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NUOS Plus - User Manual

  • Text
  • Appliance
  • Heater
  • Heating
  • Installation
  • Operating
  • Discharge
  • Maintenance
  • Electrical
  • Technical
  • Regulations
  • Nuos
  • Manual

4.3 Air supply

4.3 Air supply connections Please bear in mind that using air from heated environments may hamper the building’s thermal performance. There is one connection for the air intake and one for the air exhaust on the rear side of the appliance. It is important to not remove (except for not canalized installation, picture on the side) or tamper the two grilles. In the event of a non-ducted product, in order to avoid by-passes between the air intake and outlet, replace the grilles on the product with accessory grilles (code 3078095 where not supplied), or do not remove the grilles on the product and fit a curve in the delivery pipe (picture on the side). The outlet air may reach temperatures that are 5-10°C lower compared to that of the inlet air and, if not ducted, the temperature of the room of installation may drop sensibly. If operation by exhaust or intake to the outside (or another room) of the treated air by the heat pump is foreseen, suitable ducting must be used for air passage. Ensure that the ducting is connected and fastened securely to the product to prevent accidental disconnections and annoying noises. We recommend installing the ducted product as shown in picture on the side. Heat pump water heater - TECHNICAL INFORMATION FOR INSTALLERS Ø200 Ø150 158,3 155,3 147,3 The minimum height for a ducted installation is shown in below picture. In the event of a ducted product, allow a minimum distance between the product and the ducts to allow for the removal of the evaporator filter (ref. below picture). 158,3 155,3 147,3 158,3 155,3 147,3 199,3 199,3 Ø150 Ø150 Ø200 Ø200 Ø150 Ø150 Ø200 Ø200 11

Heat pump water heater - TECHNICAL INFORMATION FOR INSTALLERS WARNING: Do not use outdoor grills resulting in high losses, such as anti-insect grilles. The grids used should allow good air flow, the distance between the inlet and outlet air should not be less than 37cm. Protect pipes from the external wind. The expulsion of air in the chimney is allowed only if the draft is appropriate, is also required periodic maintenance of the barrel, and chimney accessories. The total static pressure loss due to installation is calculated by adding the loss of the single installed components; this sum must be lower than the static pressure of the fan (par. 2.5) WARNING! A type of canalization not suitable affects product performance and significantly increases the heating time! 4.4 Hydraulic connections The combination valve can be installed in any orientation. The pipework must be flushed prior to fitting the valve to avoid damage to the valve. WARNING: No valves must be fitted between the combination valve and the product. WARNING: No valves must be fitted from the combination valve to expansion vessel or PRV discharge. Expansion vessel installation 12

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