Installation Checklist - LG LSN120HSV4 Installation Manual

F
MULTI
F
MULTI MAX
System ID No.: _________________________________________________ Indoor Unit ID.: ____________________________________
Checked by: __________________________________ Date:__________________ Signature: ___________________________________
Major Component Rough-In
Description
The unit was connected properly per local code and the product installation procedures.
All literature and bagged accessories have been removed from the fan discharge.
Indoor unit was installed, properly supported, and located indoors in a non-corrosive environment.
The 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
Description
Copper
Over 5/8 inches—Rigid ACR only.
5/8 inches and under—Can use soft ACR.
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.
LG Y-branches were used per manufacturer's recommendations.
(Optional) Full port ball valves for all indoor units. (Schrader between the valve body and the indoor units)
Condensate piping installed on indoor unit (1" ID, 1-1/4" OD). Pipe is insulated to prevent condensation. Pipe material is
acceptable under local code.
Brazing Practices
Description
Medical grade (there are 4 available) dry nitrogen used for purging during brazing (constant 3 psi while brazing).
Installation
(For more information on any procedure, refer to the detail provided in the installation section.)
Refrigerant Piping
Description
Have in possession a copy of the "As-Designed" LATS Multi V piping tree diagram. BEFORE ANY FIELD PIPE SIZE OR LENGTH
CHANGES ARE MADE, PROPOSED CHANGES MUST BE FORWARDED TO THE DESIGN ENGINEER SO THAT THEY CAN
INPUT THE CHANGES INTO LATS and RE-ISSUE A NEW LATS PIPING TREE DIAGRAM. Installer must receive change authori-
zation 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 horizontal Y-branches are installed with no more than ±5° of rotation from horizontal plane.
Ensure vertical Y-branches are installed within ±3° of vertical.
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INSTALLATION CHECKLIST

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