Mitsubishi Electric City Multi PWFY-P36NMU-E-BU Data Book page 60

15. INSTALLATION
Example of unit installation
[Fig. 3-1-B]
Insulation installation
The surface temperature of the water pipe would be very high, depending on the set temperature.
Insulate the pipe to prevent burns.
When operating PWFY-P36, 72NMU-E2-AU with cold water, insulate the water pipe to prevent condensation. Wrap insu-
lation material around water pipes as shown in [Fig. 3-1-C].
Any heat source piping.
Indoor piping in cold-weather regions where frozen pipes are a problem.
When air coming from the outside causes condensation to form on piping.
Any drainage piping.
[Fig. 3-1-C]
Flow switch installation
When installing the unit, be sure to install the supplied flow switch on the water outlet side of the unit and connect the wire
to IN1 of TB142A on the unit.If the flow switch is not installed, the unit will emit the error signal (2100: Interlock error) and
not operate.* A short-circuit wire is supplied, but it is only for test run.
MEES20K028
(C)
(A)
(D)
(A)
(E)
(F)
(B)
Heat insulation material (accessory)
(C) (G)
(B)
(G)
(E)
Inject with caulking material
AIR TO WATER
(A) Close valve
(B) Water inlet
(C) Water outlet
(D) Refrigerant piping
(E) Y-type strainer
(F) Drain pipe
(G) Expansion joint
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