172-65605M-14 (SQ2/SQ4/SQ6) 10 Dec 2019
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Piping Work
For applications such as handwashing in which hot water directly
touches hands, when using the one-pass method, make sure to
install a thermostatic mixing valve on the outlet.
Failure to observe this precaution may result in burns, as hot water at
a temperature higher than the set temperature may flow due to load
fluctuations.
WARNING
To use the unit safely and properly, read this instruction manual
carefully to carry out the specified work. Installation, moving and
incidental work of the unit requires professional qualifications and
skills. The work should be carried out by a qualified personnel. Once
installation is complete, make sure that the work is carried out
based on the instruction manual.
Work carried out improperly may lead to accidents or unit
malfunction.
CAUTION
Do not use well water or water from a hot spring.
Depending on the water quality, foreign matter may adhere to, or
corrosion may occur in, the unit piping, resulting in water leaks. In
this case, there will be a charge for repair work even during the
warranty period.
CAUTION
Make sure that work (such as transportation, installation, welding or
wiring) requiring a special license is carried out by qualified
personnel. Improper work may lead to falls, heat generation, injuries
due to electrical leakage, fire or damage.
CAUTION
After completing work on the piping system, perform a final
inspection to make sure all piping connections are tightened, all
gaskets are installed, and that all installations are stable and secure.
Improper piping work may lead to fluid discharge, resulting in injury,
burns, damage, etc.
CAUTION
The unit consists of steam-using equipment and piping. Proper
insulation should be installed to avoid burns or heat loss. Steam piping
is hot, and even hot water piping may reach temperatures of up to
95
°
C. Insulate piping, as touching piping directly may result in burns.
CAUTION
Do not climb on the components of the unit. The unit is not designed
to be climbed on by people. Failure to observe this precaution may
lead to injury, failure or abnormal operation due to deformation of
the unit.
CAUTION
After completing construction of the entire piping system based on
the system flowchart, perform a final inspection to make sure all
piping connections are tightened, all gaskets are installed, and that
all installations are stable and secure. Improper piping work may
lead to fluid discharge, resulting in injury, burns, damage, etc.
CAUTION
The unit should be operated in accordance with the proper
operating steps, within the specifications of the unit, such as the
maximum allowable pressure (PMA) and maximum allowable
temperature (TMA). Refrain from sudden operation of any valves.
Failure to observe these precautions is dangerous and may result in
damage to the unit, malfunctions or failure of the unit, or lead to
serious accidents.
CAUTION
