9
PRODUCT DAMAGE HAZARD
Failure to follow this caution may result in product or property
damage.
Wrap a wet cloth around rear of fitting to prevent damage to
TXV and factory--made joints
.
CAUTION
!
4. Evacuate coil and tubing system to 500 microns using deep
vacuum method.
Procedure 6 — CONDENSATE DRAIN
To connect drains the cap openings must be removed. Use a knife
to start the opening near the tab and using pliers, pull the tab to
remove the disk. Clean the edge of the opening if necessary and
install the condensate line. Finally caulk around the lines where
they exit the fitting to retain the low leak rating of the unit.
UNIT OR PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in product or
property damage.
The conversion of the fan coil to downflow requires special
procedures for the condensate drains on both A--coil and
slope units. The vertical drains have an overflow hole
between the primary and secondary drain holes. This hole is
plugged for all applications except downflow, but must be
used for downflow. During the conversion process, remove
the plastic cap covering the vertical drains only and discard.
Remove the plug from the overflow hole and discard. At
completion of the downflow installation, caulk around the
vertical pan fitting to door joint to retain the low air leak
performance of the unit.
CAUTION
!
Units are equipped with primary and secondary 3/4--in. (19mm)
FPT drain connections. For proper condensate line installation see
Fig. 2, 4, 5, 6, and 8.
To prevent property damage and achieve optimum drainage
performance, BOTH primary and secondary drain lines should be
installed and include properly--sized condensate traps. (See Fig. 14
and 16.) Factory--approved condensate traps are available. Be sure
to install plastic push--in plugs in unused condensate drain fittings.
It is recommended that PVC fittings be used on the plastic
condensate pan. Do not over--tighten. Finger--tighten plus 1--1/2
turns. Use pipe dope.
2” MIN
(51 mm)
UNIT
2” MIN
(51 mm)
A03002
Fig. 14 -- Recommended Condensate Trap
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in product or property
damage.
Shallow running traps are inadequate and DO NOT allow proper
condensate drainage. (See Fig. 15.)
CAUTION
!
DO NOT USE SHALLOW RUNNING TRAPS!
A03013
Fig. 15 -- Insufficient Condensate Trap
NOTE
: When connecting condensate drain lines avoid blocking
filter access panel. Prime both primary and secondary condensate
traps after connecting to drain pan.
NOTE
: If unit is located in or above a living space where damage
may result from condensate overflow, a field--supplied external
condensate pan should be installed underneath the entire unit, and a
secondary condensate line (with appropriate trap) should be run
from the unit into the pan.
Any condensate in this external condensate pan should be drained
to a noticeable place. As an alternative to using an external
condensate pan, some localities may allow the use of a separate
3/4--in. (19mm) condensate line (with appropriate trap) to a place
where the condensate will be noticeable. The owner of the structure
must be informed that when condensate flows from the secondary
drain or external condensate pan, the unit requires servicing, or
water damage will occur.
Install traps in the condensate lines as close to the coil as possible.
(See Fig. 16.) Make sure that the outlet of each trap is below its
connection to the condensate pan to prevent condensate from
overflowing the drain pan. Prime all traps, test for leaks, and
insulate traps if located above a living area.
FV4
C