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FORM 145.18-IOM2
ISSUE DATE: 06/17/2020
SECTION 1 - INSTALLATION
1. Place the cabinet in a horizontal position on the
floor adjacent to its installation location (when ris
-
ers are attached to cabinet).
The units are designed to accommodate a maxi-
mum supply and return riser stub-out movement
of 1-1/2 inches due to expansion and contraction
(total movement of 3 inches). If the total calcu-
lated riser expansion or contraction exceeds 1-1/2
inches, the field must provide expansion compen-
sation.
The initial positioning of the riser stub-out
is correct when the top of the riser pipe is
3 inches above the top of the cabinet (ap-
plies to VPT standard riser models only).
2.
Install field or factory-provided riser extensions,
if required, to the unit-mounted risers prior to
moving the cabinet into final position.
3. Raise the cabinet upright. Lower the risers through
the floor cutout, aligning the risers into the swaged
section of the unit on the floor below.
Take extra care not to scrape or dent ris-
ers during positioning. The riser tailpiece
should insert approximately 2 inches into
the 3-inch long swaged section of the unit
below.
DO NOT allow the riser tailpiece to bottom
out into the swaged section. This ensures
the correct riser positioning and com-
pensates for variations in floor-to-floor
dimensions.
4. Center the risers in the pipe chase, and level the
cabinet using shims as necessary.
5. Plumb risers in two planes to assure proper unit
operation and condensate drainage.
6. When building construction codes or safety laws
require securing the cabinets in order to prevent
accidental tipping, the field must order and install
factory isolated anchor kits (P/N VB-ANCHOR).
The kit includes isolated anchor brackets (2X) and
sheet metal screws (4X). Concrete screws used to
fasten the anchors into the floor are field supplied.
Ensure the unit has vibration isolation
pads installed. These pads are required
in order to reduce noise transmission into
the floor. If the unit does not vibration
isolation pads, order them via Source1
and install in the field. Failure to have the
isolation kits installed can result in loud
unit operation.
Do not drill or drive screws into the cabi-
net in the area of the internal drain pan.
7. Center the risers’ horizontal stub-outs (complete
with factory-installed shut-off valves) in the cabi-
net slot openings. Ensure that the stub-outs are
perpendicular to the side/back panel.
8. Verify all risers are vertical and that they pene-
trate the swaged joint at least 1 inch.
Factory provided risers come with a 3-inch deep
swage. Do not allow risers to completely bottom
out at 3 inches in the swage. The 3-inch swage
depth is oversized to allow for adjustments if nec-
essary to keep riser stub-outs and valves centered
in the cabinet opening.
9. Center the riser stub-out in cabinet opening to
allow for expansion and contraction. Riser stub-
outs must not contact on any sheet metal opening.
Otherwise damage can occur to stub-outs, result-
ing in water leaks and property damage.
Top Vertical
Riser
Bottom
Vertical Riser
2-inch Ideal
Insertion Depth
3-inch Cup
Height
LD23535
FIGURE 1 -
IDEAL RISER INSERTION DEPTH
