Safety
Instructions
Product
Description
Installat
io
n
Electrical
Connection
Starting up &
Operation
Maintenance
& Repair
Dismantling &
Disposal
Condensing Unit For Refrigeration Networks
2.6.4 Liquid receiver
Liquid receiver for 2 unit network system
Master and Slave units for 2-unit network configuration
are equipped with a liquid
receiver.
The liquid receivers are equipped with:
Rotalock service valves for connection of a liquid level equalisation line as well as
a gas pressure equalisation line between the receivers to ensure equal liquid
levels in both receivers. Both lines are partly pre-installed and protrude at the rear
of the units.
Rotalock service valve on top of the receiver for liquid outlet line.
3/8’’–14 NPTF connection for relief valve. Maximum allowable working pressure -
MAWP 33 Bar
Fitting a pressure relief device according to standard EN378-2 is the responsibility of the
installer.
Rotalock service valve
Receiver
volume
l
OMQ-56-Nxx to OMQ-110-Nxx
OLQ-24V-Nxx to OLQ-48V-Nxx
OMTQ-60-Nxx to OMTQ-90-Nxx
OLTQ-26V-Nxx to OLTQ-36V-Nxx
Model Type
24
Table 4:
Receiver volume
It is recommended to charge the system with refrigerant via the Rotalock service valves.
Liquid receiver for 3 and 4 unit network system
With larger systems (refrigeration systems requiring 3 or 4 units in a network) a remote
liquid receiver should be used. The condensing unit models for systems with remote
receivers are provided without liquid receiver. The condenser liquid outlet line protrudes
from the rear of the unit to allow an easy connection to a remote liquid receiver.
Copeland offers a LRU (Liquid Receiver Unit), which contains a 90 litres liquid receiver
for remote use with filter drier, sight glass with moisture indicator and ball valves for liquid
inlet and outlet. If a larger receiver is required, this should be obtained from a third party.
C6.1.4/0305/E
7
Part no: 3136433
