AristonThermoUK
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1 year ago
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Nimbus Plus M NET R32 Installation Manual UK

  • Text
  • Electrical
  • Refrigerant
  • Sensor
  • Outdoor
  • Appliance
  • Heating
  • Nimbus
  • Installation
  • Compressor
  • Valve
  • Manual
  • Www.ariston.com

Electrical connections

Electrical connections 5.1 Outdoor unit electrical connections In accordance with the installation instructions, all systems for disconnecting the main power supply must have an open contact (4 mm) that guarantees full disconnection as per the indications of the Class III overvoltage conditions. a a a Make the earth connection before proceeding with all the other electrical connections. The indoor and outdoor units must be powered separately. To avoid any risk, the power cable of the indoor and outdoor units must be installed and replaced only by specialised technicians. – Remove the front panel to access the electrical parts. – Remove the pre-cut sections (1) with the aid of a screwdriver in order to pass the electrical cables. 1-ph outdoor unit terminal board M1 EH1 EH1 ST1 ST1 L N ⏚ M2 1ph G S ATG Fig. 49 1 M1 Main power supply terminal board M2 Signal terminal board ATG ATG Bus connection between indoor and outdoor units 1ph Connection to single-phase power supply EH1 Anti-freeze electrical heating element for protecting hydraulic pipes ST1 Safety thermostat (230 V) connection for the under-floor system (bridged by default) 3-ph outdoor unit terminal board a Fig. 47 Prior to accessing the terminals, all the supply circuits must be disconnected. M1 EH1 EH1 ST1 ST1 L1 L2 L3 N ⏚ M2 M2 M1 3ph G S ATG Fig. 50 Fig. 48 M1 Main power supply terminal board M2 Signal terminal board ATG ATG Bus connection between indoor and outdoor units 3ph Connection to three-phase power supply EH1 Anti-freeze electrical heating element for protecting hydraulic pipes ST1 Safety thermostat (230 V) connection for the under-floor system (bridged by default) 32 / EN

a a The ST1 connection is bridged by default. Do not remove the jumper. If the installation involves the use of thermostats or timer-controlled thermostats to manage the heat request, it is necessary to ensure that they do not have a proportional-band control logic. This logic may indeed cause inefficient behaviour of the system and fail to guarantee the fulfilment of the room temperature set-point. We recommend using modulating thermostats, modulating timer-controlled thermostats or ON/ OFF thermostats without proportional band logic. 5.2 Indoor unit electrical connections a a Electrical connections Before carrying out any work on the system, shut off the power supply at the main switch. Comply with the neutral and phase connections. – To access the electrical panel of the indoor unit, loosen the closing screw (1) and open the main door. – Fasten the power cable (2) to the terminal board (M1). – Fasten the communication cable (3) between the outdoor and indoor units to the terminal board (M2). – To ensure adequate resistance to pulling, the power cables must be secured using the cable clamps (4). M2 M1 1 Fig. 52 4 – Detach the clips (2) and open the cover (3). 3 4 10 2 Fig. 51 9 Fig. 53 EN / 33

MANUALS

AristonThermoUK
Views
1 year ago
Flag

Nimbus Plus M NET R32 Installation Manual UK

  • Text
  • Electrical
  • Refrigerant
  • Sensor
  • Outdoor
  • Appliance
  • Heating
  • Nimbus
  • Installation
  • Compressor
  • Valve
  • Manual
  • Www.ariston.com

Electrical connections

Electrical connections 5.1 Outdoor unit electrical connections In accordance with the installation instructions, all systems for disconnecting the main power supply must have an open contact (4 mm) that guarantees full disconnection as per the indications of the Class III overvoltage conditions. a a a Make the earth connection before proceeding with all the other electrical connections. The indoor and outdoor units must be powered separately. To avoid any risk, the power cable of the indoor and outdoor units must be installed and replaced only by specialised technicians. – Remove the front panel to access the electrical parts. – Remove the pre-cut sections (1) with the aid of a screwdriver in order to pass the electrical cables. 1-ph outdoor unit terminal board M1 EH1 EH1 ST1 ST1 L N ⏚ M2 1ph G S ATG Fig. 49 1 M1 Main power supply terminal board M2 Signal terminal board ATG ATG Bus connection between indoor and outdoor units 1ph Connection to single-phase power supply EH1 Anti-freeze electrical heating element for protecting hydraulic pipes ST1 Safety thermostat (230 V) connection for the under-floor system (bridged by default) 3-ph outdoor unit terminal board a Fig. 47 Prior to accessing the terminals, all the supply circuits must be disconnected. M1 EH1 EH1 ST1 ST1 L1 L2 L3 N ⏚ M2 M2 M1 3ph G S ATG Fig. 50 Fig. 48 M1 Main power supply terminal board M2 Signal terminal board ATG ATG Bus connection between indoor and outdoor units 3ph Connection to three-phase power supply EH1 Anti-freeze electrical heating element for protecting hydraulic pipes ST1 Safety thermostat (230 V) connection for the under-floor system (bridged by default) 32 / EN

a a The ST1 connection is bridged by default. Do not remove the jumper. If the installation involves the use of thermostats or timer-controlled thermostats to manage the heat request, it is necessary to ensure that they do not have a proportional-band control logic. This logic may indeed cause inefficient behaviour of the system and fail to guarantee the fulfilment of the room temperature set-point. We recommend using modulating thermostats, modulating timer-controlled thermostats or ON/ OFF thermostats without proportional band logic. 5.2 Indoor unit electrical connections a a Electrical connections Before carrying out any work on the system, shut off the power supply at the main switch. Comply with the neutral and phase connections. – To access the electrical panel of the indoor unit, loosen the closing screw (1) and open the main door. – Fasten the power cable (2) to the terminal board (M1). – Fasten the communication cable (3) between the outdoor and indoor units to the terminal board (M2). – To ensure adequate resistance to pulling, the power cables must be secured using the cable clamps (4). M2 M1 1 Fig. 52 4 – Detach the clips (2) and open the cover (3). 3 4 10 2 Fig. 51 9 Fig. 53 EN / 33

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