16
110328-04 - 2/23
ALTA
Installation, Operating & Service Instructions
Figure 6-4: Mounting Boiler on Wall
6
Preparing Boiler
(continued)
Figure 6-3: Wall Layout and Mounting Holes
1. Wall bracket is designed to mount on studs
with 16 in. (406 mm) centers or a masonry
wall. For other stud spacing, mount bracket
to 3/4 in. (19 mm) plywood or horizontal 2 x 4
anchored to studs.
CAUTION
Heavy Object.
Do not mount boiler to a hollow wall. Boiler must
be anchored to studs.
2. Mark wall bracket hole locations using dimensions
shown in Figure 6-3. Ensure bracket is level.
3. For wood studs, drill 3/16 in. (4.8 mm) pilot holes
"A" and "B" and attach bracket using provided
5/16 in. x 2 in. lag screws and washers. For wood
studs with drywall or paneling greater than 1/2
in. (12 mm) thick, metal studs, or masonry wall,
use anchors suitable for boiler weight and
appropriate for wall material.
4. Hang boiler on wall bracket. See Figure 6-4.
5. Attach bottom retaining clips to boiler and mark
hole locations. Drill 3/16 in. (4.8 mm) pilot holes
"C" and "D" and attach to wall using provided 5/16
in. x 2 in. lag screws or other anchors appropriate
for wall material.
6. Verify boiler is level and plumb.
!
Mount Boiler
30" (762mm)
.4" (10mm)
1" (25mm)
9" (229mm)
14" (356mm)
1" (25mm)
5" (127mm)
11" (279mm)
14" (356mm)
16" (406mm)
A
B
C
D
Boiler Outline
C L
Vent
Air
Boiler Supply & Return
C L
Gas
C L
Condensate Drain
C L
C L
2 X 4
Wood Stud
Drywall or other
sheathing
Boiler
Wall Bracket
(2X)
Retaining Clip
(4X) 5/16" X 2"
Lag Screw
(4X) 5/16" Flat Washer
See detail
Installed Retaining
Clip Detail
Support
Rail
Rear of
Boiler
Retaining
Clip
