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Economizer Options
Under the Configuration
points should be configured:
EC.EN
Economizer Enabled?
EC2.E
Econ Act.2 Installed?
EC.MN
Economizer Min.Position
EC.MX
Economizer Maximum Position
EP.MS
Economizer Position at Min VFD
EP.XS
Economizer Position at Max VFD
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
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
OCF.S
Outdoor Air CFM Sensor
O.C.MX
Economizer Minimum Flow
O.C.DB
Economizer Minimum Flow Deadband
If equipped with an outdoor flow station, make sure Configu-
ration
ECON
CFM.C
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
tion
ECON
EC.MN. For VAV control while practicing
dual setpoint usage, Configuration ECON EP.MS and EP.XS
are needed to set up the dual minimum damper positions. The
controller would enforce EP.MS * EP.XS.
Indoor Air Quality Options
DEMAND-CONTROLLED VENTILATION
Under Configuration
IAQ
tion parameters should be set to establish the minimum and maxi-
mum points for outdoor air damper position during demand-con-
trolled 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
lute minimum vent position (or maximum reset) under DCV.
Configuration
IAQ
DCV.C
mum damper position (or with no DCV reset). This is also refer-
enced in the economizer section.
Configuration
IAQ
DCV.C
outdoor airflow station and will supersede Configuration
IAQ
DCV.C
EC.MN as long as the outdoor air cfm sensor is
valid.
Configuration
IAQ
DCV.C
outdoor airflow station and will supersede Configuration
IAQ
DCV.C
IAQ.M as long as the outdoor air cfm sensor is
valid.
ECON submenu, the following set
ECON
CFM.C need to be set.
OCF.S is enabled. If an outdoor
O.C.MX supersedes Configura-
DCV.C, the following configura-
IAQ.M is used to set the abso-
EC.MN is used to set the mini-
O.C.MX is used only with the
O.C.MN is used only with the
Exhaust Options
The following exhaust options should be configured.
UNIT
48/50P2,P3,P6,P7
48/50P4,P5,P8,P9
NOTE(S):
a. Sizes 075-100 only.
LEGEND
PE
—
Power Exhaust
X
—
Available as Factory Option
Configuration
BP
For two-stage exhaust, under the Configuration
configure the following:
BP.P1
Power Exhaust On Setp.1
BP.P2
Power Exhaust On Setp.2
Configuration
BP
with Two Actuators Option)
For modulating exhaust, the Configuration
figure the following:
BP.SP
Building Pressure Set point
BP.SO
BP Set point Offset
Under Configuration
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
Under Configuration
adjusted:
BP.SP
Building Pressure Set point
BP.SO
BP Set point Offset
Under Configuration
may be adjusted:
BP.FS
VFD/Act. Fire Speed
BP.MN
VFD/Act. Min. Speed
BP.MX
VFD Maximum Speed
Configuration
BP
Exhaust)
Under Configuration
adjusted:
BP.SP
Building Pressure Set point
BP.SO
BP Set point Offset
Under Configuration
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.
36
EXHAUST TYPE
High-
Modulating
VFD
Capacity
Power
PE
Power
Exhaust
Exhaust
X
X
X
a
X
X
X
a
BF.CF=1 (Two-Stage Exhaust Option)
BF.CF=2 (Modulating Power Exhaust
BP submenu, con-
BP
B.V.A, the following configurations
BP.CF=3 (VFD Power Exhaust Option)
BP, the following configurations may be
BP
B.V.A, the following configurations
BP.CF=4 (High-Capacity VFD Power
BP, the following configuration may be
BP
B.V.A, the following configurations
Return
Exhaust
X
X
BP submenu,
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Troubleshooting
