Mechanical Requirements - Trane LPC Install And Operation Instructions

Duct Connections
WARNING
Hazardous Voltage w/Capacitors!
Disconnect all electric power,
including remote disconnects and
discharge all motor start/run
capacitors before servicing. Follow
proper lockout/tagout procedures to
ensure the power cannot be
inadvertently energized. Verify with an
appropriate voltmeter that all
capacitors have discharged. Failure to
disconnect power and discharge
capacitors before servicing could
result in death or serious injury.
Install all air ducts according to the
National Fire Protection Association
standards for the "Installation of Air
Conditioning and Ventilation Systems
other than Residence Type (NFPA 90A)
and Residence Type Warm Air Heating
and Air Conditioning Systems (NFPA
90B).
For units without internal isolation, inlet
and discharge air duct connections to the
unit should be made with a flexible
material minimizing noise and vibration.
Typically, about three inches is needed for
this connection to rigid ductwork.
For units with internal isolation, flexible
material is not required on the inlet and
discharge air duct connections.
Inlet and discharge air duct connections to
the unit should be made with a flexible
material minimizing noise and vibration.
Typically, about three inches is needed for
Table I-MR-1. Condensate Piping Sizes
Unit Size 3
Main Drain (in) 0.75
Main Drain (cm) 1.905
Auxiliary Drain (in.) 0.75
Auxiliary Drain (cm) 1.905
LPC-SVX01C-EN
Installation
this connection to rigid ductwork.
Duct turns and transitions must be made
carefully to minimize air friction losses.
Avoid sharp turns and use splitters or
turning vanes when elbows are neces-
sary. Make turns in the same direction of
rotation of the fan. Discharge ductwork
should run in a straight line, unchanged in
size or direction, for at least a distance of
1- 1 / fan diameters
2
Condensate Drain
Connections
The main drain line and the trap must be
the same size as the drain connection.
Refer to Table I-MR-1 for drain line sizes.
Refer to Figure I-MR-1 for a guide to trap
sizing.
Drain traps must be primed. If they are
not, the trap is essentially non-existent
and the drain will likely overflow.
Plug or trap the auxiliary drain connec-
tion, if applicable. If the auxiliary drain
connection is left open, air can be drawn
in through the opening. This drawn in air
can cause moisture carryover.
All drain lines downstream of the trap
must flow continuously downhill. If
segments of the line are routed uphill, this
can cause the drain line to become
pressurized. With a pressurized drain
line, the trap can back up into the drain
pan, causing it to overflow.
See Figure I-MR-1 for drain trap recom-
mendations.
CAUTION
Water Damage!
Failure to make adequate condensate
piping may result in water damage to
the equipment or building.
6 8 10 12
0.75 1.00 1.00 1.00
1.905 2.54 2.54 2.54
0.75 N/A N/A N/A
1.905 N/A N/A N/A
mechanical
requirements
Coil Connections
Hydronic Coils
Hydronic coil options are either one, two,
four, six or eight-row coils with high
efficiency Delta-Flo
are mechanically bonded to ½ inch O.D.
seamless copper tubes. All coils are
specifically designed and circuited for
chilled and hot water use only. All coils
are pressure tested at 450 psi. Threaded
connections are standard.
Proper installation and piping is neces-
sary to enure satisfactory coil operation
and prevent operational damage. Water
inlet and outlet connections protrude
through the coil access panel. Follow
standard piping practices when piping to
the coil.
Steam Coils
Packaged Climate Changer units fitted
with steam coils have labeled holes for
piping penetrations. Check that the coil is
installed correctly and that the unit
installation agrees with the submittals.
Refer to Figure I-MR-2 for typical steam
coil piping.
H = 1" Of Length for Each 1" Of Negative Pressure
J =
L = H + J + Pipe Dia. + Insulation
Figure I-MR-1. Recommended drain trap
installation for draw-thru units.
14 17 21 25
1.00 1.00 1.00 1.25
2.54 2.54 2.54 3.175
N/A N/A N/A N/A
N/A N/A N/A N/A
™ fins. Aluminum fins
+ 1" Additional
1 / of H
2
30
1.25
3.175
N/A
N/A
31