Alpha-InnoTec HT 12Split, Инструкция по установке и эксплуатации, Страница: 16 / 80

16
HT 6Split
HT 12Split
Pressure test and leakage test
Vacuum pump
Insulation of cooling medium pipes
Filling the system with a cooling medium
A
B
Vacuum
pump
Serviceventil, gas
Mätuttag
Manometer
Serviceventil, vätska
Zawór serwisowy,
ciecz
Zawór serwisowy,
gaz
Wyjście pomiarowe
Manometr
Pompa
próżniowa
Both HT 6Split / HT 12Split and LSplit are facto-
ry-tested for pressure and leakage, but pipe connec-
tions between the devices must be checked when the
installation has been completed.
When executing pipe connections, pressure tests,
leakage tests and vacuum tests, maintenance valves
(QM35, QM36) must be closed. To fill the pipes and
HT 6Split / HT 12Split with a refrigerant medium main-
tenance valves should be opened again.
Connections:
Principle:
• Cooling medium (both gas and liquid) pipes must
be insulated to provide thermal insulation and
prevent condensation.
•
Apply insulation that can sustain at least 120°C.
Use a vacuum pump to remove all air. Turn on ex-
traction for at least one hour. Final pressure, after
emptying, must total 1 mbar (100 Pa, 0.75 Tr or 750
microns) of absolute pressure. If the system is still
moist or is leaking, negative pressure will grow after
the end of emptying.
IMPORTANT
Pipe connections between devices must undergo a
pressure test and leakage test after completing the in-
stallation process, according to applicable regulations.
Use nitrogen only for system compression and rinsing.
ADVICE
In order to achieve a better final effect and to acceler
-
ate emptying, follow the following sections.
•
Pipelines should have the largest diameter possi-
ble, and be as short as possible.
•
Empty the system to 4 mbar and fill it with dry ni
-
trogen to atmospheric pressure to end emptying.
LSplit is supplied together with a cooling medium for
cooling medium of max. length of 15 m. If the length
of the cooling medium pipes exceeds 15 m, supple-
ment the cooling medium in the volume of 0.06 kg/m
for HT 12Split and 0.02 kg/m for HT 6Split.
IMPORTANT
In the case of systems with cooling medium pipes with
the length of up to 15 m, the supplied volume of the
cooling medium is sufficient.
Wires for connecting indoor
and outdoor units
Exterior tape
Gas piping
Insulation
Liquid piping
Okablowanie
Rura z cieczą
Taśma
Rura gazowa
Izolacja
Przyłącza:
Band (accessory)
Pipe cover (accessory)
Zworka
Zabezpieczenie rury
Wires for connecting indoor
and outdoor units
Exterior tape
Gas piping
Insulation
Liquid piping
Okablowanie
Rura z cieczą
Taśma
Rura gazowa
Izolacja
Przyłącza:
Band (accessory)
Pipe cover (accessory)
Zworka
Zabezpieczenie rury
Chapter 4 |
Pipe connections
Measurement output
Maintenance
valve - liquid
Maintenance
valve - gas
Manometer
Vacuum
pump
Cabling
Tape
Gas pipe
Insulation
Pipe for liquid
Jumper
Pipe protection
CAUTION
All connections and work related to the refrigeration
system must be made by a person with appropriate
authorizations and certificates.
CAUTION
The maximum permissible length of the refrigerant pipes
can be 30m, but this requires topping up the installation
with a refrigerant after exceeding 15m.