VT7600E Series RTU Terminal Equipment Controller with IAQ Control Installation Guide F o r C o m m e r c i a l H V A C A p p l i c a t i o n s J a n u a r y 1 7 .
NSTALLATION Remove the security screw on the bottom of Terminal Equipment Controller cover. Open unit by pulling on the bottom side of Terminal Equipment Controller (fig. 1). Remove wiring terminals from sticker. Please read the FCC ID and IC label installed in the cover upon removal of cover for the wireless products.
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10. Insert each wire according to wiring diagram. 11. Gently push excess wiring back into hole (fig. 3). 12. Re-Install wiring terminals in their correct locations (fig. 3). 13. Re-install the cover (top side first) and gently push extra wire length back into the hole in the wall.
HEORY OF PERATION The VT76X6E series uses a Viconics proprietary adaptive logic algorithm to control the space temperature. This algorithm controls the heating or air conditioning system to minimize overshoot while still providing comfort. It provides exceptional accuracy due to its unique PI time proportioning control algorithm, which virtually eliminates temperature offset associated with traditional, differential-based On-Off thermostats.
ODEL HART Network ready All Viconics VT7600 series Terminal Equipment Controllers are designed for stand-alone (Network Ready) operation. They can be fully integrated into your choice of automation systems using the available communication adapter options. If required, stand-alone (Network Ready) Terminal Equipment Controllers can be field retrofitted with the following communication adapters: VCM7600N5000B, Terminal Equipment Controller BACnet™...
ERMINAL DENTIFICATION AND UNCTION Terminal Description Terminal Use Identification 1 – Cool 2 Output for cooling / compressor stage number 2. 2 – Cool 1 Output for cooling / compressor stage number 1. 3 - Fan Output for the fan. Power supply of thermostat, hot side (Delivered 4 - 24 V ~ Hot from the RTU ).
YPICAL PPLICATIONS Main outputs wiring Wiring notes: Note 1: If the same power source is used for the heating stages, install jumper across RC & RH. Maximum current is 2.0 amps. Note 2: Economizer and all analog outputs and inputs use a half bridge rectifier. Reference of the control signal is the common of the power supply of the Terminal Equipment Controller.
Remote sensor accessories Model no. Description S2020E1000 Outdoor temperature sensor S2060A1000 Averaging temperature sensor S2000D1000 Duct mounted temperature sensor Remote mount temperature sensors use 10K NTC thermistor. Temperature vs. Resistance Chart for 10 Kohm NTC Thermistor = 10K±3% - B = 3975K±1.5%) 25°C 25/85°C...
S2020E1000; outdoor air temperature sensor This sensor can be used for: Outside air temperature sensing with the sensor installed directly exposed to the elements. Sensor uses a water resistant NEMA 4 ABS enclosure for outdoor applications. WIRING S2000D1000, S2060A1000 and S2020E1000 Remote wiring 1 sensor Remote wiring 4 sensors 10 K...
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Outdoor air temperature Outdoor air temperature display is only enabled when outdoor air temperature sensor is connected. A maximum range status display of 50 °C ( 122 °F ) indicates a shorted sensor. Associated functions, such as mode lockouts and economizer function are automatically disabled.
SER INTERFACE When any of the fan is ON, the FAN LED will illuminate When heating is ON, the HEAT LED will illuminate When cooling is ON, the COOL LED will illuminate User configuring instructions menu The VT76X6E series of controllers feature an intuitive, menu-driven, back-lit LCD display that walks users and installers through the configuring steps, making the configuring process extremely simple.
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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 automatically after 45 seconds. Sequence of user menu: Override System mode Schedules...
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COOLING HEATING COOLING HEATING °F OR °C SETPOINT SETPOINT SETPOINT SETPOINT DISPLAY OCCUPIED OCCUPIED UNOCCUPIED UNOCCUPIED SETTING MODE MODE MODE MODE No next No next No next No next No next Cooling Heating Unocc CL Unocc HT °F or °C Yes down...
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E) Fan mode setting Fan mode set Y/N This section of the menu is permits the setting of the fan mode operation. Use ▲▼ to set value, Yes key to confirm Fan mode On fan mode Fan is on continuously, even when system mode is OFF. Automatic fan mode Fan mode Fan cycles on a call for heating or cooling for both occupied &...
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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 Cool Heat Cool Heat Daily Setpoint 72 °F 70 °F 80 °F 62 °F Occupancy Monday...
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G) Schedule set (4 events) Schedule This section of the menu permits the user to set the whether 2 or 4 events is needed. Each day can be tailored to specific schedules if needed. 4 events can be scheduled per day. ...
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Ex. #1 Four event retail establishment schedule Period 1 - Period 1 - Period 2 - Period 2 - Event Event 1 Event 2 Event 3 Event 4 Setpoint Occupied Unoccupied Occupied Unoccupied Cool Heat Cool Heat Cool Heat Cool Heat Daily Occupancy...
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H) Clock/Day Settings Clock This section of the menu permits the user to set the time and day. Time setting Day setting Time format setting No next No next Time 12/24hrs No = exit Yes down Yes down Yes down ...
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This parameter (Personal Area Network Identification) is used to link specific Terminal Equipment Controllers to a single specific Viconics wireless gateway ( VWG ) For every Terminal Equipment Controller reporting to a gateway ( maximum of 30 Terminal Equipment Controllers per...
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SAME channel value both at the gateway and the Terminal Equipment Controller(s). Viconics recommends using only the usage of channels 15 and 25 only. The default value of 10 is NOT a valid channel. The...
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USER KEY FUNCTIONS pwr del On initial power up of the Terminal Equipment Controller (each time 24 VAC power supply is removed & re-applied) Power-up delay there is a delay before any operation is authorized (fan, cooling or heating). This can be used to sequence start up Default value = 10 seconds multiple units / Terminal Equipment Controller in one location.
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Pband Adjust the proportional band used by the Terminal Proportional Band setting Equipment Controller PI control loop. Default value 2 = 2.0 °F ( 0.6 °C ) Note that the default value of 2.0 °F ( 1.1 °C ) gives satisfactory operation in most normal installation cases.
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cool cph Will set the maximum number of cooling stage cycles per Cooling stages cycles per hour hour under normal control operation. It represents the Default value = 4 C.P.H. maximum number of cycles that the equipment will turned on and off in one hour. Note that a higher C.P.H will represent a higher accuracy of control at the expense of wearing mechanical components faster.
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Cal OS Offset that can be added/subtracted to actual displayed Outside air temperature sensor outside air temperature calibration ± 5.0 °F ( ± 2.5 °C ) Default value = 0.0 °F or °C H stage Will revert the operation of 2 stages thermostat to single Number of heating stages.
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2/4event 2 events, will set up scheduling for the following Number of events configuration Event 1 is for Occupied setpoints Default value = 2 event Event 2 is for Unoccupied setpoints 4 events, will set up scheduling for the following Event 1 is for Occupied setpoints Event 2 is for Unoccupied setpoints Event 3 is for Occupied setpoints...
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C mech In Cooling mode. Mechanical cooling allowed Allows the operation of the mechanical cooling if the Default value = Off free cooling ( economizer ) cannot maintain the cooling setpoint. Off Typically applies when the MS ( mixed air temperature sensor ) is installed after the mechanical cooling refrigeration coils.
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Min Pos Minimum fresh air damper position. Effective only in Occupied mode (Fan is ON). This value is also used to Minimum Fresh Air determine the fresh air damper position based on the Damper/Economizer Position Min/Max CO and Min/Max Pos values set. See Fresh Default value = 0% Air Damper Position section for more details.
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Max CO Maximum CO Level allowed. Effective only in Occupied mode (Fan is ON). This value is used to Maximum CO Level determine the fresh air damper position based on the Default value = 1200 ppm Min/Max CO and Min/Max Pos values set. See Fresh Air Damper Position section for more details.
RESH AMPER ONTROL EQUENCES The fresh air damper can be controlled through more than one sequence to achieve different control strategies such as free cooling (economizer mode), minimum fresh air control and CO level control. Here are the control sequences available: Note: For the sequences mentioned below, the following conditions must be met in order for the sequences to be performed as stated: Max Pos parameter value must be greater than Min Pos Parameter value.
Economizer Mode and Fresh Air Measurement Station If the fresh air damper is to be used for both free cooling and minimum fresh air volume control (economizer mode and fresh air measurement station, but without CO level control), only the Min FA parameter and the free cooling sequence will be active. The FA Range parameter should be set to a value higher than 0 CFM (0 CFM disables the fresh air control).
Economizer Mode and CO Level Control If the fresh air damper is to be used for both free cooling and CO level control (economizer mode and CO level control, but without fresh air measurement station), only the Min Pos, Max Pos, Min CO and Max CO parameters as well as the free cooling sequence will be active.
Economizer Mode, CO Level Control and Fresh Air Measurement Station If the fresh air damper is to be used for both free cooling and CO level control with a fresh air measurement station, only the Min FA, Max FA, Min CO and Max CO parameters as well as the free cooling sequence will be active.
PECIFICATIONS Terminal Equipment Controller power requirements: 19-30 VAC 50 or 60 Hz; 2 VA Class 2 Operating conditions: 0 °C to 50 °C ( 32 °F to 122 °F ) 0% to 95% R.H. non-condensing Storage conditions: -30 °C to 50 °C ( -22 °F to 122 °F ) 0% to 95% R.H.
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