Engineering Manual

Material
Polyolefin Foam
8/)ODPH&ODVVL¿FDWLRQ
HF-1
Density
1.84 lbs./ft.
3
Thermal Conductivity
.0208 Btu/h/ft. ºR
Thickness
1/2 inch
Table 124: Fitting Properties.
Liquid and Gas
Pipe Joints
Y-Branch Kit Insulation
Insulation for
Field-Installed Piping
Field-Supplied Insulation Tape
CUT SHEET
Y-Branch Kit
Model Y-Branch Type
3RUW,GHQWL¿HULQFK
123
PMBL5620
Liquid Ø3/8 Ø3/8 Ø3/8
Vapor Ø3/4 Ø3/4 Ø3/4
Y-Branch Type
Dimensions (inch)
XY
Liquid 13.80 3.24
Vapor 12.48 3.02
• LG Y-Branch Kit PMBL5620 is required when installing two branch
distribution units in parallel on one LG Multi F MAX system.
• The kit must be properly installed following instructions in the appli-
cable LG manual. Field-supplied branch fittings are not permitted.
• Kit components must be kept free of debris and be dry before
installation.
• All Y-Branch Kits include a clam shell, peel-and-stick insulation
jacket.
Table 125: Multi F MAX Y-Branch Connection Diameters.
Material
Copper
Design Pressure
551 psig
Table 126: Insulation Jacket Properties.
A
B
X
Y
1
2
3
A = To Outdoor Unit
B = To Branch Distribution Unit
1
2
3
Figure 291: <%UDQFK3RUW,GHQWL¿HU'LDJUDP
Figure 292: Y-Branch Dimensions Diagram.
Figure 293: Y-Branch Insulation Jacket Diagram.
'XHWRRXUSROLF\RIFRQWLQXRXVSURGXFWLQQRYDWLRQVRPHVSHFL¿FDWLRQVPD\FKDQJHZLWKRXWQRWL¿FDWLRQ
©/*(OHFWURQLFV86$,QF(QJOHZRRG&OLIIV1-$OOULJKWVUHVHUYHG³/*´LVDUHJLVWHUHGWUDGHPDUNRI/*&RUS
DESIGN & PRACTICES | 207
Refrigerant Piping Design and Best Practices
MULTI
F
MAX
MULTI
F