Electrical Connections - Johnson Controls SOC076K/AHO-204FG Hinweise Zum Einbau

7.5 m., the refrigerant load should be
increased or decreased by the grams indi-
cated in the following table, in accordance
with the increase or decrease in the length
of the liquid tubing.
Make sure the refrigerant load is correct by
measuring overheating. In normal summer
conditions, 5°K is correct.
Detecting leaks
Once charge is complete, detect leaks by
means of a detector.
Comparison of application of
R-407-C refrigerant
Due to the characteristics of the refriger-
ants, their evaporating, condensing and
discharge temperatures are high operating
pressures in the equipment, and the specific
requirements needed for efficient operation
(free of humidity and dirt), only a team of
specially trained and certified technicians
can handle them.
R-407-C
(Mixture of 3 refrigerants: HFC-32 + HFC-125 + HFC-134a)
Standard compressor
P.O.E. oil
Charge in liquid phase (by weight)
T° Evaporation with displacement (7°C)
High vacuum 50 microns in 2 stages
Detection of difficult leaks (requires
detector adapted to R-407-C)
Wiring

Electrical connections

The established national regulations should
be followed in all cases.
Each unit is supplied with an electric panel for
connecting the power supply my means of a
fused main switch or an automatic switch.
This electric panel includes a phase detec-
Power supply connecting diagrams
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tor to make sure the electrical sequence is
R-S-T. Should this not be the case, the
electronic control board will not be powered
and the unit will be inoperative. In this case,
interchange two of the main power supply
input phases of the machine.
Connection of indoor fan on
(SICH/BCVI)
Should the phase sequence (R-S-T) be
correct but the fan rotates in the opposite
direction, interchange two phases at the
bottom of the fan contactor.
Configuration of electronic
board
For start-up after the accessories are in-
stalled, connect power supply to the unit.
To have the electronic board respond in
accordance with the accessories installed,
press the "test" button a few seconds, until
the red LED goes out.
The "test" button should be pressed only
when the board is under electric current.
Refrigerant load
Model
SOC076K/AHO-204FG
SOH076K/AHO-204BG
SICH070/076B/BCVI-204/254
SOC090K/AHO-304FG
SOH090K/AHO-304BG
SICH090/120B/BCVI-304/404
SOC120K/AHO-404FG
SOH120K/AHO-404BG
SICH090/120B/BCVI-304/404
SOC150K/AHO-454FG
SOH150K/AHO-454BG
SICH150B/BCVI-454
SOC180K/AHO-604FG
SOH180K/AHO-604BG
SICH180B/BCVI-604
SOC240K/AHO-804FG
SOH240K/AHO-804BG
SICH240B/BCVI-804
SOC300L/AHO-1004FG
SOH300L/AHO-1004BG
SICH300B/BCVI-1004
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If pressed and held without any current at
the board, and then the power supply is
connected, the microprocessor will lose its
configuration and the board assembly will
have to be replaced.
Thermostat connection
For connecting thermostat to control board,
10 x 0.22 mm2 screened communication
cable should be used.
Scroll compressors, rotational
direction
The Scroll compressors, just like the fans,
operate correctly in only one rotational
direction. Upon starting the unit up, this
rotational direction should be checked. If it
is not correct:
- The compressor does not compress.
- It makes abnormal noise.
- The consumption of amps is low.
- It overheats.
All motors are factory-wired for rotation in
the correct direction.
Nominal load
R-407C kg
SOC/AHO-FG SOH/AHO-BG
6.6 8.9
7.8 11.4
11.2 12.4
6.7 9
8.7 10
10 13
16 15
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GB
Liquid Additional
Number
line load grams
of circuits
diameter (per meter)
1/2"
1
104
(12.7 mm)
5/8"
1
170
(15.87 mm)
5/8"
1
170
(15.87 mm)
1/2"
2 104
(12.7 mm)
5/8"
2
170
(15.87 mm)
7/8"
2
347
(22.2 mm)
7/8"
2
347
(22 mm)
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Maximum
length of
standard
tubing m.
20
20
20
20
20
20
20
13