Vertiv Liebert DSE - Page 128

REV : 1
REV DATE : 6/18
DPN004387
Page :2 /3
50kW - 85kW UPFLOW AND DOWNFLOW MODELS
Form No.: DPN001040_REV4
ELECTRICAL FIELD CONNECTION DESCRIPTION
LIEBERT DSE
OPTIONAL ELECTRICAL CONNECTIONS
16) Smoke sensor alarm - Factory wired dry contacts from smoke sensor are 91-common, 92-NO, and 93-NC. Supervised contacts, 80 &
81, open on sensor trouble indication. This smoke sensor is not intended to function as, or replace, any room smoke detection
system that
may be required by local or national codes. 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.
17) Reheat and humidifier lockout - Remote 24VAC required at terminals 82 & 83 for lockout of reheat and humidifier.
18) Condensate alarm (with condensate pump option) - On pump hi
gh water indication, normally open dry contact is closed across terminals
88 & 89 for remote indication. 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.
19) Remote humidifier - On any call for humidification, normally open dry contact is closed across terminals 11 & 12 to signal field supplied
remote humidifier. 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.
20) Analog Inputs- Terminals 41, 42, 43, 44 are user configurable for 0-10V, 0-5V, or 4-20MA.
OPTIONAL LOW VOLTAGE TERMINAL PACKAGE CONNECTIONS
21) Remote unit shutdown - Two additional contact pairs available for unit shutdown (labeled as 37B & 38B, 37C & 38C). Replace jumpers
with field supplied normally closed switch having a minimum 75VA, 24VAC rating. Use field supplied Class 1 wiring.
22) Common alarm - On any alarm, two additional normally open dry contacts are closed across terminals 94 & 95 and 96 & 97 for remote
indication. 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.
23) Main fan auxiliary switch - On closure of main fan contactor, normally open dry contact is closed across terminals 84 & 85 for remote
indication. 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.
24) Liqui-Tect shutdown and dry contact - On Liqui-Tect activation, normally open dry contact is closed across terminals 58 & 59 for
remote indication (LiquiTect sensor ordered separately). 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.
OPTIONAL COMMUNICATION CONNECTIONS.
25) Unit-To-Unit – Plug 64 is reserved for U2U communication.
26) Site and BMS - Plug 74 and terminal block 3 are reserved for Site and BMS connections. Plug 74 is an eight pin RJ45 for a Cat 5 cable.
Terminal block 3 is a two position screw terminal block for use with twisted pair wires.
NOTE: Refer to specification sheet for total unit full load amps, wire size amps, and max overcurrent protective device size.