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Modular Floor diFFusers
INSTALLATION & MOUNTING INSTRUCTIONS
Modular Floor Boot installation
The Price modular floor boots are specially designed for
mounting on the bottom of a floor tile under a modular floor
diffuser. A top plate with a discharge hole outlet ensures proper
sealing to the diffuser even when structural depressions exist
on the bottom surface of the floor tiles.
The MFB-F enables a ducted connection to a fan powered
terminal unit. It is designed to control the supply of conditioned
air to a space which has a variable occupancy schedule.
The MFB-HC is used in conjunction with heat/cool
applications. The MFB-HC comes with two (2) inlets, one (1)
for connecting to a fan powered terminal unit and the second
to admit supply air from the pressurized plenum. The MFB-HC
comes complete with a 24 VAC floating point actuator on the
inlet open to the plenum to cycle a gasketed control damper
through a 90° range of movement. The controller modulates
based on a call for cooling either directly from the building
control system, from the Price PCM (UMC3 or UMCB). A 25
foot plenum rated control cable is provided with each unit for
connecting to a controller or daisy chaining to multiple boots.
Supply air is either provided through an open connection to the
pressurized plenum or via a ducted fan powered terminal unit.
PLENUM BOOT SIZE
BOOT
SIDE
SIZE
LENGTH (A)
CENTER (D)
8B
10.000 (254)
6.750 (171)
10B
12.000 (305)
8.000 (203)
PLENUM INLET (VC, HC) & FAN INLET (F, FC)
NOM. DUCT SIZE
FAN INLET (B)
6 (152)
8 (203)
MFB-F
FOR MFB-F:
FOR MFB-F:
1.00 (25)
1.00 (25)
9.50 (241)
9.50 (241)
9.50 (241)
9.50 (241)
A
A
A
A
FOR MFB-HC:
MFB-HC
FOR MFB-HC:
1.00 (25)
1.00 (25)
9.50 (241)
9.50 (241)
A
A
A
A
12
MODuLAr FLOOr DIFFuSerS - Manual | priceindustries.com
TILE
SIDE
LENGTH (E)
LENGTH (F)
8.960 (228)
8.960 (228)
4.710 (120)
4.710 (120)
PLENUM INLET ('C)
5.88 (149)
7.88 (200)
FAN AIRFLOW
B
FAN AIRFLOW
B
A
1.00 (25)
A
1.00 (25)
FAN AIRFLOW
C
9.50 (241)
HEAT
FAN AIRFLOW
C
9.50 (241)
HEAT
A
7.00 (178)
A
7.00 (178)
INSTALLATION INSTRUCTIONS
1. Cut hole in tile (hole must be located as marked on submittal
and installation page).
2. Fasten the flange on the floor tile by screwing through the
outer hole labeled 2. The gasket will cover the holes. Ensure
that self-drilling screws are used.
3. Place MFB over flange in with small holes aligned, the large
holes provide clearance for the fastener used in Step 2.
4. Fasten MFB to mounting flange and floor tile by screwing
through holes labeled 4.
NoTe:
Adjust set screw and damper to minimum airflow for balancing.
MFB iNsTallaTioN
D
D
F
SIDE
4
PLENUM AIRFLOW
B
COOL
PLENUM AIRFLOW
B
COOL
Floor Panel
E
2
Gasket
Strip
2
4
4
Mounting
Flange
MFB
Type
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