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QModels with the Performance ltering unit: a connection must 
be made to the drain for periodic back-washes and in order to emp-
ty the sand lter if necessary. Water and electrical connections must 
also be made between the spa-pak and the hot tub (see the respec-
tive installation manual). 
 
  
ATTENTION: Before preparing the drainage system for 
connecting the hot tub, consult the local authority reg-
ulations for the disposal of chemically treated water.
 
 If installation is made indoors, it is advisable to provide a 
drain system under the support area of the hot tub which is 
connected to the main drain, connecting the main drain also 
to the tting present on the base (
3, det.B3).     
Considering the large amount of water in the hot tub, this 
precaution is advisable should there be accidental water 
leakage (also see 
8, det.5).
 
 If  installation is made outdoors it is possible to make 
drainage holes, on the base using a drill, to drain possible 
accumulation of water due to condensation.
  
Position the hot tub away from glass and/or reective 
surfaces in order to avoid possible damage to its pan-
elling.
QTo periodically empty the hot tub you can:
- connect a pipe to the drain valve, after removing the plug and 
screwing in the tting with gasket (included,  3, det. B).
NOTE: To open the valve, you must turn the ring nut anticlockwise 
and pull it, therefore if you decide to connect the hot tub perma-
nently to the ground drainage point, we recommend you install a 
valve below, bypassing the valve installed in the factory.
- connect a tube to the T-tting, rst removing the plug ( 3, 
det. B1). In this case, it is obligatory to install a gate valve down 
the line. This connection is useful for reducing emptying time.
- as an alternative, bypass the valve B installed at the factory and 
connect the tube to the drain B1 ( 3, det. B2).
NOTE: drain B1 lets you partially empty the tub. The lower part is 
emptied by means of the tube connected to valve B.
QIt is possible to connect the drain and the overow together, 
however after the gate valve (installed on the discharge tube) 
since the overow must always be open. 
QYou can use a garden hose to ll the hot tub.
  
If the hot tub is connected, for periodic lling,  to the 
mains system that supplies drinking water, this con-
nection must be carried out in compliance with the 
EN1717 norm, using “AA”, “AB” or “AD” anti-pollution 
protection procedures. For further information, we 
recommend you contact your water supply company 
and/or your plumber.
  
CAUTION: (IEC 60335-1) The pressure of the hydraulic 
system that supplies the equipment must not exceed 
600 kPa (6 bar) and, in case water is supplied through 
solenoid valve(s) (eg. balance tank) the pressure must 
have a minimum value of 35 kPa (0.35 bar).
The Unique hot tub can be installed in various ways:
- free standing on the oor or on a specically prepared base 
( 5).
 
- Semi-built in, so that only the base of the hot tub is built-in 
and therefore the side cover panels remain free (
 6). In this 
case, it is appropriate to prepare some removable under-frames 
(in marine plywood, etc.) that, besides aesthetically completing 
installation, allow the panels to be removed more easily. The size 
of the built-in space in the oor is obtained from that of the base 
of the hot tub (
 1).
- built-in, with the tub edge ( 7 det. A) ush with the oor. 
(
 8)  In this case, a base support must be made under the bot-
tom of the tub (in concrete and steel beams, (detail 1).  
Access to the plumbing must be ensured and to all other elec-
tromechanical parts that are under the tub, for example by mak-
ing a passage along the outer perimeter, that is wide enough 
(about 80 cm) to carry out all electrical and hydraulic connec-
tions and any maintenance operations (detail 2). This passage 
can be closed using removable under-frames (detail 3), with suit-
able supports (detail 4). 
Drain any stagnant water (detail 5) and guarantee suitable 
ventilation.
  
Prolonged sun exposure  could damage the material 
of which is made the hot tub shell, due to  its capacity 
to absorb heat (dark colours in particular). Don’t leave 
the hot tub to sun exposure  without adequate pro-
tection when not in use (cover thermal, gazebo, etc.).  
Any damage arising by not following these warnings 
are not covered by the guarantee.
QIn any case, you will need to provide a support base that is suit-
able for the load of the hot tub as shown in the table of weights 
above.
  
If the tub is installed on a mezzanine, terrace, roof or 
another similar structure, please seek advice from a 
building engineer.
  
The support base must be at and level so as to sup-
port the weight of the hot tub evenly. If this is not the 
case, the front panels or methacrylate shell may be-
come damaged. Such damage is not covered by the 
warranty.
  
The evaporation of water in the hot tub may lead to 
very high levels of humidity, particularly when the 
ambient temperature is high. Natural or forced ven-
tilation will help preserve the users’ comfort and re-
duce humidity damage to the building.