Technical data

Refrigerant Piping
26
10.0 REFRIGERANT PIPING
Table 21 Refrigerant charge
60 Hz 50 Hz Charge R-407C, oz (kg)
DME020E DME020E 4 (0.11)
DME027E DME027E 5 (0.14)
DME037E DME037E 6.5 (0.18)
MC*24AL_H7 MC*23AL_H7 134 (3.80)
MC*36AL_H7 MC*35AL_H7 213 (6.04)
MC*26W__H7 MC*25W__H7 41 (1.16)
MC*38W__H7 MC*37W__H7 54 (1.54)
DMC022WG N/A 47 (1.33
DMC029WG N/A 59 (1.67
DMC040WG N/A 61 (1.72)
PFH020A-_L7 PFH019A-_L7 134 (3.80)
PFH027A-_L7 PFH026A-_L7 134 (3.80)
PFH027A-_H7 PFH026A-_H7 213 (6.04)
PFHZ27A-_L7 PFHZ26A-_L7 213 (6.04)
PFH037A-_L7 PFH036A-_L7 213 (6.04)
PFH037A-_H7 PFH036A-_H7 426 (12.08)
PFHZ37A-_L7 PFHZ36A-_L7 426 (12.08)
Table 22 Recommended refrigerant line sizes
Equivalent
Length, ft (m)
1.5-Ton 2-Ton 3-Ton
Suction Liquid Suction Liquid Suction Liquid
50 (15.2 5/8"3/8"7/8"3/8"7/8"1/2"
100 (30.5) 7/8" 3/8" 7/8" 1/2" 1-1/8" 1/2"
150 (45.7) 7/8" 1/2" 7/8" 1/2" 1-1/8" 1/2"
* Suction line and liquid line sizing based on < 3 psi pressure drop in each and suction line
refrigerant velocities >700FPM (3.6m/s).
Table 23 Pipe length and condenser elevation relative to evaporator
Nominal
System Size
Tons
Max. Equiv.
Pipe Length
ft. (m)
Maximum PFH
Level Above
Evaporator, ft. (m)
Maximum PFH
Level Below
Evaporator, ft. (m)
1.5 & 2 150 (45) 40 (12) 15 (4.6)
3 150 (45) 50 (15) 15 (4.6)
Maximum recommended total equivalent pipe length is 150 ft (46m). Suction and liquid lines may require additional specialty items
when vertical lines exceed 20 ft. (6m) and/or condensing unit installation is more than 15 ft. (4.6m) below the evaporator. Contact
Emerson Application Engineering for assistance.
Table 24 Refrigerant charge in Liebert pre-charged R-407C line sets
Line Size, in. Length, ft. (m) Charge R-407C, oz (kg)
3/8 liquid
15 (4.5) 5 (0.14)
30 (9) 10 (0.28)
5/8 or 7/8 suction
15 (4.5) 5 (0.14)
30 (9) 10 (0.28)