Install Instructions

7
7 Refrigerant Lines
NOTE: Refrigerant tubing must be rout ed to allow adequat e ac-
cess for servicing and maint enance of the unit.
Do not install the air handler in a locat ion that violates t he
inst ructions provided with the condenser. If the unit is located in
an uncondit ioned area wit h high ambient temperat ure and/ or
high humidity, the air handler may be subject to nuisance
sweating of the casing. On these inst allations, a w rap of 2"
fiberglass insulation with a vapor barrier is recommended.
7.1 Tubing Size
For the correct tubing size, follow the specification for the
condenser/ heat pump.
7.2 Tubing Preparation
All cut ends are to be round, burr free, and clean. Failure to
follow this practice increases the chances for refrigerant leaks.
The suction line is spun closed and requires tubing cutters to
remove the closed end.
NOTE: To prevent possible damage t o the tubing joint s, do
not handle coil assembly wit h manifold or flow rator tubes.
Alw ays use clean gloves when handling coil assemblies.
ACCESS PANEL CONFIGURATION
FOR DOWNFLOW
OR HORIZONTAL RIGHT
Figure 9
This product is factory-shipped with R410A and dry
nitrogen mixture gas under pressure. Use appropriate
service tools and follow these instructions to prevent
injury.
A quenching cloth is strongly recommended to prevent
scorching or marring of the equipment finish when
brazing close to the painted surfaces. Use brazing
alloy of 5% minimum silver content.
Applying too much heat to any tube can melt the tube. Torch
heat required to braze tubes of various sizes must be
proportional to the size of the tube. Service personnel must
use the appropriate heat level for the size of the tube being
brazed.
CAUTION