Water Connection; Connection Of The Irrigation Handle; Starting Up - Atmos Variotherm plus Operating Instructions Manual

3.0 Setting up and starting up

3.3.4 Water connection

• Local requirements:
- Water-tap with G3/4" external thread.
- Drinking water!
- Input water pressure: +2000...+6000 hPa.
- Feed temperature: +7...+19.5°C (recommended),
but at least 0.5°C below the required lowest cold
stimulation value.
- Drainage fittings (Art.Nr. 502.0880.0)
• Connection to water supply and waste water:
- There are country-specific regulations for the
installation to be considered when the unit is
connected to the public water supply. To comply with
the rules according to EN 1717, an unpressurized
water separation with overflow is required.
Therefore, ATMOS recommends to install the water
separation unit ATMOS Aqua Clean, REF 502.1200.0
between the water supply and the device in order to
meet the connection requirements according to EN
1717.
- Prior to connecting the unit to the water supply the
feed line must be flushed clean by opening the water
tap for a minute and allowing free flow of the tap
water.
- Connect the filter unit to the water-tap by means of
adaptor and gasket.
- Insert the gaskets in the cap nuts of the water supply
hose.
- Join the nuts with the filter connection and the unit
connection (, fig. 3).
- Insert the gaskets in the cap nuts of the waste water
hose.
- Join the nuts with the unit connection (, fig. 3) and
the drainage fittings.
- There is no special calcification safety device
integrated in the water system. Such a system is to
be connected when the respective drinking water is
of hardness grade 3 (14 - 21°d resp. 2.5 - 3.8 mmol/l
= hard water) and with hardness grade 4 (from 21°d
resp. from 3.8 mmol/l = very hard water).
Please contact your local water supplier and / or
plumber.
Water Millimol per
hardness litre
1 (soft) ≤ 1.3
2 1.3 to 2.5
(medium)
3 (hard) 2.5 to 3.8
4 (very > 3.8
hard)
!
Close the water tap when the unit is not in use!
12
°dH
≤ 7.3 Calcification
protection system
7.3 to 14
is not required
14 to 21.3 Calcification
protection system
> 21.3
is required

3.3.5 Connection of the irrigation handle

• Insert a "three-holes gasket" (, fig. 4) in the double-
barrelled hose and screw it (, fig. 4) on the unit
connection (, fig. 3).
) Use only "three-holes gaskets" or the unit will not function
correctly!
• Insert a "three-holes gasket" in the irrigation handle and
screw it on the free end of the double-barrelled hose.
• Open the water-tap. Check whether all connections are
tight.

3.4 Starting up

• Insert the handle in its holder; the jet must point to
reverse side of the unit.
• Switch on the unit (, fig. 1).
• Automatic display test with digital numbers " 8 8 " and
acoustic warning signal.
• Automatic activation of the thermal process will begin for
reducing bacterial count. Duration: 5 min.
• Automatic change into the irrigation mode (37°C).
• When the irrigation mode is not used (handle is not
removed from its support) the unit change into the energy
saving mode after 5 min.