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
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.
Alarm file — This file maintains the last 25
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 —
Model number nomenclature
23XRV – High Efficiency
Variable Speed Screw Chiller
Cooler Size*
Condenser Size*
Economizer Option
E – With Economizer
N – No Economizer
R – Compressor
S– Special
Not Used
Voltage Code
3–
4–
5–
9–
Drive | Amps | Amps |
Code | In† | Out† |
AA | 440 | 442 |
BA | 520 | 442 |
BB | 520 | 520 |
CC | 608 | 608 |
Motor Code |
| |
P | T |
|
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,
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