172-65702M-04 (SQ-C01) 10 Dec 2020
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6) Remove the heat exchanger unit to be replaced and install the new unit by
following the above procedures in reverse. Gaskets must be replaced if
disassembled.
(3) Pre-mixing Valve
Components required: (1) Pre-mixing Valve
Replacement Kit × 1
1) Loosen and remove the cover of the
pre-mixing valve.
2) Take out the replacement parts.
(Do not forget to take out the part to be
replaced.)
3) Insert the replacement kit for the
pre-mixing valve. Tighten the cover.
(Tightening torque of the cover: 40 N
m)
(4) Mixing Unit
Components required: (1) Mixing Valve Unit × 1
1) Loosen the G threaded connector on the
flexible tube connected to the mixing valve
unit. (Two locations)
Loosen the union that is connecting the
mixing unit and the pre-mixing unit and
remove the screw.
2) Loosen nuts of the U bolt in two locations
fixing the mixing valve to the base and
remove the U bolt.
