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INSTALLATION – UNIT MOUNTING
CAUTION
Do not install units below 7' measured from the bottom of the
unit to the floor in commercial applications (unless unit is
properly guarded to provide user protection from moving
parts) and 5' measured from the bottom of the unit to the
floor in residential applications.
IMPORTANT
When mounting the unit to the joists, do not compress the
vibration isolators by over tightening the lag bolt screws into
the joist. Doing so will greatly reduce the ability of the
isolator to dampen vibration.
1.
Be sure the means of suspension is adequate to
support the weight of the unit (see Table 8.1 for unit
weights).
2.
Before lifting the heater for suspension, based on the
mounting orientation selected (refer to Figure 3.1), the
mounting brackets must be installed on the unit as
follows:
For Horizontal Air Delivery Orientations:
a)
Position the brackets on the top of the unit as
shown in Figure 4.1.
For Vertical Air Delivery Orientations:
a)
Position the brackets on the side of the unit as
shown in Figure 5.1. Note the following:
•
For 10" or 12" deep joists, the bracket can be
oriented as shown in the top picture.
•
For 12" deep joists, the bracket can be oriented
as shown in the bottom picture for additional
headroom. Refer also to Figure 5.2.
•
If required, louver blades can be flipped to
change the direction of airflow control. To do
so, remove the spring loaded deflector blades,
turn them over, replace, and adjust so they are
open and in a position to direct the heated air.
For All Units:
b)
Secure the brackets to the unit with the 3/8"-16 x 1"
Hex Bolts and 3/8" Lock Washers included with the
bracket kit. The bolts thread into the retaining nuts
that are located in the top of the unit casing.
c)
Repeat for the bracket on the left side of the unit
(not pictured).
d)
Install the vibration isolators that were supplied with
the unit (see Figure 4.1) by inserting the smaller
diameter pieces through the ¾" diameter holes from
the top side of the bracket. The larger diameter
pieces are fitted from the bottom side. The outer
diameter of the top mounted pieces will friction fit
into the inside diameter of the bottom pieces.
4
3.
With the brackets installed on the unit, the unit can be
installed to the ceiling joists or trusses as follows (refer
to Figure 5.2):
•
The bracket mounting hole locations accommodate
joists on 16" centerlines.
•
Use (4) 1/4" lag bolt screws (supplied by others) that
are at least 3" long. The (4) 1-1/2" x 1/4" Fender
Washers (supplied by Modine) must be placed
between the lag bolt screw and bottom vibration
isolation piece
•
Install the lag bolt screws until the top of the isolator
just touches the bottom of the joist. Do not
compress the isolator by over tightening the lag bolt
screw. Doing so will greatly reduce the ability of the
isolator to dampen vibration.
Figure 4.1
Bracket Installation for Horizontal Air Delivery
Item
Qty (total for unit) - Description
Qty (4) – Hex Bolts, 3/8"-16 x1"
Qty (4) – 3/8" Lock Washers
Qty (2) – Mounting Brackets
Qty (4) – Retainer Nuts , 3/8"-16
Qty (4) – Two-Piece Vibration Isolators
Qty (4) – 1-1/2" x 1/4" Fender Washers
(used when the unit is installed to the joists)
Note: Figure 4.1 shows the unit with standard right hand piping
connections. See page 3 for instructions on reversing the piping
access side.
1-500
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