Carrier WEATHERMASTER 48Z030, Operation And Service Manual

Page: 34 / 180

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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