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® 2018 Valco Companies, Inc.
Full Opening Size
Input the full opening size.
TUNNEL INLET GROUP #1 SETTING
Z1-S01
Full Opening Size (Inches): 12
Full Open Travel Time
Input the time it takes for the inlet to open completely. The controller uses this time to determine how open the inlet
is, so enter the exact travel time. If a Position Sensor is attached to the Inlet, the travel time will be set automatically
when the Position Sensor is calibrated.
TUNNEL INLET GROUP #1 SETTING
Z1-S01
Full Open Travel Time: 1:00
Sidewall, Tunnel & Ceiling Inlet Settings - continued
Full Close Travel Time
Input the time it takes for the inlet to close completely. The controller uses this time to determine how closed
the inlet is, so enter the exact travel time. If a Position Sensor is attached to the Inlet, the travel time will be set
automatically when the Position Sensor is calibrated.
TUNNEL INLET GROUP #1 SETTING
Z1-S01
Full Close Travel Time: 1:00
You can select each fan group only once for each inlet.
Interlock #
Fan
Fan ON
Temp
Tunnel
Curtain
will Open
Interlock 1
Tunnel 1
80
12”
Interlock 2
Tunnel 2
82
24”
Interlock 3
Tunnel 3
84
36”
Interlock 4
Tunnel 4
86
48”
Fan Groups
On/Sizes
# of
Fans ON
Proportional
Opening
Stepping
Opening
#1 1/5 in.
1
5 inches
5 inches
1.5
7.5 inches
5 inches
2
10 inches
5 inches
2.5
12.5 inches
5 inches
#2 3/15 in.
3
15 inches
15 inches
Interlock Fan
Proportional versus Stepping
Proportional versus Stepping
This is an extension of the Tunnel Fan Groups On / Opening Size menu item. It allows two settings:
Proportional - the inlet will open based on a percentage of the Tunnel fans running between each level in the Fan
Groups On settings. This allows a slow ramping of the opening of the inlet as the fans turn on and off.
Stepping - the inlet will open to the specified size for each level in the Tunnel Fan Groups On settings and will not
move again until the number of fans running reaches the next level. The advantage of the Stepping setting is so the
inlet does not open and close rapidly when a variable speed fan increases and decreases its speed.