Technical data

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Refrigerant Piping

Liebert

Mini-Mate2

™

10.0 REFRIGERANT PIPING

Table 14 Refrigerant charge

Unit Type

Model #

Charge R-407C *

oz (kg)60Hz 50Hz

Self Contained-Air MM*12A/F — 42 (1.19)

Self Contained-Water MM*14W/G — 27 (0.77)

Split Evaporator-Air MM*12E/K — 3 (0.085)

Self Contained-Air MM*18A/F — 49 (1.39)

Self Contained-Water MM*20W/G — 28 (0.79)

Split Evaporator-Air MM*18E/K — 4 (0.11)

Split Condensing Unit PFH014A-_L7 — 134 (3.80)

Split Condensing Unit PFH020A-_L7 — 134 (3.80)

Self-contained DX units, split-system evaporators and split-system condensing units are pre-charged with R-407C refrigerant. Use

Table 16 to determine charge to be added to field-fabricated refrigerant lines.

* For units with Hot Gas Reheat coil, add 18oz (0.51kg) refrigerant to listed values.

Table 15 Recommended line sizes, OD Cu

Equivalent

ft. (m)

PFH_14A PFH_20A

Suction Liquid Suction Liquid

50 (15.2) 5/8" 3/8" 5/8" 3/8"

75 (22.9) 5/8" 3/8" 7/8" 3/8"

100 (30.5) 7/8" 3/8" 7/8" 3/8"

125 (38.1) 7/8" 3/8" 7/8" 1/2"

150 (45.7) 7/8" 3/8" 7/8" 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),

horizontal and 1000FPM (5.1m/s), vertical.

Table 16 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 17 Pipe length and condenser elevation relative to evaporator

Nominal System

Size, Tons

Maximum Equiv.

Pipe Length, ft. (m)

Maximum PFH

Level Above

Evaporator, ft. (m)

Maximum PFH

Level Below

Evaporator, ft. (m)

1 or 1.5 150 (45) 40 (12) 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.