Trane CSRA025FAF0, Установка, эксплуатация и обслуживание

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58 CSRA-SVX02A-EN
System Start-Up
Table 8c — Chilled Solution Reset Schedule based on Entering
Solution Temperature
Sequence of Operation
Lead/Lag (Standard)
When Lead-Lag is enabled, for each capacity add request, the CGM will
begin sequencing the compressors “On” that have:
A. the least number of starts; or,
B. the least run time (if number of starts are equal)
At each capacity subtract request, the CGM will begin sequencing the
compressors “Off” that have:
A. the most run time; or,
B. the least number of starts (if more than one compressor has the same run
time)
If a compressor is locked out for any reason when a capacity add request
occurs, the next available compressor which meets the specified criteria will
be started.
If a compressor can not be turned “Off” due to the minimum “On Time”, the
next compressor which meets the specified criteria will be turned “Off”.
On dual circuit units, as the first two capacity add requests are initiated, one
compressor on each circuit will start before any additional compressors on
any circuit is started. When staging down from three compressor stages to
two compressor stages, the CGM will turn a compressor “Off” on the circuit
that has the most compressors operating.
Active Leaving
Solution Setpoint
Reset
Amount = Maximum
LSS = ALSS + Maximum
Reset
Amount = Zero (0)
LSS = ALSS
Adjustable
Reset
3 - 16 F
End Temperature
Range 4 - 19
Factory Preset = 8
Start Temperature
Range 4 - 19
Factory Preset = 10
EST - LST
Temperature
Entering Solution Reset
Factory
Preset = 5