C6.1.7/1110-0519/E
5
2.7 Main components description
2.7.1 Compressor
Single-compressor unit
Tandem-compressor unit
Unit model
Compressor model
Unit model
Compressor models
HLR13-ZBD30KCE
ZBD30KCE
HLR31-ZBDT60KCE
ZB ZB30KCE
HLR13-ZBD45KCE
ZBD45KCE
HLR31-ZBDT90KCE
ZB ZB45KCE
HLR13-ZBD58KCE
ZBD58KCE
HLR31-ZBDT116KCE
ZB ZB58KCE
HLR13-ZBD58KCE
ZBD76KCE
HLR31-ZBDT152KCE
ZB ZB76KCE
Table 2: Compressors used in HLR Digital Receiver unit
2.7.2 Liquid receiver
The HLR Digital Receiver units are equipped with a liquid receiver with:
▪
Rotalock service valve on top of the receiver for liquid outlet line;
▪
3/8"
–14 NPTF connection for relief valve.
Fitting a pressure relief device according to standard EN 378-2 is the responsibility of the installer.
Unit model
Receiver volume
[Litres]
HLR13-ZBD30KCE, HLR13-ZBD45KCE,
HLR13-ZBD58KCE, HLR13-ZBD760KCE
13
HLR31-ZBDT60KCE, HLR31-ZBDT90KCE,
HLR31-ZBDT116KCE, HLR31-ZBDT152KCE
31
Table 3: Receiver volume
It is recommended to charge the system with refrigerant via the Rotalock service valves.
2.7.3 Electrical box components
All electrical components are pre-wired into the panel. The panel contains:
▪
compressor contactor(s)
▪
fuse(s)
▪
terminal blocks
▪
DIN rail-mounted terminals
▪
alarm relays
▪
electronic controller
NOTE: For further information, please refer to Application Guidelines C6.1.3 "
Condensing
Unit
Controller
for
Copeland
EazyCool
™
Outdoor
Condensing
Units"
available on
2.7.4 Pressure switch
Single-compressor
units are equipped with:
▪
Dual pressure switch with automatic reset Alco Controls PS2-W7A
▪
Electronic unit controller EC2-552 with HP and LP pressure transmitters
Tandem-compressor
units are equipped with:
▪
Single low-pressure switch with automatic reset Alco Controls PS1-W3A
▪
Two high-pressure switches with automatic reset Alco Controls PS3-W4S
▪
Electronic unit controller EC2-552 with HP and LP pressure transmitters
1)
Alco Controls PS2-W7A (Dual pressure switch with automatic reset for single-
compressor unit)
The switch is equipped with display scale and pointers to
indicate the approximate settings. The display scales are
printed in relative pressure units "bar" and "psi".