Unit installation

Introduction

1.2.3 SCR Electric Reheat

The optional electric reheat is pulsed rapidly to provide precise temperature control, while cooling is

locked on. A safety switch prevents the reheat from exceeding temperature limits.

1.2.4 Hot Water Reheat

The optional hot water reheat circulates building hot water through a cleanable Y-strainer, solenoid

valve and finned-tubed heating coil to provide reheat.

1.2.5 Hot Gas Bypass (Condensing Units)

This optional system bypasses hot gas around the compressor directly to suction to provide capacity

control and reduce compressor cycling. System includes liquid injection valve to maintain proper suc-

tion superheat.

1.2.6 Free-Cooling Coil

A separate source of chilled water can be used to provide cooling. Upon loss of the chilled water

source, cooling is switched to DX cooling.

1.2.7 Smoke Detector

If smoke is detected in the return air, the unit display sounds an audible signal and the unit shuts

down.

1.2.8 Firestat

When the return air temperature limit of approximately 125°F (51.7°C) is exceeded, the unit shuts

down.

1.2.9 Filter Clog

If high pressure differential is detected in the return air, an adjustable pressure differential switch

sounds an audible signal.

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 condensing unit) to a sin-

gle power source when the units are close coupled. The kit includes a junction box with power distri-

bution, sub-fusing and evaporator and condenser wiring.

1.3.2 Refrigerant Line Sweat Adapter Kit

This kit includes the compatible fittings required (two suction and two liquid line connections) when

using field supplied interconnecting refrigerant lines.

1.3.3 Return Air Filter Box with Duct Collar Kit

A return air filter box with duct flange, 4" (102mm) filter and a supply air duct flange are provided for

ducting the evaporator air.

1.3.4 Condensate Pump Kit

A condensate pump is required when the evaporator is installed below the level of the gravity-fed

drain line. Components include: the pump; check valve; sump; level sensor; float switch; and controls.

Refer to detailed instructions and drawings supplied with the pump.

1.3.5 Remote Monitoring and Control

Liebert can provide a variety of remote monitoring and control devices to enhance your Mini-Mate2

system. These include water detection, remote monitoring of a single unit and remote control/moni-

toring of multiple units.

1.3.6 Remote Sensors

Remote temperature/humidity sensors can be mounted in the controlled space or in ductwork and

includes 30 feet of control cable.