GENERAL DIAGRAM
SPA WITH OVERFLOW
Spas with overflows can redirect the water displaced by users into a balance tank, always maintaining a stablewater level inside the Spa tub.
See below a general diagram of the installation of this type of Spa.
SPA WITH SKIMMER
Spas without overflows have a different setup. No balance tank is required; instead, the Spa water is suctioned directly via a skimmer.When users enter the Spa, thewater level rises; the tub may overflow if the number of users exceeds the indications for each Spa.
The installation of both Spas with overflows and Spas with skimmers include the recirculation circuit,water massage, air massage and an electrical installation, all of which are detailed below.
RECIRCULATION CIRCUIT
The function of this circuit is to maintain the quality of the Spa water. This is achieved by means of water recirculation through a purification filter, a heating system and a disinfection system.
SPA WITH OVERFLOW
Given that the Spa has an overflow, it is essential to maintain the water level constant and at maximum level. In order to achieve this, it is necessary to install a balance tank installed in series with the recirculation circuit. Doing so will compensate the fluctuations in level caused by variations in the number of bathers.
Although there are different ways of setting up the recirculation circuit, we proceed to detail the two most popular systems: “Floor suction” and “Floor return”. Check the regulations in force in each country in order to establish which system is best.
SPA FLOOR SUCTION
This option makes it possible to collect part of the recirculationwater from the Spa floor drain.
The filtered water is absorbed both from the balance tank (mostly) and the Spa floor drain via the filter pump, and is directed towards the sand filter, the heating and the ozonator or disinfection system; to be directed towards the Spa via the return nozzles.
SPA FLOOR RETURN
This option allows you to direct part of the already filtered and heated water both via the return nozzles and via the Spa floor drain.
The filtered water is only suctioned from the balance tank by the filter pump and is directed toward the sand filter, the heating and the ozoniser or disinfection system, to then be directed towards the Spa via the return nozzles and the Spa floor drain.
SPA WITH SKIMMER
HEATING CIRCUIT
The basic components present in all heating circuits are:
FILTER PUMP
Designed to carry out the filter and heating circuit, recycling the water of the Spa in approximately 6 to 20 minutes. Suctions from the Skimmer or Surge Tank, directing the water through the filter and electric heating, via the return nozzle.
ELECTRIC HEAT EXCHANGER
This makes it possible to maintain the desired temperature. It must be placed in the filter circuit after the filter, so as to avoid air bubbles accumulating inside.
The heat exchanger incorporates a safety thermostat with manual reset. This avoids the heat exchanger from being damaged if the Spa is started up without anywater circulating.
FILTER
Element which filters in order to ensure thewater is of an adequate quality.
The size of the filter is determined on the basis of:
• Volume of the Spa.
• Water recirculation time.
• Filtering speed.
• Filtering surface.
FLOW SENSOR
Safety device designed to prevent the heat exchanger from operating if there is no water flow in the filtration circuit.
WATER MASSAGE CIRCUIT
The water is suctioned by the massage pump through the drainpipes and is returned to the Spa via high speed jets.
There can be several massage circuits in a single Spa, each activated by a massage pump. Depending on the Spa and the number of jets it has, there may be one, two or even three massage pumps.
In order to boost the water massage a connection is made with an ambient air intake. This way, when the water circulates through, thanks to the Venturi effect, the air is suctioned, creating the air-water mix and producing a more intense massage.
Keep reading to see the general diagram of water spa massage.
AIR MASSAGE CIRCUIT
BLOWER PUMP
Continued use blower pump for Compact Kit in public use installations. They operate with a 400 V AC III electrical supply as standard.
AIR CIRCUIT
The mission of the air circuit is to return air from the blower pump to the Spa. The air is distributed inside the Spa via a series of blowing nozzles located on the floor or on the seats of the Spa.
