1.800.627.4499
Premium Commercial Controls
ERV
42
The heating status can be monitored in the
Unit Status
. The screen shows:
u
Heating Control Variable which will be as selected if in occupied operation
u
Heating setpoint which will be:
u
Heating setpoint if selected adjust
u
Calculated OA reset heating setpoint if selected OA reset
u
Whether heating enable 1 is ON
u
Heating Status
TEMPERING CONTROL
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.
6.2.3.4 Two-Stage Heater
The mode is determined by the outdoor temperature and the heating lockout
temperature settings.
This type of heating cycles two stages of heating to maintain the heating setpoint. You must
set a prop band value. This value represents 100%; the wider the prop band the slower the
response. Then you specify the “on point” for stages one and two in percentages. Stage one
will turn off at setpoint and stage two will turn off at the on point for stage one. There is also a
minimum on and off time to prevent over-cycling.
The “Use Cool Outs” setting should be set to no for heater mode, where the output used for this
control will be the heating output NO1 on the expansion module.
