Vertiv Liebert CW 038, Инструкция по установке и эксплуатации

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DOWNFLOW CW146 & CW181 MODELS W/ EC FANS
ELECTRICAL FIELD CONNECTIONS DEFINITIONS & LOCATIONS
LIEBERT CW
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40
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REV : 1
REV DATE : 12/18
DPN004550
Page :1 /3
STANDARD ELECTRICAL CONNECTIONS
1)
Primary high voltage entrance - 2.50” (64mm); 1.75” (44mm); 1.375” (35mm) diameter concentric knockouts located in bottom
of box.
2) Primary low voltage entrance - Quantity (3) 1.125” (28mm) diameter knockouts located in bottom of box.
3)
Three phase electrical service - Terminals are on main fuse block (disregard if unit has optional disconnect switch). Three phase
service not by Liebert.
4)
Earth ground - Terminal for field supplied earth grounding wire.
5)
Remote unit shutdown - Replace existing jumper between terminals 37 & 38 with field supplied normally closed switch having a
minimum 75VA, 24VAC rating. Use field supplied Class 1 wiring.
6) Customer alarm inputs - Terminals for field supplied, normally open contacts, having a minimum 75VA, 24VAC rating, between
terminals 24 & 50, 51, 55, 56. Use field supplied Class 1 wiring. Terminal availability varies by unit options.
7) Common alarm - On any alarm, normally open dry contact is closed across terminals 75 & 76 for remote indication. 1 AMP, 24VAC
max load. Use Class 1 field supplied wiring.
8) Unit factory installed disconnect switch, Fuse Block and Main Fuses – Type of disconnect switch available – “Locking”. The
“Locking Type” consists of a non-automatic molded case switch operational from the outside of the unit. Access to the high
voltage electric panel compartment can be obtained only with the switch in the “off” position. The molded case switch disconnect
models contain separate main fuses. Units with fused disconnect have main fuses within the disconnect.
OPTIONAL ELECTRICAL CONNECTIONS
9) Secondary disconnect switch and earth ground – Fuses are included in the 65KAIC SCCR fused disconnect switch models.
10)
Three phase electrical service - Terminals are on top of disconnect switch. Three phase service not by Liebert.
11)
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.
12)
Reheat and humidifier lockout - Remote 24VAC required at terminals 82 & 83 for lockout of reheat and humidifier.
13) 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.
14)
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.
15)
Reversing Starter Power Supply Notification – Normally open contact terminals 106 and 107 will close when Power Supply 1 is
engaged; 110 and 111 will close when Power Supply 2 is engaged.
OPTIONAL LOW VOLTAGE TERMINAL PACKAGE CONNECTIONS
16) 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.
17) 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.
18)
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.
19)
Liqui-Tect shutdown and dry contact - On Liqui-Tect activation, normally open dry contact is closed across terminals 58 & 59 for
remote indication (Liqui-Tect sensor ordered separately). 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.
OPTIONAL COMMUNCATION CONNECTIONS
20) Unit-To-Unit - Plug 64 is reserved for U2U communication .
21) 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.