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4. See the Economizer Options section on this page for ad-
ditional economizer option configurations.
5. See the Exhaust Options section on this page for addition-
al exhaust option configurations.
Multi-Stage Constant Volume Units with
Space Sensor —
To configure the unit, perform the
following:
1. Under
Configuration
→
UNIT
→
C.TYP
, set
C.TYP
to 5
(SPT MULTI).
2. Install jumpers between R-W2 and W2-W1.
3. Under the
Setpoints
menu, the following configurations
should be set:
4. Under the
Setpoints
submenu, the heating and cooling set
points must be configured:
5. Under
Configuration
→
UNIT
→
SENS
→
SPT.S
, enable
the space sensor by setting
SPT.S
to ENBL.
6. Under
Configuration
→
UNIT
→
CV.FN
, set
CV.FN
to 1
for continuous fan or 0 for automatic fan.
7. To program time schedules, set
SCH.N
=1 under
Config-
uration
→
CCN
→
SC.OV
→
SCH.N
to configure the con-
trol to use local schedules.
8. Under the
Timeclock
→
SCH.L
submenu, enter the de-
sired schedule. See Time Clock section for further
descriptions of these configurations.
9. See the Economizer Options section below for addition
economizer option configurations.
10. See the Exhaust Options section below for addition
exhaust option configurations.
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
following points in
Configuration
→
ECON
→
CFM.C
need to
be set.
If equipped with an outdoor flow station, make sure
Configuration
→
ECON
→
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,
Configuration
→
ECON
→
O.C.MX
supersedes
Configura-
tion
→
ECON
→
EC.MN
.
Indoor Air Quality Options
DEMAND CONTROL VENTILATION — Under
Configu-
ration
→
IAQ
→
DCV.C
, the following configuration parame-
ters should be set to establish the minimum and maximum
points for outdoor air damper position during demand control
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
absolute 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 air flow 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 air flow 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
*Single VFD controlling both fan motors.
†Single VFD controlling one fan motor and staging the second fan
motor.
Configuration
→
BP
→
BF.CF
=1
(Two-Stage Exhaust
Option) — For two-stage exhaust, under the
Configuration-
→
BP
submenu, configure the following:
SA.HI
Supply Air Set Point Hi
SA.LO
Supply Air Set Point Lo
OHSP
Occupied Heat Setpoint
OCSP
Occupied Cool Setpoint
UHSP
Unoccupied Heat Setpoint
UCSP
Unoccupied Cool Setpoint
GAP
Heat-Cool Setpoint Gap
D.LV.T
Cool/Heat Set Point Offsets
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
Constant
Volume
2-Stage
Modulating
Power
Exhaust
S.O.
VFD*
High-
Capacity
Power
Exhaust†
Return
Exhaust†
48ZG
50ZG,Z2
X
X
S.O.
NA
NA
48ZN
50ZN,Z3
NA
X
S.O.
NA
NA
48ZT,ZW
50ZT,ZW,ZX,ZZ
NA
NA
NA
STD
NA
48Z6,Z8
50Z6,Z7,Z8,Z9
NA
NA
NA
NA
STD
X
—
Available as Factory Option
S.O. —
Available as Special Order
NA
—
Not Available on this Unit
STD —
Standard Feature on this Unit
BP.P1
Power Exhaust On Setp.1
BP.P2
Power Exhaust On Setp.2
Summary of Contents for WEATHERMASTER 48Z030
Page 103: ...103 Fig 15 Typical Power Schematic Sizes 030 050 Shown a48 8408 ...
Page 104: ...104 Fig 16 Main Base Board Input Output Connections a48 8409 ...
Page 105: ...105 Fig 17 RCB ECB CEM SCB Input Output Connections a48 8410 ...
Page 106: ...106 Fig 18 Typical Gas Heat Unit Control Wiring 48Z055 105 Units Shown a48 8411 ...
Page 107: ...107 Fig 19 Typical Electric Heat Unit Control Wiring 50Z055 105 Units Shown a50 8248 ...
Page 108: ...108 Fig 20 Typical Power Wiring 115 V 48Z Units a48 8412 ...
Page 109: ...109 Fig 21 Typical Power Wiring 115 V 50Z Units a50 8249 ...
Page 110: ...110 Fig 22 Typical Gas Heat Section Size 055 105 Units Shown a48 8413 ...
Page 111: ...111 Fig 23 Component Arrangement Size 030 050 Units ...
Page 112: ...112 Fig 24 Component Arrangement Size 055 070 Units ...
Page 113: ...113 Fig 25 Component Arrangement Size 075 105 Units ...