AEC FSS Series 1.5- 10 HP Fountain Solution Systems - Manual (Page 31)

Page 30 FSS Series Fountain Solution Systems
IAE-600
3-7 FSS-R Series with Remote Condenser
FSS-R Series circulators are shipped with a nitrogen holding
charge and a full charge of oil (excluding the amount needed for
field piping). The FSS-R condenser is shipped with a dry air
charge. Verify that the holding charge has not been lost prior to
installation. If there is no pressure, leak test the unit and repair
before installing the interconnecting refrigerant piping. Read this
complete section before installation.
Important!
Piping should be type ‘L’ or type ‘K’ refrigerant grade copper tubing only.
Proper sizing and installation has a significant effect on system performance,
reliability, and safety!
Interconnecting Refrigerant Piping
The circulator and condenser refrigerant lines are terminated with a
cap and brazed closed. Do not use a saw to remove the end caps
since this will allow copper chips to contaminate the system. Use
a tube cutter to remove caps. A certified refrigeration contractor
need only to install the interconnecting refrigerant piping between
the FSS-R circulator and the outdoor air-cooled condenser. For
safe reliable operation, this piping must be properly sized, Type
‘L’ or Type ‘K’ high temperature brazed, refrigerant grade tubing.
Following all codes, install a customer supplied, 400 psi approved,
refrigerant relief valve in the discharge line at the condenser.
When brazing copper joints, flow dry nitrogen through the system.
This will prevent carbon/scale formation that causes
contamination. Isolate the refrigerant lines from the building,
preventing transfer of line vibration to the structure. Do not secure
the lines rigidly.
Leak check and evacuate the system down to 400 microns. A
decay of 50 microns after one hour is acceptable.
!
CAUTION
To prevent injury or death due to explosion and/or inhalation of phosgene gas,
purge system thoroughly while brazing refrigerant piping connections. Use a
pressure regulator in the line between the unit and the high-pressure nitrogen
cylinder to avoid over-pressurization and possible explosion.