Idiomas disponibles
Idiomas disponibles
SAFETY PRECAUTIONS (Continued)
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electric heater).
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cal damage in operation and service, and be in compliance with national and
local codes and standards, such as ASHRAE 15, IAPMO Uniform Mechanical
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accessible for inspection prior to being covered or enclosed.
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likelihood of hydraulic shock damaging the system
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coating before applying any insulation
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stress by torsion, or other forces, and that they should be checked for mechani-
cal damage annually.
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larger than
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sure tested with an inert gas and then vacuum tested prior to refrigerant charg-
ing, according to the following requirements:
The minimum test pressure for the low side of the system shall be the low side
design pressure and the minimum test pressure for the high side of the system
shall be the high side design pressure, unless the high side of the system, can-
not be isolated from the low side of the system in which case the entire system
shall be pressure tested to the low side design pressure.
The test pressure after removal of pressure source shall be maintained for at
least 1 h with no decrease of pressure indicated by the test gauge, with test
gauge resolution not exceeding 5% of the test pressure.
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or less, the refrigeration system shall be isolated from the vacuum pump and the
pressure shall not rise above 1500 microns within 10 min. The vacuum pressure
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the value required for compliance with national and local codes and standards,
which may vary between residential, commercial, and industrial buildings.
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following requirements: The test method shall have a sensitivity of 5 grams per
year of refrigerant or better under a pressure of at least 0,25 times the maximum
allowable pressure. No leak shall be detected.
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priate refrigerant detector prior to and during work, to ensure the technician is
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OM-B142 ZU A5 EN.indd 5
2
2
(4 m
).
EN-5
pipe work
shall be pres-
2022/7/22 10:59:13
