Napoleon 13 SEER Installation And Operating Instructions Manual page 9

6.3.2 Refrigerant Line and Service Valve Connection Sizes
PIPING CONNECTIONS
The outdoor condensing unit must be connected to the matched indoor evaporator coil using field supplied
refrigerant grade (ACR) copper tubing that is internally clean and dry. Units should be installed only with the
tubing sizes for approved system combinations as specified in Table 2.
• USING A LARGER THAN SPECIFIED LINE SIZE COULD RESULT IN OIL RETURN PROBLEMS.
• USING TOO SMALL A LINE WILL RESULT IN LOSS OF CAPACITY AND OTHER PROBLEMS CAUSED BY
INSUFFICIENT REFRIGERANT FLOW.
• SLOPE HORIZONTAL VAPOR LINES AT LEAST 1" EVERY 20 FEET TOWARD THE OUTDOOR UNIT TO
FACILITATE PROPER OIL RETURN.
MODEL
1.5 T ons
2.0 Tons
2.5 Tons
3.0 Tons
3.5 Tons
4.0 Ton s
5.0 Ton s
NOTE
TABLE 2.
Line Sizes
Vapor Line Liquid Line
3/4 3/8
3/4 3/8
3/4 3/8
3/4 3/8
7/8 3/8
7/8 3/8
7/8 3/8
Service Valve Connection Sizes
Vapor Line Liquid Line
Connection Connection
3/4
3/4
3/4
3/4
7/8
7/8
7/8
W415-1395 / C / 06.26.2017
9
IOM
3/8
3/8
3/8
3/8
3/8
3/8
3/8