SUPER-Selector
‘
PT Control
Page 8
Assigning Stages to Mode Changes
On the left of the control panel is a switch which sets the stage that the control goes
from power to tunnel mode.
Using this switch, it is possible to force the control to stay in power mode (no tunnel),
or force the control into tunnel mode (locked in tunnel).
If locked in tunnel, the minimum number of fans allowed to run when in tunnel
must be locked on. (switches set in the on position).
The (2) lights in the upper right corner of the control indicate the mode the control is in.
Mode Transitions
Power to Tunnel
It is important that the sensor chosen to be the control sensor is located in a position
where the temperature does not decrease very much during the process of converting
from the power mode to the tunnel ventilation mode. In general, the temperature will
fall the most at the tunnel inlet curtain end of the house during this transition and fall the
least, if at all, at the tunnel fan end of the house.
There needs to be at least four (preferably five) 48" fans running prior to going to
Tunnel Mode.
Tunnel to Power
The transition from tunnel to power occurs at the stage temperature directly below the
stage temperature set to go from power to tunnel.
MV1532-1 12/97
2
1
TUNNEL
NO
10
TUN.
POWER
LOCKED
IN TUN.
4
5
3
7
8
9
6