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| Description of Equipment

HyperStat Split is the best-in-class thermostat that can measure parameters in the zone and controls equipment at zone and system levels (RTUs & FCUs) by connecting seamlessly over two wires reducing the cost of additional cabling.

HyperLite sits and monitors Air quality (with up to 8 onboard sensors) inside a zone and is equipped with a 2.8" TFT screen paired with mechanical buttons and a touch slider for taking user inputs and displaying zone data.

Connect Module sits inside the RTU/FCU, does stage or modular controls, and can accept up to 8 Universal analog inputs.

The HyperStat Split Conventional Package Unit (CPU) + Economizer is a standalone profile, that provides both heating and cooling equipment controls for conditioning.

The CPU + Economizer allows the choice between fully modulating and staged equipment control.

Quick Summary
Cooling Equipment Control Reset based on Space Temperature & mode of operation
Heating Equipment Control Reset based on Space Temperature & mode of operation
Fan Control Reset based on Space Temperature & mode of operation (Cooling/ Heating)= Cooling/Heating Loopoutput* analogFanSpeedMultiplier (default=1)
OAO/Economizer Control

Free cooling based on the outside air Temperature and Humidity or dry bulb thresholds, Demand Controlled Ventilation, based on space CO2 levels, factoring Mixed air temperature safeties.

 

The table below talks about the conditions that favor, and do not favor Economization, Demand control ventilation:

Conditions Results

If the Outside Air Temperature is < standaloneEconomizingDryBulbThreshold (55°F)

Economizing enabled via economizingLoopOutput = coolingLoopOutput * 100/standaloneEconomizingToMainCoolingLoopMap

If the Outside Air Temperature is not between economizingMinTemp and economizingMaxTemp

Economizing disabled
If the Outside Air Humidity is not between economizingMinHumidity and economizingMaxHumidity Economizing disabled
If the outsideEnthalpy + enthalpyDuctCompesationOffset < insideEnthalpy

Economizing enabled via economizingLoopOutput = coolingLoopOutput * 100/standaloneEconomizingToMainCoolingLoopMap 

If the outsideEnthalpy + enthalpyDuctCompesationOffset > insideEnthalpy Economizing disabled
When zone CO2 > zoneCO2Threshold Demand control ventilation (DCV) enabled via DcvLoopOutput (which is = ((zoneCO2-zoneCO2Threshold)/co2DamperOpeningRate

If, economizingLoopOutput > dcvAirCalculatedMinDamper, then
outsideAirLoopOutput = economizingLoopOutput, else
outsideAirLoopOutput = dcvAirCalculatedMinDamper

There are a few Mixed Air Temperature (MAT) safety checks in place that influence the outsideAirLoopOutput via outsideAirFinalLoopOutpout.

The table below talks about the same:

Checks Influence
If Mixed Air Temperature (MAT) is between mixedAirTraget (50°F) & MaxTemp (70°F) then, outsideAirFinalLoopOutpout= outsideAirLoopOutput
If Mixed Air Temperature (MAT) is < MixedAirMinimum (44°F) then, the Damper progresses to the minimum position
If Mixed Air Temperature (MAT) is between MixedAirMinimum (44°F) &  mixedAirTraget (50°F) then, outsideAirFinalLoopOutpout= outsideAirLoopOutput* (1- (oaoDamperMatTarget-MAT)/(oaoDamperMatTarget-oaoDamperMatMin))

 

Exhaust Fan Control

Reset based on the EconomizingloopOutput, to help manage air pressure in a space, when the air pressure is higher than expected.

Stage 1 is enabled when the economizing loop output is at 50% (Default, Stage 2 is enabled when the economizing loop is at 90% (Default), with a hysteresis involved via configured Exhaust Fan Hysteresis (%)

Example:

For default hysteresis of 5% the Exhaust Fan stage 2 deactivates at 90-5 = 85% of the Economizing loop output.

And Exhaust Fan stage 1 deactivates at 50-5 = 45% of the Economizing loop output

| Schematics

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| Control System Object List

 Object Name Type Input/Output Type
Heating Desired Temp User Intent NA
Cooling Desired Temp User Intent NA
Current Temp Input HyperLite Onboard/ OWI Sensor
Humidity Input HyperLite Onboard/ OWI Sensor
User Cooling Max Limit User Intent NA
User Cooling Min Limit User Intent NA
User Heating Max Limit User Intent NA
User Heating Max Limit User Intent NA
Conditioning Mode User Intent NA
Operation Mode Input NA
Fan Mode User Intent NA
Occupancy Mode

Input

 

HyperLite Onboard
Supply Air Temperature Input OWI Sensor/ Universal Input 
Supply Air Humidity Input OWI Sensor
Mixed Air Temperature Input OWI Sensor/Universal Input 
Mixed Air Humidity Input OWI Sensor
Outside Air Temperature Input OWI Sensor/Universal Input 
Outside Air Humidity Input OWI Sensor
Duct Static Pressure Input OWI Sensor/Universal Input 
Humidity target User Intent NA
Cooling Stage 1 Output Connect Module Relay
Cooling Stage 2 Output Connect Module Relay
Cooling Stage 3 Output Connect Module Relay
Fan Low Speed Output Connect Module Relay
Fan Medium Speed Output Connect Module Relay
Fan High Speed Output Connect Module Relay
Heating Stage 1 Output Connect Module Relay
Heating Stage 2 Output Connect Module Relay
Heating Stage 3 Output Connect Module Relay
Modulating Cooling Output Connect Module AnalogOut
Modulating Heating Output Connect Module AnalogOut
Modulating Linear Fan Speed Output Connect Module AnalogOut
Modulating Staged Fan Speed Output Connect Module AnalogOut
Modulating OAO Damper Output Connect Module AnalogOut
CO2 Sensor(ppm) Input HyperLite Onboard

Current TX (0-10Amps)

Current TX (0-20Amps)

Current TX (0-50Amps)

Current TX (0-100Amps)

Current TX (0-150Amps)

Filter Pressure (NC)

Filter Pressure (NO)

Condensate (NC)

Condensate (NO)

Generic 0-10V

Generic 1-100KOhm

Inputs Connect Module Universal Input 

| Sequence of Operation

The sequence of operation is completely driven based on Occupancy modeSpace Current Temperature, the set Cooling and Heating Desired Temperatures, Outside Air Temperature levels, Space CO2 levels, and Mixed Air Temperature levels. 

Let us understand the Sequence of operations based on the occupancy modes, and how the other factors contribute to the sequence of operations during different types of occupancy modes.

| Occupancy Modes

The occupancy mode (Occupied or Unoccupied) shall be determined through a user-adjustable, graphical, seven-day schedule with a holiday schedule, alongside the configurable autoaway and forced occupied options (external schedule influencers) for optimized controls and enhanced energy savings.

Based on the above aspects factoring into the occupancy the following can be the possible applicable occupancy modes:

  • Pre- Conditioning
  • Occupied
  • Unoccupied
  • Auto-Away
  • Forced Occupied

| Sequence of Operation During Pre-Conditioning

Warm-up:

  • If the space temperature is below the occupied heating temperature setpoint, the pre-conditioning shall initiate the morning warm-up via HeatingLoopOutput
  • Where, the dcvLoopOutput, EconomizingLoopOutput, OutsideAirLoopOutput is disabled

Pre-cooling:

  • Suppose the space temperature is above the occupied space cooling temperature setpoint,  the pre-conditioning shall initiate the morning pre-cooling via CoolingLoopOutput
  • Where the dcvLoopOutput is disabled.
  • The EconomizingLoopOutput, OutsideAirLoopOutput is enabled for use if conditions are favorable as per the information in the quick summary table above for economization.

| Sequence of Operation During Occupied

At all occupied times: (based on a set schedule)

  • The device maintains a space temperature within the Heating Desired Temperature and Cooling Desired Temperature Range.

During Deadband:

  • A minimum fan speed is maintained, and the minimum fan analog voltages are set to 2V (customizable) for linear fans, and a recirculation fan speed voltage for staged fans.

During Heating:

  • When the space current temperature falls below the Heating Desired Temperature the HeatingLoopOutput is enabled. based on the difference in the space current temperature and heating desired temperature.
  • The FanLoopOutput is enabled based on HeatingLoopOutput (FanLoopOutput= HeatingLoopOuptut* analogFanSpeedMultiplier(1))
  • When the space CO2 level is above the CO2 threshold set, the dcvLoopOutput is enabled if conditions are favorable as per the information in the quick summary table above for demand control ventilation.
  • The EconomizingLoop Output is disabled.

During Cooling:

  • When the space current temperature is above the Cooling Desired Temperature the CoolingLoopOutput is enabled, based on the difference in the space current temperature and cooling desired temperature.
  • The FanLoopOutput is enabled based on CoolingLoopOutput (FanLoopOutput= CoolingLoopOuptut* analogFanSpeedMultiplier(1))
  • When the space CO2 level is above the CO2 threshold set, the dcvLoopOutput is enabled if conditions are favorable as per the information in the quick summary table above for demand control ventilation.
  • The EconomizingLoopOutput, OutsideAirLoopOutput is enabled for use if conditions are favorable according to the information in the quick summary table above for economization. Also, out of DCV and Economization loops whichever is higher takes precedence in the OAO damper position calculation. 

Humidifier:

  • The humidifier shall modulate to maintain a return air humidity setpoint of 45% (adjustable), subject to the duct's high limit setpoint of 90% (adjustable). Humidification shall be locked out whenever the fan is de-energized or the duct humidity exceeds the high limit setpoint.

| Sequence of Operation During AutoAway

  • The range of Heating Desired Temperature and Cooling Desired Temperature drifts further away.
  • The device maintains a space temperature within the newly set Heating Desired Temperature and Cooling Desired Temperature Range.

During Deadband:

  • FanLoopOutput, HeatingLoopOutput, & CoolingLoopOutput, are disabled

During Heating:

  • When the space current temperature falls below the heating autoaway setback temperature, the HeatingLoopOutput is enabled. based on the difference in the space's current temperature and the heating autoaway setback temperature.
  • The FanLoopOutput is enabled based on HeatingLoopOutput (FanLoopOutput= HeatingLoopOuptut* analogFanSpeedMultiplier(1))

During Cooling:

  • When the space current is above the cooling autoaway setback temperature, the CoolingLoopOutput is enabled. based on the difference in the space's current temperature and the cooling autoaway setback temperature
  • The FanLoopOutput is enabled based on CoolingLoopOutput (FanLoopOutput=CoolingLoopOuptut* analogFanSpeedMultiplier(1))

| Sequence of Operation During UnOccupied

  • The range of Heating Desired Temperature and Cooling Desired Temperature drifts further away.
  • The device maintains a space temperature within the newly set Heating Desired Temperature and Cooling Desired Temperature Range.

During Deadband:

  • FanLoopOutput, HeatingLoopOutput, & CoolingLoopOutput, are disabled

During Heating:

  • When the space current temperature falls below the heating unoccupied setback temperature, the HeatingLoopOutput is enabled. based on the difference in the space's current temperature and the heating unoccupied setback temperature.
  • The FanLoopOutput is enabled based on HeatingLoopOutput (FanLoopOutput= HeatingLoopOuptut* analogFanSpeedMultiplier(1))
  • The dcvLoopOutput, EconomizingLoopOutput, OutsideAirLoopOutput is disabled

During Cooling:

  • When the space current temperature is above the cooling unoccupied setback temperature, the CoolingLoopOutput is enabled. based on the difference in the space's current temperature and the cooling unoccupied setback temperature.
  • The FanLoopOutput is enabled based on CoolingLoopOutput (FanLoopOutput=CoolingLoopOuptut* analogFanSpeedMultiplier(1))
  • The dcvLoopOutput is disabled
  • The EconomizingLoopOutput, OutsideAirLoopOutput is enabled for use if conditions are favorable as per the information in the quick summary table above for economization.

| Sequence of Operation During Forced Occupied

  • The device maintains a space temperature within the Heating Desired Temperature and Cooling Desired Temperature Range.

During Deadband:

  • A minimum FanLoopOutput is enabled regardless of no conditioning.

During Heating:

  • When the space current temperature falls below the Heating Desired Temperature the HeatingLoopOutput is enabled. based on the difference in the space current temperature and heating desired temperature.
  • The FanLoopOutput is enabled based on HeatingLoopOutput (FanLoopOutput= HeatingLoopOuptut* analogFanSpeedMultiplier(1))
  • When the space CO2 level is above the CO2 threshold set, the dcvLoopOutput is enabled if conditions are favorable as per the information in the quick summary table above for demand control ventilation.
  • The EconomizingLoopOutput is disabled.

During Cooling:

  • When the space current temperature is above the Cooling Desired Temperature the CoolingLoopOutput is enabled, based on the difference in the space current temperature and cooling desired temperature.
  • The FanLoopOutput is enabled based on CoolingLoopOutput (FanLoopOutput= CoolingLoopOuptut* analogFanSpeedMultiplier(1))
  • When the space CO2 level is above the CO2 threshold set, the dcvLoopOutput is enabled if conditions are favorable as per the information in the quick summary table above for demand control ventilation.
  • The EconomizingLoopOutput, OutsideAirLoopOutput is enabled for use if conditions are favorable as per the information in the quick summary table above for economization.

| Sequence of Operation During Emergency Conditioning

when building limits are violated, and the recorded temperature is within the building limit plus leeway the conditioning will happen in the direction of zone load.

| Sequence of Operation During Temp Dead

And, When the Building temperature breaches the building limits, beyond the leeway limits all the following loops are disabled:

  • CoolingLoopOutput
  • HeatingLoopOutput
  • FanLoopOutput
  • dcvLoopOutput
  • EconomizingLoopuOutput
  • OutsideAirLoopOutput

| Control Mode Summary

Modes & 

Operation

Pre-Conditioning Occupied AutoAway Unoccupied Forced Occupied
Auto

(HeatingLoopOutput 

FanLoopOutput) /

(CoolingLoopOutput

FanLoopOutput

OutsideAirLoopOutput / OutsideAirFinalLoopOutput

(HeatingLoopOutput

FanLoopOutput

dcvLoopOutput) /

(CoolingLoopOutput

FanLoopOutput

dcvLoopOutput

OutsideAirLoopOutput / OutsideAirFinalLoopOutput

(HeatingLoopOutput

FanLoopOutput) / 

(CoolingLoopOutput

FanLoopOutput)

(HeatingLoopOutput

FanLoopOutput) /

(CoolingLoopOutput

FanLoopOutput

OutsideAirLoopOutput/ OutsideAirFinalLoopOutput

(HeatingLoopOutput

FanLoopOutput

dcvLoopOutput) /

(CoolingLoopOutput

FanLoopOutput

dcvLoopOutput

OutsideAirLoopOutput / OutsideAirFinalLoopOutput

Heat Only

HeatingLoopOutput

FanLoopOutput

HeatingLoopOutput

FanLoopOutput

dcvLoopOutput

HeatingLoopOutput

FanLoopOutput

HeatingLoopOutput

FanLoopOutput

HeatingLoopOutput

FanLoopOutput

dcvLoopOutput

Cool Only

CoolingLoopOutput

FanLoopOutput

OutsideAirLoopOutput/ OutsideAirFinalLoopOutput

CoolingLoopOutput

FanLoopOutput

dcvLoopOutput

OutsideAirLoopOutput/ OutsideAirFinalLoopOutput

CoolingLoopOutput

FanLoopOutput

CoolingLoopOutput

FanLoopOutput

OutsideAirLoopOutput/ OutsideAirFinalLoopOutput

CoolingLoopOutput

FanLoopOutput

dcvLoopOutput

OutsideAirLoopOutput/ OutsideAirFinalLoopOutput

Off

All Loops Deactivated

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