Trane BAYECON355 Series, Руководство по установке

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RT-SVN044A-EN 17
Enthalpy Settings
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When the outside air temperature, enthalpy, and dew
point are below the respective setpoints, the outdoor
air can be used for economizing. See
Figure 10, p. 17 .
N No otte e:: The controller calculates the enthalpy and dew
point using the outside air temperature and
humidity input from the outside air sensor.
1. There are 5 boundaries (setpoints ES1 through
ES5), which are defined by dry bulb temperature,
enthalpy and dew point. See
Table 9, p. 17 .
2. When conditions are below the selected boundary,
the economizer sets the economizing mode to YES
and economizing is available. When conditions are
above the selected boundary, the conditions are not
good to economize and the mode is set to NO.
N No otte e:: When using the enthalpy (Sylk Bus) sensors,
there will be a slight delay while the
controller and the sensor communicate.
Analog sensors do not communicate on the
Sylk Bus and output a 20k ohm signal to the
controller with an instantaneous response
time.
Table 9. Single enthalpy and dual enthalpy boundaries (parameters ES1 through ES5)
Enth.
Curve
Temp. dry
Bulb (ºF)
Temp. dew
point (ºF)
Enth. (btu/
lb/da)
Temp. ºF Humid. %RH Temp. ºF Humid.%RH
ES1 80 60 28 80 36.8 66.3 80.1
ES2 75 57 26 75 39.6 63.3 80
ES3 70 54 24 70 42.3 59.7 81.4
ES4 65 51 22 65 44.8 55.7 84.2
ES5 60 48 20 60 46.9 51.3 88.5
HL 86 66 32.4 86 38.9 72.4 80.3
Note: For differential enthalpy there is a high limit boundary. The high limit boundary is ES1 when there are no stages of mechanical cooling
energized and HL when a compressor stage is energized.
Figure 10. Single enthalpy curve and boundaries
N No otte e:: When the OA temperature, OA humidity, and the OA dew point are all below the selected boundary, the
economizer sets the economizing mode to YES (economizing is available).
Powered Exhaust
To configure the LLE controller, set EXH1 SET in the
SETPOINTS menu.
CO
2
Sensor
This optional sensor can be added for Demand Control
Ventilation (DCV) functionality. To configure the JADE
controller, set the following parameters:
SETPOINTS Menu:
DCV SET = desired CO
2
ppm to start DCV
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