Weil-McLain WM97+70 Manual page 11

WM97+ -
gas fired water boiler
Wall-mounting the boiler
Install the wall-mount bracket and
spacer boards (by installer)
1. See Figure 4, page 10.
2. Locate the studs — must be on 16-inch centers. See previous page
instructions if studs are not on 16-inch centers.
3. Provide and prepare a spacer board (item 3, Figure 4, page 10) to be
installed as shown in Figure 4, page 10 and Figure 5. The board must
be minimum ½ inch thick. The top edge of the spacer board must
not extend higher than the top of the boiler jacket when installed.
4. Place the wall-mount bracket (item 2, Figure 4, page 10) on the
wall, using a level to align correctly.
5. Place the wall-mount bracket so the mounting slots are centered
over the studs.
6. Level the bracket and trace the outline of the screw slots with a
pencil.
7. Remove the mounting bracket and drill holes 1/4" diameter by
3 inches deep, centered on the screw slot outlines. (For metal stud
walls, using 3/16" toggle bolts, drill required clearance holes.)
8. Position the wall-mount bracket and the upper spacer board on
the wall. Insert and loosely tighten the two lag screws (or toggle
bolts for metal studs).
9. Level the wall-mounting bracket. Then tighten lag screws securely.
For drywall or plaster lathe installations, avoid tightening so much
that the space board digs into the wall surface.
10. Provide and install a lower spacer board (minimum ½ inch thick)
as shown in Figure 5.
Place boiler on bracket
1. See Figure 5. The wall-mount bracket, upper spacer board and
lower spacer board must be installed before mounting the boiler.
2. Measure 21 inches below the bottom edge of the wall-mount
bracket (item 2). Strike a line or place a piece of masking tape
with its top edge even with the 21-inch mark. (This line, or tape,
will indicate whether the boiler has been properly seated onto the
wall-mount bracket.)
The boiler is heavy
place. Wear non-slip leather gloves to prevent possibility
of cuts from sheet metal edges.
The jacket door can be left in place when handling the
boiler, but the boiler must ONLY be lifted by the bottom
and rear of the sheet metal housing — NOT by any pipe
or plastic part.
3. Obtain assistance to lift the boiler into position
4. Lift the boiler high enough that its rear bracket (item 4) will be
above the wall-mount bracket (item 2).
5. Let the rear of the boiler slide against the lag screw heads as you
lower the boiler into place.
6. When the brackets are engaged correctly, the bottom of the boiler
enclosure will be at or near the pencil line, or tape, you applied
in step 1.
7. If necessary, move the boiler sideways until the wall bracket tabs
slip into the boiler mounting bracket slots. Adjust until the brack-
ets properly engage and the boiler slips into the correct position.
When mounting the boiler, use the method described in
paragraph 2 above to ensure the brackets are properly
engaged. If not, the boiler could fall. Failure to comply
could result in severe personal injury, death or substantial
property damage.
Part number 550-142-085/0712
— Boiler Manual
, and requires two people to lift and
.
(continued)
Place boiler on wall-mount bracket
Figure 5
Mounting height MUST be as shown
in Figure 5 if the boiler is to be used
with a Companion Water Heater (CWH)
at time of installation or in the future.
1 Studs — Pre-drill through the wall into the studs ¼ inch diameter x 3
inches deep — Studs must be on 16-inch centers. If studs are any other
spacing, provide a secure, solid mounting surface on which to attach the
boiler wall-mounting bracket.
2 Wall-mount bracket — secure wall mount bracket and space bar to wall
as instructed on previous page.
3 Upper spacer board — must be installed as shown, per previous instruc-
tions.
4 Boiler mounting bracket — The two slots in the bracket on back of
boiler must engage with the two tabs on the wall bracket. This piece is
attached to the boiler. (The boiler is not shown to improve clarity.)
5 Lower space board — Provide lower spacer board pre-drilled with two
clearance holes, spaced on 16 inch centers. Board must be minimum
½ inch thick by 3½" high by 18 inches long. Use minimum two flat-head
wood screws by 2 inches long to secure the space board securely to the
studs. Clearance holes should large enough to clear the shaft of the flat-
head wood screws used to secure the board to the studs.
6 Flat-head wood screws by 2" long.
7 Floor surface
8 RECOMMENDED mounting height — this distance ensures room for
mounting a CWH unit below the WM97+ should it ever be required
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