JOHNSON CONTROLS
101
SECTION 5 – SEQUENCE OF OPERATION
FORM 100.50-NOM12
ISSUE DATE: 04/02/2019
5
TABLE 38 - TEK-AIR FACTORY SETTINGS
Area of ow device 27.1 sq ft
Sensor ow coefcient 0.762
Altitude 0 feet
Analog out ow setpoint
70–80 ton: 32,000 CFM
90–105 ton: 36,000 CFM
Press average interval 10 seconds
Use fan interlock ON
Auto zero interval 30 minutes
Enclosure temp setpoint 120.0°F
Transducer zero 0.00 iwg
Transducer FS 0.25 iwg
• The Tek-Air full IAQ is programmed at the fac-
tory for proper operation in the Series 100 unit.
Tek-Air Full IAQ with Fixed Minimum
• Ventilation system must be set to User Enabled in
the PROGRAM-VENTILATION menu.
• Damper hardware must be set to Tek-Air full IAQ
in the OPTIONS-VENTILATION menu.
• Control type must be set to Fixed Minimum in the
PROGRAM-VENTILATION menu.
• Minimum flow outside air setpoint must be set in
the SETPOINTS-VENTILATION menu.
• When the Series 100 unit is in an Occ mode and
the supply fan is running, the outside air damper
is driven open/closed to maintain the minimum
outside airflow setpoint.
Be aware that if the economizer is ac-
tive, it can override this outside air max
position setpoint to bring in the required
outside air to satisfy cooling demand. The
economizer cannot drive the outside air
damper below the outside air min posi-
tion setpoint.
Tek-Air Full IAQ with Demand Ventilation
• Ventilation system must be set to User Enabled in
the PROGRAM-VENTILATION menu.
• Damper hardware must be set to Tek-Air full IAQ
in the OPTIONS-VENTILATION menu.
• Control type must be set to Demand in the PRO-
GRAM-VENTILATION menu.
• CO
2
sensors must be set to Installed in the OP-
TIONS-VENTILATION menu.
• CO
2
offset setpoint must be set in the SET-
POINTS-VENTILATION menu.
• Minimum outside airow setpoint must be set in
the SETPOINTS-VENTILATION menu.
• Maximum outside airow setpoint must be en-
tered in the SETPOINTS-VENTILATION menu.
• When the Series 100 unit is in an Occ mode and
the supply fan is running, the outside air damper is
driven open/closed as described:
1. If the ventilation demand is 0%, the outside
air damper is controlled to the min outside
airflow setpoint
2. If the ventilation demand is 100%, the out-
side air damper is controlled to the max out-
side airflow setpoint
3. If the ventilation demand is between 0–100%,
the outside air damper is controlled to a CFM
value between the outside airflow min and
max setpoints
Be aware that if the economizer is ac-
tive, it can override this outside air max
position setpoint to bring in the required
outside air to satisfy cooling demand. The
economizer cannot drive the outside air
damper below the outside air min posi-
tion setpoint.
The Tek-Air full IAQ is sensitive to lower
airow velocities. It is possible that the
display goes blank rather than displays
a CFM when the outside air drops below
the sensitivity of the air measuring station.
LD28129
FIGURE 52 - TEK-AIR FULL IAQ WITH DEMAND
VENTILATION