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028-0506-02_II-VZ8250_EN www.viconics.com 

January 2020

3

VZ8250  

Installation Guide 

]

1.  SAFETY INFORMATION

1.1 

IMPORTANT INFORMATION

Read these instructions carefully and look at the equipment to become familiar with the device before trying to install, operate, service 
or maintain it. The following special messages may appear throughout this bulletin or on the equipment to warn of  potential hazards or 
to call attention to information that clarifies or simplifies a procedure.

The addition of  either symbol to a “Danger” or “Warning” safety label indicates that an electrical hazard exists which will result 
in personal injury if  the instructions are not followed. 

This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow 
this symbol to avoid possible injury or death.

 DANGER

DANGER 

indicates a hazardous situation which, if  not avoided, 

will result in 

death

 

or serious injury.

 WARNING

WARNING 

indicates a hazardous situation which, if  not avoided, 

could result in 

death

 

or serious injury.

 CAUTION

CAUTION 

indicates a hazardous situation which, if  not avoided, 

could result in 

minor or moderate injury.

NOTICE

NOTICE is used to address practices not related to physical injury. The safety alert symbol shall not be used with this signal word.

1.2 

PLEASE NOTE

Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel. No responsibility is 
assumed by Viconics Technologies for any consequences arising out of  the use of  this material.

A qualified person is one who has skills and knowledge related to the construction, installation, and operation of  electrical equipment 
and has received safety training to recognize and avoid the hazards involved.

Summary of Contents for VZ8250

Page 1: ...VT8000 Room Controllers VZ8250 Installation Guide Variable Air Volume VAV Unit Version 2...

Page 2: ...RE INDEPENDENT NO FAN 7 4 TYPICAL APPLICATION PRESSURE INDEPENDENT PARALLEL FAN 8 5 TYPICAL APPLICATION PRESSURE DEPENDENT NO FAN 9 6 TERMINAL IDENTIFICATION 10 7 HOME SCREEN DISPLAY 13 8 HOW TO ENTER...

Page 3: ...ages that follow this symbol to avoid possible injury or death DANGER DANGER indicates a hazardous situation which if not avoided will result in death or serious injury WARNING WARNING indicates a haz...

Page 4: ...nown to the State of California to cause cancer and birth defects or other reproductive harm For more information go to www P65Warnings ca gov Failure to follow these instructions can result in birth...

Page 5: ...terior wall Do not install behind a door Do not install in areas with direct heat source Do not install near any air discharge grill Do not install in areas exposed to direct sunlight Ensure Room Cont...

Page 6: ...nsure the correct side of the base faces up 5 Pull the cables 6in 15cm out from wall 6 Align the base and mark the location of the two mounting holes on the wall 7 Install the anchors in the wall Figu...

Page 7: ...mmon RH BO8 Aux Heat UO9 Close Damp UO10 Open Valve UO11 0 10V Output UO12 0 10V Output 0 10V Analog Control 7 8 9 10 11 12 1 2 3 4 5 6 BASEBOARD 24V 24V Com 0 10V ANALOG HEATING COIL Com Input RC Inp...

Page 8: ...19 20 21 22 23 24 BACnet BACnet BACnet REF UI16 UI17 Common UI19 CS UI20 RS C Common UI22 SS UI23 UI24 0 10V Input 0 10V ANALOG HEATING COIL BASEBOARD 24V 24V Com Com Input RC Input RC 0 10V ANALOG A...

Page 9: ...FAN LO Low voltage TERMINAL BLOCK 13 14 15 16 17 18 19 20 21 22 23 24 BACnet BACnet BACnet REF UI16 UI17 Common UI19 CS UI20 RS C Common UI22 SS UI23 UI24 0 10V Input 1 2 3 4 5 6 BASEBOARD 24V 24V Com...

Page 10: ...18 or 21 C 24 V Common 24 V Common 10 UO10 0 10V Output Warning Floating duct reheat is not possible when Fan Type is ECM 6 2 AIR FLOW SENSOR PI ONLY Supported air flow sensor parameters Output voltag...

Page 11: ...18 or 21 C 24 V Common 24 V Common 11 UO11 0 10V Output Floating Actuator Terminal Name Connection 6 18 or 21 C 24 V Common 24 V Common 9 UO9 Close Actuator 11 UO11 Open Actuator Floating actuation ti...

Page 12: ...se Damper Actuator On Off or PWM Duct Heater Terminal Name Connection Required Settings 6 18 or 21 C 24 V Common 24 V Common Duct Heater Configuration On Off or PWM or Valve NC or Valve NO 12 UO12 24...

Page 13: ...e Time Occupancy Status System Status Up Arrow Raise Temperature Setpoint Actual Setpoint Room Indoor Temperature Room Indoor Humidity Outdoor Temperature Down Arrow Lower Temperature Setpoint Unoccup...

Page 14: ...ts For more information on using and configuring the functions of the HMI refer to the VZ8250 User Interface Guide 9 SET UP SCREEN DISPLAY Return to home screen 1 2 Setup Network Configuration Balanci...

Page 15: ...Pressure Dependent True air flow at various damper percentages will be measured and used to set the appropriate damper percentages for the air flow required for the zone Flow sensor PI only Damper Ca...

Page 16: ...esign 4 Calibrate sensor at Minimum airflow a On page 2 2 Balancing PI set the Damper Override to Minimum Flow The displayed Airflow Setpoint will use the value of Minimum Airflow b Wait for the Room...

Page 17: ...ts CFM Min 0 Max 20000 Airflow Setpoint AI350 R Measured calibrated airflow Units CFM Min 0 Max 10000 Minimum Airflow AV250 R W Minimum airflow supplied to the zone Units CFM Min 0 Max 10000 Default 5...

Page 18: ...l control 1 Min flow Force damper to maintain minimum airflow setpoint 2 Max cool Force damper to maintain maximum cooling airflow setpoint 3 Close Force damper closed 4 Reheat Force damper to maintai...

Page 19: ...esired position Minimum Maximum Cooling Maximum Heating or Maximum Reheat b Allow time for damper to reach defined position c Take reading of actual air flow using a calibrated Balometer d Compare act...

Page 20: ...tion AV253 R W Damper position during reheating Units Min 0 Max 100 Damper Override Force damper to selected position during balancing MV172 R W 0 None Default No damper override Damper under normal c...

Page 21: ...shows Room Controllers installed in ideal locations for two rooms The examination room shows one Room Controller installed adjacent to the door In this area of the room occupant traffic is high and e...

Page 22: ...ed opposite the door the PIR detection could fall outside the specified detection zone while at the same time most occupant movement would be not be lateral to the PIR thereby not respecting optimal c...

Page 23: ...l occupancy states transition 8000 with internal and or external motion sensors 8000 Occupancy State Occupied Stand by 8000 with door sensor internal and or external motion sensors 8000 Occupancy Stat...

Page 24: ...y saving from 10 30 by adjusting temperature set points in unoccupied zones during scheduled periods PIR can maximize your energy saving from 10 30 by adjusting temperature set points in unoccupied zo...

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