Liebert Mini-Mate2 MMD24E User Manual

System Performance Microprocessor Controls
Liebert
®
Mini-Mate2
™
54
7.1.3 Heating Operation
Electric Heat or Hot Water
The reheat stage is ACTIVATED when the temperature control calculates a requirement of 100%.
Conversely, the reheat is DEACTIVATED when the heat requirement is 50% less than the activation
point.
Ground Current Detector (GCD)
A Ground Current Detector is factory-installed on all 1-ton through 3-ton Liebert Mini-Mate2 units
with reheat. The GCD detects reheat leakage current and shuts down operation of the reheat. A
steady green LED indicates that the reheat is operating properly. A red LED indicates that the reheat
has failed and both the reheat element and GCD need to be replaced.
Figure 30 Ground current detector
!
WARNING
Do not remove or disable the ground current detector. Failure to leave the GCD in place could
result in smoke or fire.
!
WARNING
Risk of heater element failure, smoke and fire. Can cause building and equipment damage,
injury or death.
Do not remove or disable the ground current detector.
Liebert
Unit
Control
Current
Sensing
and
One-Shot
Control
Circuit
Current
Transformer
BR - Backup
Contactor
If Present
RH - Reheat
Contactor
Or
SCR Control
Reheat
Assembly
RH Contactor Or
BR Contactor,
As Required
ALM
ALM
24G
24H
24G
24H
24DG
24DH
CT2
CT1
Jumper

Liebert Mini-Mate2 MMD24E Specifications

General

Brand	Liebert
Model	Mini-Mate2 MMD24E
Category	Air Conditioner
Language	English