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SETTINGS – COOL LOCKOUT 

21 

DEFINITION 

DEPENDENCIES 

FUNCTION 

Pressing the Cool Lockout field in 
the “System Settings Screen” will 
invoke the “Cool Lockout Screen” 
which will allow a temperature 
choice from OFF to 55°F to 80°F 
for the cool lockout functionality, 
adjustable in 5° increments.

 

If there is not a valid 
outdoor temperature 
available then this 
feature will be set to 
the OFF setting.

 

This functionality is used to hold off the cooling equipment 
demands if the outdoor air temperature is below the chosen 
value. A System Event warning will occur if the mode and 
indoor temperature dictate that there should be a cooling 
demand and the outdoor temperature value is holding off 
this demand.

 

Summary of Contents for EZ3

Page 1: ...ProductTrainingContent InstallerSettingsmanual ...

Page 2: ...r Celcius 13 Smart Recovery 14 Fan On with W 15 Reversing Valve 16 Indoor Temp Offset 17 Indoor Humidity Offset 18 TABLE OF CONTENTS Auto Changeover 19 Remote Sensor 20 Cool Lockout 21 Time Between Fuel Types 22 Cycles Per Hour 23 Humidifier 24 Dehumidifier 25 Max Heat Min Cool Set Point 26 27 Aux Heat Lockout 28 Heat Pump Lockout 29 Stage Delay 30 Forced Stage Up 31 Differential 32 Air Filter Rem...

Page 3: ...2 2 SYSTEM SETTINGS ...

Page 4: ...ersing Valve Indoor Temp Offset Indoor HUM Offset Auto Changeover Remote Sensor Cool Lockout Time B W Fuel Types Cycles per Hour Humidifier Dehumidifier Max Heat Setpoint Min Cool Setpoint Aux Heat Lockout HP Lockout Stage Delay Forced Stage Up Differential Air Filter Reminder FURNACE 1 A C 1 YES PROG F YES YES COOL 0 F 0 30 MIN NONE 55 F 15 MIN 4 NO NO 88 F 52 F OFF OFF 10 MIN 30 MIN 0 5 F 3000 H...

Page 5: ...mpleted the System Settings Screen screen will be displayed allowing the end user or installer to make changes to advanced settings on the thermostat None Once the System Settings Screen is displayed the end user has the option to Up Swipe and Down Swipe to navigate through multiple advanced settings options for the thermostat The yellow Row Indicator at the right side of these screens indicates t...

Page 6: ...INSTALLER SETTING OPTIONS 5 ...

Page 7: ...6 6 6 INSTALLER SETTINGS ...

Page 8: ... equipment type must be chosen so that an airflow source is available to the system operation The two types of indoor equipment defined for operation are a FURNACE and an AIR HANDLER sometimes also referred to as a FAN COIL The indoor equipment is not required to have a heat source present which is selectable with the Indoor Equipment Stages setting If control of a PACKAGE UNIT is desired and the ...

Page 9: ...Screen which allows for selection of the number of stages for the indoor equipment being used from 0 to 2 The option of 0 INDOOR EQUIPMENT STAGES is only available if the INDOOR EQUIPMENT TYPE of AIR HNDLR is selected INDOOR EQUIPMENT STAGES The numbers of stages chosen defines the number of gas heating stages or aux heating stages that are present in the indoor equipment ...

Page 10: ...e available and the COOL MODE will be disabled on the Mode Screen The OUTDOOR EQUIPMENT STAGES setting will also be forced to a value of 0 if NONE is selected for the outdoor equipment type The COOL TO DEHUMIDIFY functionality would also be disabled if the NONE is chosen for the outdoor equipment type OUTDOOR EQUIPMENT An outdoor equipment type is not required to be chosen and result in a selectio...

Page 11: ...ages are selected pressing the Save Button will save the selection into non volatile memory Pressing the Defaults Button will load the default outdoor equipment stages of 1 the user will still need to Save or Cancel this setting Pressing the Cancel Button will navigate back to the System Settings Screen The option of 0 OUTDOOR EQUIPMENT STAGES is only available if the OUTDOOR EQUIPMENT TYPE of NON...

Page 12: ...ature is only available if both a heating source and a cooling source is available a Cool Only or Heat Only system will not allow for AUTO mode The AUTO ALLOWED feature is used to enable and disable the ability of the AUTO MODE feature AUTO MODE feature allows the thermostat to automatically switch from heating mode to cooling mode to maintain the conditioned temperature between the heating and co...

Page 13: ... non programmable mode for the thermostat allow the thermostat to run in a simplified mode that will satisfy heating or cooling setpoints based on the setpoint value and mode chosen Operating the thermostat in a programmable mode allows the end user to setup heating and cooling setpoints for 4 periods of each day of the seven days of the week The thermostat has default heating and cooling setpoint...

Page 14: ...in the System Settings Screen will invoke the Fahrenheit or Celsius Screen which allows the thermostat to use either the Fahrenheit or Celsius scale to display temperature and setpoints None This feature allows the thermostat temperatures to be displayed using either the Fahrenheit scale or the Celsius scale ...

Page 15: ...rammable thermostat The Smart Recovery feature transitions the conditioned space from one programmable temperature period to the next so that the conditioned space temperature matches the programmable temperature set point at the start of each programmable time period This means for example that if the 4th period of the day temperature setting is lower than the 3rd period that precedes it then the...

Page 16: ...eld in the System Settings Screen will invoke the Fan On with W Screen which enables or disables the functionality to turn on the Fan G output with any W heating demand output None The Fan On With W feature is used to supply a fan output demand as soon as a W1 or W2 output demand is active ...

Page 17: ...r heat pump cooling demand This functionality is only used in operational logic if a Heat Pump is chosen as the Outdoor Equipment Type This functionality defines whether the ON state of the reversing valve is used for Heating or Cooling When the ON state of the reversing valve is used for Cooling the signal is typically referred to as a O demand When the ON state of the reversing valve is used for...

Page 18: ...reen will invoke the Indoor Temp Offset Screen which will offset the displayed thermostat room temperature from 5 to 5 adjustable in 1 increments None This functionality offers the end user the convenience of matching the actual sensed temperature to a different perceived temperature or a different temperature measuring device ...

Page 19: ...s Screen will invoke the Indoor HUM Offset Screen which will offset the displayed thermostat humidity reading from 5 to 5 adjustable in 1 increments None This functionality offers the end user the convenience of matching the actual sensed humidity to a different perceived humidity or a different humidity measuring device ...

Page 20: ...ver functionality adjustable in 5 minute increments Pressing the Defaults Button will load the default setting of 30 MIN the user will still need to Save or Cancel this setting Pressing the Cancel Button will navigate back to the System Settings Screen None This functionality sets up the minimum time between switching from heat to cool or from cool to heat demands when operating in Auto Mode The t...

Page 21: ... outdoor temperature sensing OUTDOOR or used for the indoor room temperature sensing INDOOR If the Remote Sensor is set to NONE or INDOOR the outdoor temperature will be acquired via Wi Fi through the server based on the geolocation of the phone tablet used to connect the thermostat to a router or based on the ISP location if a PC is used to connect the thermostat to a router The outdoor temperatu...

Page 22: ...nctionality adjustable in 5 increments If there is not a valid outdoor temperature available then this feature will be set to the OFF setting This functionality is used to hold off the cooling equipment demands if the outdoor air temperature is below the chosen value A System Event warning will occur if the mode and indoor temperature dictate that there should be a cooling demand and the outdoor t...

Page 23: ...Fuel Types Screen which will allow a time choice from 10 minutes to 25 minutes for the time between fuel choices functionality adjustable in 5 minute increments If there are not multiple fuel types this logic will not be used This functionality is used to set the minimum time limit between switching from one fuel type to another other staging rules may also be in effect ...

Page 24: ...our Screen which will allow a numeric choice from 2 to 6 for the CYCLE TIMER functionality adjustable in numerical increments of 2 None Based on the selection of 2 4 or 6 cycles per hour this timer is set to 30 15 or 10 minutes This time must elapse from the start of one cycle before another cycle can start It serves to impose the cycles per hour limits ...

Page 25: ...the O B functionality output is shared with the humidifier output This functionality is also not available if 3 Stages of Cooling is selected for the Outdoor Equipment stages because the Y3 functionality output is also shared with the humidifier output In humidification operation the humidifier will be on if there is humidity demand and any heating equipment is on The output is a 24VAC output only...

Page 26: ...will invoke the Dehumidifier Screen which enables or disables the COOL TO DEHUMIDIFY function The cool to dehumidify selection tells the system to operate the compressor within limits when there is a dehumidification demand even if there is no cooling demand The limits are that the system may overcool up to 2 F but no more while attempting to satisfy a dehumidification demand Within this 2 F range...

Page 27: ...ke the Max Heat Setpoint Screen which will allow a temperature choice from 50 F to 88 F for the max heat setpoint functionality adjustable in 1 F increments None This feature is used to choose the maximum heating setpoint that is available on the Heat Setpoint Wheel and the maximum heating setpoint that can be used for the program schedule ...

Page 28: ...ke the Min Cool Setpoint Screen which will allow a temperature choice from 52 F to 90 F for the min cool setpoint functionality adjustable in 1 F increments None This feature is used to choose the minimum cooling setpoint that is available on the Cool Setpoint Wheel and the minimum cooling setpoint that can be used for the program schedule ...

Page 29: ...t functionality is not available and will be set to the OFF setting with the Outdoor Equipment Type of NONE or AC selected because the aux heat lockout functionality needs HP heating to operate This functionality is also not available if a valid outdoor temperature is not available resulting in a System Event notification If the auxiliary heat lock out temperature setting is not OFF and the outdoo...

Page 30: ... This functionality is also not available if a valid outdoor temperature is not available resulting in a System Event notification If a setting of OFF is selected The heating equipment cycle shall always start with the heat pump regardless of the outdoor air temperature If a lockout temperature is selected and the outdoor air temperature is less than the selected temperature the heating cycle is s...

Page 31: ...table in 1 minute increments Multiple heating stages or multiple cooling stages must exist for this feature to be used The minimum amount of time the current stage must be energized before staging up to the next stage of capacity If the system demand is greater than three degrees then this configuration is ignored for the current heating or cooling cycle because the staging timers are canceled to ...

Page 32: ...ce from OFF to 10 minutes to 120 minutes for the forced stage up timer functionality adjustable in 10 minute increments Multiple heating stages or multiple cooling stages must exist for this feature to be used If time in a current demanded stage reaches the forced stage up selected time the thermostat will stage up to the next available stage of capacity even if differential demand is not met ...

Page 33: ...ments None This functionality specifies the required difference between the current room temperature and the setpoint before demand is initiated This value is additive for each additional stage of equipment being demanded e g A chosen Differential value of 0 5 F requires 0 5 degree difference between setpoint and room temperature before first stage is turned on Then a value of 1 0 degree of differ...

Page 34: ...ctionality defines a chosen number of hours before a System Event will occur to remind the homeowner to change the indoor air filter A System Event will not occur to remind the homeowner to change the indoor air filter if the OFF setting is selected Decrements to the timer will happen each hour of total equipment runtime is accumulated Minute counts within each hour are not stored in non volatile ...

Page 35: ...ctionality defines a chosen number of hours before a System Event will occur to remind the homeowner to change the indoor air filter A System Event will not occur to remind the homeowner to change the indoor air filter if the OFF setting is selected Decrements to the timer will happen each hour of total equipment runtime is accumulated Minute counts within each hour are not stored in non volatile ...

Page 36: ... Filter Reminder FURNACE 1 A C 1 YES PROG F YES YES COOL 0 F 0 30 MIN NONE 55 F 15 MIN 4 NO NO 88 F 52 F OFF OFF 10 MIN 30 MIN 0 5 F 3000 HRSFURNACE 35 SCREEN SEGMENT DEFINITION FUNCTION Restore Defaults Restore Defaults Screen will allow the user to reset all system settings back to factory default values Pressing and holding the 5 Button will count down to initiate the restore defaults operation...

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