Instruction Manual

PIPING
MB, MB-HW: Installation, Operation, and Maintenance Instructions
7
NOTE: Coil freeze protection is recommended for applications where the fan coil is
located in ambient air locations (attics, crawl spaces, etc.) or within structures
that may be unoccupied during freezing conditions. Consult the factory for
additional information.
Condensate drain lines must be installed with adequate slope away from the
unit to assure positive drainage. Since the drain pan is located on the suction
side of the blower, a negative pressure exists at the drain pan and a minimum
trap of 1-1/2 inches provided in the drain line to assure proper drainage.
WARNING: On units with plastic drain pans the drain connections must be made hand
tight only.
AUXILIARY
CONDENSATE
SWITCH
Auxiliary condensate switch may be installed in lieu on auxiliary drain line as
permitted by local code.
PIPING INSULATION
Installing Contractor - After the system has been proven leak free, all lines
and valve control packages must be insulated to prevent condensate drippage
or insulated, as specified on the building plans.
NOTE: Many valve packages will not physically allow all components to fit over an
auxiliary drain pan. It is the installers responsibility to insulate all piping to
ensure adequate condensation prevention.
NOISE
These fan coil units are designed for quiet operation, however, all air
conditioning equipment will transfer some amount of noise to the conditioned
space. This should be taken into consideration when planning the location of
the equipment.