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INSTALLATION CHECKLIST
PAGE 1
Major Component Rough-In
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All literature and bagged accessories have been removed from the fan discharge.
Indoor units are installed, properly supported, and located indoors in a non-corrosive environment.
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mechanical room, was connected and properly routed to a drain terminal.
Piping and Insulation
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Copper
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15% silver brazing material only.
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.
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(Optional) Full port ball valves for all indoor units. (Schrader between the valve body and the indoor units.)
Condensate piping installed on indoor units–material used is acceptable under local code. Insulated as necessary to prevent
condensation.
Brazing Practices
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Installation
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Refrigerant Piping
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change authorization from the design engineer, because any change made requires the review of the entire tree diagram and
verification that the change did not impact the size of piping segments in other parts of the system.
All pipe materials were properly stored, capped, and clean. All burrs were removed after cutting and pipe ends were reamed
before brazing.
During refrigerant pipe installation, for each segment of pipe, a record was made of the pipe length (including expansion loops,
offsets, double-back sections), and sizes, as well as the quantity and type of elbows used.
All long runs of straight pipe were provided with expansion loops.
Ensure Y-branches are installed with no more than ±5° of horizontal.
Ensure Y-branches are installed with no more than ±3° of vertical.
A torque wrench and backup wrench were used to tighten all flare connections.
The back side of all flares were lubricated with a small drop of PVE refrigeration oil before tightening flare fittings.
Ensure all field made flares are 45°. Use factory-supplied flare nuts only.
Pipe segments were properly supported and all wall penetrations were sleeved.
Pipe insulation was not compressed at any point.
Y-branches were properly supported per details provided in the installation manual.
Ensure Y-branches are installed in the correct direction. Flow is always from the single end to the double end.
No oil traps, solenoid valves, sight glasses, filter driers, or any other unauthorized refrigerant specialties were present.
(Optional) R410A rated full port ball valves were used at all indoor units and at will in the refrigerant piping network.
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