Emerson Figure i manual General System Charge Requirements, Evaporator Charge Levels

Installation

2.5.6General System Charge Requirements

Liebert split system units are designed with quick-connect fittings and are factory-charged to proper levels. Due to the wide range of operating ambients and sensitivity of the system components to charge level, the system charge must be maintained at recommended levels.

If there is any doubt that the system has the correct refrigerant charge level, the correct procedure is to remove the entire system charge, evacuate the system and weigh in the recommended factory charge total for both units and any line sets or field piping.

Tables 7, 8, 11 and 12 are included for field piping allowances, condensing unit charges, line sets and evaporator charges.

Total refrigerant charge = evaporator + lines + condensing unit

NOTE

All condensing units and most evaporator units are fully charged with refrigerant. Some evaporator units are shipped from the factory with a nitrogen holding charge only. (Refer to evaporator serial tags.) If field-supplied refrigerant piping is installed, refrigerant must be added to the system. Refer to Figure 12 for field-supplied piping guidelines.

Table 12 Evaporator Charge Levels

	Evaporator	Charge R-407C
Indoor Unit	Models	oz (kg)
	MMD11/12E	3 (0.085)
	MMD17/18E	4 (0.113)
Liebert	MMD23/24E	7 (0.198)
Mini-Mate2	MMD35/36E	7 (0.198)
	MMD59/60E	4 (0.113)
	MMD95/96E	7 (0.198) each circuit
	DME020E	4 (0.113)
Liebert DataMate	DME027E	5 (0.141)
	DME037E	6.5 (0.184)
Liebert Challenger	BF/BU036E	9 (0.255)
3000	BF/BU060E*	13 (0.368)

*Evaporator is charged with nitrogen at the factory

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