Before Installing The Neorest - Toto NEOREST SE Installation Manual

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).
5