Installation manual

GB - 13
Installation instructions supplement
38GLP---G
38GLP---G9
ENGLISH
38GLP...G units are designed to work in North European countries
climates.
They differ from the standard ones for the following factory fitted
accessories: head pressure controller (HPC), loss of refrigerant
pressure switch (LRPS), and high pressure switch (HIP).
Operating range
Minimum ambient temperature:
min. –15°C max. +43°C
Power supply
Nominal single-phase voltage: 230V ~ 50Hz
Operating voltage limits: min. 198V
max. 264V
Nominal three-phase voltage: 400V 3N~ 50Hz
Operating voltage limits: min. 342V
max. 462V
Features
– HPC - Low ambient head pressure controller (HPC) pressure
sensor type is composed by single speed fan motor,
and a electronic board with pressure sensor.
- The head pressure controller allows operation incooling
mode down to -15°C ambient temperature keeping the
condensing pressure always close to 26,5 bar.
– HIP With remote manual reset high pressure switch is
brased betwen outdoor coil and expansion device.
Remote manual reset function is achieved by means of
an auxiliary relay.
The high pressure switch “HIP” has been selected at
automatic reset. If “HIP” trips, cycle the power supply
OFF and ON to reset the system.
Set point
– open at 4200 Pa (42 bar; 610 psig) pressure
– close at 3000 Pa ( (30 bar; 435 psig) pressure
– LRPS The low pressure switch (loss of refrigerant) is brazed
between outdoor coil and expansion device.
If circuit pressure drops below 345kPa (3.45 bar; 50 psig)
due to refrigerant leaks, the compressor does not start.
Set point
– open at 345 KPa (3,45 bar; 50 psig) pressure
– close at 650 KPa (6,5 bar; 9,5 psig) pressure
Indoor unitOutdoor unit
햲 Head pressure controller (HPC)
햳 Loss of refrigerant pressure switch (LRPS)
햴 Pressure service port
햵 High pressure cut-out (HIP)
햶 Fan motor
Cooling only
햶
햴
햴
햳
햵
햲