Velocity K2WTC-135, Installation, Operating And Service Instructions

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A. Wall Mounting
1. If the boiler is installed on a framed wall, minimum acceptable framing is 2 x 4 studs on 16” centers. The
boiler mounting holes are on 16” centers for installation between two studs at the standard spacing. In
cases where the boiler cannot be centered between the studs, or where the studs are spaced closer than
16” apart, the boiler may be anchored to ¾” plywood or horizontal 2 x 4’s anchored to the studs.
2. 5/16” x 2” lag screws and washers are provided for mounting this boiler. These lag screws are intended
for mounting the boiler directly onto studs covered with ½” sheathing. When the boiler is attached to other
types of construction, such as masonry, use fasteners capable of supporting the weight of the boiler and
attached piping in accordance with good construction practice and applicable local codes.
3. Make sure that the surface to which the boiler is mounted is plumb.
4. Before mounting the boiler, make sure that wall selected does not have any framing or other construction
that will interfere with the vent pipe penetration.
5. Once a suitable location has been selected for the boiler, and any needed modifications have been made
to the wall, use Figure 5.1 to locate holes “A” and “B”. Make sure that the horizontal centerline of these
holes is level. Holes “C” and “D” may also be drilled at this time or after the boiler is hung on the wall. If the
5/16” x 2” lag screws are used, drill 3/16” pilot holes.
6. The wall mounting hook is used to secure the boiler to the shipping pallet. Remove this hook from the
pallet and secure to the wall using the 5/16” x 2” lag screws and washers, or other suitable anchors as
appropriate (Figure 5.2). Make sure the hook is level.
7. Hang the boiler on the wall hook as shown in Figure 5.2.
8. If not already done in Step (5) locate and drill holes “C” and “D” using the obround slots in the bottom
mounting flange. Secure the bottom flange to the wall using the 5/16”x 2” lag screws, or other fasteners as
appropriate (Figure 5.2).
9. Verify that the front of the boiler is plumb. If it is not, install washers at holes “C” and “D” between the
bottom mounting flange and the wall to adjust.
V. Mounting The Boiler
This boiler weights as much as 126 pounds:
• Two people are required to safely lift this boiler onto the wall mounting hook.
• Make sure that wall mounting hook is anchored to a structure capable of supporting the weight of
the boiler and attached piping when filled with water. Jurisdictions in areas subject to earthquakes
may have special requirements for supporting this boiler. These local requirements take precedence
over the requirements shown below.
CAUTION