Piping Installation - Trane UV-SVN02B-EN Installation Operation & Maintenance

Piping Installation

NOTE: Before installation of piping
package, the shipping bracket holding
the piping in place, must be removed.
Proper installation of piping is neces-
sary to provide efficient coil operation
and to prevent damage during opera-
tion. Follow standard piping practices
and include all accessories as neces-
sary.
Piping connection knockouts are shown
in Figures 6 through 14. Field connec-
tion types and sizes for units without
piping packages are listed in Table 7.
A 3/4'' OD condensate drain connection
is provided on the chilled water supply
end of the unit. Figure 24 shows the
vertical unit connection. Attach a flexi-
ble condensate drain hose over the
drain pan connection and secure with a
hose clamp.
The drain pan on the vertical is vacuum
molded with a drain connection at each
end. The cooling side connection is cut
at the factory.
To field reverse the slope of a vertical
Table 7: Coil Data
Coil Description
A 2-pipe chilled water/Hot water
H Hot water only
D 4-pipe chilled water/Hot water
X Chilled water/Electric heat
K1, 2
DK Chilled water/Steam
R 2-pipe chilled water/Reheat hot water
E Electric heat only
F0 DX only
FA DX/hot water
FK DX/Steam
F3, 4, 6 DX/Electric heat
Notes:
1. Supply and return connections are located on the same end of each coil.
2. All Trane piping packages have union connections; all units with piping packages by others have sweat connections.
3. Coil connections are sweat except steam coils, which are threaded
24
Installation
Screw
here for
right side
drain
Screw
here for
left side
drain
Figure 24: Drain pan connection. Field
install a flexible hose for condensate
drainage.
unit drain pan, plug the factory cut con-
nection and cut the membrane of the
connection on the other side. Then
reverse the screws on each corner of
the drain pan. Example: To drain to the
right, put the right-hand drain screw in
the top hole and the left-hand screw in
the bottom hole. (See Figure 24) .
The drain pan on the horizontal unit is
internally pitched. To field reverse,
Steam
Condensate
hose connection
Connection Location
Left or Right
Left or Right
Left or Right (opposite ends)
Left hand cooling/Right hand heat
Left or Right
Left or Right
Left or Right
Right hand heat
Left hand cooling
Left hand cooling/Right hand heat
Left hand cooling/Right hand heat
Left hand cooling/Right hand heat
remove the screws and drain pan,
rotate the pan and reinstall.
After the condensate drain piping has
been completed, check water flow to be
sure the system properly carries and
away all condensate accumulation.
A P-trap is recommended for installa-
tions that drain directly into a sewer
system. A P-trap is not necessary for
operation but will eliminate sewer gas
odor.
Trane Piping Packages (Option)
Trane Standard Piping Package includes
a 2-way or 3-way valve with bypass bal-
ance valve, ball valves, Pete's plugs and
unions. A strainer and circuit balancing
valve are optional.
All union connections should be tight-
ened in the field. Units are shipped with
union connections hand tightened only
in the factory.
NOTE: All connections made in the
field should be sweat connections.
NOTE: Piping packages are not shipped
insulated. Any insulation should be
provided in the field by the installing
contractor.
Field Coil Connection
7/8" OD male sweat
7/8" OD male sweat
7/8" or 5/8" OD male sweat
7/8" OD male sweat
1" MPT
7/8" OD/ 1" MPT
7/8" or 5/8" OD male sweat
NA
7/8" suction, 3/8" discharge
7/8" suction, 3/8" discharge/
5/8" OD Male sweat
7/8" suction, 3/8" discharge/ 1" MPT
7/8" suction, 3/8" discharge/NA
UV-SVN002-EN