iGrow 1800 Installation Guide
Page98
Link4 (714) 524-0004
Note
: For On/Off equipment, a “1” indicates that the equipment is to be turned On in the override state. A “0”
would indicate that it is to go Off. The - - indicate that the equipment is not to be subject to the override.
For proportional devices, a percentage open for vents and a percentage closed for curtains would be
entered for the override.
For vents, the percentage open is a “minimum” value. For example, if the vent is open to 30% because of
cooling, then when the dehumidification state is active, the vent will stay at 30%. However, if the vent were
closed, and the DH1 state becomes active, the vent will go to 5% according to our example.
Pressing the “next” button takes you to the next screen. When in a dehumidify override state you have the
option of cycling the dehumidification state. In the example, a
Max On
for 5 minutes and a
Min Off
for 10
minutes is programmed. This means that if the humidity is above the target, the dehumidify state will cycle on
for 5 minutes and off for ten. If during the On time, the humidity drops below the target, the dehumidification
state will end and the equipment will return to normal temperature control.
The
Heat Boost
is another means of reducing the humidity. You can automatically increase the setpoint by the
amount entered. This adjustment is subject to the On/Off cycling. If you want to turn off the dehum cycling,
then just set the Min Off to 0.
The final entry is the
outside temperature below which the Low temp DeHumidity Low Temperature (DHLT)
stage is enabled. From the example, when the outside temperature is less than 35
°
F, the exhaust fan will be
turned off and Vent1 will go to a minimum of 5 % open.
Stage Overrides
System Setup
Setpoint/TimePeriod
Advanced Setpoints
Program Equipment
Dehumidify/Humidify
Stage Overrides
Equipment Overrides
Smart Cool Settings
Setpoint Alarms
Auxiliary Controls
Expansion Settings
Heat Demand
Cool Demand
Stage Override 1
Off
Force to Stage -----
At 8:00A to 8:15A
Occurs One Time Only
Stage overrides are useful for testing purposes, where you can force the iGrow1600/1800 into any of the
heating or cooling stages. They are also useful for fumigation, where there are spraying cycles the require
everything to be closed and then exhaust cycle where air exchange takes place.