Factory Direct Hardware Toto ABA990X#01FCP - Manual (Page 28)

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(4) Function module installation
➀ Drill the pilot hole in the position determined for the screw and pound in the tapping anchor (arranged on site).
➁ Replace the function module on the tapping screws and fix the tapping screws (two above and two below) into place.
➂ Waterproof the area so that water cannot get into the building from the screws that secure the equipment.
(5) Plumbing the equipment
■
■ Precautions when plumbing
• If the plumbing materials are specified by the relevant local and national plumbing authorities, comply 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 (3/4).
• When the water pressure is high, either install a pressure-reducing valve or a device to prevent "water hammers."
(Recommended water pressure: 29 to 108.75 psi (0.20 to 0.75 MPa)).
• 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 49.2 ft (15 m) and 10 changes of
direction.
• Please incline the pipes so that it will be easier to remove water from the pipes when draining water from the pipes.
• Please allow sufficient space for the end of the water-removal pipe and the drain opening.
If there is no space, backed up water could flow back inside.