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2.7
Main components description
2.7.1 Compressor
Single-compressor unit
Unit model
HLR13-ZBD30KCE
HLR13-ZBD45KCE
HLR13-ZBD58KCE
HLR13-ZBD58KCE
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
HLR13-ZBD30KCE, HLR13-ZBD45KCE,
HLR13-ZBD58KCE, HLR13-ZBD760KCE
HLR31-ZBDT60KCE, HLR31-ZBDT90KCE,
HLR31-ZBDT116KCE, HLR31-ZBDT152KCE
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 "
Unit
Controller
for
www.climate.emerson.com/en-gb.
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".
C6.1.7/1110-0519/E
Compressor model
ZBD30KCE
ZBD45KCE
ZBD58KCE
ZBD76KCE
™
Copeland
EazyCool
Tandem-compressor unit
Unit model
HLR31-ZBDT60KCE
HLR31-ZBDT90KCE
HLR31-ZBDT116KCE
HLR31-ZBDT152KCE
Receiver volume
[Litres]
13
31
Outdoor
Condensing
Compressor models
ZBD30KCE + ZB30KCE
ZBD45KCE + ZB45KCE
ZBD58KCE + ZB58KCE
ZBD76KCE + ZB76KCE
Condensing
available
Units"
on
5
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