MAXA HWA1-A Installer Manual
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MAXA HWA1-A Installer Manual

MAXA HWA1-A Installer Manual

Air/water chillers and heat pumps with axial fans
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Air/water chillers and heat pumps with axial fans
User installer manual
Chiller
HWA1-A 02106-04349
Reversible heat pumps
HWA1-A/H 02109-04345
This manual has been created for informative purpose. The company declines any responsibility for the results of any projecting or any installation based on
the explanations and/or the technical specifications provided in this manual. It is besides forbidden the reproduction under any form of the texts and of the
figurescontained in this manual. This manual is a translation from the official italian language version. For reasons of environmental respect the Company will not
provide the hard copy in the original language which could be directly requested or downloaded from the Company website at any time. In case of any dispute, the
original language manual will be the trusted one. Even partial reproduction PROHIBITED © Copyright - Advantix SpA
www.maxa.it
R410

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  • Page 1 Air/water chillers and heat pumps with axial fans User installer manual Chiller HWA1-A 02106-04349 Reversible heat pumps HWA1-A/H 02109-04345 This manual has been created for informative purpose. The company declines any responsibility for the results of any projecting or any installation based on the explanations and/or the technical specifications provided in this manual.
  • Page 2 E.M. A.R. charges, added BT version performance for heat pumps, updated ch. 3, 6, 9, 10, 11, updated chiller envelope, dampers location changes Changes of SEER values and HWA1-A chiller performance after unit revision for ErP 11-2020 E.M. A.R. 2021, updated heat pump refrigerant charges, modified coil treatments and KA...

  • Page 3: Table Of Contents

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans Contents 1. PURPOSES AND CONTENTS OF THE MANUAL ..............5 1.1 CONSERVATION OF THE MANUAL ................. 5 1.2 GRAPHIC SYMBOLS ......................5 2. SAFETY LAWS ........................5 3. PERMITTED USES ........................6 4.
  • Page 4 HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans 12. TECHNICAL DATA ......................36 12.1 CHILLER TECHNICAL SHEET ..................36 12.2 HEAT PUMP TECHNICAL SHEET ................. 38 12.3 ELECTRICAL DATA OF THE UNITS AND AUXILIARY ELEMENTS ........41 13. OPERATING LIMITS ......................42 13.1 EVAPORATOR WATER FLOW RATE ................

  • Page 5: Purposes And Contents Of The Manual

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans The manual of units describes all the necessary information concerning the better use of the appliance under the operator’s safety conditions 1. PURPOSES AND CONTENTS OF THE MANUAL This manual provides the basic information concerning the selection, installation, operation and maintenance of the units. It is addressed to the user of the appliance and it includes the necessary indications allowing the user to operate the unit efficiently, even without any previous specific knowledge of it.

  • Page 6: Permitted Uses

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans 3. PERMITTED USES • The company excludes any contractual and extra-contractual liabilities for damages caused to persons, animals or objects, by incorrect installation, setting and maintenance, improper use of the equipment, and the partial or superficial reading of the information described in this manual.

  • Page 7: Personal Safety Equipments

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans Do not tamper with or replace parts of the equipment without the specific consent of the manufacturer. The manufacturer shall have no responsibility whatsoever in case of unauthorised operations.

  • Page 8: Safety Symbols

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans Mask and goggles: Respiratory protection (mask) and eye protection (goggles) should be used during cleaning and mainte- nance operations. 4.3 SAFETY SYMBOLS The safety signs indicated on the unit which should be respected: General hazards.

  • Page 9: Refrigerant Safety Data Sheet

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans 4.4 REFRIGERANT SAFETY DATA SHEET Name: R410A (50% Difl uoromethane (R32); 50% Pentafl uoroethane (R125). RISKS INDICATIONS Major risks: Asphyxia Specifi c risks: The rapid evaporati on may cause freezing.

  • Page 10: R410A Gas Disposal

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans 4.5 R410A GAS DISPOSAL The procedures described below may only be performed by skilled technicians or qualified personnel: • do not dispose of the gas in areas at risk of explosive mixtures forming with air The gas should be disposed of in an appropriate torch with backfiring stop device.

  • Page 11: Temperature Limits For Transport And Storage

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans Be careful when working near condensing coils. The aluminum fins are very sharp and can cause serious injuries. After the maintenance operations, tightly close the panels with the fastening screws.

  • Page 12: Positioning And Minimum Technical Clearances

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans min.1900 min.1400 Lifting with lifting tubes, ropes and sling bar 5.4 POSITIONING AND MINIMUM TECHNICAL CLEARANCES The models are all designed for outdoor installations. It is advisable to realize a supporting basement, with adequate size similar to unit foot- print.
  • Page 13 In the case of two units installed in a free field, it is recommended to maintain a minimum distance between the units of 1100 mm for units with width 1100 HWA1-A 02106, 02120, 02128, 02140, 04155, 04177, 04184 HWA1-A/H 02109, 02121, 02142, 02148, 02160...
  • Page 14 Height units (CASE B) use a minimum clearance of 2300 mm or contact MAXA sales technical support. Any covering over the unit or locat- ing near trees (even if they partially cover the unit) should be avoided in order to allow the air recirculation.

  • Page 15: Dimensions

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans 5.5 DIMENSIONS The dimensions of the standard and super silent (SSL) versions are reported in the below tables. Height [mm] Max Height Max Height Model HWA1-A Versions “SSL” Versions “SSL” or...
  • Page 16 HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans Shipping weight Operating Model HWA1-A Version A [mm] B [mm] Xb [mm] Yb [mm] [kg] weight [kg] Standard 1080 1090 1069 02120 1100 2860 /PDAP/SI 1360 1760 1409 Standard...
  • Page 17 Air/Water chillers and heat pumps with axial fans 2 fans units: HWA1-A/H 02109, 02121, HWA1-A 02106, 02120, 02128 3 fans units: HWA1-A/H 02142, 02148, 02160, HWA1-A 02140, 04155, 04177, 04184 4 fans units: HWA1-A/H 04176, 04199, 04215, 04237, HWA1-A 04209, 04239, 04258...

  • Page 18: Hydraulic Connections

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans 6 fans units: HWA1-A/H 04273, 04304, 04345, HWA1-A 04305, 04349 5.7 HYDRAULIC CONNECTIONS The hydraulic connections have to be installed in accordance with national and/or local regulations; the pipes can be made up of steel. The pipes have to be accurately sized as a function on the nominal water flow of the unit and on the hydraulic pressure drops of the hydraulic circuit.

  • Page 19: Characteristics Of Water Of The Plant Circuit

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans The heating system and the safety valves must comply with the requirements of standard EN 12828. 5.7.1 Characteristics of water of the plant circuit To ensure the correct operation of the unit, the water should be adequately filtred (see what is reported at the beginning of this paragraph) and that the amounts of dissolved substances should minimal.

  • Page 20: Drainage System

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans TE IN W-IN EXCH TE OUT W-OUT Legenda EXCH Plate heat exchanger Storage tank Differential pressure switch Air vent valve Temperature sensor Expansion vessel Pump Manometer Discharge valve Flow switch...

  • Page 21: Plant Circuit Loading/Unloading

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans 5.7.4 Plant circuit loading/unloading WARNING: Verify all the charging/topping up operations. WARNING: Before beginning the charging/topping up operation of the plant circuit, disconnect the unit from the electric power supply.

  • Page 22: Air Vent Valve

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans 5.7.5 Air vent valve The unit is fitted with an air venting valve to automatically remove air that has built up in the circuit, pre- venting undesirable effects such as premature corrosion and wear, lower performance and low exchange output.

  • Page 23: Power Supply

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans Turn the disconnector switch to break the voltage Use a special key to unclock the door closures. The above-mentioned operations must be carried out with the machine off and power disconnected (by means of the specific disconnector applied by the installer).

  • Page 24: User Terminal Block

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans Recommended cable section Recommended tightening torque Power supply Model (max length30 m) on main disconnector [Nm] 400V / 3ph HWA1-A 02128 5x16 400V / 3ph HWA1-A 02140 5x25 400V / 3ph...
  • Page 25 Free XU-7.2 Internal use (HWA1-A/H unit) XU-8.1/8.2 Signal on compressor (HWA1-A unit) Internal use (HWA1-A/H) XU-9.1/9.2 Double set point signalization (HWA1-A unit) Season mode signalization (HWA1-A/H 02109, 02121 units) Digital outputs XU-10.1/10.2 Internal use (HWA1-A/H excepet the units 02109, 02121)

  • Page 26: Control Logics

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans Terminal block /1.D16 5.8.4 Control logics For further information on the control logics, please refer to the relative manual which can be requested from CAT or the manufacturer.

  • Page 27: Refrigerant Circuit

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans 5.9 REFRIGERANT CIRCUIT Herein below are reported the conceptual diagrams of chillers and heat pumps. MAF1 Refriger- ant circuit HWA1-A units EEV1C MAF1 RD/RS CO/EV EEV1H Y4W1 Refriger- ant circuit...

  • Page 28: Start Up

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans LEGENDA Compressor W-IN User’s water inlet CHILLER’S CONDENSER W-OUT User’s water outlet CHILLER’S EVAPORATOR MAF1 Axial fan motor CO/EV Condenser in chiller operation Discharge line EV/CO Evaporator in chiller operation...

  • Page 29: Shutdowns For Long Periods

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans In case breakdown or malfunction situations: • check the type of alarm to communicate it to the service center; • contact an authorized service center; • if required by the service center, turn off the unit immediately without resetting the alarm;...

  • Page 30: Operazione

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans Be careful when working near condensing coils. The aluminum fins are very sharp and can cause serious injuries. Always use appropriate personal protective equipment. After the maintenance operations, pay attention to the correct tightening of the cable gland designed for the passage of the electric power cable.

  • Page 31: Cleaning Finned Coils Treated With The Anti-Corrosion Method

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans • a) Remove dirt from the surface. Deposits like leaves, fibers, etc. must be removed using a vacuum cleaner (use a brush or other soft acces- sory, be careful to avoid rubbing with metal or abrasive parts). In case of using compressed air, it is necessary to pay attention to keep the air flow always perpendicular to the surface of the condenser to avoid bending the aluminum fins.

  • Page 32: Disposal Procedure

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans DISPOSAL PROCEDURE Once the unit reaches the end of its life cycle and needs to be removed or replaced, the below operations should be respected, • The refrigerant has to be recovered by trained people and sent to proper collecting centre, according to the procedures indicated in Regu- lation No.
  • Page 33 HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans User / Activity Operator User Danger Indication / Instruction Residual risk The user-installer manual under Entanglement caused by the fan Removal of the protection grid chapter 9 contains specific warn-...
  • Page 34 HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans User / Activity Operator User Danger Indication / Instruction Residual risk In the user-installer manual in chapter 5 suspended installation Failure to observe the actions Caused by noise: Discomfort...
  • Page 35 HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans User / Activity Operator User Danger Indication / Instruction Residual risk In the user-installer manual un- der chapter 9 it is recommended to pay attention to the correct Generated by unit use environ-...

  • Page 36: Technical Data

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans TECHNICAL DATA 12.1 CHILLER TECHNICAL SHEET HWA1-A model Technical specifications Unit 02106 02120 02128 02140 04155 04177 Cooling capacity (1) Total power input (1) 33,5 38,3 44,2 44,3 49,9 56,7...
  • Page 37 HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans HWA1-A model Technical specifications Unit 04184 04209 04239 04258 04305 04349 Cooling capacity (1) Total power input (1) 62,9 67,1 76,8 88,5 98,3 EER (1) 2,90 3,10 3,10 2,90...

  • Page 38: Heat Pump Technical Sheet

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans at 35%. (9) Calculated using AHRI 551/591 (SI) standard. N.B. The performance data are indicative and could be subject to change. In addition, the performances declared in (1), (2) and (8) refer to the instantaneous power according to UNI EN 14511.
  • Page 39 HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans HWA1-A/H model Technical specifications Unit 02109 02121 02142 02148 02160 04176 Cooling capacity (1) Total power input (1) 33,8 38,9 41,3 44,4 49,8 52,6 EER (1) 3,05 2,90 3,19...
  • Page 40 HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans HWA1-A/H model Technical specifications Unit 04199 04215 04237 04273 04304 04345 Cooling capacity (1) Total power input (1) 59,4 67,2 77,5 80,6 92,9 EER (1) 3,15 3,10 2,90 3,22...

  • Page 41: Electrical Data Of The Units And Auxiliary Elements

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans 12.3 ELECTRICAL DATA OF THE UNITS AND AUXILIARY ELEMENTS Power supply of the unit V/~/Hz 400/3PH+PE/50 Onboard controller power supply V/~/Hz 12/1/50 Remote controller’s power supply V/~/Hz 12/1/50 Fan motors power supply...

  • Page 42: Operating Limits

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans HWA1-A model Dimensions Unit 02106 02120 02128 02140 04155 04177 F.L.A. Input current input at the maximum allowable conditions F.L.A. Compressor 1 38,2 38,2 48,6 38,2 34,0 38,2 F.L.A. Compressor 2...

  • Page 43: Chilled Water Production (Summer Operation)

    50°C. In heating mode, the allowed range of the outdoor temperature goes from -10°C (-20°C with CC accessory) to +36°C depending on the water outlet temperature as indicated in the below tables. Operating limits HWA1-A/H: Water chiller mode Ambient temperature standard version Min -10°C (-20°C with CC accessory) Max +46°C...
  • Page 44 Ambient temperature (BT version) Min -20°C Max +50°C Water outlet temperature (BT version) Min -8°C Max +18°C HWA1-A/H HEATING MODE -20,0 -10,0 10,0 20,0 30,0 40,0 50,0 Ta [°C] A1 = HWA1-A/H heating HWA1-A/H COOLING MODE -10,0 -5,0 10,0 15,0 20,0 Tw [°C]...
  • Page 45 HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans A1 = HWA1-A/H cooling partial load A2 = HWA1-A/H cooling A3 = HWA1-A/H cooling with CC accessory up to -20°C A4 = HWA1-A/H BT partial load A5 = HWA1-A/H BT HWA1-A...

  • Page 46: User - Onboard Controller Interface

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans USER – ONBOARD CONTROLLER INTERFACE The unit is equipped with the display seen below having a transparent polycarbonate hinged door and its protection rating is IP67. The interface consists of a variable text part and a series of icons identifying the operation of the unit as shown in the table below.

  • Page 47: Menu

    HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans the case of more than one active alarm the first one will be displayed, and the second will be shown once the first one is reset. In menu mode the display is a function of the position you are in.
  • Page 48 HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans PROBLEM CAUSE SOLUZIONE Low outdoor air temperature Low plant return water temperature LOW EXHAUST PRESSURE Residual humidity in the cooling circuit Check Air in the hydraulic circuit Insufficient refrigerant gas charge...
  • Page 49 HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans...
  • Page 50 HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans...
  • Page 51 HWA1-A & HWA1-A/H Air/Water chillers and heat pumps with axial fans...
  • Page 52 ADVANTIX SpA Via S. Giuseppe Lavoratore 24, 37040 Arcole (VR) Italy Tel. (+39).045.76.36.585 E-mail: info@advantixspa.it www.maxa.it...

This manual is also suitable for:

Hwa1-a/h02106-0434902109-04345

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