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7. The bottom left drain connection is the primary drain for
this application and condensate drain line must be attached
to this drain connection. The top connection of the three
drain connections on the drain pan must remain plugged
for this application. The bottom left drain connection is for
the secondary drain line (if used).
UPFLOW
UPFLOW
Figure 2
NOTE: If removing only the coil access panel from the unit, the filter
access panel must be removed first. Failure to do so may result in
panel damage.
Do not install the air handler in a location that violates the
instructions provided with the condenser. If the unit is located in
an unconditioned area with high ambient temperature and/or high
humidity, the air handler may be subject to nuisance sweating of
the casing. On these installations, a wrap of 2" fiberglass insulation
with a vapor barrier is recommended.
HORIZONTAL LEFT
DOWFLOW
DOWFLOW
Figure 3
Figure 4
7
Refrigerant Lines
NOTE: Refrigerant tubing must be routed to allow adequate access
for servicing and maintenance of the unit.
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 to the tubing joints, do not
handle coil assembly with manifold or flowrator tubes. Always
use clean gloves when handling coil assemblies.
NOTE: The use of a heat shield is strongly recommended when
brazing to avoid burning the serial plate or the finish of the unit.
Heat trap or wet rags must be used to protect heat sensitive
components such as service valves and TXV valves sensing bulb.
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.
CAUTION
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.
5
HORIZONTAL RIGHT
Figure 5
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