Emerson Liebert Prop Fan Condensing Unit Manual de instalación descargar pdf (Pagina 11)

Introduction

1.0 INTRODUCTION

1.1 Product Description and 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 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 panel that includes a liquid crystal display

(LCD) screen and a 7 membrane keypad. The control is menu-driven for ease of use. Figure 17

depicts the complete menu tree for the control. All control setpoints and alarm setpoints are program-

mable.

1.1.2 Evaporator System Components

DX Evaporator Section

The evaporator section includes the evaporator coil, thermostatic expansion valve, filter dryer and

blower. The evaporator coil is constructed of copper tubes and aluminum fins and is designed for the

high sensible heat ratio required for electronic equipment. Room air circulation is accomplished by a

double inlet, belt driven centrifugal blower that has been dynamically balanced. The blower motor

has self-aligning bearings and lifetime lubrication.

Chilled Water Model

The Chilled Water model is self-contained and is designed for use with an existing chilled water loop.

It contains a chilled water coil and a slow open/close valve or optional modulating valve to control the

flow of chilled water.

1.1.3 Condensing Unit Components

The condensing unit is connected to the evaporator unit by two refrigerant lines and a low voltage

control wire. The condensing unit requires a power source and a power disconnect switch. A single

point power kit is available for close-coupled units.

Air Cooled Condensing Unit (Indoor Centrifugal)

The Air Cooled Condensing units (MC models) include: scroll compressor with crankcase heater, high

pressure switch, condenser coil and Lee-Temp head pressure control with receiver.

Air Cooled Condensing Unit (Outdoor Prop Fan)

Outdoor Air Cooled Condensing Units (PFC models) include: scroll compressor with crankcase heater,

high pressure switch, condenser coil, filter dryer, propeller fan and Lee-Temp head pressure control

with receiver.

Water/Glycol Condensing Unit (Indoor)

The Water/Glycol Cooled Condensing units include: scroll compressor with crankcase heater, high

pressure switch, coaxial condenser and regulating valve. Drycooler and pumps are selected separately

for glycol systems.

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 reheat feature is energized when required to heat room air or to control room temperature during

dehumidification. A safety switch prevents the reheat from exceeding temperature limits.

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Emerson Liebert Prop Fan Condensing Unit Manual de instalación Pagina 11

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