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1 VAV Parameters 2017 products.koer.com Page 1 of 14

2 INTRODUCTION Learn how to setup various VAV parameters and configurations, PID calculation elements, EC motor voltages, wall type etc products.koer.com Page 2 of 14

Step 1 Enter Advanded Menu ONLY AUTHORIZED MAINTENANCE PERSONNEL SHOULD

Enter Admin Password Menu appears Use the numbers to enter 4 digit

3 Step 1 Enter Advanded Menu ONLY AUTHORIZED MAINTENANCE PERSONNEL SHOULD ENTER ADVANCED MENU AND MAKE CHANGES Picture 1. Press Menu Button Picture 2. Press Advanced to enter Advanced menu Picture 3. Enter Admin Password Menu appears Use the numbers to enter 4 digit factory preset pin. Number is being displayed in the blue ribbon Press DEL button to delete incorrect number Press OK to confirm input 2017 products.koer.com Page 3 of 14

4 Step 2 Enter Parameters Menu Picture 1. Press Parameter button to enter Parameter menu Picture 2. You entered Parameter menu Picture 2. Use Home button to return to Home Screen Picture 2. Use Up button to return to Advanced Menu Picture 2. Use Next and Prev button to navigate through various settings 2017 products.koer.com Page 4 of 14

Step 3 Control Sequence Go to Parameters 1 / 6 Menu Control sequence: The control sequence defines whether the controlled system is capable of heating, cooling or ventilating the zone.

5 Step 3 Control Sequence Go to Parameters 1 / 6 Menu Control sequence: The control sequence defines whether the controlled system is capable of heating, cooling or ventilating the zone. Select the desired control sequence by pressing the button next to Control sequence. The options are: Cooling - if the sensor temperature is higher then setpoint, Codis starts cooling the air. If the temeperature sensor is lower then the setpoint, Codis does not do anything Heating- if the sensor temperature is lower then setpoint, Codis starts heatingthe air. If the temeperature sensor is higherthen the setpoint, Codis does not do anything Cooling or Heating - using either manual button in Menu, or automatic changeover external RTD sensor or through CBMS device either is in cooling or heating mode Cooling and heating - device cools if sensor temperature is higher then setpoint and heats if sensor temperature is lower then setpoint 2017 products.koer.com Page 5 of 14

6 Ventilation - there is no temperature control, only control of humidity and air quality Press Save to confirm changes Step 4 Parameters 1 settings - Part I Cooling / Heating coil - If there are optional heat exchangers or modulating electric heaters, it is necessary to enable the analog output signal for the valve(s) through the Cooling / Heating Coil parameter Fan operating mode - A fan can be placed in series or in parallel with a VAV box. The Fan operating mode parameter is off by default. The parameter can be set to Series or Parallel depending on the configuration Series: If the fan is configured in series, the VAV damper actuator and fan are controlled according to temperature or air quality demand. The fan maximum and minimum speed can be adjusted in Parameters [5 / 5] Fan AQ PID and ECM voltage) 2017 products.koer.com Page 6 of 14

7 Parallel without heat exchanger: If the fan is configured in parallel, then the fan is used to recirculate warmer ceiling air. The parallel fan operates only when Heating is active and according to the 2017 products.koer.com Page 7 of 14

8 ambient temperature (the lower the ambient temperature, the higher the fan speed) Parallel with heat exchanger: VAV damper actuator will be controlled according to air quality demand. The fan and heat exchange valve will be controlled according to room air temperature Step 5 Parameters 1 settings - Part II Dehumdification: C35-VAV... can be configured to dehumidify a controlled zone with the dehumidification parameter. The options are: Enabled - The following system configuration is required to enable dehumidification: Control sequence is set to Cooling or Cooling and Heating ; or Cooling / Heating coil parameter is enabled; or The unit or system has a built in relative humidity sensor (optional) While operating in cooling mode, the valve of the heat exchanger will control relative humidity in line with each working modes humidity setpoints Disabled - Dehumidification will be disabled 2017 products.koer.com Page 8 of 14

9 Changeover signal: can be configured to be either Internal or external by CBMS input Occupied timer: The default duration for the occupancy timer is 60 minutes. To adjust the occupancy timer duration, enter screen 01/05 of the parameters menu and increase or decrease the number of minutes using the +/- buttons Press Save to confirm changes 2017 products.koer.com Page 9 of 14

Step 6 Parameters 02 settings Go to Parameters 2/6 menu VAV Voltage Output : To change analog output (AO1) voltage range from 0-10 V to 2 10 V and vice versa press the VAV voltage output button The

10 Step 6 Parameters 02 settings Go to Parameters 2/6 menu VAV Voltage Output : To change analog output (AO1) voltage range from 0-10 V to 2 10 V and vice versa press the VAV voltage output button The Proportional-Integral- Derivative controller (PID controller) calculates a difference between measured values and set points. The PID controller minimizes the difference between those values by adjusting openness of the valves, damper actuator or fan speed. Adjust PID gains according to each project s specifications Tuning a PID controller involves setting values of Proportional band(p-band), Integral time(i-time) or Derivative time(d-time) parameter values. If two-term (PI) or one-term (P) control is needed adjust unnecessary values to zero VAV Temp. PID: is VAV temeperature PID for regulating temperature control Use + and - buttons to increase or decrease values Press value button to enter Keyboard to input PID value number Press Save to confirm changes 2017 products.koer.com Page 10 of 14

Step 7 Parameters 03 settings Go to Parameters 3/6 menu VAV Air Quality: PID controller for fine tuning CO2 control Valve : PID controller for fine tuning Valve opening

settings Go to Parameters 4/6 menu Dehumdific. - PID controller for fine tuning Relative humidity control Fan Temp.

11 Step 7 Parameters 03 settings Go to Parameters 3/6 menu VAV Air Quality: PID controller for fine tuning CO2 control Valve : PID controller for fine tuning Valve opening control Use + and - buttons to increase or decrease values Press value button to enter Keyboard to input number Press Save to confirm changes Step 8 Parameters 04 settings Go to Parameters 4/6 menu Dehumdific. - PID controller for fine tuning Relative humidity control Fan Temp. - PID controller for fine tuning Fan temperature control Use + and - buttons to increase or decrease values Press value button to enter Keyboard to input number Press Save to confirm changes 2017 products.koer.com Page 11 of 14

Step 9 Parameters 05 settings VAV Air Quality: PID controller for fine tuning CO2 control ECM: The analog output signal for the EC motor can be configured with three parameters: ECM Min Off voltage:

12 Step 9 Parameters 05 settings VAV Air Quality: PID controller for fine tuning CO2 control ECM: The analog output signal for the EC motor can be configured with three parameters: ECM Min Off voltage: If this value is different from zero volts, adjust the ECM OFF voltage to value that will turn off the ECM fan. ECM MIN voltage: Defines the minimum signal value and the minimum speed of the fan (5 %). ECM MAX voltage: Defines the maximum signal value and the maximum speed of the fan (100 %). Use + and - buttons to increase or decrease values Press value button to enter Keyboard to input number Press Save to confirm changes 2017 products.koer.com Page 12 of 14

Current options: Brick Drywall Press Save to keep changes Step 11

13 Step 10 Parameters 06 setting Wall type: choose between type of wall where device is mounted. Current options: Brick Drywall Press Save to keep changes Step 11 Parameters 5 settings Insert wisdom here. This document was last generated on :29:50 PM products.koer.com Page 13 of 14

VAV Thermostat Controller Specification and Installation Instructions. Model TRO24T4XYZ1

VAV Thermostat Controller Specification and Installation Instructions. Model TRO24T4XYZ1 Model TRO24T4XYZ1 Description The TRO24T4XYZ1 is a combination controller and thermostat. The VAV Thermostat Controller is designed for simple and accurate control of any variable air volume box in a number