7
FILTER
IR
RECEIVER
POWER/AIRCOND
TIMER
FILTER
IR
RECEIVER
POWER/AIRCOND.
TIMER
INDOOR UNIT 09,12,18
PRESSURE
COMPRESSOR
IMPEDANCE
AUTO
OFF
REMOTE
FUSE
FILTER
IR
RECEIVER
POWER/AIRCOND
TIMER
POWER/AIRCOND. TIMER
IR RECEIVER
FILTER
1
2
3
4
5
6
7
8
9
HI speed
Comp
RV
S
Med speed
Low speed
Neutral
Contact
S(3ph)
T(3ph)
p.
Plastic Cover
L2
L1
115 VAC
1
2
3
4
5
30 VDC
FAN
RVS
COMP
(+30V)
DC RTN
6
TH1
TH2
TH3
*
1
2
3
4
5
6
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)
3
/
8
-in. (29 ft-lb)
5
/
8
-in. (47 ft-lb)
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
refrigerant charge must be checked and adjusted. Follow the
steps below.
1. Open the service port cap on the suction line valve (large
valve).
2. Connect the vacuum pump to the service port 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.
5.
Open the mixed-phase valve (small valve) with an Allen
wrench.
6. O
pen the suction line valve (large valve) with an Allen
wrench.
7.
The outdoor unit is supplied with sufficient R-22 refriger-
ant
up to
25
ft
piping length
. Add 0.9 oz of refrigerant for
each additional 3 ft of tubing used.
8. Make sure that the valves are properly opened. Be careful
not to open them more than required as this may damage
the thread.
9. Replace the service port cap. Using refrigerant oil, lubri-
cate 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. 13-16 for system wiring diagrams.
Leak Test
Leak test all fittings with appropriate test
equipment.
Model DFC2A/H 09
Fig. 12A --- Legs Mounting Base and Wiring
Outdoor Units
4. Remove the service port caps from the mixed-phase
valve and suction line valve
Fig. 12B --- Indoor unit Leds and Wiring
