CHPF Installation Manual

ManualsBrandsGoodman ManualsEvaporator Coils1.5 to 2 Ton Horizontal Cased Evaporator Coil

Special Instructions

This coil comes equipped with a check style flowrator for refrig-

erant management. For most installations with matching ap-

plications, no change to the flowrator orifice is required. How-

ever, in mix-matched applications, a flowrator change may be

required. See the Piston Kit Chart or consult your local dis-

tributor for details regarding mix-matched orifice sizing. If the

mix-match application 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 high pres-

sure tracer gas to escape. No gas indicates a possible

leak.

2. After the gas has escaped, remove the nut and discard

the plastic 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 suc-

tion line.

5. Slide the 13/16 nut into place on the tailpiece supplied in

the literature bag or with the unit.

6. Braze tailpiece to the line set liquid tube.

Figure 7

Flowrator

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 suction line.

8. AFTER THE TAILPIECE HAS COOLED, confirm posi-

tion of the white Teflon

seal and hand tighten the 13/16

nut.

9. Torque the 13/16 nut to 10-25 ft-lbs. or tighten 1/6 turn.

Excessive torque can cause orifices to stick. Use the proper

torque settings when tightening orifices.

CAUTION

10. Replace suction line grommet and insulation.

RUBBER

GROMMET

SUCTION LINE

WITH SPIN CLOSURE

Figure 8

Suction Line Grommet

11. Check fittings for leaks after complete installation. Evacu-

ate and charge on the low side.

NOTE: With the piston in the distributor, the seal end should

point 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 does not apply to

CH coils.

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NOTE: SPECIFICATIONS AND PERFORMANCE DATA LISTED HEREIN ARE SUBJECT TO CHANGE WITHOUT NOTICE.