128,4 27,9 30,2...

  • Page 19: Domestic Hot Water Production

    Ground source heat pumps WDH / RV COOLING CAPACITY AND COMPRESSORS INPUT POWER PF (kW) PA (kW) Mod. TWUC (°C) TWIE (°C) TWIE(°C) 357,7 338,9 319,7 299,9 270,8 234,5 54,2 59,7 66,0 73,4 85,8 103,5 387,3 367,1 346,6 325,5 294,7 256,6 54,9 60,2...

  • Page 20: Source Side Heat Exchangers Water Pressure Drops

    Ground source heat pumps SOURCE SIDE HEAT EXCHANGER WATER PRESSURE DROPS 5000 10000 15000 20000 15000 20000 25000 30000 A:WDH039-045 B: WDH050 E:WDH090 F: WDH110 C: WDH 060-070 D: WDH 080 G: WDH120 H: WDH130 25000 30000 35000 40000 45000 50000 40000 50000...

  • Page 21: User Side Heat Exchangers Water Pressure Drops

    Ground source heat pumps USER SIDE HEAT EXCHANGER WATER PRESSURE DROPS 5000 10000 15000 20000 20000 25000 30000 35000 A:WDH039-045 B: WDH050 E:WDH090 F: WDH110 C: WDH 060-070 D: WDH 080 G: WDH120 H: WDH130 35000 45000 55000 65000 35000 40000 45000 50000 55000 60000 65000 I:WDH152-144 L: WDH162-164 O: WDH240...

  • Page 22: Refrigerant Layouts

    Ground source heat pumps REFRIGERANT LAYOUTS Domestic hot water feeding Flow switch Return water sensor High pressure switch Supply water sensor Low pressure switch Charging plug Manual valve User heat exchanger Domestic hot water accumulator CNSW Domestic hot water heat exchanger On/off 3 way valve Partial heat recovery One way valve...
  • Page 23 Ground source heat pumps DOMESTIC HOT SANITARY WATER VERSION (WDH/RV/SW6) – 6 WATER PIPE CONNECTIONS The WDH/SW6 version is suitable to produce cold water, hot water for heating and domestic hot water: the unit is supplied with an additional heat exchanger used as condenser for the domestic hot water that, is independent from the operation mode of the unit. The activation of the additional heat exchanger is done automatically by the microprocessor control when the domestic hot water temperature measured by the sensor is lower than the required set point.
  • Page 24 Ground source heat pumps DOMESTIC HOT SANITARY WATER VERSION (WDH/SW5) – 5 WATER PIPE CONNECTIONS This version is suitable to produce domestic hot water: the unit is supplied with an ON/OFF 3 way valve to deviate the water flow in a water accumulator;...
  • Page 25 Ground source heat pumps FREE COOLING VERSION WDH/FC The Free Cooling versions (FC) is suitable for cold water production during summer operation using the cooling capacity coming from the ground probes. Operation principle: The free-cooling heat exchanger is installed in series with the user heat exchanger; the 3 way valve controls the water flow through the coil.
  • Page 26 Ground source heat pumps DOMESTIC HOT SANITARY WATER VERSION + FREE COOLING WDH/FC/SW5 – 5 WATER PIPE CONNECTIONS This unit is able to combined the features of the WDH/SW5 + the FC version; ØSC ØSS1 ØDS1 ØDC ØSS2 ØDS2 BTFC DOMESTIC HOT SANITARY WATER VERSION + FREE COOLING WDH/FC/RV/SW6( 6 WATER PIPE CONNECTIONS) This unit is able to combined the features of the WDH/RV/SW6 + the FC version;...

  • Page 27: Partial Heat Recovery Capacity

    Ground source heat pumps PARTIAL HEAT RECOVERY CAPACITY (OPTION) Mod. Partial heat recovery nominal capacity 12,8 13,0 15,0 15,3 18,5 21,5 24,8 Water flow 1635 2200 2240 2580 2630 3190 3700 4270 Water pressure drops Mod. Partial heat recovery nominal capacity 27,5 30,0 34,0...

  • Page 28: Water Pumps Available Static Pressure

    Ground source heat pumps WATER PUMPS AVAILABLE STATIC PRESSURE (OPTION) 5000 10000 15000 20000 15000 20000 25000 30000 A: WDH039,045,050,060,070 C: WDH110, 120 B: WDH080, 090 D: WDH130 30000 35000 40000 45000 50000 55000 60000 50000 60000 70000 80000 90000 E: WDH 152,144, 162,164,190 G: WDH300, 320 F: WDH 210, 240, 260...

  • Page 29: Operation Limits

    Source circuit water flow rate The nominal water flow rate given by HIDROS is referred to a Dt of 5 °C. Maximum flow rate allowed is the one that presents a Dt of 3°C: higher values may cause too high pressure drop. The minimum water flow rate allowed is the one presenting a Dt of 8 °C.

  • Page 30: Compressors Capacity Step Controls

    Ground source heat pumps COMPRESSORS CAPACITY STEP CONTROLS COMPRESSORS NUMBER Model 21,5% 21,5% 28,5% 28,5% 21,5% 21,5% 28,5% 28,5% 22,5% 22,5% 27,5% 27,5% CORRECTION TABLES Source side heat exchanger temperature difference °C Fouling factor HCCCP 1,02 0,98 0,97 IPCF 1,01 0,99 0,98 CORRECTION TABLES User side heat exchanger temperature difference °C...

  • Page 31: Sound Data

    Ground source heat pumps SOUND DATA SOUND LEVELS STANDARD VERSIONS Octave bands (Hz) Mod. dB(A) dB(A) 93,1 84,3 78,2 76,7 75,6 70,2 66,8 57,7 93,9 93,1 84,3 78,2 76,7 75,6 70,2 66,8 57,7 93,9 94,1 85,3 79,2 77,7 76,6 71,2 67,8 58,7 94,9...

  • Page 32: Safety Device Setting

    After receiving the unit, immediately check its integrity. The unit left the factory in perfect condition; any eventual damage must be questioned to the carrier and recorded on the Delivery Note before it is signed. HIDROS must be informed, within 8 days, of the extent of the damage.

  • Page 33: Location And Minimum Technical Clearances

    Ground source heat pumps LOCATION AND MINIMUM TECHNICAL CLEARANCES WDH units are designed for indoor installation. It is advisable to create a proper basement, with a size similar to unit foot-print. Unit vibration level is very low: it is advisable however, to fit a rigid rubber band between basement and unit base-frame. If it is the case, it is possible to install anti-vibration mounts (spring or rubber), to keep vibrations at a very low level.

  • Page 34: Hydraulic Circuit

    Ground source heat pumps HYDRAULIC CIRCUIT Unit water pipe-work must be installed in accordance with national and local regulation, pipes can be made either in steel , galvanized steel or PVC. Pipes have to be designed depending on the nominal waterflow and the hydraulic pressure drops of the system.

  • Page 35: Unit Display

    Ground source heat pumps UNIT DISPLAY MODELS 039÷162 MODELS 144 ÷320 REMOTE CONTROL PANEL MODELS 039÷162 MODELS 144 ÷320 Dimensions : 100 x 64 mm Dimensions: 100 x 64 mm WARNING: The remote control panel is connected to the water chiller by 2 wires of 2,5 mm section.

  • Page 36: Electrical Connections

    Ground source heat pumps ELECTRICAL CONNECTIONS It must be verified that electric supply is corresponding to the unit electric nominal data (tension, phases, frequency) reported on the label in the front panel of the unit. Power connections must be made in accordance to the wiring diagram enclosed with the unit and in accordance to the norms in force.

  • Page 37: Maintenance And Periodic Checks

    Ground source heat pumps Refrigerant charge checking • After few hours the unit is working, check that sight glass shows a green colour core: if the core is yellow moisture would be present in the circuit. In this case it is necessary circuit dehydration to be carried out by qualified people only. Check that at the sight glass there is no continuous vapour bubbles presence.

  • Page 38: Refrigerant Circuit Repair

    Ground source heat pumps REFRIGERANT CIRCUIT REPAIR In the case that refrigerant circuit should be discharged, all the refrigerant must be recovered with proper machines. The system must be charged with nitrogen, using a gas bottle with a pressure reducing valve, until 15 bar pressure is reached. Any eventual leakage must be searched with a bubble leak finder.
  • Page 42 Ground source heat pumps MTWDHGB REV.072008...
  • Page 44 Via dell’Industria 5 35020 Brugine (Pd) Tel.+390-49-9731022 Fax.+390-49-5806928 www.hidros.it Technical data shown in this booklet are not binding. HIDROS SRL shall have the right to introduce at any time whatever modifications necessary to the improvement of the product. MTWDHGB REV.072008...

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