Link4 iGrow 1800, Инструкция по установке и эксплуатации

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iGrow 1800 Installation Guide
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Cool Demand
Cooling Demand
Design Delta 45.0 F
Max OLight 1200W/m2
OLight Factor 0%
Design Delta
The Design Delta is maximum difference between the outside temperature and cooling setpoint that the cooling
system can maintain.
Max OLight
Max OLight is the maximum outdoor light level typically experienced by the greenhouse. This value is used to
calculate cool demand based on light. 1200W/m2 is a good approximation for North America.
OLight Factor
OLight Factor is a percentage of the outdoor light’s influence on determining cool demand. 0% represents no
influence, while 100% represents maximum influence.
Cooling Demand
Active Cool
Disabled
Stage Ovr Disabled
Stage NORM
Active Cool
When Active Cool is Disabled, the controller will operate only in stage based cooling (6 stages of cooling).
However when Active Cool is Enabled, fixed stage based control is turned off, and chilled water mixing valves
will begin modulating to whatever percentages the demand requires above the Active threshold.
Stage Override (Stage Ovr)
When Active Cooling is Enabled, and Stage Ovr is Enabled , you can force all the stage based equipment to a
specified stage so they don’t fight each other. You can select the stage for eliminating this contention in the last
entry.
Cooling Demand
Disabled Demand
Active > 75%
Passive < 25%
Active
When the Cool Demand rises above this percentage, the greenhouse will enter Active Cooling
Passive
When Cool Demand fall below this percentage, the greenhouse will enter passive cooling.
Note - When the iGrow first starts, if cool demand is less than the active cool setting, the greenhouse will be in
passive cooling.