21
CONTROLS QUICK START
The following section will provide a quick user guide to setting
up and configuring the A Series units with
Comfort
Link con-
trols. See Basic Control Usage section on page 4 for informa-
tion on operating the control. For wiring information, refer to
unit wiring diagrams in the Major System Components section
on page 110.
VAV Units Using Return Air Sensor or Space
Temperature Sensor
To configure the unit, perform the following:
1. The type of control is configured under
Configuration
UNIT
C.TYP
. Set
C.TYP
to 1 (VAV-RAT) for return air
sensor. Set
C.TYP
to 2 (VAV-SPT) for space temperature
sensor.
NOTE: For VAV with a space sensor (VAV-SPT), under
Configu-
ration
UNIT
SENS
SPT.S
, enable the space sensor by
setting
SPT.S
to ENBL.
2. Install jumpers between R-W2 and W2-W1 on TB4 in the
control box.
3. The space temperature setpoints and the supply air setpoints
are configured under the Setpoints menu. The heating and
cooling setpoints must be configured. See the Heating Con-
trol and Cooling Control sections for further description on
these configurations. Configure the following setpoints:
4. To program time schedules, make sure
SCH.N
=1 under
Configuration
CCN
SC.OV
SCH.N
to configure
the control to use local schedules.
5. Under the
Timeclock
SCH.L
submenu, enter the desired
schedule. See Time Clock Configuration section on page 82
for further description of these configurations.
6. Under
Configuration
SP
SP.SP
, the supply duct static
pressure setpoint should be configured.
7. If supply air temperature reset is desired, under the
Configu-
ration
EDT.R
submenu, the following setpoints should
be configured:
NOTE: Configure either
RTIO
and
LIMT
or
RES.S
. All three are
not used.
8. See the Economizer Options section on page 22 for addition-
al economizer option configurations.
9. See the Exhaust Options section on page 22 for additional
exhaust option configurations.
Multi-Stage Constant Volume (CV) Units with
Mechanical Thermostat
To configure the unit, perform the following:
1. Under
Configuration
UNIT
C.TYP
, set
C.TYP
to 3
(TSTAT MULTI).
2. Remove jumpers or 4 TSTAT MULTI2 from R-W2 and W2-
W1 on TB4 in the control box. Connect thermostat to TB4.
3. Under the
Setpoints
menu, set the following configurations:
4. See the Economizer Options section on page 22 for
additional economizer option configurations.
5. See the Exhaust Options section on page 22 for additional
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 or 6 SPT MULTI2 between R-W2 and W2-
W1 on TB4 in the control box.
3. Under the
Setpoints
menu, the following configurations
should be set:
4. The degrees of demand from the space temperature setpoints
are configured under the
Configuration
D.LV.T
sub-
menu. See the Heating Control and Cooling Control sections
for further description on these configurations. Configure the
following setpoints:
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
Configura-
tion
CCN
SC.OV
SCH.N
to configure the control
to use local schedules.
8. Under the
Timeclock
SCH.L
submenu, enter the desired
schedule. See Time Clock Configuration section on page 82
for further description of these configurations.
9. See “Economizer Options” on page 22 for additional econo-
mizer option configurations.
IMPORTANT: The
Comfort
Link controls provide the user
with numerous configuration options such as setpoints, de-
mand levels, reset, and many others. If the building owner
or design engineer has not provided specific recommenda-
tions for these configuration settings, it is suggested that the
installer does not make changes to the default factory set-
tings. The factory-configured default values are appropriate
for many applications.
IMPORTANT: The unit is shipped with the unit control dis-
abled. Enable the control by setting Local Machine Disable
(
Service Test
STOP
) to No.
OHSP
Occupied Heat Setpoint
OCSP
Occupied Cool Setpoint
UHSP
Unoccupied Heat Setpoint
V.C.ON
VAV Occupied Cool On Delta
V.C.OF
VAV Occupied Cool Off Delta
SASP
Supply Air Setpoint
SP.SP
Static Pressure Setpoint
RS.CF
EDT Reset Configuration
RTIO
Reset Ratio (if
RS.CF
= 1 or 2)
LIMT
Reset Limit (if
RS.CF
= 1 or 2)
RES.S
EDT 4 to 20 mA Reset Input (if
RS.CF
= 3)
SA.HI
Supply Air Setpoint Hi
SA.LO
Supply Air Setpoint Lo
OHSP
Occupied Heat Setpoint
OCSP
Occupied Cool Setpoint
UHSP
Unoccupied Heat Setpoint
UCSP
Unoccupied Cool Setpoint
GAP
Heat-Cool Setpoint Gap
SA.HI
Supply Air Setpoint Hi
SA.LO
Supply Air Setpoint Lo
L.H.ON
Demand Level Lo Heat On
H.H.ON
Demand Level Hi Heat On
L.H.OF
Demand Level Lo Heat On
L.C.ON
Demand Level Lo Cool On
H.C.ON
Demand Level Hi Cool On
L.C.OF
Demand Level Lo Cool On
Summary of Contents for WEATHERMAKER 48A2020
Page 112: ...112 Fig 20 Typical Main Control Box Wiring Schematic 48 50A Units ...
Page 113: ...113 Fig 21 Typical Auxiliary Control Box Wiring Schematic ...
Page 114: ...114 Fig 22 Typical 2 Stage Gas Heat Wiring Schematic Size 060 Units Shown ...
Page 115: ...115 Fig 23 Typical Staged Gas Heat Wiring Schematic Size 060 Units Shown TO NEXT PAGE ...
Page 116: ...116 Fig 23 Typical Staged Gas Heat Wiring Schematic Size 060 Units Shown cont ...
Page 117: ...117 Fig 24 Typical Electric Heat Control Schematic 50 Series Size 060 Units Shown ...
Page 118: ...118 Fig 25 Typical Controls Option Wiring Schematic SW1 SW2 OR DEHUMIDIFY SWITCH ...
Page 119: ...119 Fig 26 Typical Power Schematic 48 50A2 A3 A4 A5 060 Unit Shown ...
Page 120: ...120 Fig 27 Typical Power Schematic of Greenspeed Low Ambient Option 48 50A 060 Unit Shown ...
Page 121: ...121 Fig 28 Typical Small Chassis Component Location Size 020 035 Units ...
Page 122: ...122 Fig 29 Typical Large Chassis Component Locations Size 040 060 Units ...
Page 185: ...185 APPENDIX C VFD INFORMATION cont Fig F Internal Enclosure Fan Replacement A48 7716 ...