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2. Before Use
Utility connection work
③
When the wiring has been connected, turn on breakers and push the Exhaust blower
operation switch on the control panel to check the rotational direction of Exhaust and Supply
blowers. If the rotational direction is incorrect, replace 2 of 3 wires U1, V1, and W1 on the
terminal block each other to rotate the fan in the proper direction.
Water piping connection work
The end of rising piping is a flexible tube with it end threaded (nominal diameter 1/2 B, male or
female). Connect this end to a primary piping such as a riser from the floor.
Gas piping connection work (optional)
The end of rising piping is a flexible tube with it end threaded (nominal diameter 1/2 B, male or
female). Connect this end to a primary piping such as a riser from the floor. Ask an authorized
local company for connection of piping.
Drain piping connection work
The size of drain port of this product is as shown in “11. Specifications (P. 40)”. Connect this line
to a primary piping such as a riser from the floor by using vinyl chloride tube for draining. For
product to which a spot sink made of epoxy resin or ceramic steel plate is installed, no bell trap
is attached. For the purpose of deodorization and drainage block prevention, install a dram trap
(ceramic).
Duct connection work
The size of ventilation duct outlet of this product is as shown in “11. Specifications (P.40)”.
Perform the ventilation duct connection works with vinyl chloride ducts, etc.
