9
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 pipe cutters 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.
Special Instructions
This coil comes equipped with a check style flowrator for
refrigerant management. For most installations with matching
applications, no change to the flowrator piston is required.
However, in mix-matched applications, a flowrator piston change
may be required. See the piston kit chart or consult your local
distributor for details regarding mix-matched piston sizing. If the
mix-match application requires a different piston size, change the
piston in the flowrator on the indoor coil before installing the coil
and follow the procedure shown below.
IMPORTANT: Torch heat required to braze tubes of various sizes
is proportional to the size of the tube. Tubes of smaller size
require less heat to bring the tube to brazing temperature before
adding brazing alloy. Applying too much heat to any tube can
melt the tube. Service personnel must use the appropriate heat
level for the size of the tube being brazed.
NOTE: The use of a heat shield when brazing is recommended to
avoid burning the serial plate or the finish on the unit. Heat trap or
wet rags should be used to protect heat sensitive components
such as service valves and TXV valves.
1. Loosen the
¹³⁄₁₆
" nut one turn only to allow high pressure
tracer gas to escape. No gas indicates a possible leak.
2. After the gas has escaped, 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 the piston kit chart in the instructions.
4. Use a tube cutter to remove the spin closure on the suction
line.
5. Remove the tailpiece clamped to the exterior and slide the
¹³⁄₁₆
" nut into place.
6. Braze the tailpiece to the line set liquid tube.
7. Insert the suction line into the connection.
8. Slide the insulation and the rubber grommet at least 18"
(45.7 cm) away from the braze joint.
9. Braze suction line.
10. After the tailpiece has cooled, confirm position of the white
Teflon
®
seal and hand-tighten the
¹³⁄₁₆
" nut.
11. Torque the
¹³⁄₁₆
" nut to 10 to 30 ft-lbs. or tighten one-sixth
turn.
12. Replace the suction line, grommet and insulation.
Make Electrical Connections
240-Volt Installations
A. Tailpiece
B.
¹³⁄₁₆
" nut
C. Plastic or brass cap
D. White Teflon
®
seal
E. Piston
F. Rubber grommet
G. Suction line with
spin closure
®Teflon is a registered trademark of E.I. Dupont de Nemours and
Company.
Goodman 8
Excessive torque can cause orifices to stick. Use the
proper torque settings when tightening orifices.
CAUTION
G
F
A
B
C
E
D
Goodman 6
HIGH VOLTAGE!
WARNING
Disconnect ALL power before servicing.
Multiple power sources may be present.
Failure to do so may cause property damage,
personal injury or death.
Goodman 22
To avoid the risk of fire or equipment damage, use
copper conductors.
WARNING
