Lennox VPB Series, Installation & Operation Instructions

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Table 6. VMDB or V33B Indoor Unit Capacity Ratio over 80% of All Indoor Units
Additional Charge Amount
Outdoor Unit
Pounds of additional refrigerant if ratio
of VMDB Indoor units exceeds 80% of all
indoor units.
Pounds of additional refrigerant if ratio of
V33B indoor units exceeds 80% of all indoor
units.
VRB072H4M 3.31 3.53
VRB096H4M 4.19 4.85
VRB120H4M 5.29 6.61
VRB144H4M 6.39 7.72
VRB168H4M 7.39 13.23
VRB192H4M 8.38 15.87
VRB216H4M 9.26 15.87
VRB240H4M 10.93 15.87
VRB264H4M 12.08 15.87
VRB288H4M 13.76 15.87
VRB312H4M 15.12 16.18
VRB336H4M 16.20 16.49
VRB360H4M 17.73 16.80
VRB384H4M 17.73 17.11
VRB408H4M 17.73 17.42
VRB432H4M 17.73 17.73
VRB456H4M 17.73 17.73
VRB480H4M 17.73 17.73
Outdoor Unit
Maximum Additional
Refrigerant Charge
lbs
kg
VRB072H4M
53.07 24.07
VRB096H4M
63.58 28.84
VRB120H4M
66.01 29.94
VRB144H4M
82.03 37.21
VRB168H4M
86.99 39.46
VRB192H4M
98.83 44.83
VRB216H4M
116.25 52.73
VRB240H4M
121.06 54.91
VRB264H4M
148.17 67.21
VRB288H4M
150.18 68.12
VRB312H4M
150.18 68.12
VRB336H4M
166.21 75.39
VRB360H4M
168.23 76.31
VRB384H4M
170.26 77.23
VRB408H4M
189.71 86.05
VRB432H4M
189.71 86.05
VRB456H4M
215.15 97.60
VRB480H4M
226.19 102.60
Table 7. Maximum Additional Refrigerant Charge Amount
!
Contact the Lennox VRF applications department for assistance If the additional charge for the system exceeds the
amount listed in this table or for other assistance with calculating additional refrigerant charge.