LG Multi V ARUN053GF2, Installation Manual

Page: 43 / 76

43
Refrigerant Piping Connections
Due to our policy of continuous product innovation, some specifications may change without notification.
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refrIGerant PIPInG connectIons
Refrigerant Piping Insulation
Figure 44: Joints between branch and pipe should be sealed
with tape included in each kit.
Insulator
(included with kit)
Liquid and vapor
pipe joints
Insulator for
field piping
Tape
(field supplied)
Insulate the header using
the insulation attached to
the branch pipe kit as shown.
Insulator
Field pipe
insulator
Tape
Figure 45: Y-Branch Insulation.
Figure 46: Header Insulation.
Figure 47: Capped pipes should be insulated using the cap included in each kit, and then taped as shown.
Tape
Cap pipe
Pipe Insulator Cap
(included with Header Kit)
additional Insulation for y-Branches and Headers May be required in Humid environments.
If the system has been operating for a long time in a high humidity environment (dew point temperature: more than 73°F), condensate is likely
to form. If this happens, install 3/8 inch thick ethylene propylene diene methylene (EPDM) insulation that is plenum-rated with a heat-resis -
tance factor of more than 248°F.
applying Insulation to y-Branch and Header fittings
Check the fit of the insulation jacket provided with the LG Y-branch and Header kits after all pipes are brazed to fittings. Mark all pipes at the
point where the insulation jacket ends. Remove the jacket. Install field-supplied insulation on the pipe segments first, and then install the LG
provided insulation plugs on the ends of all unused Header ports. Apply the clam-shell insulation on jackets to Y-branch and Header fittings
last. Peel the adhesive glue protector slip from the insulation jacket and install the clam-shell jacket over the fitting.