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General: MPVS Series multi-port
ventilators are highly versatile continuous
duty rated fan units for residential and
light commercial applications, and meet
ENERGY STAR effi ciency criteria for
low energy consumption. The most
popular use is central continuous exhaust
ventilation of bathrooms, kitchens, laundry
rooms, and other rooms where humidity
is a controlling factor, since the fan has a
single exhaust discharge duct directly to
the outdoors.
The principle advantage of the MPVS
central exhaust system is the assurance
of controlled indoor air quality ventilation
and the elimination of standard noisy bath
fans, with the obvious benefi ts of reduced
penetrations to the exterior of the building.
With the increased tightness of construction
for energy effi cient buildings, there is a
growing need of mechanical ventilation for
indoor air quality. These fans are designed
to serve this purpose as well, by providing
effective bathroom ventilation, with the
ability to run intermittently or continuously
as needed. The quiet, energy effi cient
permanent split capacitor external rotor
motor has permanently sealed bearings
that provide many years of maintenance-
free performance.
Construction: The MPVS fan is
constructed of heavy gauge galvanized
steel to prevent corrosion caused by
moisture. The cabinet is internally lined
with UL rated, acoustic closed-cell foam
vapor barrier insulation. This allows
installation directly above living spaces,
or in unheated plenum spaces without
concern for noise or condensation.
Fan and Motor: The fan motor is an energy
effi cient permanent split capacitor type,
of external rotor design. Totally sealed to
protect against moisture and contaminants,
it is approved for use to remove steam
and moisture in kitchen and bath areas.
The motor incorporates permanently
lubricated sealed bearings and automatic
reset thermal overload protection. It is
designed and certifi ed for continuous duty
or intermittent operation.
The fan uses a backward inclined
impeller design that minimizes dust from
collecting on the blades and affecting
airfl ow performance. Each fan is statically
and dynamically balanced in the factory
to eliminate vibration and ensure quiet
DROP DOWN
HINGED
ACCESS
PANEL FOR
SERVICE AND
INSPECTION
MODEL MPVS 100 AND 120
INSTALLATION INSTRUCTIONS
(Supplement to RDF 09/08)
DIMENSIONS:
MPVS 100 and 120
Duct Confi guration(s) 313, 323, and 333
ELECTRICAL AND AIRFLOW PERFORMANCE
Model
Nominal
RPM HP Volts
Watts at
.2" Ps
MAX.
AMPS
CFM vs. Static Pressure*
0" .2" .4" .6" .8"
MPVS-100 2980 0.03 120 22 0.19 108 88 68 48 25
MPVS-120 3135 0.05 120 38 0.29 143 128 112 95 74
*Certifi ed airfl ow rating at 0.2" w.g. is derated from actual test results per HVI Certifi cation
procedure 920.
02/09
INSTALLATION
OPERATION
MAINTENANCE