Detroit Radiant Products Company UH Series - Manual (Page 14)

14
UH Series
Hanging the Unit Heater
To ensure proper operation, the heater must be installed in a level horizontal position. The units are
designed to be hung from the brackets (supplied) and must be field configured prior to hanging the unit.
The mechanism that suspends the heater from the brackets (e.g. lag screws, threaded rod, or threaded
pipe) must be adequate to support the weight of the unit (see page 5 for unit weights).
Suspending the Unit Using Lag Bolts/Screws
1 Determine the desired mounting points, and mark the locations for reference.
2 Using the hole spacing diagram (Figure 3.2), mark and prepare the structure mounting surface. If
necessary, weld blocks, drill holes, or install additional bracketing or steel channel.
NOTE: When bolting the unit directly to a wood truss, the recommended hardware is ¼”x 1-1/2”
(minimum) lag bolts with ½” washers. The unit must be supported by a minimum of four (4)
suspension points. Brackets are slotted to accommodate joists on 16 inch or 24 inch centers.
3 Raise the unit heater to the mounting location and secure it to the building structure using the
selected hardware. Ensure that the lag bolts are not stripped and are properly bearing the load of
the unit heater.
1 inch angle mounting brackets are slotted to accommodate joists on 16 inch or 24 inch center lines.
Figure 3.2 • Mounting Bracket Hole Spacing Diagram (in Inches)
Suspending the Unit by Threaded Rod
1 Determine the desired mounting points, and mark the locations for reference.
2 Using the hole spacing diagram (Figure 3.2) mark and prepare the structure mounting surface. If
necessary, weld blocks, drill holes, or install additional bracketing or steel channel.
NOTE: The recommended hardware is 3/8”–16 threaded rod. The unit must be supported by a
minimum of four (4) suspension points.
3 Fasten beam clamp, screw hook, turnbuckle, steel channel, or other anchoring device to the
suspension points.
4 Determine the desired mounting height. Cut four Pieces of 3/8” -16 threaded rod of equal length in
which the heater will be hung. Ensure that the threads are not damaged during the cutting process.
5 Attach the threaded rod to the unit mounting brackets, securing with a top and bottom nut. A lock
washer is preferred, or a secondary jam nut may also be used.
3.0 Installation • Hanging Heater • Suspending Unit with Lag Bolts/Screws or Threaded Rod
0.
50
7.
60
6.
03
4.4
5
2.8
8
1.
30
12
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3
18
.6
3
17.
06
15
.7
3
13
.9
1
20
.21 .0
0
21.
78
23
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6
24
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3
25
.7
3
10
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0
9.1
8
.00
0.45
0.54