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Refrigerant, Hydraulic and Electrical Connections
Liebert CRV - PD - 265086 - 11.01.2018
9.1 DX electrical field connections descriptions - 50 Hz
STANDARD ELECTRICAL CONNECTIONS
1.
Primary high voltage entrance
Quantity (2) 28mm diameter concentric knockouts located in bot
-
tom of box
2.
Secondary high voltage entrance
Quantity (2) 35mm diameter concentric knockouts located in
top of box
3.
Primary low voltage entrance
Quantity (1) 18mm diameter knockouts located in bottom of unit
4.
Secondary low voltage entrance
“ Quantity (2) 22mm diameter knockouts located in top of box
5. Earth ground
- Terminal for field supplied earth grounding wire.
6.
Remote unit shutdown
- Replace existing jumper between terminals 52 & 53 with field supplied
normally closed switch having a minimum 75VA, 24VAC rating. Use field supplied Class 1 wiring.
7.
Customer alarm inputs
- Terminals for field supplied, normally closed contacts, having a minimum
75VA, 24VAC rating, between terminals 61 & 63. Use field supplied Class 1 wiring.
8.
General alarm
- On any alarm, normally open dry contact is closed across terminals 400,401 for
remote indication. 2 AMP, 24VAC max load. Use Class 1 field supplied wiring.
9.
Warning alarm
- On any alarm, normally open dry contact is closed across terminals 300,301 for
remote indication. 2 AMP, 24VAC max load. Use Class 1 field supplied wiring.
10.
Compressor motor on
- On any call for compressor operation, normally open dry contact is
closed across terminals 72 & 73,2 AMP, 24VAC max load. Use Class 1 field supplied wiring.
11.
Fan motor on
- On any call for fans operation, normally open dry contact is closed across termi-
nals 70 & 71. 2 AMP, 24VAC max load. Use Class 1 field supplied wiring.
OPTIONAL ELECTRICAL CONNECTIONS
12.
Smoke sensor alarm
(with smoke sensor option)- The smoke sensor is factory installed ,and
senses the delivery air;it is connected across terminals 61-62 and send a visual and an audible
alarm.
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 sup
-
plied wiring.
13.
Condensate alarm
(with condensate pump option) - On pump high water indication, normally
open dry contact is closed across purple wire for remote indication install inside the box near the
pump. 1 AMP, 24VAC max load. Use Class 1 field supplied wiring.
OPTIONAL LOW VOLTAGE TERMINAL PACKAGE CONNECTIONS
14.
Flooding alarm
(liquistat) - The flooding alarm detects the presence of water and activate an
alarm. The sensor is connect across terminals 105 & 106 and up to 5 sensors can be connected to
the same flooding alarm device,to control many points in the bottom of the unit.
Summary of Contents for Liebert CRV 300 CW
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