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Precision Cooling
For Business-Critical Continuity™
™
Liebert Mini-Mate2
User Manual - 8 Tons, 50 & 60Hz
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TABLE OF CONTENTS MODEL NUMBER NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V 1.0 PRODUCT FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 1.1 Standard Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1.1 Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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2.7 Indoor Water- and Glycol-Cooled Condensing Unit Installation. . . . . . . . . . . . . . . . . . . . . . 27 2.7.1 Location Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 2.7.2 Piping Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 2.7.3 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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4.3 Reheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 4.3.1 Electric Reheat - Staged. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 4.3.2 SCR Electric Reheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 4.4 Dehumidification / Humidification Percent Required . . . .
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FIGURES Figure 1 System configurations—air cooled systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 2 System Configurations—water/glycol systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 3 System Configurations—chilled water systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 4 Threaded rod and hardware kit installation . . . . . . . . . . . . . . .
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MODEL NUMBER NOMENCLATURE Evaporators and Chilled-Water Units Indoor Condensing Units MMD96E-AHEL0 (example) MCD96ALA00 (example) MM Mini-Mate2 MC Mini-Mate2 Indoor Condensing Unit 0 = No Disconnect 0 = No Disconnect D D D = Disconnect D= Disconnect 96E- = 8-ton Evaporator, 60 Hz 96A = 8-ton Air-Cooled Centrifugal, 60 Hz 95E- = 8-ton Evaporator, 50 Hz 95A = 8-ton Air-Cooled Centrifugal, 50 Hz 96E- 96A 8TCD = 8-ton Chilled-Water w/ 2-way valve 98W = 8-ton Water/Glycol-Cooled, 60 Hz 8TCT = 8-ton C
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vi
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Product Features 1.0 PRODUCT FEATURES 1.1 Standard Product Features The Mini-Mate2 is a temperature/humidity control system designed to be installed above a ceiling grid system. The unit is available as a split system evaporator to be matched with an Indoor Centrif- ugal Fan Condensing Unit, Outdoor Prop Fan Condensing Unit, or Indoor Water/Glycol Condensing Unit. A self-contained Chilled Water Fan Coil is also available. 1.1.1 Controls The Mini-Mate2 system includes a wall-mounted display pan
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Product Features 1.2 Optional Equipment 1.2.1 Canister Humidifier The optional, factory-installed steam generating humidifier adds pure water vapor to the room air to control humidity. Room humidity setpoints are established by the user. The humidifier components include: a steam canister (replaceable), control board, inlet strainer, fill and drain valves. 1.2.2 Electric Reheat The 304/304 stainless steel electric reheat is energized when required to heat room air or to control room temperatu
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Product Features 1.3 Ancillary (Ship Loose Accessories) 1.3.1 Single Point Power Kit A Single Point Power Kit allows the connection of a system (Evaporator and indoor condensing unit) to a single power source when the units are close coupled. The kit includes a junction box with power distribution, sub-fusing, and evaporator and condenser wiring. 1.3.2 Refrigerant Line Sweat Adapter Kits This kit includes the compatible fittings required (four suction and four liquid line connections) when us
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Site Preparation and Installation 2.0 SITE PREPARATION AND INSTALLATION NOTE Before installing unit, determine whether any building alterations are required to run piping, wiring, and duct work. Carefully follow all unit dimensional drawings and refer to the submittal engineering dimensional drawings of individual units for proper clearances. 2.1 Installation Considerations The evaporator unit is usually mounted above the suspended ceiling using field supplied threaded rods. Refer to Figure 1
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Site Preparation and Installation 2.1.2 Location Considerations CAUTION ! Units contain water. Water leaks can cause damage to sensitive equipment below. DO NOT MOUNT UNITS OVER SENSITIVE EQUIPMENT. A field-supplied pan with drain must be installed beneath cooling units and water/glycol-cooled condensing unit. NOTE Do not mount units in areas where normal unit operating sound may disturb the working environment. Locate the evaporator unit over an unobstructed floor space if possible. This wil
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Site Preparation and Installation Figure 1 System configurations—air cooled systems Evaporator Prop Fan Condensing Unit Evaporator Centrifugal Fan Condensing Unit Figure 2 System Configurations—water/glycol systems Cooling Tower WATER-COOLED SYSTEMS Evaporator Water/Glycol GLYCOL-COOLED SYSTEMS Condensing Unit Drycooler Evaporator Water/Glycol Condensing Unit 6
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Site Preparation and Installation Figure 3 System Configurations—chilled water systems COUPLED COMPONENTS (AIR-COOLED SYSTEM Evaporator CHILLED-WATER SYSTEMS Evaporator Condensing Unit Condensate Pump Condensate Pump 2.2 System Weights Table 4 Unit weights Cooling Units* lbs kg MMD96E 665 302 MMD95E 665 302 Condensing Units lbs kg MCD96A 530 241 MCD95A 530 241 MCD98W 470 213 MCD97W 470 213 *Add 40 lbs. (20 kg.) to units with free cooling or hot water reheat coils. 2.3 Equipment Inspection upon r
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Site Preparation and Installation 2.4 Installing the Evaporator or Chilled-Water Units WARNING ! Be sure the supporting roof structure is capable of supporting the weight of the unit(s) and the accessories during installation and service. (See 2.2 - System Weights.) Be sure to securely anchor the top ends of the suspension rods. Make sure all nuts are tight. The evaporator unit and indoor condensing unit are usually mounted above the ceiling and must be securely mounted to the roof structure.
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Site Preparation and Installation 2.4.1 Close Coupled Installations If the evaporator and condensing units are to be mounted side-to-side (close coupled), hang each unit before connecting them together (See Figure 5). If Single Point Power Kit is used, install the box into the evaporator prior to suspending the units. Route power wire flex conduit into condensing unit as units are suspended. Refer to instructions supplied with kit for details. Align bolt holes in the condensing unit and in t
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Site Preparation and Installation 2.4.2 Evaporator Air Distribution Filter Box The optional filter box mounts directly to the return air opening of the evaporator. The filter box is supplied with two (2) 20% (Liebert part no. A-0320) or 30% (Liebert part no. A-0400) 25" x 20" x 4" fil- ters. NOTE Do not operate the unit without filters installed in return air system. Connections for Ducted Systems Use flexible duct work or non-flammable cloth collars to attach duct work to the unit and to help
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Site Preparation and Installation 2.4.3 Piping Connections and Coolant Requirements Drain Line CAUTION ! The drain line must not be trapped outside the unit, or water may back-up in drain pan. Drain is internally trapped. This line may contain boiling water. Use copper or other suitable material for the drain line. Sagging condensate drain lines may inadvertently create an external trap. A 3/4 in. (19.1 mm) female pipe thread (FPT) connection is provided for the evaporator coil condensate dra
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Site Preparation and Installation Condensate Pump The optional condensate pump kit is required when the evaporator is installed below the level of the gravity-fed drain line. Refer to the installation instructions provided with the condensate pump kit. Figure 7 Condensate pump installation 3/8" Compression Fitting Drain Connection Power Supply from Electric Service Power Drain Line Block in Fan/Coil Module. (field supplied) Evaporator or Chilled Water Condensate Pump Unit AIR INLET FRONT OF UN
