Toto NEOREST SE User manual

0GU5081, V.01
Installation Guide
NEOREST SE
AIR BATH
Cautions and warnings……………2
Before installing the Neorest……..5
Included parts……………………...8
Required tools…………….………10
Specifications……………………..11
Dimension Drawings……………..13
Installation Procedure…………....15
Meaning of the indications……….15
Building a base for the bathtub….16
Installing the function module……20
Testing the operation……………..24
Finishing……………………………34
Installing the controller stand…….37
Cleaning the filter………………….41
Error Codes………………………..44
To installation contractors:
If possible, please explain the functions of the NEOREST and how to use them to the
customer. In new buildings or other places where there will be a significant time until
the customer uses the product, please shut off the power.

2
CAUTION WARNING
Cautions and Warnings
! !
!
WARNING
Before installing your NEOREST, be sure to read the following installation instructions. Install the prod-
uct only as described in this guide. Follow all safety precautions and warnings.
When this appears next to a
topic, this indicates that mi-
soperation could result in death
or serious injury.
When this appears next to a topic,
this indicates that misoperation
may result in injury or physical
damage.
Symbol example
This symbol indicates something
that is prohibited.
This symbol indicates something
that must be done.
!
Do not install the tub with the rim surface as its sole support.
●Doing so could cause damage.
Do not stand on the bathtub while working.
●Doing so could cause one to slip and fall or could otherwise damage the product.
Only assemble the parts delivered or indicated. Do not change these parts
●In particular, do not change the dimensions.
Do not install the function module in a humid location such as a bathroom or a place
prone to flooding.
●Otherwise product problems or electric shock could result.
Prohibited
Install securely, in accordance with the Installation Guide.
●Improper installation can lead to electric shocks or fire. Additionally, it could cause water
leaks that damage or ruin household property.
Install the drainage pipes securely, in accordance with the procedure.
●Improper installation could lead to leaks that damage or ruin household property.
After unpacking, immediately dispose of unwanted packaging materials.
●There is a risk of injury from the wooden frame, nails, cardboard boxes, vinyl bags or seal-
ing straps. Additionaly, ensure that children do not play with the packaging materials as this
could lead to suffocation or other accidents.
All the operations related to the electrical system must be implemented by a certified
electrician.
●Improper operation could result in physical damage or material damage.
All electrical equipment connected to the bathtub must be fitted with a ground fault
circuit interrupter (GFCI).
The bathtub must be connected to the drinking water supply.
The earth (ground) wire must be connected without fail.
Perform a potential equalization, and connect the plug to the bathtub frame.
●Improper ground connection could allow ground loops.
The voltage used must be the specified AC voltage.
●Use of different voltage could cause damage to the equipment, malfunction or fire.
Required
!

3
WARNING
!
Required
!
After the installation, test the ground fault circuit interrupter (GFCI) protecting this
appliance and periodically check it in accordance with the manufacturer’s instruc-
tions.
●An improperly functioning GFCI could lead to electric shock or fire.
Be sure that the equipment is installed in a stable place with sufficient load-bearing
strength, as set forth in the Installation Guide.
●Improper installation could cause the equipment to fall or topple over, causing injury.
When installing the function module using a metal lath or wire lath support, be certain
not to connect the function module and support electrically.
●Doing so could lead to electric shock, overheating or fire.
When connecting the wiring, be certain that the power supply is not turned ON.
●Doing so could lead to electric shock.
The electronic components must be installed out of the reach of users in the bath-
room. (However, this rule is not applied to ultralow voltage supply components at 12
V or less, such as remote controllers.)
 Otherwise, an electric shock could result.
 The function modules must not be installed in the bathroom.
The electronic components must be fixed so that they will not fall into the bathtub.
 Otherwise, an electric shock could result.
 The function modules must not be installed in the bathroom.
CAUTION
!
Do not place anything heavy on the tub or anything in the tub for standing on.
●Doing so could cause damage.
Do not drop any heavy or hard objects in the bathtub.
●Injury may result from cracks in the bathtub or leaking water may contaminate or ruin
household property.
Keep sources of heat at a distance.
Do not smoke.
●Otherwise there is a risk of damage.
Prohibited
Ensure that you have an ergonomic working position during transport and assembly.
●Take care at every stage that your move is safe. Ensure that you have assistance to avoid
risk of accident or injury.
Observe the current local prevention of accidents and building regulations as well as
sanitary and environmental protection rules during installation.
Do not install the bathtub outdoors or in a location where it will be constantly exposed
to sunlight (for example, in a sunroom).
●Otherwise there is a risk of frost damage or discoloration.
Do not bend the hoses or cables.
When transporting the bathtub, do not carry by the hoses or plumbing or strike it with
anything hard.

4
CAUTION
!
If installing the product in a location where damage from water leaking from the func-
tion module is anticipated, be sure to waterproof the floor.
●If there were to be a leak, it could damage the floor or floors below.
On opening the box, check that the bathtub and parts supplied are not damaged. Do
not use any parts that are damaged.
●Replace any damaged parts.
Do not remove the protective sheet on the bathtub until installation is complete.
Ensure the bathtub can be used and maintained adequately.
●Consider water splashing from blocked shoulder warmers.
Check for leaks after installation is complete.
●Shut off the water supply if you discover any leaks and immediately repair them.
Required
!

5
Before installing the NEOREST
 The function module must not be installed in the bathroom.
In addition, the function module is not waterproof and should not be installed outdoors.
Be sure to install the function module indoors other than in the bathroom.
 The function module requires a hot water supply temperature of at least 140°F (60°C). (No
more than 158°F (70°C))
If the supply temperature of the hot water is too low, it won’t be possible to fill the tub to the temperature
setting of the controller. The function module mixes the supply of hot and cold water and runs hot water
out of the fill-tub outlet, so the temperature of the water flowing out will be lower than the temperature of
the water being supplied to the function module.
 The pressure of the hot and cold water supplied to the function module must be at least 29
psi (0.20 MPa) (when flowing). (No more than 108.75 psi (0.75 MPa))
The difference of water pressure between cold water and hot water should be such that the cold water is
kept higher and within 14.5 psi (0.10 MPa). If the pressure is low, the water won’t flow out like a water-
fall. Additionally, it will take longer for the tub to fill with hot water.
 Supply Equipment Specifications
Supply Pressure: 29 to 108.75 psi (0.20 to 0.75 MPa)
Supply Temperature: 140 to 158°F (60 to 70°C)
Hot Water usage:
Max. temperature 113°F (60°C)
Max. flow rate 9.2 gpm (35 L/min)
Max. capacity approx. 144 gallons (545 L)
 The diameter of the function module connector is NPT 3/4. Please do not make the diameter of the
plumbing smaller than the diameter of the connector to the function module. The use of equipment
below full capacity could lead to problems for the customer.
 Use a sealant on the taper thread joint.
 It is necessary to have space between the end of the drain hose and the drain. If not the water
could backflow.
 Power supply connection The power inlet of the function module must be connected to the per-
manently installed power outlet (cable).

6
Function module installation locations
 Install the function module indoors, in a room other than the bathroom.
 Please leave a space of at least 24 inches (600 mm) in front of the equipment so that inspections or
repairs can be made. Also, please do not locate it on a second-story wall or other place without ac-
cess.
 Please take the following into consideration when deciding where to place the function module. The
length of the cables to the equipment (pumps and the like) that will be installed with the bathtub are
49 ft (15m).
 If the tub installation is downstairs the function module should be
within 23 ft (7 m) of the top of the tub.
 If the tub installation is upstairs the function module should be
within 23 ft (7 m) of the top of the tub. In this case the supplied
water pressure should be 29 psi (0.20 MPa) above head pres-
sure.
 Be sure to install it on a vertical wall.
 The plumbing that is connected to the equipment should be in-
stalled so that there will be no safety problems with respect to
earthquakes, other vibration or physical impact and caulking ma-
terial should be used to seal the points where the hot and cold
water and the power lines pass through the walls.
Precautions when plumbing
 If the plumbing materials are specified by the relevant local and national plumbing authorities, com-
ply with those specifications.
 Be sure to flush filings, sand and debris from inside the pipes using water before connecting the
function module.
 Use a union junction or similar means on the connection port and do not use excessive force.
 The diameter of the pipe is not to be less than the diameter of the function module connector (NPT
3/4).
 When the water pressure is high, either install a pressure-reducing valve or a device to prevent
“water hammer”. (Recommended water pressure: 29 to 108.75 psi (0.20 to 0.75 MPa) However,
limits set by local and national plumbing authorities should not be exceeded.)
 Keep the number of unions as small as possible and do not use complicated plumbing. Additionally,
do not plumb in such a way that air can become trapped in the pipes.
Hot and cold water supply plumbing
 Install an anti-backwash valve, a shut-off valve or a shut-off valve with an anti-backwash valve near
the hot and cold water supply ports.
 In order for the customer to have a pleasant experience using this equipment, a hot and cold water
supply pressure of 29 to 108.75 psi (0.20 to 0.75 MPa) is required. If the water pressure is low, the
equipment will not function properly and could lead to trouble with the customer, so be prepared to
install a booster pump as a countermeasure.
Fill-tub plumbing
 The pipes that are used with the fill-tub feature are to have a maximum length of 49 ft (15m) and 10
changes of direction.
 Please incline the pipes so that it will be easier to remove water from the pipes when draining water

7
Shower Installation Conditions
1. Confirmation of water pressure
●Supply hot/cold water pressure:
Minimum required water pressure (when flowing): 11.6 psi (0.08 MPa)
Maximum water pressure (when not flowing): 108.75 psi (0.75 MPa)
●If the supply water pressure exceeds 108.75 psi (0.75 MPa) please reduce the pressure to
around 29 psi (0.20 MPa) using a commercially available pressure-reducing valve.
2. Confirmation of hot water supply temperature
●Please keep the hot water supply temperature no higher than 158°F (70°C).
●Please do not use steam in place of a hot water supply.
3. Plumbing
●Please do not connect the hot and cold water backward.
●Please install the hot water supply pipe at the shortest distance from the water heater to
reduce the resistance.
4. Local and national codes
●Adherence to all local and national codes is required and take precedence over requirements
listed in this manual.
5. Tempering valve (supplied)
●The shower hot water output will be limited by the tempering valve. The tempering valve is
preset to 105°F (41°C)
●Check codes for compliance and adjust if needed. The tempering valve is located under the
shower near the tub frame. Below is the method of adjustment.

8
Included Parts
Instruction Manual
■Bathtub
Installation Guide Cleaning spatula for
shoulder-warmer water
outlet
Items A-6 and A-8 should be passed on to the customer after installation is complete.
Bathtub
Assembly
Pillows
Feet fixing
molds
Polyethylene
foam sheet
Connecting
Harnesses

9
■Controller stand
■Function module
Slip Ring
Assembly
Controller
Stand
Assembly
Base Cover
Base Assembly
Base mounting screws
Controller
Branch
Harness
Set Screws

10
Required Tools