28
0
6/16 - Subject to change. © Belimo Air
controls
(USA
), Inc
.
Menu Item
Parameter
Default
Range
Notes
Vent Min Pos
1
Vent Min Pos
_ _%
0-100%
Setting the minimum position required for Economizer Operation.
This is where the outdoor damper minimum position is set. This is the position that
the damper will travel to during occupied periods (when terminal G on economizer is
powered). The amount of outdoor air is different per application. Please consult local
ventilation codes. This setting is typically related to a calculation that determines
amount of fresh air for building area and people (Vbz = Ventilation Breathing Zone
per ASHRE 62.1). Actual airflow at a given position should be verified by field
measurement.
DCV Min Pos
4
DCV Min Pos
_ _%
0% - Vent Min Pos %
This is the Demand Control Ventilation minimum position. The DCV min pos is a value
always less than the design ventilation position. This is the position that the damper
will travel to during occupied periods (when terminal G on economizer is powered)
when the measure CO2 Value is below the DCV PPM Set Pnt. The amount of outdoor
air is different per application. Please consult local ventilation codes. This setting
is typically related to a calculation that determines amount of fresh air for building
area (Ra = outdoor airflow rate required per unit area per ASHRE 62.1) to allow
continue flushing of VOCs during occupied periods. Actual airflow at a given position
should be verified by field measurement.
DCV PPM Set
Pnt
4
DCV PPM Set Pnt
_ _ppm
500 - 2000 ppm
This is the CO2 concentration that is desired to maintain in the space. When the CO2
sensor measures a concentration below this value, the damper control point will be
reset and the damper will modulate towards DCV Min Pos. When the measured CO2
level increases above this value, the damper will start to modulate towards the Vent
Min Pos to lower the CO2 in the space.
2 Speed Fan
Op
2 Speed Fan
Operation
Off
On
Off
If the unit is factory installed with 2 speed fan capability, then this setting must be set
to On to provide proper ventilation.
Low Sp Vent
Min
6
Low Sp Vent Min
_ _%
"Vent Min Pos" % -
100%
When a 2 Speed strategy is used to save energy, an additional Vent Min Pos needs
to be entered for low speed operation due to less available static pressure from
the fan. This position will be greater than Vent Min Pos, however equal the same
measured airflow
rate value.
Low Sp DCV
Min
6
Low Sp DCV Min
_ _%
"DCV Min Pos" % -
"Low Sp Vent Min" %
When a 2 Speed strategy is used to save energy, an additional DCV Min Pos needs
to be entered for low speed operation due to less available static pressure from
the fan. This position will be greater than DCV Min Pos, however equal the same
measured airflow rate value.
Exh Fan On
Pos
4
Exh Fan On Pos
_ _%
0 - 100%
This is where the desired enable point for exhaust fan operation is set. As the
outdoor damper increases or decrease past this position, the exhaust fan will be
turned on or off.
Low Exh Fan
Pos
6
Low Exh Fan Pos
_ _%
0 - 100%
When a 2 Speed strategy is used to save energy, an additional Exh Fan On Pos needs
to be entered for low speed operation due to less available static pressure from
the fan. This position will be greater than Exh Fan On Pos, however equal the same
measured space pressure.
Temp Unit
Temp Unit
°F
°F, °C
Allows the user to select Fahrenheit or Celsius temperature display. When the ZIP
Economizer is set up with a Canadian Postal Code, the units are default to °C.
Purge Enable
4
Purge Control
Off
On, Off
This is where Pre-Occupancy purge control is enabled. Pre-Occupancy purge is a
requirement in some codes to ventilate the building just prior to normal occupancy
times. The function removes VOCs that have gathered in the building during
unoccupied period when the Outside air damper is normally closed. Purge Control
requires using the expansion energy module and a thermostat or other time driven
control that will enable supply fan and provide 24V to Aux 1 during the desired purge
period. Setting of “Purge Dmp Set” is required for the function to work.
Purge Dmp
Set
4
Purge Dmp Set
_ _%
0% - "Vent Min Pos" %
This determines the position that the damper will open to during Pre-Occupancy
purge. This position is usually based what will achieve the desired number of air
changes.
Remote Dmp
Cntrl
4
Remote Dmp
Cntrl
Off
On, Off
This is where an optional outdoor air damper position override can be enabled. Input
into AUX2 is 2-10 VDC (2V damper closed - 10V 100% open). This function overrides
all other damper position settings Except: not in Automatic, G not energized FP.
ZIP Economizer
Menu Structure Tables
