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Premium Commercial Controls
ERV
94
SYSTEM MONITORING
Depending upon whether dehumidification, heating, or cooling are enabled for the unit, and
depending upon which type is used, the screens here will vary.
11.5.1 Heating Screens
Each screen tells
u
Heating type in use
u
Control Variable (unit supply or return air)
u
Current Setpoint (or OA reset value)
u
Status of outputs for that heat type
u
Heating Status
11.5 TEMPERING SCREENS
The heating status values are shown. Multiple values may be true.
MESSAGE
MEANING
Heat Locked Out by OA
The heating OA lockout is higher than the OA temperature.
Unit OFF
Unit is off.
11.5.2 Cooling Screens
If in dehumidification, this screen will reflect the cooling used for dehumidification. Each
screen tells:
u
Control Variable (unit supply or return air for cooling, or coil LAT for dehumidification)
u
Current Setpoint
u
Status of outputs for that cooling type
u
Cooling Status
The cooling status values are shown. Multiple values may be true.
MESSAGE
MEANING
Cool Locked Out by OA
The cooling OA lockout is lower than the OA temperature.
Lockout Overlap
The OA lockouts for heating and cooling overlap. (No vent mode).
The heating takes preference.
Econ Only
If economizer is open less than 100%.
Econ Mode
If in economizer mode.
Unit OFF
Unit is off.
