Make Electrical Connections - Whirlpool WAHMS Installation Instructions And Owner's Manual

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Installation instructions manual (16 pages)

Table of Contents

Enlarged version

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

seal and hand-tighten the ¹³⁄₁₆" nut.

Teflon

CAUTION

Goodman 8

Excessive torque can cause orifices to stick. Use the

proper torque settings when tightening orifices.

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.

A. Tailpiece

D. White Teflon

B. ¹³⁄₁₆ " nut

E. Piston

C. Plastic or brass cap