Air Purging - Carrier 38TYG H7 Serie Manual De Instalación

38TYG---H7/38TYG---H9
38TYP---H7/38TYP---H9
Refrigerant connections
!
Three-way valve
Needle valve
Valve cap
Valve needle
Two-way valve
Allen (hex. head) wrench
Gas line (large diameter)
Liquid line (small diameter)

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 and discharge 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. Do not go beyond the valve stop limit.
Replace caps and check for leaks.
Table III: Operating limits
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
Heat pump units
Zone
Cooling mode (2)
Indoor
Maximum
Minimum
Outdoor
Maximum
Minimum (3)
1 - Data referred to the outdoor unit only.
2 - According to ISO 5151.2/T1
3 - The 38TYP units are fitted with Head Pressure Controller and can be operated at an outside temperature up to -15°C.
4 - 38TYP/38TYG-050H7 - db - 8°C
d.b. - dry bulb w.b. - wet bulb
GB-17
Flare nut
Indoor unit
Outdoor unit
Vacuum pump
Discharge Service Port
(1)
Temperature
dry bulb wet bulb
+32°C +21°C
+19°C +15°C
-
+46°C
-
+15°C
It is recommended to
Evacuate From both ports !!!
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.
Zone
Heating mode (2)
Indoor
Maximum
Outdoor
Maximum
Minimum (4)
Pipe
Pipe insulation
Fastening tape
Temperature
dry bulb wet bulb
+27°C -
+24°C +18°C
-15°C -17°C