Technical data

Refrigerant Piping
27 Liebert
®
DataMate
™
10.0 REFRIGERANT PIPING
Table 22 Refrigerant charge
60 Hz 50 Hz Charge R-407C, oz (kg)
DME020E — 4 (0.11)
DME027E — 5 (0.14)
DME037E DME037E 6.5 (0.18)
MC*24AL_H7 — 134 (3.80)
MC*36AL_H7 MC*35AL_H7 213 (6.04)
MC*26W__H7 — 41 (1.16)
MC*38W__H7 MC*37W__H7 54 (1.54)
DMC022WG — 47 (1.33)
DMC029WG — 59 (1.67)
DMC040WG — 61 (1.72)
PFH020A-_L7 — 134 (3.80)
PFH027A-_L7 — 134 (3.80)
PFH027A-_H7 — 213 (6.04)
PFHZ27A-_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 23 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" 3/8"
100 (30.5) 7/8" 3/8" 7/8" 1/2" 1-1/8"
2
1/2"
150 (45.7) 7/8" 1/2" 7/8" 1/2" 1-1/8"
2
1/2"
1. Suction line and liquid line sizing based on < 3 psi pressure drop in each and horizontal suction line refrigerant velocities
>700FPM (3.6m/s).
2. Suction sizes should be reduced one pipe size for vertical riser sections to maintain suction line velocity > 1000FPM (5.1m/s)
for proper oil return.
Table 24 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 25 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)