Savant SST-W100, Руководство по развертыванию

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Humidity Control Logic (HCL)
The Humidity Control Logic (HCL) works to make the HVAC system run e ffi ciently and works to prevent a
humidifier and a cooling cycle from working against each other.
• HCL prevents a dehumidifier from being switched on if the last call to the HVAC system was for heating.
• HCL only allows a dehumidifier to be switched on if the last call to the HVAC system was for cooling.
• HCL prevents a humidifier from being switched on if the last call to the HVAC system was for cooling.
• The HCL only allows a humidifier to be switched on if the last call to the HVAC system is for heat.
• The HCL extends (Does Not Trigger) a call for cooling if the humidity level is not met.
By following the rules above, the HCL works to prevent a scenario where a call for humidity happens during
or immediately after a call for cooling has occurred. These two functions would work against each other so
the HVAC system runs ine
ffi ciently.
Configure HCL
1. Press the MENU button to open the Menu Selection screen.
2. Open the Installer Settings menu by pressing the two middle buttons simultaneously for 3 seconds.
Refer to the Humidity Monitoring Icon section for instructions.
3. From the Installer Settings screen, scroll down and Select the Humidity Settings option.
4. From the Humidity Settings screen, scroll down and set each of the following parameters using the +/-
buttons:
Option Description
RH Setpoint Sets the desired level of humidity within a zone.
RH
Temp Delta
Sets the Relative Humidity Temperature Delta .
Explanation of Functionality:
A cooling cycle is initiated because the temperature rises above the Cooling Setpoint . The HCL
function extends the cool cycle and allows the temperature to continue to drop below the
Cooling Setpoint if the < RH Setpoint + RH SP Delta > is not reached. If the temp drops below the
Cooling Setpoint by more than the < Cooling Setpoint - RH Temp Delta >, the cooling cycle is
terminated. (RH Temp Delta Range = 1°F - 5°F)
Example:
Cooling SetPoint = 80°, RH SetPoint = 45%, RH Temp Delta = 3°F, RH SP Delta = 1%, RH O ff Delta
= 2%, New Cool SP = 80° - 3° = 77°F
• A cooling cycle is initiated because the temperature rises above the Cooling Setpoint of 80°.
• Upon cooling the space to 80°F the HCL engages and extends the cool call because the
current Relative Humidity (now at 54%) is still above the (RH Setpoint - RH O ff Delta = 46%).
• If the space reaches the new Min Cool SP of 77°F before reaching the RH Setpoint, the cooling
cycle is terminated
RH
SP Delta
Sets the Relative Humidity Setpoint Delta .
Explanation of Functionality:
A cooling cycle is initiated because the temperature rises above the Cooling Setpoint . The
cooling cycle lowers the temp down to the Cooling Setpoint . If however, the humidity in the
space remains above the (RH Se RH SP Delta) the cool cycle will be extended.
(RH Setpoint Delta Range = 1 to 10%)
Example:
Cooling Setpoint = 80°, RH Setpoint = 45%, RH SP Delta = 4%, RH O ff Delta = 2%, RH Temp Delta
= 3°F
• A cooling cycle is initiated because the temperature rises above the
Cooling Setpoint of 80°F.
• The cooling cycle lowers the temperature back to the Cooling Setpoint of 80°F. However, the
humidity which is now at 54% is still higher than the (RH Se RH SP Delta = 49%).
• At this point the cooling cycle is extended.
SST-W100 Wireless Thermostat Deployment Guide Copyright © 2016 Savant Systems, LLC
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