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Wiring to Auxiliary Alarm Panels
The LT460 has two Form-C dry contact alarm output contacts (TB2 &
TB3). Each contact is rated for 24 VAC at 3 amp.
Figure 3 LT460 to Liebert environmental units
Figure 4 LT460 to Liebert contact monitor panel
Liebert Deluxe Sys/3,
Challenger, Himod or
MM2 (8 Ton)
24
(24V)
51
LT460
TB2
TB2-2
(C)
TB2-1
(N.O.)
TB2-3
(N.C.)
Env. Unit
Liebert MM2 (1 to 5 Ton)
TB1-1
(24V)
TB1-2
LT460
TB2
TB2-2
(C)
TB2-1
(N.O.)
TB2-3
(N.C.)
Env. Unit
OR
TB2
TB2-2
(C)
TB2-1
(N.O.)
TB2-3
(N.C.)
Env. Unit
TB1-1
(24V)
TB1-3
Liebert MM2 (1 to 5 Ton)LT460
TB2-3 (N.C.)
TB2
Liebert DSLT460
TB2-2 (C)
TB2-1 (N.O.)
Environmental
unit
24 (24V)
50, 51, 55 or 56
TB2-3 (N.C.)
TB2
Liebert Deluxe System/3,
Challenger, Himod or
Mini-Mate2 (8 ton)
LT460
TB2
Liebert Mini-Mate2
(1 to 5 ton)
LT460
TB2-2 (C)
TB2-1 (N.O.)
TB2-3 (N.C.)
TB2-2 (C)
TB2-1 (N.O.)
Environmental
unit
Environmental
unit
24 (24V)
51, 55 or 56
TB1-1 (24V)
TB1-2 or TB1-3
TB2
TB2-2
(C)
TB2-1
(N.O.)
TB2-3
(N.C.)
LT460
Liebert Contact
Monitor Panel
Input
Contact
(N.O.)
Alarm Panel
TB2-3 (N.C.)
TB2-2 (C)
TB2-1 (N.O.)
TB2
LT460
Alarm panel
Liebert contact
monitor panel
Input
contact
(N.O.)