BASIC POLY-VENT OPERATION - PVIII (Two-Stage Inflation)
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Thermostats for the Poly-Vent system should be mounted approximately centered between each sidewall and centered from
front to rear of the structure. They should be mounted eye level. However, some growers prefer to mount thermostats at bench
height.
Initial start-up: PVIII Two Stage Poly-Vent
When inflating the Poly-Vent for the first time - before wiring the thermostat - turn on the top blower only. Moving from one end to
the other, manually help the Poly-Vent tubes up so that they do not twist. After the top section is completely inflated, turn on the
lower blower (before wiring to the thermostat). Again, moving from one end to the other, manually help the lower Poly-Vent tubes
up so that they inflate properly.
The included wiring diagrams should be used to wire the thermostats into the system. Note that the wiring circuits more resemble
a "heating" circuit than a "cooling" circuit. This is the correct way to wire your thermostats. Please wire exactly as shown for
correct results.
With the Poly-Vent deflated, slowly turn the thermostat to a higher temperature until one of the blowers is activated. If the system
is operating properly, the top blower will activate first and inflate the upper section of the PVIII system. Once the upper section of
the PVIII is inflated, slowly continue to raise the temperature of the thermostat in approximately 3 to 6 degree increments until
the lower blower motor activates inflating the lower section of the PVIII.
After the Poly-Vent has been successfully inflated, check for proper complete inflate/deflate cycle operation. Slowly lower the
temperature adjustment until the lower blower shuts off. If the lower blower motor is shut off first, the system is operating
properly.
Now adjust the thermostat to the desired temperature to be maintained in your structure.
NOTE: If you have a BUBS (Back-Up Blower System) the BUBS is not generally wired to the thermostat so that if it is activated,
the Poly-Vent will remain inflated and will not cycle again until the power is restored.
NOTE: THIS BASIC POLY-VENT OPERATION PAGE IS FOR PVIII (TWO-STAGE) SYSTEMS ONLY.
IF YOU PURCHASED A PVII (SINGLE-STAGE) SYSTEM, SEE THE PREVIOUS PAGE FOR THE
CORRECT BASIC POLY-VENT OPERATION.
