GB - 14
Installation instructions supplement
38GLS…G units are designed to work in North European
climates.
These versions are identified on the 5th digit, "S" of their
code number.
R-410A versions are identified on the 8th digit “G” of their
code number.
They differ from the standard ones for the following factory
fitted accessories: head pressure controller pressure sensor
(HPC) and loss of refrigerant pressure switch (LRPS).
Operating range
Ambient temperature:
min. –5°C max. +43°C (mod. 007, 009)
min. –15°C max. +43°C (mod. 012, 018, 024)
Power supply
Nominal single-phase voltage: 230V ~ 50Hz
Operating voltage limits min. 198V
max. 264V
Features
– HPC and HIP Remote Manual Reset.
Low ambient head pressure controller (HPC)
pressure sensor type for monosplit is composed by:
Dual speed fan motor, pressure sensor and interface
relay.
The head pressure controller allows operation in
cooling mode up to –5°C (mod. 007, 009) and –10°C
(mod. 012, 018, 024) ambient temperature keeping the
condensing temperature always above 41°C - 42°C.
The “HPC” automatically feels the possible heating
mode working, allowing in this case the outdoor unit
fan motor to operate at full speed (high).
– LRPS Loss of refrigerant pressure switch: brazed between
outdoor coil and expansion device. When unit is
working, the pressure “high side” drops below 345kPa
(3.45 bar; 50 psig) for refrigerant losses, the
compressor cannot restart.
Set point
– open at 345 kPa (3.45 bar; 50 psig) pressure
– close at 650 kPa (6.5 bar; 95 psig) pressure
햲 Head pressure sensor
햳 High pressure cut-out (07 to 12)
햴 Loss of refrigerant pressure switch (“S” units only)
햵 Anti freeze thermostat
햶 Pressure service port
햷 High pressure cut-out (18 and 24)
햸 Dual speed fan motor (“S” units only)
Indoor unit
Outdoor unit
Cooling only
38GLS...G
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