172-65702M-04 (SQ-C01) 10 Dec 2020
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3) Remove the mixing valve unit, holding it with two hands. Replace the mixing
valve unit to be replaced and install the new unit by following the same
procedures in reverse. Gaskets must be replaced if disassembled.
(5) Hot Water Outlet Unit
Components required (1) Hot Water Outlet Unit × 1
1) Remove the flange connected to the hot
water piping.
Be careful as residual condensate may
flow out.
2) Loosen the G threaded connector on the flexible tube. Remove hex bolts
(M4, with washer) that are holding the frame and the piping. (Be careful not
to drop the nuts.)
3) Remove the hot water outlet unit, holding it
with two hands. Remove the hot water
outlet piping unit to be replaced and install
the new one by using the same procedures
in reverse to removal. Gaskets must be
replaced if disassembled.
(6) Line relief unit
Components required: (1) Line relief Unit × 1
1) Remove the outlet piping connected to the
line relief valve. Be careful as residual
condensate may flow out.
2) Remove the U bolt holding the line relief unit. Loosen and
remove the G threaded connectors at the inlet and outlet
of the line relief unit.
