26
Hillphoenix Refrigeration Systems
CO
2
One Condensing Unit
Section 4: T
ranspor
t and Installation
IMPORTANT:
In the vertical section of the pipe
create siphons every 6.5 - 9.8 feet
. In the horizontal section,
create inclination of the piping of 2 - 3%
, in the flow direction of the refrigerant.
ATTENTION: The outlet pipe of the relief valve must be sized in compliance with local codes
and ordinances.
The relief valve is sized for use with a discharge tube no longer than 32.8 feet. The conveyance is needed where
it is necessary to send the gas leaving the relief valve outside a machine room.
The connections are designed to permit welding or brazing in accordance with material type. In general, steel
requires welding, while other materials such as K65 or copper require brazing.
ATTENTION: The equipment is supplied under nitrogen pressure. Before working on the
connections, reduce the pressure by opening the appropriate service valves for the pressure
outlets in the circuit. If there is no pressure in the circuit, do not install the equipment and
instead contact Hillphoenix Technical Support.
ATTENTION: Prepare the connections by making a clean cut using appropriate tools.
Excessive pressure inside the refrigeration circuit
Excess pressure inside the refrigerating circuit during discharge can compromise system operation and can be
dangerous to personnel. The safeguard against this pressure involves two phases:
• When the pressure reaches values exceeding acceptable conditions as determined by the type of
refrigerant used, the size of the system, and the specifications of the compressor, the maximum pressure
switches intervene and cause the associated compressor to stop.
• Resetting the system can occur automatically or manually, which should only be carried out after
addressing the fault cause. The resetting differs on the basis of the equipment specifications.
ATTENTION: It is strictly forbidden to change calibration of the high-pressure safety switches once
testing has been carried out during initial startup.
•
The pressure of the relief valves is pre-set in accordance with design and safety standards. When
operating, these devices cause leakage and loss, in whole or in part, of the refrigerant charged into
the system.
Summary of Contents for CO2One
Page 1: ...CO2 One CO2 Condensing Unit Manual DECEMBER 2021 ...
Page 8: ...VII ...
