800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA
10
07/10 - Subject to change. © Belimo Aircontrols (USA), Inc.
Operating Instructions
ZTH-GEN
Screen 2
To change the Vmax value press the – button until you reach
the required value then press the OK button.
Screen 4
Press the +/- buttons to select different override commands,
once selected press OK to execute.
AUTO: Automatic Operation
OPEN: Overrides the valve to the maximum aperture (90°)
CLOSE: Overrides the valve to minimum aperture (0°)
Vmax: Overrides the valve to its maximum GPM
STOP: Overrides the valve to the last valve position
Note: the override
remains active
even after you
disconnect
the ZTH-GEN,
it is released
using the AUTO
command or
cycling power on
the actuator.
Screen 6
This screen displays the current GPM and the setpoint send by
the controller. The voltage signal is converted to GPM in the
actuator. This can be used to troubleshooting to verify the signal
send by the controller and to verify Setpoint vs. Actual flow.
Screen 3
A message is displayed “Y and U5 Adjusted” for 5 seconds.
Then the new Vmax value is displayed. Press ESC to continue
to the next screen or simple disconnect the device from the
actuator.
Screen 5
This screen displays the current GPM and valve position. This
is used for troubleshooting. A small valve position and big GPM
reading might indicate overpressure in the system. A small flow
and a big valve position might indicate that there is not enough
flow or pressure in the system
