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34
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
X
X
X*
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
Summary of Contents for Weathermaster 48P2030-100
Page 130: ...130 Fig 19 Typical Power Schematic Sizes 040 075 Shown ...
Page 131: ...131 Fig 20 Main Base Board Input Output Connections ...
Page 132: ...132 Fig 21 RXB EXB CEM SCB Input Output Connections ...
Page 133: ...133 Fig 22 Typical Gas Heat Unit Control Wiring 48P030 100 Units Shown ...
Page 134: ...134 Fig 23 Typical Electric Heat Wiring 50P030 100 Units Shown ...
Page 135: ...135 Fig 24 Typical Power Wiring 115 V ...
Page 136: ...136 Fig 25 Typical Gas Heat Section Size 030 050 Units Shown ...
Page 138: ...138 Fig 27 Component Arrangement Size 030 035 Units ...
Page 139: ...139 Fig 28 Component Arrangement Size 040 075 Units ...
Page 140: ...140 Fig 29 Component Arrangement Size 090 100 Units ...