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Viconics Zoning System Application Guide

VZ7200F5x00W and VZ7656B1000W Thermostats

Wireless_Zoning_System_Guide-E10

(028-6020 R1 Issue Date: July 13, 2010)

Summary of Contents for VZ7200F5x00W

Page 1: ...1 Viconics Zoning System Application Guide VZ7200F5x00W and VZ7656B1000W Thermostats Wireless_Zoning_System_Guide E10 028 6020 R1 Issue Date July 13 2010...

Page 2: ...00W operation A Demand based heating and cooling systems B Overrides and user zone interface lockouts C Zone setpoint limits D Heating and cooling weight zone selection E Minimum maximum and maxheatfl...

Page 3: ...ostats but not included 24 Vac power supply Dedicated to a single zone or many zones An analog 0 to 10 Vdc pressure dependent actuator Terminal reheat if required by the design Proper wiring of all co...

Page 4: ...RTU thermostat please refer and read the VZ76xx Product Guide Installation and commissioning information is available on document LIT VZ7656_W Exx PIR cover installation information is available on do...

Page 5: ...control system will attempt to deliver the loads required by master demanding zones by distributing the total available capacity of the installed equipment to the required demanding areas If the equip...

Page 6: ...ll thermostats 1C Local Zone with Terminal Reheat or without Terminal Reheat Including or excluding use of terminal reheat is dictated by design criteria s of the installer The use of terminal reheat...

Page 7: ...o the zone directly from the supply to the return on a pressure rise when the VAV zone dampers are closing The by pass damper should be sized to allow at least 70 to 80 of the nominal airflow of the R...

Page 8: ...ir or cold air to satisfy the current zone demand point in time The following is an example of a RTU system mode calculation based on highest average of the three highest demands or the average of the...

Page 9: ...Voting Zone 3 Voting Zone 4 Voting Zone 5 RTU Control Type Current heat demand Current heat demand Current heat demand Current heat demand Current heat demand Highest Average of 3 highest Average of 5...

Page 10: ...hat have their function locked out will display a keypad lock message on the zone thermostat display If a global override is required for the whole system and all zones return to occupied mode then th...

Page 11: ...nts of the total MAX CFM of the equipment then for sure this zone needs to be master to the system Zones or areas that are subject to temporarily larger occupancy need to be part of demand calculation...

Page 12: ...nd energy consumption Adding many master voting zones including problematic ones to an RTU thermostat will provide better comfort at the expense of higher energy consumption Restricting the number of...

Page 13: ...irectly move from 25 to a 75 position As soon as BO5 is de energized the damper will move back to 25 opening 1 10 seconds for Solid state relays Set to any value superior to the current selected minim...

Page 14: ...60F or when the set point is at least 7 8 F lower than the current room temperature This will drive the VAV zone to its minimum value 5 Set the Max Pos configuration parameter to the desired value as...

Page 15: ...ive Infra Red Motion Detector Cover PIR The Viconics zone thermostats are compatible with the new Viconics PIR Passive Infra Red cover accessory Thermostats equipped with a PIR cover provide advanced...

Page 16: ...mances and control sequences much closer to what is normally found in DDC application specific control devices The operation of the RTU thermostat is linked with the operation of the attached zone the...

Page 17: ...occupancy command This will disable the local schedule occupancy function to the zones For more information on BACnet please refer to global override section of the zoning system integration guide The...

Page 18: ...ly set to keep heating or cooling equipment cycling to a minimum It is the responsibility of the installer to decide if priority of the system will be given to comfort or not The adjustments for both...

Page 19: ...peration The RTU thermostat has a built in static pressure control loop with an analog 0 to 10 Vdc by pass damper output In order to operate the static pressure control loop needs to have a static pre...

Page 20: ...long with ZigBee s Network and Application Support Layer provide Low cost installation deployment Ease of implementation Reliable data transfer Short range operation Very low power consumption Appropr...

Page 21: ...at s offline VZ76xx RTU thermostat is the network coordinator Range of PAN ID on all thermostats to use 251 to 500 This range is reserved for stand alone system operation Examples Notes Each system wi...

Page 22: ...iver is the network coordinator Any thermostats VZ72 s VZ76xx RTU s or any VT7xxx wireless thermostats act as routers Range of PAN ID on all thermostats to use 1 to 250 Reserved for networked system o...

Page 23: ...y interfere with other channel selections allowed by 802 15 4 Channels 11 to 14 16 to 24 2 The maximum distance between each thermostat node should be 100 feet 30 M or less between two thermostat node...

Page 24: ...or NS near the center of all associated VZ72xx zone thermostats installed 6 Always try to locate the coordinator VZ76xx for SA or VWG and Jace driver for NS near or in the line of sight to as many wir...

Page 25: ...S or Networked Systems applications where the VWG and Jace Driver is used as a coordinator 1 x 200ms short blink Power on 2 x 200ms short blinks Power on Communicating with thermostat base 3 x 200ms s...

Page 26: ...s expected then proper system commissioning should be done at all levels A zoning system has a huge dependency on the demand and response being fully functional both at the RTU and the zone level 5A P...

Page 27: ...TU on board economizer operation 5C Operational System Checklist It is recommended to keep a checklist of all milestones and configuration settings during start up This list should be kept as a refere...

Page 28: ...re Communication with zones is active Status LED manual scroll display Local time clock set Local schedule set Local system mode set to Auto System On Outdoor air sensor properly connected and display...

Page 29: ...zone thermostats If using a single 24 Vac for each zone thermostat Use a 20 VA or more Class2 self protected transformer to power all components attached to the zone thermostat Be sure to respect the...

Page 30: ...are mandatory 6C Balancing and Capacity It is not the mandate of a zoning control system to correct for an incorrect mechanical layout or improper load calculations of the mechanical zoning equipment...

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