21
CONTROLS QUICK START
The following section will provide a quick user guide to setting
up and configuring the A Series units with ComfortLink 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 ComfortLink 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 . O N VAV Occupied Cool On Delta
V. C . O F 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
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