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Economizer Options
Under the Configuration
ECON submenu, the following set
points should be configured:
Configuration
ECON
EC.MN should always be set for the
minimum damper position.
If the unit is equipped with an outdoor air flow station, the follow-
ing points in Configuration
ECON
CFM.C need to be set.
If equipped with an outdoor flow station, make sure Configu-
ration
ECON
CFM.C
OCF.S is enabled. If an outdoor
air cfm station is used, then the economizer will control to cfm,
not a position, as long as the sensor is valid. Therefore, Config-
uration
ECON
CFM.C
O.C.MX supersedes Configura-
tion
ECON
EC.MN.
Indoor Air Quality Options
DEMAND-CONTROLLED VENTILATION
Under Configuration
IAQ
DCV.C, the following configu-
ration parameters should be set to establish the minimum and
maximum points for outdoor air damper position during de-
mand-controlled ventilation (DCV):
EC.MN Economizer Min.Position
IAQ.M IAQ Demand Vent Min.Pos.
O.C.MX Economizer Min.Flow
O.C.MN IAQ Demand Vent Min.Flow
Configuration
IAQ
DCV.C
IAQ.M is used to set the ab-
solute minimum vent position (or maximum reset) under DCV.
Configuration
IAQ
DCV.C
EC.MN is used to set the
minimum damper position (or with no DCV reset). This is also
referenced in the economizer section.
Configuration
IAQ
DCV.C
O.C.MX is used only with
the outdoor airflow station and will supersede Configura-
tion
IAQ
DCV.C
EC.MN as long as the outdoor air cfm
sensor is valid.
Configuration
IAQ
DCV.C
O.C.MN is used only with
the outdoor airflow station and will supersede Configura-
tion
IAQ
DCV.C
IAQ.M as long as the outdoor air cfm
sensor is valid.
Exhaust Options
The following exhaust options should be configured.
LEGEND
*Sizes 075-100 only.
Configuration
BP
BF.CF=1 (Two-Stage Exhaust Option)
For two-stage exhaust, under the Configuration
BP sub-
menu, configure the following:
Configuration
BP
BF.CF=2 (Modulating Power Exhaust
with Two Actuators Option)
For modulating exhaust, the Configuration
BP submenu,
configure the following:
Under Configuration
BP
B.V.A, the following configura-
tions may be adjusted:
BP.FS VFD/Act. Fire Speed
BP.MN VFD/Act. Min. Speed
BP.1M BP 1 Actuator Max
BP.2M BP 2 Actuator Max
Configuration
BP
BP.CF=3 (VFD Power Exhaust Option
Under Configuration
BP, the following configurations may
be adjusted:
Under Configuration
BP
B.V.A, the following configura-
tions may be adjusted:
BP.FS VFD/Act. Fire Speed
BP.MN VFD/Act. Min. Speed
BP.MX VFD Maximum Speed
Configuration
BP
BP.CF=4 (High-Capacity VFD Power
Exhaust)
Under Configuration
BP, the following configuration may
be adjusted:
Under Configuration
BP
B.V.A the following configura-
tions may be adjusted:
BP.FS VFD/Act. Fire Speed
BP.MN VFD/Act. Min. Speed
BP.MX VFD Maximum Speed
BP.CL BP Hi Cap VFD Clamp Val.
EC.EN Economizer Enabled?
EC2.E Econ Act.2 Installed?
EC.MN Economizer Min.Position
EC.MX Economizer Maximum Position
E.TRM Economizer Trim for SumZ?
E.SEL Econ Changeover Select
OA.E.C OA Enthalpy Change Over Select
OA.EN Outdoor Enthalpy Compare Value
OAT.L High OAT Lockout Temp
O.DEW OA Dew Point Temp Limit
ORH.S Outside Air RH Sensor
OCF.S Outdoor Air CFM Sensor
O.C.MX Economizer Minimum Flow
O.C.DB Economizer Minimum Flow Deadband
UNIT
EXHAUST TYPE
Modulating
Power
Exhaust
VFD
PE
High-
Capacity
Power
Exhaust
Return
Exhaust
48/50P2,P3 X X X* X*
48/50P4,P5 XXX* NA
X—Available as Factory Option
NA — Not Available on this Unit
PE — Power Exhaust
BP.P1 Power Exhaust On Setp.1
BP.P2 Power Exhaust On Setp.2
BP.SP Building Pressure Set point
BP.SO BP Set point Offset
BP.SP Building Pressure Set point
BP.SO BP Set point Offset
BP.SP Building Pressure Set point
BP.SO BP Set point Offset
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