Vertiv Liebert PFD - Refrigerant Charge Calculation

Model # Charge, lb (kg)
MT036HE 1 (0.45)
MT048HE 2.2 (1.0)
MT060HE 2.2 (1.0)
Table 4.5 Indoor Evaporator Approximate R-410Arefrigerant charge
Line Size,
O.D., in.
Liquid Line, lb (kg) Suction Line, lb (kg)
3/8 3.2 (1.4) —
1/2 5.9 (2.7) 0.2 (0.1)
5/8 9.6 (4.3) 0.4 (0.2)
3/4 14.3 (6.4) 0.6 (0.3)
7/8 19.8 (8.8) 0.8 (0.4)
1-1/8 33.8 (15.1) 1.4 (0.6)
1-3/8 51.5 (23.0) 2.1 (1.0)
Source:DPN003099 Rev. 1
Table 4.6 Interconnecting piping refrigerant charge for R-410A, lbper 100ft (kgper30m)
Model # Charge, lb (kg)
PFD037A-*L1 13.4 (6.1)
PFD037A-*H1 27 (12.2)
PFD054A-*L1 27 (12.2)
PFD067A-*L1 27 (12.2)
PFDZ67A-*L1 57 (25.8)
PFD067A-*H1 57 (25.8)
Table 4.7 Liebert® PFD R-410A refrigerant charge
Evacuation and Leak-testing Air-cooled Systems
For proper leak-check and evacuation, you must open all system valves and account for all check valves,
see Figure 4.2 on the next page.
4 Piping and Refrigerant Requirements 15