Bedienungsanleitung Ariston NUOS PLUS (Seite 23 von 44) (Englisch)

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6. INSTALLATION

6.1 LOCATION OF THE APPLIANCE

The following list gives guidance to locating the Nuos heat pump.

1. The NOUS must be installed in a dwelling or suitable outhouse, it

must not be installed outside and/or where it could be subjected to

temperatures below 1°C.

2. The Nuos heat pump is rated as an IPX4. It must not be installed in

Bathroom Zone 1. It can be installed in Zone 2, however, the electrical

switch must be installed in Zone 3.

3. Units without an air exhaust duct must be installed in rooms with a

volume greater than 20m³ and a floor area greater than 8m².

4. The practical limit of 5.12m³ (as stated on page 18) is the minimum

room volume the appliance should be installed in, the volume is based

on quantity of refrigerant in the system. In the event of a sudden

release of refrigerant then the minimum room volume will make it

safer for the engineer. Where the room volume is less than the

practical limit never fit a self-closing device to the door.

5. The effects of cooled air entering the room must be considered. The

operating temperature range of the appliance is between - 5ºC and

42ºC. Operating the appliance below the minimum temperature

compromises the efficiency and can lead to frosting of the heat pump.

6. If the unit is to be installed in a room with a volume of less than 20m³

and/or a floor area less than 8m² then an exhaust duct must be fitted.

Also provision must be provided for air to enter the room i.e. vent or

air brick. The exhaust can be ducted to outside the dwelling or to

another room.

7. Do not install the unit in rooms with other appliances that require

ambient air; e.g. conventional flue boilers, gas fires and water heaters.

(Only applies where air is drawn from a room or internal space).

8. Study the water connections and electric supply and consider the

plumbing and wiring layouts for optimum positioning of the unit.

9. The TPRV, PRV discharge pipe and condensate drain pipe must be

plumbed to a suitable drain, normally outside the dwelling. The PRV

discharge must comply to Building Regulati3ns, see 6.13.

10. To function correctly, the unit must be installed with suitable minimum

clearances. These are 100mm behind the unit, 400mm to each side

and 50mm above, see fig. 6.16A.

11. The floor on which the unit is to be standing must be capable of

supporting (locally) the weight of the full unit. Do not install the

appliance on a chipboard floor.

12. The unit has an electric fan; some vibration and sound is inevitable,

some types of floor construction may produce adverse sound levels.

A sound reducing pad can be used between the Nuos and the floor,

not supplied.

The air supply for the Nuos enters through a round socket at the left hand

side of unit. The air could be drawn from within the room or ducted from

another room/internal space within the dwelling or more typically from the

outside. See 1.8

The minimum volume of the room/space that air is being drawn must

have a minimum volume of 20m³. The effects of drawing warm air from

the room must be considered.

Do not draw air from rooms containing appliances that require ambient air

for combustion, typically conventional flue boilers, water heaters and gas

fires.

6.2 AIR SUPPLY

See examples section 1.13.

IMPORTANT

Hard Water

Where the mains total water

hardness exceeds 200 ppm,

provision should be made

to treat the feed water to

reduce the rate of limescale

accumulation.

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