Remove the security screw on the bottom of Terminal Equipment Controller cover.
Location
Installation
If replacing an existing Terminal 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 designed for use as operating controls only and are not safety devices. These instruments have undergone rigorous tests and verification prior to shipping to ensure proper and reliable operation in the field. Whenever a control failure could lead to personal injury and/or loss of property, it becomes the responsibility of the user/installer / electrical system designer to incorporate safety devices (such as relays, flow switch, thermal protections, etc…) and/or an alarm system to protect the entire system against such catastrophic failures. Tampering with the devices or unintended application of the devices will result in a void of warranty.
THEORY OF OPERATION
The VT7600 uses a Viconics proprietary adaptive logic algorithm to control the space temperature. This algorithm controls the heating/air conditioning system to minimize overshoot while still providing comfort. It provides exceptional accuracy due to its unique Pl time proportioning control algorithm, which virtually eliminates temperature offset associated with traditional, differential-based on/off Terminal Equipment Controllers.
Heat pump model-specific features
Network ready
| Multistage | 1H / 1C | Heat Pump | |||||||
| Part Number | VT7656B | VT7605B | VT7652B | VT7600B | VT7652A | VT7600A | Part Number | VT7652H | VT7600H |
| Schedule | Yes | No | Yes | No | Yes | No | Schedule | Yes | No |
| Top left terminal block | Top left terminal block | ||||||||
| Y2 | X | X | X | X | Y2 | X | X | ||
| Y1 | X | X | X | X | X | X | Y1 | X | X |
| G | X | X | X | X | X | X | G | X | X |
| RC | X | X | X | X | X | X | RC | X | X |
| C | X | X | X | X | X | X | C | X | X |
| Top right terminal | Top right terminal block | ||||||||
| RH | X | X | X | X | X | X | RH | X | X |
| W1 | X | X | X | X | X | X | W1 | X | X |
| W2 | X | X | X | X | O/B | X | X | ||
| Bottom terminal block | Bottom terminal block | ||||||||
| Econo | X | X | |||||||
| Aux | X | X | X | X | X | X | Aux | X | X |
| DI1 | X | X | X | X | X | X | DI1 | X | X |
| DI2 | X | X | X | X | X | X | DI2 | X | X |
| RS | X | X | X | X | X | X | RS | X | X |
| Scom | X | X | X | X | X | X | Scom | X | X |
| OS | X | X | X | X | X | X | OS | X | X |
| MS | X | X | X | X | X | X | MS | X | X |
Screw terminal arrangement
Main outputs wiring
Wiring notes:
TYPICAL APPLICATIONS
| MODEL NO. | DESCRIPTION |
| S3010W1000 | Wall-mounted temperature sensor |
| S3020W1000 | Wall-mounted temperature sensor+override button and occupancy status |
| S2020E1000 | Outdoor temperature sensor |
| S2060A1000 | Averaging temperature sensor |
| S2000D1000 | Duct-mounted temperature sensor |
Remote mount temperature sensors use a 10K NTC thermistor.
This sensor can be used for:
WIRING EXAMPLE OF SINGLE REMOTE ROOM SENSOR:
Temperature vs. resistance chart for 10 Kohm NTC thermistor
| ºC | ºF | Kohm |
| -40 | -40 | 324.3197 |
| -39 | -38 | 303.6427 |
| -38 | -36 | 284.4189 |
| -37 | -35 | 266.5373 |
| -36 | -33 | 249.8958 |
| -35 | -31 | 234.4009 |
| -34 | -29 | 219.9666 |
| -33 | -27 | 206.5140 |
| -32 | -26 | 193.9703 |
| -31 | -24 | 182.2686 |
| -30 | -22 | 171.3474 |
| -29 | -20 | 161.1499 |
| -28 | -18 | 151.6239 |
| -27 | -17 | 142.7211 |
| -26 | -15 | 134.3971 |
| -25 | -13 | 126.6109 |
| -24 | -11 | 119.3244 |
| -23 | -9 | 112.5028 |
| -22 | -8 | 106.1135 |
| -21 | -6 | 100.1268 |
| ºC | ºF | Kohm |
| -20 | -4 | 94.5149 |
| -19 | -2 | 89.2521 |
| -18 | 0 | 84.3147 |
| -17 | 1 | 79.6808 |
| -16 | 3 | 75.3299 |
| -15 | 5 | 71.2430 |
| -14 | 7 | 67.4028 |
| -13 | 9 | 63.7928 |
| -12 | 10 | 60.3980 |
| -11 | 12 | 57.2044 |
| -10 | 14 | 54.1988 |
| -9 | 16 | 51.3692 |
| -8 | 18 | 48.7042 |
| -7 | 19 | 46.1933 |
| -6 | 21 | 43.8268 |
| -5 | 23 | 41.5956 |
| -4 | 25 | 39.4921 |
| -3 | 27 | 37.5056 |
| -2 | 28 | 35.6316 |
| -1 | 30 | 33.8622 |
| ºC | ºF | Kohm |
| 0 | 32 | 32.1910 |
| 1 | 34 | 30.6120 |
| 2 | 36 | 29.1197 |
| 3 | 37 | 27.7088 |
| 4 | 39 | 26.3744 |
| 5 | 41 | 25.1119 |
| 6 | 43 | 23.9172 |
| 7 | 45 | 22.7861 |
| 8 | 46 | 21.7151 |
| 9 | 48 | 20.7004 |
| 10 | 50 | 19.7390 |
| 11 | 52 | 18.8277 |
| 12 | 54 | 17.9636 |
| 13 | 55 | 17.1440 |
| 14 | 57 | 16.3665 |
| 15 | 59 | 15.6286 |
| 16 | 61 | 14.9280 |
| 17 | 63 | 14.2629 |
| 18 | 64 | 13.6310 |
| 19 | 66 | 13.0307 |
| ºC | ºF | Kohm |
| 20 | 68 | 12.4601 |
| 21 | 70 | 11.9177 |
| 22 | 72 | 11.4018 |
| 23 | 73 | 10.9112 |
| 24 | 75 | 10.4443 |
| 25 | 77 | 10.0000 |
| 26 | 79 | 9.5754 |
| 27 | 81 | 9.1711 |
| 28 | 82 | 8.7860 |
| 29 | 84 | 8.4190 |
| 30 | 86 | 8.0694 |
| 31 | 88 | 7.7360 |
| 32 | 90 | 7.4182 |
| 33 | 91 | 7.1150 |
| 34 | 93 | 6.8259 |
| 35 | 95 | 6.5499 |
| 36 | 97 | 6.2866 |
| 37 | 99 | 6.0351 |
| 38 | 100 | 5.7950 |
| 39 | 102 | 5.5657 |
| ºC | ºF | Kohm |
| 40 | 104 | 5.3467 |
| 41 | 106 | 5.1373 |
| 42 | 108 | 4.9373 |
| 43 | 109 | 4.7460 |
| 44 | 111 | 4.5631 |
| 45 | 113 | 4.3881 |
| 46 | 115 | 4.2208 |
| 47 | 117 | 4.0607 |
| 48 | 118 | 3.9074 |
| 49 | 120 | 3.7607 |
| 50 | 122 | 3.6202 |
| 51 | 124 | 3.4857 |
| 52 | 126 | 3.3568 |
| 53 | 127 | 3.2333 |
| 54 | 129 | 3.1150 |
| 55 | 131 | 3.0016 |
| 56 | 133 | 2.8928 |
| 57 | 135 | 2.7886 |
| 58 | 136 | 2.6886 |
| 59 | 138 | 2.5926 |
S3010W1000 remote wall-mounted temperature sensor, dip switch location.
S2000D1000, remote duct-mounted temperature sensor c/w junction box.
This sensor can be used for:
S2060A1000, remote averaging duct mounted temperature sensor c/w junction box.
This sensor can be used for:
S2020E1000, outdoor air temperature sensor
This sensor can be used for:
User menu flow chart:
NOTE: Prompts may not all be present depending on the model selected.
Status display
The Terminal Equipment Controller features a two-line, eight-character display. There is a low-level backlight level that is always active and can only be seen at night. When left unattended, the Terminal Equipment Controller has an auto-scrolling display that shows the actual status of the system.
Each item is scrolled one by one with the backlighting in low-level mode. Pressing any key will cause the backlight to come on to a high level. The manual scroll of each menu item is achieved by pressing the Yes (scroll) key repetitively. The last item viewed will be shown on the display for 30 seconds before returning to automatic scrolling. Temperature is automatically updated when scrolling is held.
Sequence of auto-scroll status display:
| ROOM TEMPERATURE | CLOCK STATUS | SYSTEM MODE | SCHEDULE STATUS | OUTDOOR TEMPERATURE | ALARMS |
| x.x °C or °F XX % RH | Monday 12:00 AM | Sys mode auto | Occupied | Outdoor x.x °C or°F | Service |
| Sys mode off | Occupied hold | Frost ON | |||
| Sys mode heat | Unoccup | SetClock | |||
| Sys mode cool | Filter | ||||
| Sys mode emergency | Fan lock |
Outdoor air temperature
Alarms
| Frost ON | Indicates that the heating is energized by the low-limit frost protection room temperature setpoint 5.6 °C ( 42 °F) |
| SetClock | Indicates that the clock needs to be reset. There has been a power failure which has lasted longer than 6 hours |
| Service | Indicates that there is a service alarm as per one of the configurable digital inputs ( DI1 or DI2 ) |
| Filter | Indicates that the filters are dirty as per one of the configurable digital inputs ( DI1 or DI2 ) |
| Fan lock | Indicates that the heating and cooling actions are locked out due to a defective fan operation |
Three status LEDs on the Terminal Equipment Controller cover are used to indicate the status of the fan, a call for heat, or a call for cooling.
| LED OPERATION | HEATPU P MODELS VT76XXH | MULTISTAGE AND SINGLE-STAGE M DELS VT7600A, VT7652A, VT7600 & VT7652B | MULTISTAGE ECONOMIZER MODELS VT7605B & VT7656B |
| Fan LED on | When the G Fan terminal operates | When the G Fan terminal operates | When the G Fan terminal operates |
| Heating LED on | When Y1 and / or W1 terminal(s) operate in heating mode | When W1 terminal operate in heating mode | When W1 terminal operate in heating mode |
| Cooling LED on | When the Y1 terminal operates in cooling mode | When the Y1 terminal operates in cooling mode | When the Y1 terminal operates in cooling mode and or economizer output is in function |
User configuring instructions menu
The VT7600 series of Terminal Equipment Controller features an intuitive, menu-driven, back-lit LCD display that walks users through the configuring steps, making the configuring process extremely simple. This menu is typically accessed by the user to set the parameters such as temperature and time events, system mode, fan mode, etc.
It is possible to bring up the user menu at any time by depressing the MENU key. The status display automatically resumes after exiting the user-configuring menu. If the user pauses at any given time during configuring, Auto Help text is displayed to help and guide the user through the usage and configuring of the Terminal Equipment Controller.
Ex.: Press the yes key to change the cooling temperature setpoint
Use the up or down arrow to adjust the cooling setpoint
Local keypad interface
Each of the sections in the menu is accessed and configured using 5 keys on the Terminal Equipment Controller cover.
The priority for the alarms is as follows:
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 Terminal Equipment Controller is left unattended for 45 seconds.
Sequence of user menu:
| OVERRIDE RESUME | TEMPERATURE SETPOINTS | SYSTEM MODE SETTING | FAN MODE SETTING | SCHEDULES SETTING | CLOCK SETTING | SCHEDULE HOLD |
| Override schd Y/N | Temperature Set Y/N | Sys mode set Y/N | Fan mode set Y/N | Schedule set Y/N | Clock set Y/N | Schedule hold Y/N |
| Appears only in unoccupied mode | Appears only on stand-alone (Network Ready) models | |||||
Occupied setpoints adjustments
There is a default profile set in the Terminal Equipment Controller from the factory. This enables the Terminal Equipment Controller to operate as a non-scheduling unit in day mode operation at start up.
| DEFAULT TEMPERATURE SETPOINTS: |
| Occupied cooling setpoint = 24 °C (75 °F) |
| Occupied heating setpoint = 22 °C (72 °F) |
| Unoccupied cooling setpoint = 28 °C (82°F) |
| Unoccupied heating setpoint = 18 °C (65°F) |
| Fahrenheit scale |
| Setpoint type = permanent |
| DEFAULT MODES: |
| System mode = Auto |
| Fan mode = Smart (for models with a communication module or scheduling network-ready models) Fan mode = Auto (for non-scheduling network-ready models) |
| DEFAULT SCHEDULES: |
| Monday through Sunday |
| Occupied time is: 12 00 AM |
| Unoccupied 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 to operate as a remote temporary override contact, this menu will be disabled.
Answering yes to this prompt will cause the Terminal Equipment Controller to go into occupied mode for an amount of time equal to the parameter “TOccTime” (1 to 12 hours).
B) Resume regular scheduling (Cancel ovrd Y/N)
This menu does not appear in regular operation. It will appear only when the Terminal Equipment Controller is in Unoccupied override mode. Answering “Yes” to this question will cause the Terminal Equipment Controller to resume the regular setpoints & scheduling.
C) Temperature setpoints (Permanent setpoint changes Temperature= set Y/N)
This menu permits the adjustment of all permanent temperature setpoints (occupied and unoccupied) as well as the desired temperature units (°F or °C). Permanent setpoints are written to RAM and EEPROM.
| COOLING SETPOINT OCCUPIED MODE | HEATING SETPOINT OCCUPIED MODE | COOLING SETPOINT UNOCCUPIED MODE | HEATING SETPOINT UNOCCUPIED MODE | °F OR °C DISPLAY SETTING |
| Cooling set? Y/N | No next ® Yes down ¯ | Heating set? Y/N | No next ® Yes down ¯ | Unocc CL set? Y/N | No next ® Yes down ¯ | Unocc HT set? Y/N | No next ® Yes down ¯ | °F or °C set? Y/N | No next ® Yes down ¯ |
| Cooling 70.0 °F | Use ▲▼ To set value | Heating 68.00 °F | Use ▲▼ To set value | Unocc CL 80.0 °F | Use ▲▼ To set value | Unocc HT 60.0 °F | Use ▲▼ To set value | Units °F | Use ▲▼ To set value |
Temporary setpoint changes
D) System mode setting (Sys mode set Y/N)
This menu is accessed to set the system mode operation. Use ▲▼ to set value, Yes key to confirm
| Sys mode auto | Automatic mode Automatic changeover mode between heating and cooling operation |
| Sys mode cooling | Cooling mode Cooling operation mode only |
| Sys mode heating | Heating mode Heating operation mode only |
| Sys mode emergency | Emergency heat mode ( heat pump models only ) Forced auxiliary heat operation mode only |
| Sys mode off | Off mode Normal cooling or heating operation disabled If enabled in installer parameters, only the automatic heating frost protection at 50 °F ( 10 °C ) is enabled |
E) Fan mode setting (Fan mode set Y/N)
This section of the menu permits the setting of the fan mode operation.
Use ▲▼ to set value, Yes key to confirm
| Fan mode On | On fan mode The fan is on continuously, even when the 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, the fan is on continuously. In unoccupied mode, the fan cycles on a call for heating or cooling. This selection is available on all models with a communication module, on all stand-alone (Network Ready) scheduling models or if DI1 or DI2 is set to RemNSB on stand-alone non-scheduling models. |
F) Schedule set (2 events)
Scheduling can have 2 or 4 events per day. This is set in the configuration menu as per parameter (2/4event)
Schedule set Y/N
This section of the menu permits the user to set whether 2 or 4 events is needed.
Each day can be tailored to specific schedules if needed.
| MONDAY TIMER SCHEDULE SET | TUESDAY TIMER SCHEDULE SET | WEDNESDAY TIMER SCHEDULE SET | OTHER DAYS ARE IDENTICAL |
| Monday set? Y/N | No next ® Yes down ¯ | Tuesday set? Y/N | No next ® Yes down ¯ | Wednesda set? Y/N | No next ® Yes down ¯ | Selects the day to be scheduled or modified |
Yes key to access day scheduling, No key to jump to next day
| Occupied Day? Y/N | No next ® Yes down ¯ | Occupied Day? Y/N | No next ® Yes down ¯ | Occupied Day? Y/N | No next ® Yes down ¯ | Yes = Daily schedules will be accessed No = Unoccupied mode all day |
Yes key to access day scheduling, No key to jump to next day
| Copy Y/N Previous | Yes next ® No down ¯ | Copy Y/N Previous | Yes next ® No down ¯ | Yes = Will copy previous day schedule No = Daily schedules will be accessed |
Yes key to copy previous day, No 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 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 72 °F | Heat 70 °F | Cool 80 °F | Heat 62 °F |
| Monday | 7.00 AM | 6.00 PM | ||
| Tuesday | 7.00 AM | 6.00 PM | ||
| Wednesday | 7.00 AM | 6.00 PM | ||
| Thursday | 7.00 AM | 6.00 PM | ||
| Friday | 7.00 AM | 6.00 PM | ||
| Saturday | 12.00 PM * | 12.00 PM * | ||
| Sunday | 12.00 PM * | 12.00 PM * | ||
| Daily Occupancy |
| Day time only |
| Day time only |
| Day time only |
| Day time only |
| Day time only |
| Unoccupied |
| Unoccupied |
Scheduling consecutive events to the same time will cause the Terminal Equipment Controller to choose the last event as the time at which it will set its schedule. In the above example, the Terminal Equipment Controller will control to the unoccupied set point until 7:00 AM Monday.
Ex. #2 Commercial building which is occupied all weekend
| Event | Period #1 – Event #1 | Period #1 – Event #2 | ||
| Occupied | Unoccupied | |||
| Setpoint | Cool 72 °F | Heat 70 °F | Cool 80 °F | Heat 62 °F |
| Monday | 8.00 AM | 5.00 PM | ||
| Tuesday | 8.00 AM | 5.00 PM | ||
| Wednesday | 8.00 AM | 5.00 PM | ||
| Thursday | 8.00 AM | 5.00 PM | ||
| Friday | 8.00 AM | 5.00 PM | ||
| Saturday | 12.00 AM ** | 11.59 PM ** | ||
| Sunday | 12.00 AM ** | 11.59 PM ** | ||
| Daily Occupancy |
| Day time only |
| Day time only |
| Day time only |
| Day time only |
| Day time only |
| Occupied |
| Occupied |
To schedule a day as occupied for 24 hours, set that day occupied time to 12:00 AM and Unoccupied time to 11:59 PM There will be a 1-minute unoccupied period every night at 11:59 p.m. with this schedule configuration.
Note: 12:00 PM = Noon 12:00 AM = Midnight
G) Schedule set (4 events) Schedule set Y/N
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.
| Monday timer Schedule set | Tuesday timer Schedule set | Wednesday timer Schedule set | Other days are identical |
| Monday set? Y/N | No next ® Yes down ¯ | Tuesday set? Y/N | No next ® Yes down ¯ | Wednesda set? Y/N | No next ® Yes down ¯ | Selects the day to be scheduled or modified |
Yes key to access day scheduling, No key to jump to next day
| Occupied Day? Y/N | No next ® Yes down ¯ | Occupied Day? Y/N | No next ® Yes down ¯ | Occupied Day? Y/N | No next ® Yes down ¯ | Yes = Daily schedules will be accessed No = Unoccupied mode all day |
Yes key to access day scheduling, No key to jump to next day
| Copy Y/N Previous | Yes next ® No down ¯ | Copy Y/N Previous | Yes next ® No down ¯ | Yes = Will copy previous day schedule No = Daily schedules will be accessed |
Yes key to copy previous day, No 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 setpoints |
Use ▲▼ to set value, Yes key to confirm
| Occupie2 00:00 AM | Use ▲▼ To set value | Occupie2 00:00 AM | Use ▲▼ To set value | Occupie2 00:00 AM | Use ▲▼ To set value | Sets Event # 3 Occupied time Will activate occupied setpoints |
Use ▲▼ to set value, Yes key to confirm
| Unoccup2 00:00 AM | Use ▲▼ To set value | Unoccup2 00:00 AM | Use ▲▼ To set value | Unoccup2 00:00 AM | Use ▲▼ To set value | Sets Event # 4 Unoccupied time Will activate unoccupied setpoints |
Use ▲▼ to set value, Yes key to confirm
Ex. #1 Four event retail establishment schedule
| Event | Period 1 – Event 1 | Period 1 – Event 2 | Period 2 – Event 3 | Period 2 – Event 4 | |||||
| Setpoint | Occupied | Unoccupied | Occupied | Unoccupied | |||||
| Cool 72°F | Heat 70°F | Cool 80°F | Heat 62°F | Cool 72°F | Heat 70 °F | Cool 80°F | Heat 62 °F | Daily Occupancy | |
| Monday | 7.00 AM | 5.00 PM | 12.00 PM * | 12.00 PM * | Day time only | ||||
| Tuesday | 7.00 AM | 5.00 PM | 12.00 PM * | 12.00 PM * | Day time only | ||||
| Wednesday | 7.00 AM | 5.00 PM | 12.00 PM * | 12.00 PM * | Day time only | ||||
| Thursday | 7.00 AM | 5.00 PM | 7.00 PM | 10.30 PM | Day/evening time only | ||||
| Friday | 7.00 AM | 5.00 PM | 7.00 PM | 10.30 PM | Day/evening time only | ||||
| Saturday | 12.00 PM * | 12.00 PM * | 12.00 PM * | 12.00 PM * | Unoccupied | ||||
| Sunday | 12.00 PM * | 12.00 PM * | 12.00 PM * | 12.00 PM * | Unoccupied | ||||
Scheduling events to the same time will cancel the last period and leave the Terminal Equipment Controller in unoccupied mode
Ex. #2 Residential
| Event | Period 1 – Event 1 | Period 1 – Event 2 | Period 2 – Event 3 | Period 2 – Event 4 | |||||
| Setpoint | Occupied | Unoccupied | Occupied | Unoccupied | |||||
| Cool 72°F | Heat 70°F | Cool 80°F | Heat 62°F | Cool 72°F | Heat 70°F | Cool 80°F | Heat 62°F | Daily Occupancy | |
| Monday | 6:00 AM | 8:00 AM | 4:00 PM | 10:00 PM | Day/evening time only | ||||
| Tuesday | 6:00 AM | 8:00 AM | 4:00 PM | 10:00 PM | Day/evening time only | ||||
| Wednesday | 6:00 AM | 8:00 AM | 4:00 PM | 10:00 PM | Day/evening time only | ||||
| Thursday | 6:00 AM | 8:00 AM | 4:00 PM | 10:00 PM | Day/evening time only | ||||
| Friday | 6:00 AM | 8:00 AM | 4:00 PM | 11:30 PM | Day/evening time only | ||||
| Saturday | 8:00 AM * | 8:00 AM * | 8:00 AM * | 11:59 PM * | Day time only | ||||
| Sunday | 12:00 AM * | 12:00 AM * | 12:00 AM * | 11:59 PM * | Occupied all day | ||||
Scheduling consecutive events to the same time will cause the Terminal Equipment Controller to choose the last event as the time at which it 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 11:59 PM and 12:00 AM on Saturday).
H) Clock/Day Settings (Clock set Y/N)
This section of the menu permits the user to set the time and day.
| Time setting | Day setting | Time format setting |
| Time set? Y/N | No next ® Yes down ¯ | Day set? Y/N | No next ® Yes down ¯ | 12/24hrs set? Y/N | No = exit Yes down ¯ |
| Time 0:00 | Use ▲▼ To set value | Day Monday | Use ▲▼ To set value | 12/24hrs 12 hrs | Use ▲▼ To set value |
J) Schedule hold (Schedule hold Y/N)
| Schedule resume | Resume regular scheduling cancels the permanent hold and re-enables the regular scheduling as set per internal schedule or as per remote NSB via one of the DI’s configured as remote NSB. This action can also by accomplished by using the Resume menu. Any temporary setpoint that are active will be left active for the duration of the period as set per the TOccTime parameter. |
| Schedule occ hold | Hold permanent occupied forces the Terminal Equipment Controller into a permanently occupied mode using the occupied setpoints. All timed scheduling functions are by-passed. The PERMANENT OCCUPIED status will appear in the automatic status scroll. To resume to regular scheduling, 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 to the Schedule Hold menu and select the Schedule resume option. |
| CONFIGURATION PARAMETERS DEFAULT VALUE | SIGNIFICANCE AND ADJUSTMENTS |
| PswrdSet | This parameter sets a password access to prevent |
| Configuration parameters | unauthorized access to the configuration menu |
| menu access password | parameters. A default value of “0” will not prompt a |
| Default value = 0 | password or lock the access to the configuration |
| No password prompted | menu. |
| Range is: 0 to 1000 | |
| Com Addr Terminal Equipment Terminal Equipment Controller networking address Default value = 254 Range is: 0 to 254 | Conditional parameter to BACnet™ MS-TP models (VT76xxX5x00B) Conditional parameter to Wireless models (VT76xxX5x00W)
This parameter will only appear when a BACnet™ or wireless network adapter is present. If the Terminal Equipment Controller is installed as a stand-alone (Network Ready) unit or with an Echelon™ adapter, this parameter will not 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 (VT76xxX5x00W)
This parameter will only appear when a wireless network adapter is present. If the Terminal Equipment Controller is installed as a stand-alone (Network Ready) unit or with a BACnet™ or Echelon™ adapter, this parameter will not be used or displayed |
| 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 gateway ), be sure you set the SAME PAN ID value both at the gateway and the Terminal Equipment Controller(s). | |
| The default value of 0 is NOT a valid PAN ID. |
| Channel Channel selection Default value = 10 Range is: 10 to 26 | Conditional parameter to Wireless models (VT76xxX5x00W)
This parameter will only appear when a wireless network adapter is present. If the Terminal Equipment Controller is installed as a stand-alone (Network Ready) unit or with a BACnet™ or Echelon™ adapter, this parameter will not be used or displayed |
| This parameter (Channel) is used to link specific Terminal Equipment Controllers to specific Viconics wireless gateway(s) (VWG) For every Terminal Equipment Controller reporting to a gateway (maximum of 30 Terminal Equipment Controllers per gateway), be sure you set the 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 valid range of available channel is from 11 to 26 | |
| Get From | Conditional parameter to Wireless models |
| Terminal Equipment Controller | VT76xxX5x00W |
| Get From another device | |
| configuration utility | Entering a MAC address enables an automatic routine |
| Default value = 0 | that automatically fetches all the required configuration |
| Range is: 0 to 254 | properties of the current device from another already |
| configured device an 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 parameter configuration to | |
| be copied from the referenced Terminal Equipment | |
| Controller MAC address. | |
| Ex.: If you are currently configuring MAC12 and the | |
| settings matches exactly the settings of ZN MAC5, | |
| then enter 5 as the current parameter value. | |
| ■ If the process is successful and all required configuration properties have been copied, the value will revert back to 255 ■ If the process is NOT successful and all required configuration properties have NOT been copied ( either the reference device is NOT the same model number or is offline or does not exists ) the value will revert back to 254 to indicate the failure of the process | |
| Leaving the Get From parameter to 255 means that | |
| every configuration parameters will be set | |
| manually. |
| DI 1 | (None) : No function will be associated with the input |
| Digital input no.1 configuration Open contact input = function not energized | (Rem NSB): remote NSB timer clock input. Will disable the internal scheduling of the Terminal Equipment Controller. The scheduling will now be set as per the digital input. The time is still displayed as information, but the menu part related to scheduling is disabled and no longer accessible. |
| Closed contact input = function energized | Open contact = occupied setpoints |
| Default Value = None | Closed contacts = unoccupied setpoints |
| (RemOVR): Temporary override remote contact. Disables all override menu function of the Terminal Equipment Controller. The override function is now controlled by a manual remote momentarily closed contact. When configured in this mode, the input operates in a toggle mode. With this function enabled it is now possible to toggle between 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 Controller LCD screen when the input is energized | |
| (Fan lock): a back-lit flashing Fan lock alarm will be displayed on the Terminal Equipment Controller LCD screen when the input is not energized. Used in conjunction with a local airflow sensor connected to the input. Locks out the Terminal Equipment Controller heating and cooling action if no airflow is detected 10 seconds after the fan ( G terminal ) is energized. | |
| Open contact = no airflow | |
| Closed contacts = airflow present | |
| DI 2 | Same as above. It is possible to configure both inputs to have |
| Digital input no. 2 | the same function. |
| configuration | |
| Default value = None | |
| MenuScro | Removes the scrolling display and only present the room |
| Menu scroll | temperature/humidity to the user. With this option enabled, no |
| Default value = On = | status is given of mode, schedule and outdoor temperature. |
| Scroll active | On = Scroll active |
| Off = Scroll not active |
| lockout Keypad lockout levels Default value = 0 No lock | 0 = No lock 1 = Low level 2 = High level | |||||||
| USER KEY FUNCTIONS | ||||||||
| LEVEL | Resume/ Override scheduling | Permanent Occupied and Unoccupied Setpoints | Temporary setpoints using arrows | System mode setting | Fan mode setting | Schedules setting | Clock setting | Permanent hold |
| 0 | ||||||||
| 1 | ||||||||
| 2 | ||||||||
| pwr del Power-up delay Default value = 10 seconds | On initial power up of the Terminal Equipment Controller (each time 24 Vac power supply is removed & re-applied) there is a delay before any operation is authorized (fan, cooling or 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 mode if frost protection is activated | |||||||
| heat max Maximum heating setpoint limit Default value = 90 °F ( 32 °C ) | Maximum occupied & unoccupied heating setpoint adjustment. Heating setpoint range is: 40 to 90 °F ( 4.5 to 32.0 °C ) | |||||||
| cool min Minimum cooling setpoint limit Default value = 54 °F ( 12 °C ) | Minimum occupied & unoccupied cooling setpoint adjustment. Cooling setpoint range is: 54 to 100 °F ( 12.0 to 37.5 °C ) | |||||||
| Pband Proportional Band setting Default value 2 = 2.0 °F ( 0.6 °C ) | Adjust the proportional band used by the Terminal Equipment Controller PI control loop.
Note that the default value of 2.0 °F ( 1.1 °C ) gives satisfactory operation in most normal installation cases. The use of a superior proportional band different than the factory one is normally warranted in applications where the Terminal Equipment Controller location is problematic and leads to unwanted cycling of the unit. A typical example is a wall mounted unit where the Terminal Equipment Controller is installed between the return and supply air feeds and is directly influenced by the supply air stream of the unit.
| ||||||||||||||||||||||||
| 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 for equipment that posses their own anti cycling timer. Do not use this value unless the equipment is equipped with such internal timer. Failure to do so can damage the equipment. 0, 1, 2, 3, 4 & 5 minutes
Anti-short cycling can be set to 0 minutes for equipment that posses their own anti cycling timer. Do not use that value unless the equipment is equipped with such internal timer. Failure to do so can damage the equipment. | ||||||||||||||||||||||||
| Heat cph Heating stages cycles per hour Default value = 4 C.P.H. | Will set the maximum number of heating stage cycles per hour under normal control operation. It represents the maximum number of cycles that the equipment will turn 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. 3, 4, 5, 6,7 & 8 C.P.H.
For multi stage models, heat cph applies to W1 & W2 For heat pump models, heat cph applies to W1 only (Emergency heat ) |
| cool cph Cooling stages cycles per hour Default value = 4 C.P.H. | Will set the maximum number of cooling stage cycles per hour under normal control operation. It represents the 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. 3 or 4 C.P.H.
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 |
| deadband 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 Fan control Default value = On | Fan control in heating mode. When selecting On; the Terminal Equipment Controller in all cases will always control the fan (terminal G). Valid for On or Auto fan mode When selecting Off; the fan (terminal G), when heating stages (terminals W1 & W2) are solicited, will not be energized. The fan in this case will be controlled by the equipment fan limit control. Valid only for Auto fan mode. On fan mode will leave the fan always on. ON OR OFF
For multi stage models, fan control applies to W1 & W2
For heat pump models, fan control applies to W1 only (Emergency heat) |
| fan del Fan delay Default value = Off | Fan delay extends fan operation by 60 seconds after the call for heating or cooling ends. Valid only for Auto fan mode. “On” fan mode will leave the fan always on. Off or On |
| ToccTime Temporary occupancy time Default value = 3 hours | Temporary occupancy time with occupied mode setpoints when override function is enabled When the Terminal Equipment Controller is in unoccupied mode, function is enabled with either the menu or DI1 or DI2 configured as remote override input. 0,1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 & 12 hours |
| Cal RS | Offset that can be added/subtracted to actual displayed room |
| Room air temperature | temperature |
| sensor calibration | ± 5.0 °F ( ± 2.5 °C ) |
| Default value = 0.0 °F | |
| or °C | |
| Cal OS | Offset that can be added/subtracted to actual displayed outside air |
| Outside air | temperature |
| temperature sensor | ± 5.0 °F ( ± 2.5 °C ) |
| calibration | |
| Default value = 0.0 °F | |
| or °C | |
| H stage Number of heating stages. Applicable to 2 stage models only Default value = 2 stages | Will revert the operation of 2 stages Terminal Equipment Controller to single stage operation only when the second heating step is not needed. 1 or 2 stages
For heat pump models, H stage is limited to 1 stage only (W1 – Aux. Heat) |
| C stage or HP stage Number of cooling stages 2 stages model only Default value = 2 stages | Will revert the operation of 2 stage Terminal Equipment Controller to single stage operation only when the second cooling step is not needed. 1 or 2 stages
For heat pump models, HP stage selects the number of compressor stages |
| H lock Outside air temperature heating lockout Default value = 120 °F ( 49 °C ) | Disables heating stage operation based on outdoor air temperature. Function will only be enabled if OS ( outside air temperature sensor ) is connected. From -15 °F up to 120 °F ( -26 °C up to 49 °C ) |
| C lock Outside air temperature mechanical cooling lockout. Default value = -40 °F ( – 40 °C ) | 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 unoccupied after the last movement has been detected by the PIR.
Range is: 0.5 to 24.0 hours in 0.5 hour increments |
| 2/4event Number of events configuration Default value = 2 event | 2 events, will set up scheduling for the following Event 1 is for Occupied setpoints 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 Event 4 is for Unoccupied setpoints |
| aux cont Auxiliary contact configuration Default value = N.O. normally open | This contact can be used to energize peripheral devices such as: lighting equipment, exhaust fans, economizers, etc. This contact will operate in parallel with the internal occupied/unoccupied schedule of the Terminal Equipment Controller 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 / or DI 2 are configured remote NSB | Off, = no progressive recovery The occupied schedule time is the time at which the system will restart.
On, = progressive recovery active. The occupied schedule time is the time at which the desired occupied temperature will be attained. The Terminal Equipment Controller will automatically optimize the equipment start time. | |||
| In any case, the latest a system will restart is 10 minutes prior to the occupied period time. | ||||
| Heat Pump models only | ||||
| High bp | In Heating or Auto mode, it is the outside air temperature value | |||
| High balance point | at which the auxiliary heat will be cut off. Above that value, only | |||
| Default value = 90 °F ( | the heat pump will be used to maintain the heating setpoint | |||
| 32.0 °C ) | 34 to 90 °F ( 1.0 to 32.0 °C ) | |||
| Function will only be | ||||
| enabled if OS (outside air | ||||
| temperature sensor) is | ||||
| connected. | ||||
| Low bp | In Heating, Cooling or Auto mode, it is the outside air | |||
| Low balance point | temperature value at which the heat pump operation will be cut | |||
| Default value = -12 °F ( – | off. Below that value, only the auxiliary heat will be used to | |||
| 24 °C ) | maintain the heating setpoint | |||
| Function will only be | -40 to 30 °F ( -40 to -1.0 °C ) | |||
| enabled if OS (outside air | ||||
| temperature sensor) is | ||||
| connected. | ||||
| Comf/eco Comfort or economy mode Default value = Comfort | Sets the operation and interaction mode of the heat pump with the auxiliary heat. Comfort mode. In Heating mode. If the heat pump is not able to satisfy the heating setpoint, the auxiliary heat will be energized to satisfy the same heating setpoint. Economy mode. In Heating mode. If the heat pump is not able to satisfy the heating setpoint, the auxiliary heat will be energized to satisfy only when the temperature has dropped 2.0 °F ( 1.1 °C ) below the heating setpoint. Selecting economy mode will add a deadband between the heatpump & auxiliary heat in heating mode. The actual temperature maintained will be lower than the true heating setpoint to maximize the heat pump operation. When the outdoor air temperature drops below the low balance point, the deadband will be eliminated and the auxiliary heat will maintain the true heating setpoint alone. Economy mode. In Emergency mode. If Emergency heat mode is selected, the setpoint maintained, will be the heating setpoint. |
| Re valve Reversing valve operation O/B Default value = O | Heat pump reversing valve operation O will energize the valve in cooling operation. B will energize the valve in heating operation O OR B |
| comp/aux Compressor/auxiliary interlock Default value = Off | Sets the operation and interaction mode of the heat pump with the auxiliary heat. Interlock Off. In Heating mode. If the heat pump is not able to satisfy the heating setpoint, the auxiliary heat will be energized at the same time as the heat pump stage. Typically applies when the air handler heat pump coil is installed before the auxiliary heat. ( all electric systems ) Interlock On. In Heating mode. If the heat pump is not able to satisfy the heating setpoint, the auxiliary heat will be energized and the heat pump will be cut off. Typically applies when the air handler heat pump coil is installed after the auxiliary heat. ( add on systems ) There is a 2 minute delay to restart the heat pump, when the auxiliary heat is shut down Off or On |
Notes for Heat Pump models: When the outside air sensor is not connected or is shorted, the Terminal Equipment Controller bypasses the heating / cooling lockouts and the low / high balance points. Also Heat Pump model when set in Emergency system mode bypasses heating lockout and permits auxiliary heating whenever a heating demand occurs.
| min pos Minimum position Default value = 0% | Outside air damper minimum position. Will be active only when fan is on ( G terminal ) and the internal or remote scheduling is in occupied mode.
When internal or remote scheduling is in unoccupied mode and/or fan is off, minimum position will be set to 0%
0 to 100 % = 0 to 10 VDC output range | ||||||||
| Outside air percentage | 0% | 5% | 10% | 15% | 20% | 25% | 30% | ||
| Setting for 0-10 VDC | 0% | 5% | 10% | 15% | 20% | 25% | 30% | ||
| Setting for 2-10 VDC | 0 to 20% | 24% | 28% | 32% | 36% | 40% | 44% | ||
| C mech Mechanical cooling allowed Default value = Off | In Cooling mode. Allows the operation of the mechanical cooling if the 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. In this case, mechanical cooling will never operate at the same time as free cooling. On Typically applies when the MS (mixed air temperature sensor) is installed before the mechanical cooling refrigeration coils in the mixing plenum. In this case, mechanical cooling is allowed when the free cooling (economizer operation) cannot maintain the cooling setpoint. OFF OR ON | ||||||||
| mix stpt Mixed air setpoint Default value = 55 °F ( 13.0 °C ) | Free cooling mixed air setpoint when economizer mode is enabled. 50 to 90 °F ( 10.0 to 32.0 °C ) | ||||||||
| MS dis Display mixed air temperature Economizer model only, only if sensor is installed | Used as diagnostic / service help to troubleshoot and diagnose economizer operation. | ||||||||
All models
| 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. Check for tripped fuse or circuit breaker |
| Overloaded power transformer | Verify that the transformer used is powerful enough (enough VA’s) to supply all controlled devices including the Terminal Equipment Controller | |
| Keyboard menu does not access all functions | Keyboard locked | Change configuration parameter LOCKOUT to value “0” to access all levels of the menu |
| Temperature setpoints revert to their original value after a certain time period | Temporary setpoint option selected | 1. The Terminal Equipment Controller needs to be in Permanent setpoint mode for the new setpoint to be kept and memory and used all the time 2. Go to the Set Temperature menu. 3. The last prompt is setpoint type. Set it to a Permanent setpoint |
| The Terminal Equipment Controller will not call for heating | Wrong mode selected | Select heating mode |
| Terminal Equipment Controller in Unoccupied mode | Select Occupied Hold in Schedule hold or Override to force the Terminal Equipment Controller Occupied heating setpoint | |
| Anticycle delay active | Wait, the anticycling period will end and the equipment will start | |
| Heating setpoint is satisfied | Raise the Heating setpoint | |
| Heating lockout attained | 1. Mode is locked out based on outside air temperature 2. Change configuration parameter H Lock to value 120 °F ( 49 °C ) to by-pass lockout | |
|
Wiring error | 1. Start the Fan by forcing the Fan into mode 2. Put a jumper across terminals RH & W1. The heating should come ON. If it does not, verify the wiring and check if a jumper is required between RC & RH | |
|
The Terminal Equipment Controller 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 | |
| Anticycle delay active | Wait, the anticycling period will end and the equipment will start | |
| Cooling setpoint is satisfied | Lower the cooling setpoint | |
| Cooling lockout attained | 1. Mode is locked out based on outside air temperature 2. Change configuration parameter C Lock to value -40 °F ( -40 °C ) to by-pass lockout |
| Wiring error | 1. Start the Fan by forcing the Fan ON mode 2. Put a jumper across terminals RC & Y1. The cooling should come ON. If it does not, verify wiring | |
| The Terminal Equipment Controller will not turn on the fan | Wrong mode selected | 1. Start the Fan by forcing the Fan ON mode 2. Put a jumper across terminals RC & G. The fan should come ON. If it does not, verify wiring |
| Wiring error | ||
| Digital display shows missing digits or erratic segments | Defective display | Replace Terminal Equipment Controller |
Heat pump models
| Symptom | Possible Cause | Corrective Action |
|
Auxiliary heat does not operate | Wrong mode selected | Select emergency heat mode |
| Terminal Equipment Controller in Unoccupied mode | Select Occupied Hold in Schedule hold or Override to force the Terminal Equipment Controller Occupied heating setpoint | |
| Anticycle delay active | Wait, the anticycling period will end and the equipment will start | |
| Heating setpoint is satisfied | Raise the Heating setpoint | |
| High Balance point attained | 1. Mode is locked out based on outside air temperature 2. Change configuration parameter High BP to value 90 °F ( 32 °C ) to by-pass lockout | |
| Heating lockout attained | 1. Mode is locked out based on outside air temperature 2. Change configuration parameter H Lock to value 120 °F ( 49 °C ) to by- pass lockout | |
| Wiring error | 1. Start the Fan by forcing the Fan ON mode 2. Put a jumper across terminals RH & W1. The heating should come ON. If it does not, verify wiring and check if a jumper is required between RC & RH | |
| Heat pump does not operate in heating mode | Wrong mode selected | Select heating mode |
| Terminal Equipment Controller in Unoccupied mode | Select Occupied Hold in Schedule hold or Override to force the Terminal Equipment Controller Occupied heating setpoint | |
| Anticycle delay active | Wait, the anticycling period will end and the equipment will start | |
| Heating setpoint is satisfied | Raise the Heating setpoint | |
| Low Balance point attained | 1. Mode is locked out based on outside air temperature 2. Change configuration parameter Low BP to value -12 °F ( -24 °C ) to by- pass lockout | |
| Heating lockout attained | 1. Mode is locked out based on outside air temperature 2. Change configuration parameter H Lock to value 120 °F ( 49 °C ) to by- pass lockout | |
| Wiring error | 1. Start the Fan by forcing the Fan ON mode 2. Put a jumper across terminals RH & W1. The heating should come ON. If it does not, verify wiring and check if a jumper is required between RC & RH | |
| Wrong reversing valve configuration | 1. Wrong selection of parameter Re Valve 2. Select O will energize the valve in cooling operation. Valve is normally heat. 3. Select B will energize the valve in heating operation. Valve is normally cool. |
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT
TO THE FOLLOWING TWO CONDITIONS:
Viconics Technologies Inc.
9245 Langelier Blvd. I St-Leonard I Quebec I Canada I H1P 3K9
Tel.: (514) 321.5660
Fax: (514) 321.4150
Toll-free: 1 800.563.5660
sales@viconics.com
www.viconics.com
Download manual:
Viconics VT7600 Programmable Thermostats Installation Guide
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