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Site Preparation and Installation
25 Liebert
®
Mini-Mate2
™
Figure 14 Evaporator unit electrical connections
Earth Ground Connection
terminal for field-supplied
earth grounding wire
High-Volt Power Connections
Electric service connection terminals
Factory-installed
disconnect switch
Remote Humidifier Contact
Field-Supplied 24V Class 2
wiring to Terminals 11 &
12, located in field wire
compartment
Optional Condensate Pump Auxilary Float
Switch Connection to Terminal TB1-8 and
TB1-9.
Heat Rejection Connection. Field
supplied 24V NEC class 2 wiring.
See Note 2.
For remote air cooled units from
Terminals TB2-1, 2, 3 & 4 in the
Fan/Coil module to Wires 1, 2, 3 & 4
in the condensing module:
1. 24V GND
2. 24V Supply
3. High Pressure Alarm (OPT)
4. Hot Gas Bypass Connection
Customer Remote Alarm Connection. Field-supplied 24V Class 2 wiring
to connection TB1-1, TB1-2 and TB1-3.
Remote Control Panel Connection to TB3-1,2,3,4 connected
with field-supplied thermostat wire (22ga, shielded/jacketed:
available from Emerson or others). Unit Control Board
terminals marked GND, +5V, T-, T+ must be connected to
corresponding terminals on Remote Control Wall Box
Site Monitoring Connection. Terminals TB4-1(+) TB4-2(-) are for connection
of a 2 wire, twisted pair, communication cable (available from Emerson
or others) to optional Liebert SiteScan
Remote Unit Shutdown. Replace existing jumper between Terminals TB1-4 and TB1-5
with normally closed switch having a minimum 75 VA rating. Use field-supplied 24V
Class 1 wire
Field-supplied unit disconnect switch
when factory unit disconnect switch
is not supplied
Common Alarm Connection.
Field-supplied 24V Class 2 wiring to
common alarm connection TB1-6 and TB1-7.
Electric service not by Emerson
NOTES:
1. Refer to specification sheet for
full load amp. and wire size amp.
ratings.
2. Control voltage wiring must be a
minimum of 16 GA (1.3mm) for up
to 75' (23m) or not to exceed 1 volt
drop in control line
Drycooler/Circulating pump
control circuit TB70-71. Optional
w/Econ-O-Cycle models. Use
field-supplied 24V Class 2 wire.
Field-supplied, field-wired thermostat wire to remote wall box
Entrance for customer
low-voltage connections
Entrance for customer low voltage connections
Field-supplied 24V (NEC Class 2 wiring)
to condensing module (if applicable)
Electrical entrance for
optional condensate
pump on back of unit
Entrance for customer
high-volt connections
DPN000221
Rev. 2