Massage Bathtub Installation

1 Pre-Installation Requirements

1.1 Structural Verification

Before proceeding with installation, verify that the floor can support the weight of the tub filled with water and people. 

WARNING: For installations on floors or mezzanines, consult a structural engineer to verify load capacity.

1.2 Required Space

Allow sufficient space around the tub for:

• Comfortable access for entry and exit
• Routine and extraordinary maintenance
• Inspection of hydraulic and electrical systems
• Adequate room ventilation

NOTE: Leave at least 50-60 cm of free space on at least one long side for access to the pump and technical components.

1.3 Environmental Requirements

2 Support Base Preparation

2.1 Leveling

1. Check floor flatness with a long spirit level (min 1 meter)
2. Check that there are no excessive differences in level
3. If necessary, level with self-leveling screed
4. Wait for complete drying of the screed before proceeding

WARNING: An unleveled base causes drainage problems, pump noise and possible structural damage.

2.2 Waterproofing

1. Apply waterproofing membrane on the floor
2. Extend the membrane on the walls for at least 20-30 cm in height
3. Carefully seal corners and critical points
4. Check the integrity of the membrane before placing the tub

3 Hydraulic Installation

3.1 Required Materials

• Hot and cold water supply pipes
• Drain pipe
• Trap with integrated overflow
• Shut-off valves
• Compliant gaskets and fittings

3.2 Supply Connection

1. Install shut-off valves on hot and cold water
2. Connect supply pipes to the tub fittings
3. Verify that fittings have gaskets
4. Tighten fittings without excessive force
5. Gradually open valves and check for leaks

NOTE: Always use fittings with new gaskets. Do not reuse used gaskets.

3.3 Drain Connection

1. Position the trap under the tub drain hole
2. Connect the overflow pipe to the trap (if present)
3. Check gasket seal
4. Connect the trap drain to the domestic drain network
5. Ensure the drain pipe has a minimum slope of 2%
6. Seal all connections with silicone sealant

WARNING: The trap must always be accessible for maintenance and cleaning.

3.4 Hydraulic Test

1. Close the tub drain
2. Fill the tub to the overflow edge
3. Check for leaks at all fittings
4. Open the drain and verify regular flow
5. Check overflow operation

4 Electrical Installation

DANGER: Electrical installation must be performed by qualified personnel.

4.1 Regulatory Requirements

• Compliance with CEI 64-8 standard section 701 (bathroom areas)
• Installation performed by licensed electrician
• Compliance with bathroom safety zones

4.2 Mandatory Protections

4.3 Connection Procedure

• Install 16A Schuko socket with minimum IP44 protection
• Position the socket outside bathroom zone 2 (beyond 60 cm from tub edge)
• Protect the line with dedicated <30mA residual current device
• Use socket with protected contacts

WARNING: The socket must always be accessible for emergency disconnection.

4.4 Equipotential Bonding

1. Identify all metal masses in the room (pipes, radiators, structures)
2. Connect masses to equipotential node with minimum 6mm² conductors
3. Connect the tub metal mass to the equipotential node
4. Verify connection continuity with tester

5 Tub Positioning

5.1 Handling

1. Handle the tub with at least 2-3 people
2. Lift the tub keeping it always level
3. Avoid impacts against walls or doors during transport
4. Position the tub approximately in the final position

WARNING: Never drag the tub on the floor. Always lift it completely.

5.2 Final Leveling

1. Place the spirit level on the tub edge at multiple points
2. Adjust the support feet to achieve perfect leveling
3. Check tub stability by pressing on the edges
4. Verify there are no oscillations or movements
5. Tighten the feet lock nuts once level is achieved

6 Sealing

6.1 Perimeter Sealing

1. Thoroughly clean the tub edge and wall with alcohol
2. Apply masking tape on tub and wall to delimit the area
3. Apply transparent or white sanitary silicone along the entire perimeter
4. Smooth the bead with a damp spatula
5. Remove the masking tape before the silicone dries
6. Wait 24 hours before filling the tub

NOTE: Always use acetic sanitary silicone with anti-mold properties.

6.2 Complete Functional Test

1. Fill the tub with water to normal use level
2. Turn on the system from the control panel
3. Activate the hydrotherapy pump and verify operation of all nozzles
4. Check for unusual noises from the pump
5. Test the heating system (if present) and verify it reaches the set temperature
6. Activate the air pump (if present) and verify air jet operation
7. Test all control panel functions
8. Check chromotherapy operation (if present)
9. Check proper operation of the control lock system
10. Drain the tub and verify drainage time