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NexPro Plus
EN INSTALLATION AND MAINTENANCE MANUAL

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Summary of Contents for Riello NexPro Plus

  • Page 1 NexPro Plus EN INSTALLATION AND MAINTENANCE MANUAL...
  • Page 2 Please accept our thanks and our congratulations on your choice of product. Riello S.p.A. CONFORMITY NexPro Plus units comply with the European Directives: − Low Voltage Directive 2014/35/EU − Electromagnetic Compatibility Directive 2014/30/EU − Machinery Directive 2006/42/EC −...
  • Page 3: Table Of Contents

    CONTENTS 1 GENERAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . 4 3.10 Manual operating mode .
  • Page 4: General Characteristics

    RIELLO S.p.A. 1 .2 Basic safety rules Via Ing. Pilade Riello, 7 - 37045 Legnago (VR) It should be noted that the use of this product requires certain essential safety regulations to be respected, including the...
  • Page 5: General Description

    GENERAL CHARACTERISTICS 1 .4 General description 1 .6 Constructive characteristics The heat pump heaters NexPro Plus use the thermal energy The main constructive features of the heat pump heaters of the air to produce domestic hot water. NexPro Plus are: Ease of installation, noiseless and reliable operation and min- −...
  • Page 6: Configurations

    1 . 7 Configurations To adapt at different installation requirements, R NexPro Plus is available in the following versions: − STANDARD: the heat pump and the electric heating element are the sources of heating(NexPro 300 Plus) − WITH AUXILIARY COIL: use in combination with solar panels (NexPro 300 S Plus) −...
  • Page 7: Installation

    2 . 1 . 1 Packaging hour after its final positioning. Transport the packed section as close as possible to the Heat pump heaters NexPro Plus are fitted on pallet and installation place. wrapped with suitable wrapping. UNPACKING Perform the following unpacking operations: −...
  • Page 8: Storage

    Safety and Accident-prevention Standards described below. It also declines all liability for damage caused by improper use of the NexPro Plus unit and/or modifications performed without authorisation. − Specialised staff must perform installation.
  • Page 9: Water Connections

    INSTALLATION NexPro 300 S Plus min. 0,5 m min. 1,2 m min. 0,5 m If the unit is channelled, do not exceed the equivalent length of 10 metres (sum of suction and outlet channels) with rated diameter of the ducts equal to 160 mm. Hot water Ø...
  • Page 10: Example Of System Diagram

    INSTALLATION Make water connections to the plant ensuring that: − Check the hardness of the water, which must not be less − they do not rest on the unit than 12 ° F . With particularly hard water, it is recommended −...
  • Page 11: Condensate Drain Connection

    INSTALLATION 2 .5 Condensate drain connection In particular environmental conditions, duly insulate the The condensate that forms during operation of the heat pumps aeraulic tubes to prevent condensation on the tubes. flows through the exhaust pipe positioned inside the insulation that exits on the rear of the unit with threaded by 1/2”.
  • Page 12: Electronic Board

    INSTALLATION Digital inputs The manufacturer will not be held responsible for any damage caused by failure to earth the system or by abnormal Initials Description Status Default Notes power supply. 1 open (alarm) High pressure Connected 0 close Electrical connections to the control panels must be carried out Preset only, by specialised personnel.
  • Page 13: Starting And Use

    STARTING AND USE 3 STARTING AND USE L19 L18 L17 L16 L15 3 . 1 Commissioning Commissioning must be carried out only by the Technical Support Service or a qualified professional. Perform starting operations in the following order: − connect the unit to the electrical network −...
  • Page 14: Key

    STARTING AND USE 3 .3 .2 Key 3 .5 Selection of the operating modes When the device is powered, the display shows the current Press [FUNCTION] key to access the various operating modes. time. Every time you press the key, a different operating mode is se- Press [ON/OFF] key to set the unit in Stand by mode;...
  • Page 15: List Of Parameters

    STARTING AND USE 3 .6 List of parameters 3 .6 . 1 Parameters of electronic board inputs/outputs Starting from the current water temperature display, by pressing [SET] key it is possible to display the information on machine status, such as probe temperature, inputs/outputs status, runtime (see Navigation diagram). The access to this branch is indicated by the steady illumination of a point on the right end of the display.
  • Page 16 STARTING AND USE CONFIGURATION BRANCH (CFN) Parameter Default Limits Unit Description Level 15 - 60 °C Max DHW setpoint value that can be reached with pdc External air setpoint for activation of alternative source to heat 8 (-5) -20 - 30 °C pump 60 - 70...
  • Page 17 STARTING AND USE MENU FAN (FAN) Parameter Default Limits Unit Description Livello 0 - 1 Num(1) Sets the operating logic (0= ON/OFF) (1= modulating) 40 - F04 Num(1) Minimum fan speed. % of maximum voltage. From 40 to 100% F03 - 100 Num(1) Maximum fan speed.
  • Page 18: Navigation Diagram

    STARTING AND USE 3 . 7 Navigation diagram Probe TEMPERATURE reading Press and hold to access installer parameters Probe reading Probe reading Visualize Activation 0 = close Insertion Password HP Pressostat 1 = open (alarm) Visualize Activation 0 = close BP Pressostat 1 = open (alarm) Visualize Value...
  • Page 19: Automatic Operating Mode

    STARTING AND USE 3 .8 Automatic operating mode Whereas the electric heating element activation is possible for all models, the boiler activation is possible only for model The control automatically activates the heat pump or the alter- NexPro 300 CS Plus where a suitably dimensioned auxiliary ex- native source to heat pump according to the comparison be- changer is present.
  • Page 20: Holiday Function

    STARTING AND USE 3 . 1 6 Hourly programming NOTE: in the navigation diagram, near parameter Ho3, it is possible to see the days passed since the last antibacterial 3 . 1 6 . 1 5-day time interval treatment . The activation is not possible if FAST HEATING or HIGH TEMPERA- It allows to activate a singledaily hourly programme to activate TUREfunctions are already enabled.
  • Page 21: Unit Remote On/Off Function

    STARTING AND USE The dynamic setpoint is enabled only for heat pump operation. When the function is enabled (H70=1), by pressing [FUNCTION] Dynamic Set Point parameters: key two conditions occur: − H34 slope of the compensation line (value between 0.5 −...
  • Page 22: Defrost Management (Dfr Branch)

    STARTING AND USE 3 .23 Alarms The factory settings of the parameters are shown in the follow- ing example: ALARM E01 - HIGH PRESSURE The alarm shuts off the unit and the display shows the message E01. The reset is automatic until the number of interventions/ hour is equal to the value set in the parameter AL7, in which case it becomes manual.
  • Page 23: Counter Reset

    MAINTENANCE 3 .24 Counter reset 4 MAINTENANCE All User and Manufacturer parameters and runtimes are stored 4 . 1 Routine maintenance in memory. The runtime and anti-legionella count stops if pow- er supply is missing and restarts from the status in which it was before power supply interruption.
  • Page 24: Troubleshooting

    4 .3 Recycling and disposal When they are no longer used, the heat pump heaters NexPro Plus shall be disposed of in compliance with the current regulations. In particular, European Directive 2012/19/EU on waste electrical and electronic equipment requires their disposal outside the normal municipal solid waste stream.
  • Page 25 MAINTENANCE...
  • Page 26 MAINTENANCE...
  • Page 28 RIELLO S.p.A. 37045 Legnago (VR) Tel. 0442630111 - Fax 044222378 - www.riello.it The manufacturer strives to continuously improve all products. Appearance, dimensions, technical specifications, standard equipment and accessories are therefore liable to modification without notice.

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