CAUF Installation Manual

3
Figure 1
7. Insert the suction line into the connection, slide the insu-
lation and the rubber grommet at least 18" away from the
braze joint. Braze both liquid and suction line joints.
8. AFTER THE TAILPIECE HAS COOLED, confirm posi-
tion of the white Teflon
®
seal and hand tighten the 13/16
nut.
Excessive torque can cause orifices to stick. Use the
proper torque settings when tightening orifices.
CAUTION
9. Torque the 13/16” nut to 10-20 ft-lbs. or 1/6 turn past
hand tight.
10. Replace suction line grommet and insulation.
8.6 Tubing Connections for TXV Version
TXV models come with factory installed non-adjustable
TXV with the bulb permanently located on the suction tube.
1. Remove coil access panel.
2. Remove access valve fitting cap and depress the valve
stem in access fitting to release pressure. No pressure
indicates possible leak.
3. Replace the refrigerant tubing panel.
4. Remove the spin closure on both the liquid and suction
tubes using a tubing cutter. DO NOT USE A CUTTING
METHOD THAT WOULD RESULT IN THE GENERATION
OF COPPER SHAVINGS OR COPPER DUST.
SUCTION
LINE SET
SUCTION
TUBE
RUBBER
GROMMET
Figure 2.1
LIQUID
LINE SET
LIQUID
LINE
RUBBER
GROMMET
Figure 2.2
5. Insert liquid line set into liquid tube expansion and slide
grommet about 18" away from braze joint.
6. Insert suction line set into suction tube expansion and
slide insulation and grommet about 18" away from braze
joint.
7. Braze suction and liquid line joints.
9. Filler Plates
Filler plates are supplied on all 17.5, 21, & 24.5 inch chassis
to be used for adapting the unit to a furnace one size smaller.
If the plenum and furnace openings are the same size, the filler
plates must be removed. See Figure 3.
FILLER
PLATE
Figure 3
10. Plastic Drain Pan Application
Do not use the coil pan shipped with the unit on OIL
furnaces or any application where the temperature of
the drain pan may exceed 300°F. A high temperature
drain pan such as kits HTP-A, -B, -C and -D for normal
cabinet widths of 14, 17.5, 21 and 24.5 inches,
respectively, should be used for applications where
the temperature exceeds 300°F and below 450°F. A
field fabricated metal drain pan can also be used for
applications where temperature exceeds 300°F.
Failure to follow this warning may result in property
damage and/or personal injury.