Haier HC24D1VAR [13/16] Circulating air duct

SUCTION LINE

WITH SPIN

CLOSURE

RUBBER

GROMMET

ORIFICE CHANGE

The restrictor (orifice) included in this unit match the comparable capacity of the outdoor

unit. If the indoor unit is greater in capacity than the outdoor condenser, the orifice must

be changed to match the outdoor unit capacity. The restrictor (orifice) should be replaced

before any tubing connections are made.

THE CAPACITY OF THE OUTDOOR UNIT SHOULD NEVER EXCEED THE

CAPACITY OF THE INDOOR UNIT.

To replace the restrictor (orifice), follow the steps below:

WARNING

THIS COIL IS SHIPPED UNDER PRESSURE.

FOLLOW THESE INSTRUCTIONS TO PREVENT INJURY:

1) Remove the 1/4 nut on the liquid line and press the chip of the check valve. No pressure loss indicates p

2) Remove the 13/16 nut .

3) Remove the check piston to verify it is correct. See piston kit table 1 in manual.

4) Use a torch to remove the spin closure on the suction line .

5) Use a torch to remove the check valve on the liquid line .

6) Slide the 13/16 nut into position. 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.

8) AFTER THE TAILPIECE HAS COOLED, position the white Teflon seal and hand

tighten the nut.

9) Torque the 13/16 nut to 10-30 ft/lbs. or tighten 1/6 turn.

10) Replace suction line grommet and insulation.

CIRCULATING AIR DUCT

Air duct systems should be designed and installed as per local and/or national code.Refer

to NFPA 90A & 90B and the National Environmental Systems Contractors Association -

Manual "K".

The use of flexible duct connectors is recommended to minimize the possibility of noise

transmission. These connectors must conform to U.L. standards.

Supply air ducts must be insulated and return ducts must be insulated when passing

through an unconditioned space. When passing through an unconditoned space it may be

necessary to install a vapor barrier to the exterior of the ducts to prevent condensation.

Seams of all supply ducts must be sealed to prevent leakage and return ducts sealed

airtight to prevent infiltration.

The supply plenum should be the dimensions specified by the factory.

13/16" NUT

TALL PIECE

PISTON

WHITE TEFLOW SEAL