Maximum Airflow Setting, Cfm; Installing / Brazing Refrigerant Lines - Trane 4PXCAU24BS3HAB Installer's Manual

a. Lay the coil on its back side.
b. Locate the 4" wide gasket material found in
BAYGSKT001A0.
c. Attach the 4" gasket material to three sides of the bottom
of the drain pan as shown. Make sure to start by matching
up the edge of the gasket material to the inner edge of the
drain pan by the coil fins and working outwards.
d. The gasket material can be cut or ripped easily so that it
can be tailored to fit. The gasket material must cover
the three sides along the entire length of the coil as shown
in Figure 4.
Attach Downflow
Bottom Gasket
Figure 4
Note: when installing coil onto an S-Series furnaces
in horizontal right or downflow configuration, bend
the flanges downward for a flush fit.
Figure 5
18-AD41D1-1B-EN
F. MAXIMUM AIRFLOW SETTING, CFM
NOTE:
Water blow-off could occur in certain installation posi-
tions if the airflow setting exceeds the maximum values
listed.
4PXC*U24BS3HAB
4PXC*U30BS3HAB
4PXC*D30BS3HDB
4PXC*U32BS3HAB
Start
4PXC*U36BS3HAB
here
4PXC*D36BS3HDB
4PXC*U42BS3HAB
4PXC*D42BS3HDB
4PXC*U48BS3HAB
4PXC*U60BS3HAB
4PXC*D60BS3HDB
* May be "A", "B", "C", or "D"
NOTE:
The TXV setting on this unit may run high superheat
(15-25°F) by design when measured at the outdoor unit.
G. INSTALLING / BRAZING REFRIGERANT LINES
Do NOT open refrigerant valve at the outdoor unit until the
refrigerant lines and coil have been brazed, evacuated, and
leak checked. This would cause contamination of the refrig-
erant or possible discharge of refrigerant to the atmosphere.
1.
NOTE: Refrigerant lines must be isolated from the structure and
the holes must be sealed weather tight after installation.
IMPORTANT:
Do not unseal refrigerant tubing until ready to fit refrigerant
lines.
There is only a holding charge of dry air in the indoor coil, therefore
no loss of operating refrigerant charge occurs when the sealing
plugs are removed.
Installer's Guide

Maximum airflow setting, CFM

Coil
Upflow Downflow
900
1125
n/a
1350
n/a
1575
n/a
1800
2250
n/a
CAUTION
!
The following steps are to be considered when installing
the refrigerant lines:
a. Determine the most practical way to run the lines.
b. Consider types of bends to be made and space
limitations.
c. Route the tubing making all required bends and
properly secure the tubing before making final
connections.
Horizontal Horizontal
Left Right
750 800 900
1000
925 1125
n/a
1200 1350
1200 1350
1100
n/a
1400
1300 1575
n/a
1475 1600 1800
2000
1850 2250
n/a
3