GB - 8
38GL...G / 38GLS...G / 38YY...G / 38YYS...G
Refrigerant connections
m Pipe
n Pipe insulation
o Fastening tape
m
n
o
Air purging
Use only a vacuum pump to purge air from the piping.
NEVER use the system compressor as a vacuum pump.
NEVER use the unit refrigerant gas to purge the connecting
pipes.
No additional refrigerant has been provided in the unit for this
purpose.
Remove the caps from the two and three-way valves.
Create a vacuum with a vacuum pump connected to the service
connection of the suction shut-off valve, as shown, keeping the
shut-off valves completely shut until a 50 Pa (0.5 mbar) vacuum
has been reached.
Now open the two-way valve for 3 sec., then quickly shut it to
check for possible leaks.
After the leak check, fully open the two and three-way valves.
Replace caps and check for leaks.
Once all connections have been completed, check for leaks by
using a leak detector specific for HFC refrigerants.
Finally wrap the valves and pipes with anti-condensate insulation
and tighten this with tape, without exerting too much pressure on
the insulation.
Repair and cover any possible cracks in the insulation.
Fix the pipes to the wall with hooks or conduits.
l
j
k
h
g
a
b
c
d
f
e
g
c
i
h
Cooling (2)
Maximum conditions
Outdoor temperature 43°C
Indoor temperature 32°C d.b.; 23°C w.b.
Minimum conditions
Outdoor temperature 15°C (4)
Indoor temperature 21°C d.b.; 15°C w.b.
Heating (3)
Maximum conditions
Outdoor temperature 24°C d.b.; 18°C w.b.
Indoor temperature 27°C d.b.
Minimum conditions
Outdoor temperature –15°C d.b.; –17°C w.b.
Mains power supply Nominal single-phase voltage 230V ~ 50Hz 220V-240V ~ 60Hz
Operating voltage limits min. 198V – max. 264V
Table III: Operating limits
(1)
Notes: 1. Data referred to the outdoor unit only.
2. According to ISO 5151.2/T1.
3. According to ISO 5151.2/High+.
4. The units 38YYS018 and 38YYS024 are equipped with a
high pressure cut-out, which is suitable for outdoor
temperatures up to -15C°.
d.b. - dry bulb w.b. - wet bulb
WARNING:
During heat pump operation unit will undergo several defrost cycles to
eliminate ice that might possibly collect on the outdoor unit in very low
ambient temperatures.
In these cycles, fan speed will automatically reduce and cannot be
varied until defrost cycle is completed.
g Gas line (large diameter)
h Liquid line (small diameter)
i Flare nut
j Indoor unit
k Outdoor unit
l Vacuum pump
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