Liebert Mini-Mate2 MMD24E User Manual

Site Preparation and Installation
Liebert
®
Mini-Mate2
™
22
Table 8 Recommended refrigerant line sizes
Equivalent
Length, ft (m)
2 Ton 3 Ton
Suction Liquid Suction Liquid
50 (15.2) 7/8" 3/8" 7/8" 1/2"
100 (30.5) 7/8" 1/2" 1-1/8"
2
1/2"
150 (45.7) 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 size should be reduced one pipe size for vertical riser sections to
maintain suction line velocity > 1000FPM (5.1m/s) for proper oil return.
Table 9 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)
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 10 Line charges - refrigerant per 100 ft. (30m) of Type L copper tube
Line Size,
O.D., in.
R-407C, lb/100 ft. (kg/30m)
Liquid Line Suction Line
3/8 3.7 (1.7) —
1/2 6.9 (3.1) —
5/8 11.0 (5.0 0.4 (0.2)
3/4 15.7 (7.1) 0.6 (0.3)
7/8 23.0 (10.4) 1.0 (0.4)
1-1/8 — 1.7 (0.7)
1-3/8 — 2.7 (1.1)
Table 11 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)
Table 12 Equivalent lengths for various pipe fittings, ft (m)
Copper Pipe
OD, in.
90 Degree
Elbow Copper
90 Degree
Elbow Cast
45 Degree
Elbow Tee
Gate
Valve
Globe
Valve
Angle
Valve
1/2 0.8 (0.24) 1.3 (0.39) 0.4 (0.12) 2.5 (0.76) 0.26 (0.07) 7.0 (2.13) 4.0 (1.21)
5/8 0.9 (0.27) 1.4 (0.42) 0.5 (0.15) 2.5 (0.76) 0.28 (0.08) 9.5 (2.89) 5.0 (1.52)
3/4 1.0 (0.3) 1.5 (0.45) 0.6 (0.18) 2.5 (0.76) 0.3 (0.09) 12.0 (3.65) 6.5 (1.98)
7/8 1.45 (0.44) 1.8 (0.54) 0.8 (0.24) 3.6 (1.09) 0.36 (0.1) 17.2 (5.24) 9.5 (2.89)
1-1/8 1.85 (0.56) 2.2 (0.67) 1.0 (0.3) 4.6 (1.4) 0.48 (0.14) 22.5 (6.85) 12.0 (3.65)
1-3/8 2.4 (0.73) 2.9 (0.88) 1.3 (0.39) 6.4 (1.95) 0.65 (0.19) 32.0 (9.75) 16.0 (4.87)
1-5/8 2.9 (0.88) 3.5 (1.06) 1.6 (0.48) 7.2 (2.19) 0.72 (0.21) 36.0 (10.97) 19.5 (5.94)
Refrigerant trap = Four times equivalent length of pipe per this table

Liebert Mini-Mate2 MMD24E Specifications

General

Brand	Liebert
Model	Mini-Mate2 MMD24E
Category	Air Conditioner
Language	English