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SOH 076 K 38 E1
General information
General description
The SOH-K series units are the outdoor units of a split type
heat pump, equipped with a vertical discharge axial fan and
ready to be installed directly outdoors.
The SOH-076 to 300K units are compatible with indoor units
SICH-070B to 180B and 240C, SIH-300B.
For adequate operation, both the electrical as well as the cool-
ing sections of these units need to be connected to the corre-
sponding indoor unit.
The SICH indoor units can be equipped, as an optional ac-
cessory, with an electric heater or a hot water coil for auxil-
iary heat in the case of an emergency.
Nomenclature
Coils
Of a large surface, made of grooved copper tubing and
notched aluminium fins.
Fans (outdoor units)
Axial with free air discharge, without ducts. The unit is
equipped with a speed selector in summer cycle that is regu-
lated by the high pressure of the cooling circuit.
Fan (indoor units)
Centrifugal, with dual helix and a shaft in common, except in
models SICH-070B and 076B, that have a single helix. Belt
and pulley drive with a removable core. The motors are
mounted on tensor bases.
Casing (outdoor units)
Made of galvanised steel sheeting, finished with oven-poly-
merised powdered paint, which allows installing outdoors.
Casing (indoor units)
Made of galvanised steel sheeting and finished with oven-
polymerised powdered paint. Insulated internally so as to
avoid condensation and reduce noise level.
Equipped with a tray and corresponding drain for collecting
condensation from the coil. The structure of the SICH-070B
to 150B indoor units allows either vertical or horizontal orien-
tation of the fans.
Cooling circuit
Made of welded copper tubing. The units are supplied dehy-
drated and factory tested with regard to maximum pressure and
airtightness. In the indoor units, refrigerant expansion is carried
out by means of calibrated and distributor holes. In the outdoor
units, thermostatic expansion and distributor valves are used.
The outdoor units also include a suction accumulator, discharge
muffler, high and low pressure switches and suction and dis-
charge pressure intakes. 3/8" high and low service valves are
also available to aid charge and discharge operations.
Refrigerant
These units are supplied with connections ready for welding.
The refrigerant charge must be carried out fully at job site.
3/8" high and low service valves are available for this pur-
pose, 2 per circuit, that aid charge and discharge operations.
The refrigerant used is R-407C.
Electrical panel
Accessible directly from the exterior. Includes connecting
strip, control board and electronic probes, power supply con-
tactors, operating relays, phases control relay, transformer,
heat relays and automatic switches. In compliance with Eu-
ropean standards in force.
Phase control relay
The electric panel of the unit introduces a sequence and phase
failure detector. In the case of detecting a phase sequence
other than R-S-T, or a phase fails once the unit is in opera-
tion, this detector, by means of an internal volt-free contact,
disconnects power supply to the main board of the unit, leav-
ing it inoperative.
Shoud the phase sequence be correct and the centrifugal
fan of the indoor unit (SICH) rotates in the wrong direction,
interchange two phases at the bottom of the fan contactor.
K
= Version
Edition
SOH = Outdoor unit with axial fan
SICH
Nominal capacity:
Cooling
Heating
076
= 22 000 W / 23 000 W
090
= 29 000 W / 30 000 W
120
= 33 400 W / 34 000 W
150
= 38 500 W / 43 000 W
180
= 54 000 W / 55 500 W
240
= 68 000 W / 67 800 W
300
= 83 000 W / 89 000 W
Voltage:
38
= 400.3.50
= Horizontal indoor unit.
Technical specifications
Mechanical specifications
Compressor
Vertical hermetic type. Mounted on antivibratory supports and
has internal motor protection. Includes an electric heater for
heating the oil in the sump to make start-up easier and avoid
loss of oil in compressor.