Vertiv Liebert CW - Page 57

REV : 0
REV DATE : 11/18
DPN004864
Page :2 /3
CW305, 375, 415 DOWNFLOW MODELS
Form No.: DPN001040_REV4
ELECTRICAL FIELD CONNECTIONS
LIEBERT CW
OPTIONAL ELECTRICAL CONNECTIONS
9. Condensate alarm (with condensate pump option) - On pump high 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.
10. 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
11. Reverse Starter contacts - Normally open dry contact is closed across terminals 102 & 103 for power
supply 1 and 106 & 107 for power supply 2 to indicate the active power feed. 1 AMP, 24VAC max load.
Use Class 1 field supplied wiring.
12. 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.
13. Analog inputs- Terminals 41, 42, 43, and 44 are user configurable for 0-10V, 0-5V, or 4-20MA.
OPTIONAL LOW VOLTAGE TERMINAL PACKAGE CONNECTIONS
14. 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.
15. 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.
16. Main fan enabled contact - On VFD enable, normally open dry contact is closed across terminals 84 & 85
for remote indication. 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.
17. LiquiTect shutdown and dry contact - On LiquiTect 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
18. Unit-to-Unit – Plug 64 is reserved for U2U communication
19. 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.