Ventilation; Warm-Up Purge - York eco2 050 Installation Operation & Maintenance

Parameter Description and Options

VENTILATION

OA Flow Cntrl Enable
This setting tells the control that the unit is equipped
with outside airß ow measuring equipment and that
the outside air damper should be actively controlled
to a measured airß ow.
Comfort Vent Mode
Comfort Ventilation operation will be carried out when
the Comfort Ventilation Mode is enabled (used with
Constant Volume units only).
Cmfrt Vent Max Dampr
This is the maximum Economizer damper position the
control will use for Comfort Ventilation (used with
Constant Volume units only).
IAQ Sensor Enable
When set to ON, this parameter tells the control that an
IAQ Sensor is to be used for control of the Economizer
(outside air damper). The control will use the Demand
Ventilation Setpoint to control the IAQ levels in the
build ing by modulating the Economizer. The IAQ
Sensor will normally be Þ eld installed.
IAQ Sensor Span
This tells the control what the full range (span) is for
the installed IAQ Sensor. The IAQ Sensor is gener-
ally expected to be a CO
2
Sen sors may be used.
DV Multiplier
This tells the control what the Maximum Demand Ven-
ti la tion Multiplier (DVM) is. The Maximum DVM is a
multiplier limit that the control will not exceed when
resetting (overriding) the outside air damper or AMS
(Air Measuring Station) setpoints.
Altitude
The value entered into Altitude is the altitude of the
unit above sea level. This value is used only when
an Air Measurement Station is installed and Outdoor
Airß ow Control is enabled. The altitude value is to be
entered within 1000 feet of actual.
106
sensor. Other types of IAQ

WARM-UP PURGE

Morning Warm-Up
When this option is turned ON, the Morning Warm Up
feature is enabled and can be started. Morning Warm
up is an option in Networked (BAS) applications or
in ter nal ly scheduled applications.
• With a Networked application, Morn ing Warm
Up will be initialized by an appropriate net work
com mand.
• Morning Warm Up Enable must be turned
ON.
• Internal Time Clock/Scheduling must be
turned OFF.
• Morning Warm Up Enable must be turned ON.
• Internal Time Clock/Scheduling must be turned
ON.
Max Warm-Up Time
This is the maximum time the control will conduct
Morn ing Warm Up. This is used in conjunction with
a BAS control system input.
Pre-Occupancy Purge
When this option is enabled, the Control will start
Purge per the Pre-Occupancy Purge Schedule. On the
start of the Purge, the control will, at the time Pre-Oc-
cu pan cy Purge is scheduled, the controller will com-
pare the OAT to the High and Low purge limits. When
en abled, Pre-Occupancy Purge will be performed per
the daily Pre-Occupancy Purge schedule.
If the OAT is between the limits:
• The Supply Fan will be turned ON to 100%.
• The Economizer will be open to 100% out door
air (0% return air).
If the OAT is outside of the limits, operation will
con tin ue in the unoccupied mode (no purge will be
done).
Pre-Occupancy Purge will terminate:
• At the shut off time of the Pre-Oc cu pan cy Purge
Schedule.
• When occupancy is detected.
FORM 100.50-NOM1 (604)
YORK INTERNATIONAL