Pressure And Leak Test - Rinnai Pro Series Installation Manual

Pressure and leak test

Dry nitrogen pressure test
Using dry nitrogen, pressure test interconnecting pipework from the
outdoor unit inclusive of the fan coil unit, to the maximum allowable
pressure as indicated on the data label of the outdoor unit. For more
information refer to
AS/NZS 5149.2.
Air, oxygen, acetylene or refrigerants shall not be used for pressure
testing purposes.
Wear the correct PPE at all time when working with
refrigerants and conducting high pressure tests.
CAUTION
Leak testing
1. Outdoor unit service ports shall be closed or front sealed before
commencing.
2. Connect dry nitrogen bottle with gauge set to the suction line access point and ensure all
fittings are tight.
3. Open the dry nitrogen bottle valves and set test pressure to the maximum allowable pressure
as indicated on the outdoor unit's data label. DO NOT EXCEED.
4. Use an approved leak detector to assess all joints for leaks and from the outdoor service valves
to the connections at the indoor unit. If no leaks are detected close the dry nitrogen valves.
5. With care, safely and slowly commence removal of the pressure supply line from the dry
nitrogen bottle using the bleed to release technique.
6. Once the system pressure has been removed safely you may remove the connecting line from
the service valve on the appliance
Pressure & leak test
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