ICP DAS USA DFS2H318J2A A - Indoor unit LED’s and Wiring, Indoor Unit, Both refrigerant lines

PLASTIC CONTROL

COVER

INDOOR UNIT 2 X 09, 2 X 12	Operation push button for
	automatic operation (23° C),
	turning the a/c OFF, canceling
	the malfunction indication,
	and resetting the filter LED.

OFF ON TIMER

SERVICE LED

IR RECEIVER FILTER

Fig. 12A — Indoor unit LED’s and Wiring

FLARING AND CONNECTING REFRIGERANT LINES

1.Remove the protective cap from the flare fitting.

2.Remove the protective cap from the tubing and cut to the required length. Be sure that the cut is perpendicular and clean, without burrs.

3.Slip the flare nut on the tubing and flare the tube end using standard flaring tools.

4.Tighten the nut until resistance is met. Mark the nut and the fitting. Using a suitable wrench tighten an additional 1/4 turn. Use the following specified torque, according to connection size:

Mixed-Phase line: Suction line:

1/4 in.-(12.3 ft-lb.) 1/2 in.-(36 ft-lb.)

Both refrigerant lines

need to be insulated separatly

NOTE: The service valves on the outdoor unit must remain closed until all 4 connections have been made.

EVACUATE TUBING AND CHARGE THE SYSTEM — When all the fittings are connected, air must be expelled, then refriger- ant charge must be checked and adjusted. Follow the steps below.

1.Open the service port cap on the suction line valve (large valve of unit No. 1).

2.Connect the vacuum pump to the service port of unit No. 1 via the pressure gage and evacuate to 500 microns to eliminate contamination and moisture.

3.Disconnect the vacuum pump. Unit should maintain 500 microns for 5 minutes.

4.Remove the service port caps from the mixed-phase valve and suction line valve

5.Open the mixed-phase valve (small valve) with an Allen wrench.

6.Open the suction line valve (large valve) with an Allen wrench.

7.To evacuate and charge unit No. 2 repeat steps 1 thru 6.

8.The outdoor unit is supplied with sufficient R-22 refrigerant for up to 25 ft. lineset length. Add 0.9 oz. of refrigerant for each additional 3 ft. of tubing length.

9.Make sure that the valves are properly opened. Be careful not to open them more than required as this may damage the thread.

10.Replace the service port cap. Using refrigerant oil, lubricate the cap beam and hand tighten until resistance is met. Use a suitable wrench to tighten the cap by an additional 1/2 turn.

Power Supply — See Tables 4 and 5 for electrical data and Fig. 13-14 for system wiring diagrams.

Leak Test — Leak test all fittings with appropriate test equipment.

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