Install Instructions

3
CAUTION
IF SECONDARY DRAIN IS NOT INSTALLED, THE
SECONDARY ACCESS MUST BE PLUGGED.
REFRIGERANT LINES
WARNING
TO PROTECT THE UNIT WHEN WELDING CLOSE TO THE
PAINTED SURFACES, THE USE OF A QUENCHING CLOTH
IS STRONGLY ADVISED TO PREVENT SCORCHING OR
MARRING OF THE EQUIPMENT FINISH. SOLDER WITH A
MINIMUM OF 5% SILVER IS RECOMMENDED.
Tubing Preparation
All cut ends are to be round, burr free, and cleaned. Failure to
follow this practice increases the chances for refrigerant leaks.
The suction line is spun closed and requires a pipe cutter to
remove the closed end.
Post Brazing
Quench all welded joints with water or a wet rag.
Piping Size
For the correct tubing size, follow the specification for the
condenser/heat pump.
WARNING
THIS COIL IS SHIPPED UNDER PRESSURE. FOLLOW
THESE INSTRUCTIONS TO PREVENT INJURY (SEE
FIGURES 1 AND 2).
1. Loosen the 13/16 nut 1 TURN ONLY. No pressure loss
indicates possible leak.
2. Remove the nut and discard the black or brass cap.
3. Remove the check piston to verify it is correct and then
replace the piston. See piston kit chart in instructions.
4. Use a tube cutter to remove the spin closure on the suction
line.
5. Remove the tailpiece clamped to the exterior.
6. Slide the 13/16 nut into position on the tailpiece. Braze
tailpiece to the liquid tube.
7. Insert the suction line into the connection, slide the
insulation and the rubber grommet at least 18" away from
the braze joint. Braze suction line.
8. AFTER THE TAILPIECE HAS COOLED, confirm position of
the white Teflon seal and hand tighten the nut.
9. Torque the 13/16 nut to 20-30 ft-lbs. [2.77-4.15 meter kg].
10. Replace suction line grommet and insulation.
TAILPIECE
13/16" NUT
PLASTIC or BRASS CAP
WHITE
TEFLON SEAL
PISTON
Figure 1
RUBBER
GROMMET
SUCTION LINE
WITH SPIN CLOSURE
Figure 2
EVAPORATOR COIL METERING DEVICE
The CAUF, CACF and CAPF models are equipped with a check
style flowrater for refrigerant management. For most
installations no change to the flowrater orifice is required. In
mix-matched applications (condenser/heat pump is a different
tonnage than the coil) a different flowrater orifice may be
required. See the Goodman piston kit chart PKC-00*. Consult
your local distributor for the details regarding mix-matched orifice
sizing.
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.
Should the plenum and furnace openings be the same size,
the filler plates should be removed.
PLASTIC DRAIN PAN APPLICATION
DO NOT USE THE COIL PAN THAT SHIPPED WITH THE
UNIT ON AN OIL FURNACE OR ANY APPLICATION WHERE
THE TEMPERATURE OF THE DRAIN PAN MAY EXCEED
300°F. A HIGH TEMPERATURE DRAIN PAN (KIT NUMBERS
HTP-A, -B, -C AND –D FOR NOMINAL WIDTHS OF 14, 17.5,
21 AND 24.5-INCHES RESPECTIVELY) SHOULD BE USED
FOR THIS TYPE OF APPLICATION. A FIELD FABRICATED
METAL DRAIN PAN CAN ALSO BE USED.
CAUTION