Midea MFA3T-96CRN1, Technical & Service Manual

Page: 69 / 111

MCAC-UTSM-201707 Midea R410A T3 50Hz Top-discharge Series
68
6. Heat Insulation of Pipe
In order to prevent faults caused by condensate of the refrigerant pipe and drain pipe, perform
condensate prevention and heat insulation properly.
Note:
If it is forecast that high humidity and temperature environment (Condensate temperature is
over 23°C) may exist in the ceiling, e.g., inside the ceiling with slab, ceiling which is in the same
environment as the outdoor air. It is necessary to apply 10mm or thicker adiabatic wool
(16~20kg/m
2
) to the refrigerant pipe and the drain pipe in addition to applying the general heat
insulation materials. Enough heat insulation materials should also be applied to the refrigerant
joint and the pipe joint.
Note
: the heat insulation of drain pipe refer to the installation of indoor unit.

Be sure to entwine heat insulation materials round the drain pipe which runs through the room.

Carry through heat insulation for the drain pipes thoroughly.

Please use heat-resistant materials as heat insulation material of the air-side pipe. (e.g., EPT)

Cover heat insulation materials separately at the liquid side and the air side. Moreover, perform
heat insulation thoroughly for the air-side pipes of the indoor unit, and prevent water from
dripping outside the unit.

After applying the auxiliary heat insulation materials, use vinyl resin tape to seal refrigerant pipe
and drainage pipe to prevent water leak.