Fan Coil Unit - Risers Installed Separately - Trane FCV Installation, Operation And Maintenance Manual

Installation - Mechanical
the riser, the anchor point will be at the mid point
between two sets of loops. For example, in a 30-story
building, typically there will be expansion loops on
floors 10 and 20, with anchors on floors 5, 15, and 25.
After anchoring, the risers are in effect attached to the
building structure so it does not matter if the plastic
straps holding the risers to the unit break off after
installation.
5. Connect the risers by soldering (not brazing) using
typical 95/5 solder. An additional cap of typical 50/50
solder can be added for extra strength.
6. If a riser expansion loop is required, add it in the field.
7. Make good the riser insulation between floors.
8. Fire stop the floor opening in accordance with code.
Figure 6. Typical fan coil installation
5
6
F
1
7
F
20
L=F=2 in.
2
89 in.
L
3 4
89 in.
L
Table 9. Typical fan coil installation
Fan coil unit
Riser package, factory attached to side or back of fan coil unit
Rectangular opening in cast floor slab
Floor slab
Top of riser pipe expanded. Two-inch insertion of pipe from
above
Riser expansion loop (field supplied)
Field supplied spool piece (if required)
Notes:
• If dimension "F" exceeds nine feet, spool pieces
between floors are required, field installed.
• Firestopping in the floor opening is by the contractor.

Fan Coil Unit - Risers Installed Separately

1. The rectangular opening is made in the floor slab,
usually sleeved before pouring the floor. If not formed
during the pour, then core drilling may be necessary. It
may be necessary to x-ray the slab to avoid rebar.
2. Install risers using the dimensions in the submittal for
locating the riser stubs vertically and at the correct
horizontal center lines. Anchor the risers and make
good the insulation. Fit fire-stop into the opening in the
floor slab. The risers can be pressure tested at this
stage.
3. Bring the fan coil into the room using a two-wheeled
hand truck. Remove and discard the temporary branch
loop support bracket. Push the fan coil into position so
that the riser stubs and ball valves penetrate the back
or side of the fan coil. Attach the stainless steel braided
hose to the piping package and to the riser shut off
valve. Cut the P-trap to the below size. Attach the
flexible drain hose to the condensate stub. Shim the
unit so that it is vertical.
Figure 7. P-trap size
Table 10. P-trap size when installed on back of unit
Cutoff Dimension
Size 3.04
Size 6.08
Size 10.12
A B
2.20-in. 8.50-in.
2.20-in. 8.50-in.
2.20-in. 2.00-in.
UNT-SVX041D-EN