LG Multi V Water IV Installation Manual page 74

REFRIGERANT PIPING INSTALLATION
Pressure (Leak) Testing
Heat Recovery Pressure Test
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During pressurization, the nitrogen gas cylinder must be positioned vertically to prevent the nitrogen from entering the refrigeration
system in its liquid state. Do not position the nitrogen cylinder on its side.
If the ambient temperature changes between the time when pressure was applied and when the pressure drop is checked, adjust results
by factoring in approximately 1.45 psi for each 2°F of temperature difference.
Correction formula = (Temperature when pressure was applied – Temperature when pressure drop is checked) x 0.01.
Example: When pressure (550 psig) was applied, ambient temperature was 80.6°F; 24 hours later when pressure drop (540 psi) is
checked, ambient temperature is 68°F. Thus, (80.6 - 68) x 0.01 = 0.126. In this case, the pressure drop of 0.126 is due to temperature
difference; therefore, there is no leak in the refrigerant piping system.
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Slave WSU
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Due to our policy of continuous product innovation, some specifications may change without notification.
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Master WSU
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