18-AD41D1-1B-EN
3
Installer’s Guide
Maximum airflow setting, CFM
Coil
Upflow Downflow
Horizontal
Left
Horizontal
Right
4PXC*U24BS3HAB
900
750
800
900
4PXC*U30BS3HAB 1125
925
1000
1125
4PXC*D30BS3HDB
n/a
n/a
4PXC*U32BS3HAB
1350
1200
1350
1350
4PXC*U36BS3HAB
1100
1200
4PXC*D36BS3HDB
n/a
n/a
4PXC*U42BS3HAB 1575
1300
1400
1575
4PXC*D42BS3HDB
n/a
n/a
4PXC*U48BS3HAB 1800
1475
1600
1800
4PXC*U60BS3HAB 2250
1850
2000
2250
4PXC*D60BS3HDB
n/a
n/a
* May be "A", "B", "C", or "D"
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.
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.
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. 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.
NOTE:
Refrigerant lines must be isolated from the structure and
the holes must be sealed weather tight after installation.
NOTE:
The TXV setting on this unit may run high superheat
(15-25°F) by design when measured at the outdoor unit.
Figure 4
Attach Downflow
Bottom Gasket
Start
here
Figure 5
Note: when installing coil onto an S-Series furnaces
in horizontal right or downflow configuration, bend
the flanges downward for a flush fit.
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.
CAUTION
!
