Alpha-InnoTec HT 6Split Installation And Operating Manual page 16

Pressure test and leakage test
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.
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.
Vacuum pump
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.
Measurement output
Wyjście pomiarowe Mätuttag
Maintenance
Zawór serwisowy,
Serviceventil, vätska
valve - liquid ciecz
Zawór serwisowy,
Maintenance
Serviceventil, gas
gaz
valve - gas
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.
Filling the system with a cooling medium
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.
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.
Chapter 4 |
16 Pipe connections
Manometer
Manometr
Manometer
Vacuum
Pompa
Vacuum
pump
próżniowa pump
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.
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.
Insulation of cooling medium pipes
• 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.
•
Principle:
Wires for connecting indoor
Okablowanie
Cabling
and outdoor units
Wires for connecting indoor
Okablowanie
and outdoor units
Liquid piping
Rura z cieczą
Pipe for liquid
Liquid piping
Rura z cieczą
Przyłącza:
Connections:
Przyłącza:
Band (accessory)
Zworka Pipe cover (accessory)
Zabezpieczenie rury
Band (accessory)
Zworka
Jumper
CAUTION
All connections and work related to the refrigeration
system must be made by a person with appropriate
authorizations and certificates.
Exterior tape
Taśma
Tape
Exterior tape
Taśma
Gas piping
Rura gazowa
Gas pipe
Gas piping
Rura gazowa
Insulation
Izolacja
Insulation
Insulation
Izolacja
Pipe cover (accessory)
Zabezpieczenie rury
Pipe protection
HT 6Split
HT 12Split