AFA4000/E VAV Airflow Controller / p.25
When Pushbutton I is set to Fan On/Off, the following additional functions appear in the
Pushbutton I configuration menu:
• Not active
• Off enable PB2. Pushbutton II is switched and held OFF if
pushbutton I is ON.
• On enable PB2. Pushbutton II is switched and held OFF if
pushbutton I is OFF.
• On Run Up enable PB2. Pushbutton II is enabled when
Pushbutton I run up timer has elapsed.
• Not enabled / enabled. When enabled, select the Run Up
Timer relay and set the Run Up Time.
When the fan is set to ON, the Run Up Timer activates after
the Run Un Time. This function is used when 2 output relays
are required for Pushbutton I.
• Enabled / not enabled. When enabled, select the Run Down
Time.
When the fan is set to OFF, the fan remains on for the set
time, and a down arrow next to the pushbutton icon appears
to indicate that the Run Down Timer is active.
• Pushbutton II set to Lights On / Off
• Lights On / Off Relay operates
• Pushbutton II set to UV Lights On / Off
• UV Lights On / Off Relay operates
For Australian Standards Operation only. This requires a special
software version.
The following parameters should be set:
• Pushbutton I icon set to Fan On/Off, Relay Output 1
• Pushbutton I interlock = On Run Up Pb2
• Pushbutton I interlock Run Up Timer = set to the required pre-
purge time
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