Viconics VT7600A, Installation Manual

Page 1: ...er Interface 12 User configuring instructions menu 12 Local keypad interface 13 Occupied setpoints adjustments 14 Dehumidification process 16 Installer Configuration Parameter Menu 21 Troubleshooting guide 32 Humidity Control 34 Humidity reset 34 High limit humidity sensor 34 Specifications 35 Drawing Dimensions 36 PIR Ready VT76x7 Series With Without Local Schedule With Humidification Dehumidific...

Page 2: ...be affected by direct sun radiation 5 Nothing should restrict vertical air circulation to the Terminal Equipment Controller Installation 1 Swing open the Terminal Equipment Controller PCB to the left by pressing the PCB locking tabs fig 2 2 Pull out cables 6 out from the wall 3 Wall surface must be flat and clean 4 Insert cable in the central hole of the base 5 Align the base and mark the location...

Page 3: ... Equipment Controller label the wires before removal of the Terminal Equipment Controller Electronic controls are static sensitive devices Discharge yourself properly before manipulating and installing the Terminal Equipment Controller A short circuit or wrong wiring may permanently damage the Terminal Equipment Controller or the equipment All VT7000 series Terminal Equipment Controllers are desig...

Page 4: ...scheduling of the Terminal Equipment Controller The scheduling will now be set as per the digital input The menu part related to scheduling is disabled and no longer accessible It provides low cost setback operation via occupancy sensor or from a dry contact RemOVR temporary occupancy contact Disables all override menu function of the Terminal Equipment Controller The override function is now cont...

Page 5: ...5 PIR Ready VT76x7 Series Installation Guide MODEL CHART ...

Page 6: ...ed with the following communication adapters o VCM7607V5000B Terminal Equipment Controller BACnet MS TP communication adapter o VCM7607V5000E Terminal Equipment Controller Echelon LonTalk communication adapter o VCM7000V5000W Terminal Equipment Controller wireless Zigbee communication adapter TERMINAL IDENTIFICATION AND FUNCTION Wiring Part Number VT7657B5x00 X VT7607B5x00 X Schedule Yes No Top le...

Page 7: ...ier output uses a half bridge rectifier Reference of the control signal is the common of the power supply of the Terminal Equipment Controller Terminal C Note 4 Electromechanical contacts are to be used with the digital inputs Electronic triacs cannot be used as mean of switching for the input The switched leg to the input for the input to activate is terminal C common Note 5 The transformer of th...

Page 8: ...8 PIR Ready VT76x7 Series Installation Guide TYPICAL APPLICATIONS ...

Page 9: ... sensor can be used for Remote return or room air humidity sensing with the sensor mounted on the wall VH2020W1000 VH2020D1000 remote duct mounted humidity sensor c w junction box This sensor can be used for Remote return air humidity sensing with the sensor mounted on the return air duct Supply air humidity sensor used as high limit protection VH2020W1000 Wiring example of remote room humidity se...

Page 10: ...d 1 2 0 0 p m Time Un o c c u p 1 2 0 0 p m Time Oc c u p i e d d a y Y N Oc c u p i e d 1 2 0 0 p m Time Un o c c u p 1 2 0 0 p m Time Oc c u p i e d d a y Y N Oc c u p i e d 1 2 0 0 p m Time Un o c c u p 1 2 0 0 p m Time Resume Occ Hold Uno Hold E x i t Y N Off Heat Cool Auto Ov e r r i d e s c h d Y N Re s u me s c h d Y N If status is Unoccupied If status is Temporary Occupied Time Occupied ho...

Page 11: ...ssociated functions such as mode lockouts are automatically disabled Alarms If alarms are detected they will automatically be displayed at the end of the status display scroll During an alarm message display the back lit screen will light up at the same time as the message and shut off during the rest of the status display Two alarms maximum can appear at any given time The priority for the alarms...

Page 12: ...erate in cooling mode When Y1 terminal operate in cooling mode When Y1 terminal operate in cooling mode and or economizer output is in function USER INTERFACE User configuring instructions menu The VT76x7 series of Terminal Equipment Controller feature an intuitive menu driven back lit LCD display that walks users through the configuring steps making the configuring process extremely simple This m...

Page 13: ...es when configuring the Terminal Equipment Controller The up arrow key is used to increase temperature setpoint and to adjust the desired values when configuring the Terminal Equipment Controller When left unattended for 45 seconds the display will resume automatic status display scrolling To turn on the back light press any key on the front panel The back lit display will turn off when the Termin...

Page 14: ...upied time is 11 59 PM There will be a 1 minute unoccupied period every night at 11 59 PM with this default configuration A Override an unoccupied period Override schd Y N This menu will appear only when the Terminal Equipment Controller is in unoccupied mode The unoccupied mode is enabled either by the internal timer scheduling or by a remote NSB contact via DI1 or DI2 If DI1 or DI2 is configured...

Page 15: ...be prompted with the present mode Heating or Cooling of the Terminal Equipment Controller and its setpoint The Up arrow key will increment the setpoint by 0 5 degree F or C The Down arrow key will decrement the setpoint by 0 5 degree F or C Press the Yes key to accept the new setpoint Local changes to the heating or cooling setpoints made by the user directly using the up or down arrow are tempora...

Page 16: ...tion demand and the fan is OFF the fan is first turned ON and the dehumidification output is then activated Other than having reach the dehumidification setpoint the following events can stop the dehumidification process at any time RH sensor is out of range System Mode is switched to Off Heat or System Mode Auto and effective mode at the Terminal Equipment Controller is Heat The room temp drops b...

Page 17: ...n mode operation Use to set value Yes key to confirm Fan mode On On fan mode Fan is on continuously even when system mode is OFF Fan mode Auto Automatic fan mode Fan cycles on a call for heating or cooling for both occupied unoccupied periods Fan mode Smart Smart fan mode During occupied periods fan is on continuously In unoccupied mode fan cycles on a call for heating or cooling This selection is...

Page 18: ...cupied time Will activate unoccupied setpoints Use to set value Yes key to confirm Typical examples of a 2 event office schedule Ex 1 Office building closed all weekend Event Period 1 Event 1 Period 1 Event 2 Occupied Unoccupied Setpoint Cool Heat Cool Heat Daily 72 F 70 F 80 F 62 F Occupancy Monday 7 00 AM 6 00 PM Day time only Tuesday 7 00 AM 6 00 PM Day time only Wednesday 7 00 AM 6 00 PM Day t...

Page 19: ...key to set new time value for each day Occupied 00 00 AM Use To set value Occupied 00 00 AM Use To set value Occupied 00 00 AM Use To set value Sets Event 1 Occupied time Will activate occupied setpoints Use to set value Yes key to confirm Unoccup 00 00 AM Use To set value Unoccup 00 00 AM Use To set value Unoccup 00 00 AM Use To set value Sets Event 2 Unoccupied time Will activate unoccupied setp...

Page 20: ... will set its schedule In the above example for Saturday the Terminal Equipment Controller will control to the occupied set point from 8 00 AM until 11 59 PM Since it is desired to be in occupied mode throughout the night then it is necessary to schedule the first event on Sunday at 12 00 AM The Terminal Equipment Controller will force a one minute unoccupied period for a one minute period between...

Page 21: ...user must scroll to the Schedule Hold menu and select the Schedule resume option Schedule uno hold Hold permanent unoccupied forces the Terminal Equipment Controller into a permanent unoccupied mode using the unoccupied setpoints All timed scheduling functions are by passed The PERMANENT UNOCCUPIED status will appear in the automatic status scroll To resume to regular scheduling user must scroll t...

Page 22: ... be used or displayed For BACnet MS TP models the valid range to is from 1 to 127 Default value of 254 disables BACnet communication for the Terminal Equipment Controller For wireless models valid range is 0 to 254 with a maximum of 30 Terminal Equipment Controllers per VWG PAN ID Personal Area Network Identification Default value 0 Range is 0 to 1000 Conditional parameter to Wireless models VT76x...

Page 23: ...dels VTR73xxX5x00W Entering a MAC address enables an automatic routine that automatically fetches all the required configuration properties of the current device from another already configured device and copies the same required configured property values If a value other than the default value of 255 is entered user will then be prompted to exit the Configuration Menu thus leaving all other para...

Page 24: ...unoccupied occupied setpoints for the amount of time set by parameter TOccTime temporary occupancy time When Override is enabled an Override status message will be displayed Filter a back lit flashing Filter alarm will be displayed on the Terminal Equipment Controller LCD screen when the input is energized Service a back lit flashing Service alarm will be displayed on the Terminal Equipment Contro...

Page 25: ...heating This can be used to sequence start up multiple units Terminal Equipment Controller in one location 10 to 120 seconds Frost pr Frost protection enabled Default value Off Off no room frost protection On room frost protection enabled in all system mode at 42 F 5 6 C Frost protection is enabled even in system Off mode Off or On On heat pump models the system mode will be forced to EMERGENCY mo...

Page 26: ...n the return and supply air feeds and is directly influenced by the supply air stream of the unit Value F scale Pband C scale Pband 2 2 F 1 1 C 3 3 F 1 7 C 4 4 F 2 2 C 5 5 F 2 8 C 6 6 F 3 3 C 7 7 F 3 9 C 8 8 F 4 4 C Anticycle Minimum on off operation time for stages Default value 2 minutes Minimum On Off operation time of cooling heating stages IMPORTANT anti short cycling can be set to 0 minutes ...

Page 27: ... For multi stage models cool cph applies to Y1 Y2 For heat pump models cool cph applies to Y1 Y2 in cooling and heating independently of the reversing valve position Minimum deadband Default value 2 0 F 1 1 C Minimum deadband value between the heating and cooling setpoints If modified it will be applied only when any of the setpoints are modified 2 3 or 4 F 1 0 to 2 0 C Fan cont Default value On F...

Page 28: ...tion Default value 0 0 F or C Offset that can be added subtracted to actual displayed room temperature 5 0 F 2 5 C Cal OS Outside air temperature sensor calibration Default value 0 0 F or C Offset that can be added subtracted to actual displayed outside air temperature 5 0 F 2 5 C H stage Number of heating stages Applicable to 2 stage models only Default value 2 stages Will revert the operation of...

Page 29: ... Disables cooling stage operation based on outdoor air temperature On economizer model free cooling will not be disabled by this function Function will only be enabled if OS outside air temperature sensor is connected From 40 F up to 95 F 40 C up to 35 C Unocc TM Unoccupied Timer value Default 0 5 hours Time delay between the moment where the Terminal Equipment Controller toggles from occupied to ...

Page 30: ...ontroller or the remote NSB contact if DI1 or DI2 is used When the system is in OFF mode the contact will remain in its unoccupied status independently of the occupied unoccupied schedule Configured Contact occupied status Contact unoccupied status N O Closed Opened N C opened Closed Prog rec Progressive recovery enabled Default value Off Progressive recovery is automatically disabled if DI 1 and ...

Page 31: ...mperature under which the dehumidification sequence is disabled Only valid if an outdoor air sensor is connected at the Terminal Equipment Controller or a network value is transmitted to the Terminal Equipment Controller From 40 F up to 122 F 40 C to 50 C Dhu LCK Dehumidification Lockout Functions Default value On Enables or disables the lockout functions for the dehumidification control process o...

Page 32: ...side air sensor is not connected or is shorted the Terminal Equipment Controller bypasses The heating lockout The cooling lockout The dehumidification lockout The humidity setpoint reset TROUBLESHOOTING GUIDE Symptom Possible Cause Corrective Action No display on the Terminal Equipment Controller Absent or incorrect supply voltage 1 Check power supply voltage between C RC to be from 19 30 VAC 2 Ch...

Page 33: ...ontroller will not call for cooling Wrong mode selected Select cooling mode Terminal Equipment Controller in Unoccupied mode Select Occupied Hold in Schedule hold or Override to force the Terminal Equipment Controller Occupied cooling setpoint Anti cycle delay active Wait the anti cycling period will end and the equipment will start Cooling setpoint is satisfied Lower the cooling setpoint Cooling ...

Page 34: ...he parameter RE Sp In the example Figure 8 RE Sp was set to 20 therefore the humidity setpoint dropped from 45 to 20 If you don t want to use this feature set the RE Sp parameter to 90 RH High limit humidity sensor The VT76x7 series includes a high limit sequence This allows the use of a remote 0 to 10 VDC humidity sensor to limit the humidity in the supply air If no sensor is detected at the HL c...

Page 35: ... 0 5 C 0 9 F 21 C 70 F typical calibrated 5 RH from 20 to 0 RH at 50 to 90 F 10 to 32 C 10 RH to 90 RH 15 RH to 95 RH Relay output 30 VAC 1 Amp Maximum 3 Amp In rush Analog 0 to10VDC into 2KΩ resistance min 3 typical 12 0 to 37 5 C 54 to 100 F 4 5 C to 32 C 40 F to 90 F 40 C to 50 C 40 F to 122 F Factory set Cooling Heating 1 1 C 2 F Relay dry contact only across C terminal to D1 Analog 0 to10VDC ...

Page 36: ...36 PIR Ready VT76x7 Series Installation Guide DRAWING DIMENSIONS Viconics Technologies Inc Tel Fax Toll free www viconics com ...