Carrier 23XRV manual Model number nomenclature, A23-1648

Features/Benefits (cont)

feature also allows the machine to operate at reduced capacity, rather than shut down, when key safety limits are approached.

Chilled liquid reset — Reset can be accomplished manually or automatical- ly from the building management sys- tem. For a given capacity, reset allows operation at slower compressor speeds, saving energy when warmer chilled liquid can be used.

Demand limiting — This feature lim- its the power draw of the chiller during peak loading conditions. When incor- porated into the Carrier Comfort Network® building automation system, a red line command holds chillers at their present capacity and prevents any other chillers from starting. If a load shed signal is received, the compres- sors are unloaded to avoid demand charges whenever possible.

Ramp loading — Ramp loading en- sures smooth pulldown of liquid loop temperature and prevents a rapid increase in compressor power con- sumption during the pulldown period.

Automated controls test — The test can be executed prior to start-up to verify that the entire control system is functioning properly.

365-day real time clock — This feature allows the operator to program a yearly schedule for each week, week- ends, and holidays.

Occupancy schedules — Schedules can be programmed into the controller to ensure that the chiller operates when cooling is required and remains off when not needed by the tenants or process.

Extensive service menu — Unau- thorized access to the service menu

can be prevented through password protection. Built-in diagnostic capabili- ties assist in troubleshooting and rec- ommend proper corrective action for preset alarms, resulting in greater working time.

Alarm file — This file maintains the last 25 time-and date-stamped alarm messages in memory. This function re- duces troubleshooting time and cost.

Alert file — This file maintains the last 25 alert messages in memory. This function provides prognostic informa- tion and corrective actions that can avoid unit shutdown.

Configuration data backup — Non-volatile memory provides protection during power failures and eliminates time consuming control reconfiguration.

Model number nomenclature

23XRV – High Efficiency

Variable Speed Screw Chiller

Cooler Size* 30-32 35-37 40-42 45-47 50-52 55-57

Condenser Size* 30-32 35-37 40-42 45-47 50-52 55-57

Economizer Option

E – With Economizer

N – No Economizer

R – Compressor

S– Special

Not Used

Voltage Code

3– 380-3-60

4– 416-3-60

5– 460-3-60

9– 380/415-3-50

Drive	Amps	Amps
Code	In†	Out†
AA	440	442
BA	520	442
BB	520	520
CC	608	608

Motor Code
P	T	a23-1648
Q	U

RV

S

*First number denotes frame size.

†Maximum limits only. Additional application limits apply that may reduce these ampacities.

Quality Assurance

Certified to ISO 9001:2000

ASME	AHRI (Air Conditioning, Heating
‘U’ Stamp	and Refrigeration Institute)
	Performance Certified

SEISMICOMPLIANT*

* Meets IBC 2006, ASCE-7-05, CBC 2007, and OSHPD seismic requirements.

4