Site Preparation and Installation
Total refrigerant = Units and Lines*
Table 11 Refrigerant charge
| Model # | |||
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60Hz |
| 50Hz | ||
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MM*60E |
| MM*59E | 4 (0.11) | |
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| |
MM*60K |
| MM*59K | 4 (0.11) | |
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|
MC*65A |
| MC*64A | 432 | (12.3) |
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|
MC*69W |
| MC*68W | 94 | (2.7) |
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|
| 426 | (12.1) | ||
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|
| 827 | (23.4) | ||
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|
| 827 | (23.4) | ||
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|
All evaporator units and condensing units are fully
Table 12 Line charges - refrigerant per 100 ft. (30m) of Type L copper tube
Line Size, | |||
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| |
O.D., in. | Liquid Line | Suction Line | |
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3/8 | 3.7 | (1.7) | — |
1/2 | 6.9 | (3.1) | — |
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| |
5/8 | 11.0 (5.0 | 0.4 (0.2) | |
3/4 | 15.7 (7.1) | 0.6 (0.3) | |
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|
7/8 | 23.0 | (10.4) | 1.0 (0.4) |
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| |
— | 1.7 (0.7) | ||
— | 2.7 (1.1) | ||
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Quick Connect Fittings
NOTE
When hard piping is used, complete all piping and evacuate lines before connecting quick connects.
Be especially careful when connecting the quick connect fittings. Read through the following steps before making the connections.
1.Remove protector caps and plugs.
2.Carefully wipe coupling seats and threaded surfaces with a clean cloth.
3.Lubricate the male diaphragm and synthetic rubber seal with refrigerant oil.
4.Thread the coupling halves together by hand to insure that the threads mate properly.
5.Tighten the coupling body hex nut and union nut with the proper size wrench until the coupling bodies “bottom out” or until a definite resistance is felt.
6.Using a marker or pen, make a line lengthwise from the coupling union nut to the bulkhead.
7.Tighten the nuts an additional
Table 13 Refrigerant quick connect sizes and torque
Size O.D. | Coupling | Torque |
Cu | Size | |
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1/2” | #10 | |
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#12 | ||
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21 | Liebert® |
