Lennox MCFA Service Manual page 72

Number of Zones and Outdoor Unit Connection Sizes
NOTE - Letter = Indoor Unit Zone Connection on Outdoor Unit
Zone 1 (A)
1/4 in. liq + 3/8 in. gas
006
006
009
009
009
012
012
018
006
006
006
006
006
006
006
006
006
009
009
009
009
012
LEGEND:
CLEAR = No adapters required.
GRAY = 3/8 x 1/2 in. gas pipe adapter is required for line set connection to outdoor unit (furnished with outdoor unit).
Table 9. MPC030S4M
Zone 2 (B)
1/4 in. liq + 3/8 in. gas
012
018
009
012
018
012
018
018
006
006
006
006
009
009
009
012
012
009
009
009
012
012
72
Zone 3 (C)
1/4 in. liq + 3/8 in. gas
- - -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
006
009
012
018
009
012
018
012
018
009
012
018
012
012