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Installation Checklist
33 Liebert
®
SRC™ User Manual
4.0 Installation Checklist
Major Component Rough-in
___ 1. Unit was connected properly per local code and the product installation procedures.
___ 2. All literature and bagged accessories have been removed from the fan discharge.
___ 3.Indoor unit was installed, properly supported, and located indoors in a non-corrosive environment.
___ 4. Unit’s gravity condensate drain line
was connected and routed where it properly drains away or, if
installed in a mechanical room, was connected and properly routed to a drain terminal.
Piping and Insulation
___ 1. Copper
___ 2. Over 5/8 inches—Rigid ACR only
___ 3. 5/8 inches and under—can use soft ACR.
___ 4. 15% silver brazing material only.
___ 5. All refrigerant pipes and valves were insulated separately. Insulation butts up against the walls of
the indoor units. No gaps
or cracks. Insulation was not compressed at clamps and hangers.
Brazing Practices
___ 1. Medical grade (there are 4 available) dry nitrogen for purging during brazing was used (constant
3psi while brazing).
Installation
Refer to the details in the Installation section for more information on any procedure.
Refrigerant Piping
___ 1. All pipe materials were properly stored, capped, and clean. All burrs were removed after cutting
and pipe ends were reamed before brazing.
___ 2. During refrigerant pipe installation, for each segment of pipe, a record was made of the pipe length
(including expansion loops, offsets, doub
le-back sections), and sizes, as well as the quantity and
type of elbows used.
___ 3. All long runs of straight pipe were provided with expansion loops.
___ 4. A torque wrench and backup wrench were used to tighten all flare connections.
___ 5. The back side of
all flares were lubricated with a small drop of PVE refrigeration oil before
tightening flare fittings.
___ 6.Ensure all field-made flares are 45°. Used factory-suppled flare nuts only.
___ 7. Pipe segments were properly supported and all wall penetrations were sleeved.
___ 8. Pipe insulation was not compressed at any point.
___ 9.No oil traps, solenoid valves, sight glasses, filter driers, or any other unauthorized refrigerant
specialties were present.
___ 10. Best practice including a minimum of 20-inch straight pipe was installed between
each elbow .
MFL67502030 17. 7. 13. 오오 3:05 Page 43
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