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WARNING
DO NOT USE THIS COIL ON OIL FURNACES OR ANY APPLICATIONS WHERE THE TEMPERATURE ON DRAIN
PAN MAY EXCEED 300°F. A FIELD FABRICATED METAL DRAIN PAN SHOULD BE USED FOR THESE TYPES OF
APPLICATIONS. FAILURE TO FOLLOW THIS WARNING MAY RESULT IN PROPERTY DAMAGE AND/OR PERSONAL
INJURY.
This indoor coil contains the flowrator distributor assembly, which consists of a nut, distributor body, copper tubes feeding
the coil, and the internal flow check piston. It is essential that the indoor and outdoor sections be properly matched. When
matching the indoor coil with other than the matching outdoor section, the flow check piston in the indoor section MUST be
changed to match with the outdoor section to obtain the rated performance as specified in our sales specification sheets. If
a piston size is too small, it causes starving; if it is too large, it causes flooding. When using a combination that requires
a different piston size, change the piston in the distributor on the indoor coil before installing the coil, and follow the procedure
shown below.
1. Loosen the 13/16 nut 1 turn only to allow the high pressure tracer gas to escape. No gas indicates a possible leak.
2. After the gas has escaped, remove the nut and discard the cap.
3. Use a tube cutter to remove the spin closure on the suction connection.
4. Remove the tail piece clamped to the exterior and slide the 13/16 nut in place.
5. Braze the tail piece to the line set liquid tube.
6. Insert the suction line into the connection , slide the insulation and the rubber grommet at least 18" away from the braze
joint.
7. After the tail piece has cooled, insert the seal and hand tighten the 13/16 nut.
8. Torque the 13/16 nut 10-30 ft/ lbs. or tighten 1/6 turn.
9. Replace suction line grommet and insulation.
CAUTION
EXCESSIVE TORQUE CAN CAUSE ORIFICES TO STICK. USE THE PROPER TORQUE SETTINGS WHEN
TIGHTENING ORIFICES.
Check fittings for leaks after complete installation. Evacuate and charge on the low side.
NOTE: With piston in distributor, the seal end should be pointing inside the distributor body and should not be seen when
looking into the end of distributor. Make sure the piston is free to rotate, and move up and down in the distributor body.
IMPORTANT
NOTE (#2) IN THE PISTON KIT CHART (PKC-XX) WILL NOT APPLY TO CH COILS. PISTON KIT NOT INCLUDED
WITH CH COILS. IT MUST BE PURCHASED FROM DISTRIBUTOR.
SPECIAL INSTRUCTIONS
3
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