VT7600 Series Programmable &

VT7600 Series
Programmable & Non-Programmable Thermostats
For Commercial HVAC Applications
(Issue Date June 17, 2008 – 028-0132 R8
Product overview
The VT7600 PI thermostat family is specifically designed for single stage
and multi-stage control of heating/cooling equipment such as rooftop and
self-contained units. The product features an intuitive, menu-driven, back-lit
LCD display which walks users through the programming steps, making the
process extremely simple. Accurate temperature control is achieved due to
the product’s PI time proportional control algorithm, which virtually eliminates
temperature offset associated with traditional, differential-based thermostats.
All models contain two digital inputs, which can be set by the user to monitor
filter status, activate a remote temporary occupancy switch, and/or used as
a general purpose service indicator. In addition, depending on the model, up
to three remote sensor inputs are available. All models contain a SPST
auxiliary switch, which can be used to control lighting or disable the
economizer function and a discharge air sensor input. For more advanced
applications, an economizer control logic has been integrated onto the
thermostat for use with proportional damper economizer actuators.
Fig.1 - VT7600 Series
The additional following documentation is available on www.viconics.com
• Information on the LON models (VT76xxX1000E), is available on document ITG-VT7600-LON-Exx
• Information on the BACnet models (VT76xxX1000B), is available on document ITG-VT7600-BAC-Exx
• Information on the Wireless models (VT76xx0X1000W), is available on documents: ITG-VWG-40-BACExx and LIT-VWG-40-SETUP-Exx
Models available
Application
1 Heat / 1 Cool
2 Heat / 2 Cool
2 Heat / 2 Cool
with economizer
3 Heat / 2 Cool
heat pump
Model (programmable)
VT7652A1000
VT7652B1000
VT7656B1000
VT7652H1000
Model (non-programmable)
VT7600A1000
VT7600B1000
VT7605B1000
VT7600H1000
Features and benefits
Features
•
•
•
•
•
•
•
•
•
•
•
•
PI time proportioning algorithm
2 digital inputs
Smart fan
Unique configuration key
Lockable keypad
Freeze protection
EEPROM memory
6 hour reserve time for clock
Remote room and outdoor temperature sensor
Auxiliary output
Discharge air sensor
Intuitive, menu-driven programming (7 day, 2/4 events on programmable models only)
• Economizer output (0-10 V d.c.) (on economizer models
only)
• Low/High balance point (on heat pump models only)
• 3 Heat/2 Cool (on heat pump models only)
028-0132R8_LIT-VT7600-E08.doc
Benefits
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
⇒
Increased comfort , accuracy, and energy savings
Adds functionality
Saves energy during night mode
Minimizes parameter tampering
Tamper proof, no need for thermostat guards
Prevents costly freeze damage
No loss of program
No need to reprogram day/time after power shortage
Increase flexibility and functionality
Can be used for lighting and/or economizer override
Can be used to monitor unit efficiency
Can be used for all types of establishments
⇒ Excellent retrofit opportunities
⇒ Protect and optimize systems performances
⇒ Support single and two stages heat pump with one
auxiliary heat stage
www.viconics.com / sales@viconics.com
2
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 PI
time proportioning control algorithm, which virtually
eliminates temperature offset associated with
traditional, differential-based on/off thermostats.
Fig.2 - On/Off mechanical control vs PI electronic control.
- Filter: a backlit flashing Filter alarm will be
displayed on the thermostat LCD screen when the
input is energized. It can be tied to a differential
pressure switch that monitor filters
- Rem NSB: remote NSB timer clock input. Will
disable the internal scheduling of the thermostat.
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 thermostat. . 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.
Features overview
• 7 day programmable models, 2 or 4 events
• Gas/oil or electric system compatibility for all type
of applications
• Remote indoor averaging sensing capability
• Temperature averaging with 2, 3, 4, 9 or 16
sensors
• Remote outdoor sensing capability for added
flexibility
- System mode lock out
- Heat pump balance point settings
• Remote discharge air sensor input for monitoring
purpose
- System efficiency feedback
• Lockable keypads for tamper proofing. No need for
thermostat guards
• Automatic frost protection to prevents costly freeze
damage
• Anti short cycle and minimum on/off run time
protection. Reduces wear and maximizes life span
of mechanical equipment.
• 2 programmable digital inputs for added flexibility.
Each input can be programmed as the following:
- None: No function will be associated with the
input
- Service: a backlit flashing Service alarm will be
displayed on the thermostat LCD screen when
the input is energized. It can be tied in to the AC
unit control card, which provides an alarm in
case of malfunction.
•
•
•
•
•
•
Programmable smart fan operation saves
energy during night mode
Non volatile EEPROM memory prevents loss of
parameters during power shortage
Built in default profile set-up for easier start up
and commissioning
Configurable SPST output relay on
programmable models for lighting, exhaust fan
or fresh air control
6 hour typical reserve time for clock in case of
power loss
0 to 10 Vdc economizer output for more retrofit
opportunities
- Built in dry bulb economizer logic using
outdoor temperature sensor
- Input for supply/mixed air temperature sensor
Heat pump model specific features
• Selectable single or dual stage compressor
stages
• High balance point:
Locks out auxiliary heating when outside air
temperature is above this value
• Low balance point:
Locks out heat pump compressor operation
when outside air temperature is below this value
• Comfort/economy mode:
In economy mode, heat pump use is maximized
before turning On auxiliary heating
• Compressor/auxiliary interlock:
Adds flexibility by locking out heat pump
operation during auxiliary heating to prevent high
pressure trip when the coil is downstream of the
auxiliary heat source.
3
Installation
•
•
•
•
Remove security screw on the bottom of thermostat cover.
Open up by pulling on the bottom side of thermostat.
Remove Assembly and remove wiring terminals from sticker. (Fig. 3)
Please note the FCC ID and IC label installed in the cover upon
removal of cover for the wireless products.
A)
12345-
Location:
Should not be installed on an outside wall.
Must be installed away from any heat source.
Should not be installed near an air discharge grill.
Should not be affected by direct sun radiation.
Nothing must restrain vertical air circulation to the thermostat.
B) Installation:
1- Swing open the thermostat PCB to the left by pressing the PCB
locking tabs. (Fig. 4)
2- Pull out cables 6” out of 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 of the two mounting holes
on the wall. Install proper side of base up.
6- Install anchors in the wall.
7- Insert screws in mounting holes on each side of the base.
(Fig. 4)
8- Gently swing back the circuit board on the base and push on it
until the tabs lock it.
10- Strip each wire 1/4 inch.
11- Insert each wire according to wiring diagram.
13- Gently push back into hole excess wring (Fig. 5)
14- Re-Install wiring terminals in correct location. (Fig. 5)
15- Reinstall the cover (top side first) and gently push back extra
wire length into the hole in the wall.
16- Install security screw.
Fig.3
Location of PCB retaining tabs
Fig.4
Re-install terminal blocks
Fig.5
Thermostat assembly
(VT7300F1000 shown)
•
•
•
•
•
If replacing an old thermostat, label the wires before
removal of the old thermostat.
Electronic controls are static sensitive devices.
Discharge yourself properly before manipulation and
installing the thermostat.
Short circuit or wrong wiring may permanently damage
the thermostat or the equipment.
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.
All VT7600 series thermostats are to be used only as
operating controls. Whenever a control failure could
lead to personal injury and/or loss of property, it
becomes the responsibility of the user to add safety
devices and/or alarm system to protect against such
catastrophic failures.
Fig.6
4
Wiring
Terminal identification
Multistage
Part Number
Programmable
1H / 1C
VT7656B
VT7605B
VT7652B
VT7600B
VT7652A
Yes
No
Yes
No
Yes
Heat Pump
VT7600A Part Number
No
Top left terminal block
Programmable
VT7652H
VT7600H
Yes
No
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 block
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
5 pole left top connector
Y2 Y1
G
RC C
3 pole left top connector
RH W1
W2
O/B
8 pole bottom connector
EC AU D1 D2 RS
Scom
OS MS
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: If auxiliary output is used to toggle occupancy of the electronic control card inside the equipment, configure the
relay parameter (Aux cont ) to the N.O. setting. A second relay can be added for additional functionality of the
occupancy output.
Note 3: Economizer output uses a half bridge rectifier. Reference of the control signal is the common of the power supply
of the thermostat. (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 the unit provides power to the thermostat and the additional loads that will be wired to the
thermostat.
5
Detailed wiring diagrams for selected models
Thermostat Terminals -VT7656B1000
VT7656B1000
2 Heat / 2 Cool / Economizer / Programmable
Y2
Y1
G
C
RC
RH W1 W2
EC AU DI1 DI2 RS
Y1
Cool
Stage 2
G
RC
C
OS MS
Digital Input #1
Jumper J1
See note 1
(previous
page)
Y2
Scom
Digital Input #2
RH
W1
W2
Heat
Stage 1
Fan
Cool
Stage 1
AU
EC
DI1
DI2
0-10 Vdc
Heat
Stage 2
24V
Com
RS
Scom
OS
MS
Remote
Room
Sensor
Remote
Mixed Air
Sensor
Auxiliary
Output
Remote
Outdoor
Sensor
24 Vac
Thermostat internal wiring
System wiring
Jumper J1
Field contacts
T1
VT7652H1000
Heat pump / Programmable
Thermostat Terminals - VT7652H1000
Y2
Y1
G
RC
C
AU DI1 DI2 RS
Y1
Compressor
Stage 2
G
RC
C
Compressor
Stage 1
W1
O/B
AU
Auxiliary
Output
DI1
DI2
RS
Scom
T1
OS
Remote
Outdoor
Sensor
Field contacts
MS
Remote
Mixed Air
Sensor
Remote
Room
Sensor
Reversing
Valve
24 Vac
OS MS
Digital Input #2
Auxiliary
Heat
Fan
Thermostat internal wiring
System wiring
Jumper J1
RH
Scom
Digital Input #1
Jumper J1
See note 1
(previous
page)
Y2
RH W1 O/B
6
Remote sensor accessories
Model no.
S3010W1000
S3020W1000
S2020E1000
S2060A1000
S2000D1000
Description
Wall mounted temperature sensor
Wall mounted temperature sensor with override button and occupancy status LED
Outdoor temperature sensor
Averaging temperature sensor
Duct mounted temperature sensor
Remote mount temperature sensors use 10K NTC thermistors.
• This sensor can be used for:
• 3 thermistors with 2 dip switches are provided with each sensor for various
averaging combinations
• Optional occupancy led
• Optional override key
Fig.8 – S3020W1000
wall mounted sensor
Wiring example of single remote room sensor:
VT7600 Series
Thermostat
Scom
RS
AU
1x S3020W1000
Remote wiring 1 sensor
S2-1 = ON / S2-2 = ON
Scom
S3010W1000
Remote wiring 1 sensor
S2-1 = ON / S2-2 = ON
Scom
OR
RS
RS
Aux
C
C
Dip switch
setting for:
1 sensor
DI
D2 D1
ON
1 2
S2-1 = ON
S2-2 = ON
Wiring examples of 2 remote room sensors for averaging applications:
VT7600 Series
Thermostat
Scom
RS
AU
2x S3020W1000
Remote wiring 2 sensors
S2-1 = OFF / S2-2 = ON
Scom
Scom
Scom
RS
RS
RS
Aux
Aux
AU
C
C
C
DI
DI
Scom
RS
AU
Scom
Scom
RS
RS
C
D2 D1
D2 D1
VT7600 Series
Thermostat
2x S3010W1000
Remote wiring 2 sensors
S2-1 = OFF / S2-2 = ON
VT7600 Series
Thermostat
1x S3010W1000 and 1x S3020W1000
Remote wiring 2 sensors
S2-1 = OFF / S2-2 = ON
Notes for averaging applications:
Scom
Scom
RS
RS
•
Aux
•
C
C
DI
•
D2 D1
S3010W1000 and S3020W1000 can be
mixed matched.
S3010W1000 and S3020W1000 are to
be wired in parallel.
Respect the dip switch setting in each
remote sensor.
Dip switch
setting for:
2 sensors
ON
1 2
S2-1 = OFF
S2-2 = ON
Wiring examples of 3 remote room sensors for averaging applications:
VT7600 Series
Thermostat
Scom
RS
AU
C
D2 D1
2x S3010W1000 and 1x S3020W1000
Remote wiring 3 sensors
S2-1 = OFF / S2-2 = OFF
Scom
Scom
Scom
RS
RS
RS
Aux
C
DI
VT7600 Series
Thermostat
Scom
RS
AU
C
D2 D1
1x S3010W1000 and 2x S3020W1000
Remote wiring 3 sensors
S2-1 = OFF / S2-2 = OFF
Scom
Scom
Scom
RS
RS
RS
Aux
Aux
C
C
DI
DI
Dip switch
setting for:
3 sensors
ON
1 2
S2-1 = OFF
S2-2 = OFF
7
Temperature vs resistance chart for 10 Kohm NTC thermistor
(R25°C = 10KΩ±3% - B25/85°C = 3975K±1.5%)
ºC
ºF
ºF
Kohm
ºC
ºF
32 32.1910
ºF
20
68 12.4601
Kohm
ºF
Kohm
40 104
ºC
5.3467
S3010W1000 remote wall
mounted temperature
sensor, dip switch location
Kohm
ºC
Kohm
ºC
-40 -40 324.3197
-20
-4 94.5149
0
-39 -38 303.6427
-19
-2 89.2521
1
34 30.6120
21
70 11.9177
41 106
5.1373
-38 -36 284.4189
-18
0 84.3147
2
36 29.1197
22
72 11.4018
42 108
4.9373
-37 -35 266.5373
-17
1 79.6808
3
37 27.7088
23
73 10.9112
43 109
4.7460
-36 -33 249.8958
-16
3 75.3299
4
39 26.3744
24
75 10.4443
44 111
4.5631
-35 -31 234.4009
-15
5 71.2430
5
41 25.1119
25
77 10.0000
45 113
4.3881
-34 -29 219.9666
-14
7 67.4028
6
43 23.9172
26
79
9.5754
46 115
4.2208
-33 -27 206.5140
-13
9 63.7928
7
45 22.7861
27
81
9.1711
47 117
4.0607
-32 -26 193.9703
-12
10 60.3980
8
46 21.7151
28
82
8.7860
48 118
3.9074
-31 -24 182.2686
-11
12 57.2044
9
48 20.7004
29
84
8.4190
49 120
3.7607
-30 -22 171.3474
-10
14 54.1988
10
50 19.7390
30
86
8.0694
50 122
3.6202
-29 -20 161.1499
-9
16 51.3692
11
52 18.8277
31
88
7.7360
51 124
3.4857
-28 -18 151.6239
-8
18 48.7042
12
54 17.9636
32
90
7.4182
52 126
3.3568
-27 -17 142.7211
-7
19 46.1933
13
55 17.1440
33
91
7.1150
53 127
3.2333
-26 -15 134.3971
-6
21 43.8268
14
57 16.3665
34
93
6.8259
54 129
3.1150
-25 -13 126.6109
-5
23 41.5956
15
59 15.6286
35
95
6.5499
55 131
3.0016
-24 -11 119.3244
-4
25 39.4921
16
61 14.9280
36
97
6.2866
56 133
2.8928
ON
-23
-9 112.5028
-3
27 37.5056
17
63 14.2629
37
99
6.0351
57 135
2.7886
1 2
-22
-8 106.1135
-2
28 35.6316
18
64 13.6310
38 100
5.7950
58 136
2.6886
-21
-6 100.1268
-1
30 33.8622
19
66 13.0307
39 102
5.5657
59 138
2.5926
Fig.9 – Sensor dip
switch of
location
Location
dip switch
S2000D1000, remote duct mounted temperature sensor c/w
junction box.
This sensor can be used for:
• Remote return air temperature sensing with the sensor
mounted on the return air duct.
• Outside air temperature sensing with the sensor
installed in the fresh air plenum.
• Supply air temperature sensor
Fig.10 – Remote duct mounted temperature sensor
S2060A1000, remote averaging duct mounted temperature sensor c/w junction box.
This sensor can be used for:
• Remote averaging return air temperature sensing with the sensor mounted on the return air duct.
• Outside air temperature averaging sensing with the sensor installed in the fresh air plenum.
• Mixed air temperature averaging sensor for economizer models with the sensor in the mixing plenum.
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
10 K
RS
or
Scom
MS
or
Scom
Scom
OS
RS
or
Scom
MS
or
Scom
OS
(
Scom
10 K
10 K
10 K
8
User menu flow chart:
NOTE: Prompts may not all be present depending on model selected
MENU
If status is:
Unoccupied
Override
schd Y/N
If status is:
Temporary Occupied Time,
Temperat
set? Y/N
Sys mode
set? Y/N
off
emergenc
heat
cool
auto
Fan mode
set? Y/N
Cancel
ovrd Y/N
Appears on stand-alone
models only
Clock
set? Y/N
Schedule
set? Y/N
On
Smart
Auto
Resume
Occ Hold
Uno Hold
Time
set? Y/N
Cooling
set? Y/N
Temperature
Heating
set? Y/N
Temperature
Exit?
Y/N
Unocc CL
set? Y/N
Temperature
Exit
menu Y/N
Schedule
hold Y/N
Unocc HT
set? Y/N
Temperature
Day
set? Y/N
12/24hrs
set? Y/N
Time
Day
°F/°C
set? Y/N
Exit?
Y/N
Exit?
Y/N
12 / 24
°C
°F
Sunday
set? Y/N
Saturday
set? Y/N
Friday
set? Y/N
Thursday
set? Y/N
Wednesda
set? Y/N
Tuesday
set? Y/N
Monday
set? Y/N
Occupied
day? Y/N
Occupied
day? Y/N
Occupied
day? Y/N
Occupied
day? Y/N
Occupied
day? Y/N
Occupied
day? Y/N
Occupied
day? Y/N
Occupied
12:00 pm
Occupied
12:00 pm
Occupied
12:00 pm
Occupied
12:00 pm
Occupied
12:00 pm
Occupied
12:00 pm
Occupied
12:00 pm
Time
Unoccup
12:00 pm
Time
Time
Unoccup
12:00 pm
Time
Time
Unoccup
12:00 pm
Time
Time
Unoccup
12:00 pm
Time
Time
Unoccup
12:00 pm
Time
Time
Unoccup
12:00 pm
Time
Time
Unoccup
12:00 pm
Time
9
Programming and status display instructions
1. Status display
The thermostat features a two-line, eight-character display. There is a low level back-light level that is always active
and can only be seen at night. When left unattended, the thermostat has an auto scrolling display that shows the actual
status of the system. Each item is scrolled one by one with the back lighting off. Pressing any key will cause the back
light to come on.
Sequence of auto-scroll status display:
Room temperature
RoomTemp
x.x °C or °F
Clock status
Monday
12.00 AM
System mode
Sys mode
auto
Sys mode
off
Sys mode
heat
Sys mode
cool
Sys mode emergenc
Schedule status
Occupied
Outdoor
temperature
Outdoor
x.x °C or°F
Occupied
hold
Unoccup
Alarms
Service
Frost ON
SetClock
Unoccup
hold
Override
Filter
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.
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.
• A minimum range status -40 °C ( -40 °F ) is not displayed and indicates a opened sensor or a sensor not connected.
Associated functions, such as mode lockouts and economizer function are automatically disabled.
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 is as follows:
Frost ON
SetClock
Service
Filter
Indicates that the heating is energized by the low limit frost protection room temperature setpoint 5.6 °C ( 42 °F )
Indicates that the clock needs to be reset. There has been a power failure which has lasted longer than 6 hours
Indicates that there is a service alarm as per one of the programmable digital input ( DI1 or DI2 )
Indicates that the filters are dirty as per one of the programmable digital input ( DI1 or DI2 )
Three status LEDs on the thermostat cover are used to indicate the status of the fan, a call for heat, or a call for cooling.
Multistage and single stage models
•
When 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.
Fig.11 - Multistage and single stage models
Heat pump models
•
When the fan is on, the FAN LED will illuminate.
•
When auxiliary heat is on, the AUX HEAT LED
will illuminate.
•
When compressor is on, the HEAT-PUMP LED
will illuminate.
Fig.12 – Heat pump models
10
2. User programming instructions menu
The VT7600 series of thermostat feature an intuitive, menu-driven, back-lit LCD display that walks users through the programming
steps, making the programming 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-programming menu.
If the user pauses at any given time during programming, Auto Help text is displayed to help and guide the user through the usage
and programming of the thermostat.
Press yes key to change cooling temperature setpoint
Use the up or down arrow to adjust cooling setpoint
Ex.:
Each of the sections in the menu are accessed and programmed using 5 keys on the thermostat cover.
The priority for the alarms is as follows:
The YES key is used to confirm a selection, to move onto the next menu item and to manually scroll through the
displayed information.
The NO key is used when you do not desire a parameter change, and to advance to the next menu item. Can
also be used to toggle between heating and cooling setpoints.
The MENU key is used to access the Main User Menu or exit the menu.
The down arrow key is used to decrease temperature setpoint and to adjust the desired values when
programming and configuring the thermostat.
The up arrow key is used to increase temperature setpoint and to adjust the desired values when programming
and configuring the thermostat.
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 thermostat is left unattended for
45 seconds
Sequence of user menu:
Override
Resume
Override
schd Y/N
Temperature
setpoints
System mode
setting
Temperat
set Y/N
Sys mode
set Y/N
Fan mode setting
Fan mode
set Y/N
Schedules setting
Schedule
set Y/N
Clock setting
Clock
set Y/N
Appears only in
unoccupied mode
Schedule hold
Schedule
hold Y/N
Appears only on
stand-alone models
Cancel
ovrd Y/N
Appears only in
override mode
There is a default profile set in the thermostat from the factory.
This enables the thermostat to operate as a non-programmable unit in day mode operation at start up.
Programmed default temperature setpoints:
Programmed default modes:
Occupied cooling setpoint = 24 °C ( 75 °F )
System mode = Auto
Occupied heating setpoint = 22 °C ( 72 °F )
Unoccupied cooling setpoint = 28 °C ( 82 °F )
Fan mode = Smart (for models with a communication module or
programmable stand-alone models)
Fan mode = Auto (for non-programmable stand-alone models)
Unoccupied heating setpoint = 18 °C ( 65 °F )
Programmed default schedules:
Fahrenheit scale
Monday through Sunday
Setpoint type = permanent
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.
11
A) Override an unoccupied period
Override
schd Y/N
This menu will appear only when the thermostat 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 thermostat 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 thermostat is in Unoccupied override mode.
Answering “Yes” to this question will cause the thermostat to resume the regular programmed setpoints & scheduling.
C) Temperature setpoints
Permanent setpoint changes
Temperat
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
No next →
Heating
set? Y/N
Yes down ↓
Use ▲▼ keys to set value, Yes key to confirm
Use ▲▼
Cooling
Heating
70.0 °F
68.00 °F
To set value
Cooling
set? Y/N
Cooling setpoint
Unoccupied mode
Heating setpoint
Unoccupied mode
°F or °C
display setting
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 ↓
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
Temporary setpoints can be modified through the Up arrow key (▲) and the Down arrow keys (▼).
User will be prompted with the present mode (Heating or Cooling) of the thermostat 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 temporary.
They will remain effective for the duration specified by ToccTime.
Setpoints will revert back to their default value after internal timer ToccTime expires.
If a permanent change to the setpoints is required, use the Temperat set ? menu
D) System mode setting
Sys mode
set Y/N
This menu is accessed to set system mode operation
Use ▲▼ to set value, Yes key to confirm
Sys mode
auto
Sys mode
cooling
Sys mode
heating
Sys mode
emergency
Sys mode
off
Automatic mode
Automatic changeover mode between heating and cooling operation
Cooling mode
Cooling operation mode only
Heating mode
Heating operation mode only
Emergency heat mode ( heat pump models only )
Forced auxiliary heat operation mode only
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
12
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
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 available on all models with a communication module, on all stand-alone programmable models
or if DI1 or DI2 is set to RemNSB on stand-alone non-programmable 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 the whether 2 or 4 events is needed. Each day can be tailored to specific schedules
if needed.
• 2 events can be programmed per day.
• Occupied & unoccupied periods can be set for each day.
Monday timer
Schedule set
Tuesday timer
Schedule set
Wednesday timer
Schedule set
No next →
No next →
Tuesday
Wednesda
set? Y/N
set? Y/N
Yes down ↓
Yes down ↓
Yes key to access day scheduling, No key to jump to next day
No next →
No next →
Occupied
Occupied
Occupied
Day? Y/N
Day? Y/N
Day? Y/N
Yes down ↓
Yes down ↓
Yes key to access day scheduling, No key to jump to next day
Yes next →
Copy Y/N
Copy Y/N
Previous
Previous
No down ↓
Yes key to copy previous day, No key to set new time value for each day
Use ▲▼
Use ▲▼
Occupied
Occupied
Occupied
00:00 AM
00:00 AM
00:00 AM
To set value
To set value
Use ▲▼ to set value, Yes key to confirm
Use ▲▼
Use ▲▼
Unoccup
Unoccup
Unoccup
00:00 AM
00:00 AM
00:00 AM
To set value
To set value
Use ▲▼ to set value, Yes key to confirm
Monday
set? Y/N
No next →
Yes down ↓
Selects the day to be programmed or
modified
No next →
Yes down ↓
Yes = Daily schedules will be accessed
No = Unoccupied mode all day
Yes next →
No down ↓
Yes = Will copy previous day schedule
No = Daily schedules will be accessed
Use ▲▼
To set value
Sets Event # 1 Occupied time
Will activate occupied setpoints
Use ▲▼
To set value
Sets Event # 2 Unoccupied time
Will activate unoccupied setpoints
Typical examples of a 2 event office schedule
Ex. #1 Office building closed all weekend
Event
Setpoint
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Period #1 - Event #1
Occupied
Cool
Heat
72 °F
70 °F
7.00 AM
7.00 AM
7.00 AM
7.00 AM
7.00 AM
12.00 PM *
12.00 PM *
Other days are identical
Note:
Period #1 - Event #2
Unoccupied
Cool
Heat
80 °F
62 °F
6.00 PM
6.00 PM
6.00 PM
6.00 PM
6.00 PM
12.00 PM *
12.00 PM *
12:00 PM = Noon
12:00 AM = Midnight
Daily
Occupancy
Day time only
Day time only
Day time only
Day time only
Day time only
Unoccupied
Unoccupied
* Programming consecutive events to the same time will cause the thermostat to choose the last event as the time at which it will set
its schedule. In the above example, the thermostat will control to the unoccupied set point until 7:00 AM Monday.
Ex. #2 Commercial building which is occupied all weekend
Event
Setpoint
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Period #1 - Event #1
Occupied
Cool
Heat
72 °F
70 °F
8.00 AM
8.00 AM
8.00 AM
8.00 AM
8.00 AM
12.00 AM **
12.00 AM **
Period #1 - Event #2
Unoccupied
Cool
Heat
80 °F
62 °F
5.00 PM
5.00 PM
5.00 PM
5.00 PM
5.00 PM
11.59 PM **
11.59 PM **
Daily
Occupancy
Day time only
Day time only
Day time only
Day time only
Day time only
Occupied
Occupied
** To program 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 PM with this schedule configuration.
13
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.
• 4 events can be programmed per day.
• Occupied & Unoccupied periods can be set for each day.
• Programming the 3 rd. & 4 th. events to the same time will cancel the last period.
Monday timer
Schedule set
Tuesday timer
Schedule set
Wednesday timer
Schedule set
No next →
No next →
Tuesday
Wednesda
set? Y/N
set? Y/N
Yes down ↓
Yes down ↓
Yes key to access day scheduling, No key to jump to next day
No next →
No next →
Occupied
Occupied
Occupied
Day? Y/N
Day? Y/N
Day? Y/N
Yes down ↓
Yes down ↓
Yes key to access day scheduling, No key to jump to next day
Yes next →
Copy Y/N
Copy Y/N
Previous
Previous
No down ↓
Yes key to copy previous day, No key to set new time value for each day
Use ▲▼
Use ▲▼
Occupied
Occupied
Occupied
00:00 AM
00:00 AM
00:00 AM
To set value
To set value
Use ▲▼ to set value, Yes key to confirm
Use ▲▼
Use ▲▼
Unoccup
Unoccup
Unoccup
00:00 AM
00:00 AM
00:00 AM
To set value
To set value
Use ▲▼ to set value, Yes key to confirm
Use ▲▼
Use ▲▼
Occupie2
Occupie2
Occupie2
00:00 AM
00:00 AM
00:00 AM
To set value
To set value
Use ▲▼ to set value, Yes key to confirm
Use ▲▼
Use ▲▼
Unoccup2
Unoccup2
Unoccup2
00:00 AM
00:00 AM
00:00 AM
To set value
To set value
Use ▲▼ to set value, Yes key to confirm
Monday
set? Y/N
Other days are identical
No next →
Yes down ↓
Selects the day to be programmed or
modified
No next →
Yes down ↓
Yes = Daily schedules will be accessed
No = Unoccupied mode all day
Yes next →
No down ↓
Yes = Will copy previous day schedule
No = Daily schedules will be accessed
Use ▲▼
To set value
Sets Event # 1 Occupied time
Will activate occupied setpoints
Use ▲▼
To set value
Sets Event # 2 Unoccupied time
Will activate unoccupied setpoints
Use ▲▼
To set value
Sets Event # 3 Occupied time
Will activate occupied setpoints
Use ▲▼
To set value
Sets Event # 4 Unoccupied time
Will activate unoccupied setpoints
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
Daily
Cool
Heat
Cool
Heat
Cool
Heat
Cool
Heat
Occupancy
72 °F
70 °F
80 °F
62 °F
72 °F
70 °F
80 °F
62 °F
Day time only
7.00 AM
5.00 PM
12.00 PM *
12.00 PM *
Monday
Day time only
7.00 AM
5.00 PM
12.00 PM *
12.00 PM *
Tuesday
Day time only
7.00 AM
5.00 PM
12.00 PM *
12.00 PM *
Wednesday
Day/evening time only
7.00 AM
5.00 PM
7.00 PM
10.30 PM
Thursday
Day/evening time only
7.00 AM
5.00 PM
7.00 PM
10.30 PM
Friday
Unoccupied
12.00
PM
*
12.00
PM
*
12.00
PM
*
12.00
PM
*
Saturday
Unoccupied
12.00 PM *
12.00 PM *
12.00 PM *
12.00 PM *
Sunday
* Programming events to the same time will cancel the last period and leave the thermostat 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
Daily
Cool
Heat
Cool
Heat
Cool
Heat
Cool
Heat
Occupancy
72 °F
70 °F
80 °F
62 °F
72 °F
70 °F
80 °F
62 °F
Day/evening time only
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 time only
Saturday
8:00 AM *
8:00 AM *
8:00 AM *
11:59 PM *
Occupied all day
Sunday
12:00 AM *
12:00 AM *
12:00 AM *
11:59 PM *
* Programming consecutive events to the same time will cause the thermostat to choose the last event as the time at which it will set its
schedule. In the above example for Saturday, the thermostat 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 program the first event on Sunday at 12:00
AM. The thermostat will force a one minute unoccupied period for a one minute period (between 11:59 PM and 12:00 AM on
Saturday)
14
H) Clock/Day Settings
Clock
set Y/N
This section of the menu permits the user to set the time and day.
Time setting
Time
set? Y/N
Time
0:00
No next →
Yes down ↓
Use ▲▼
To set value
Day setting
Day
set? Y/N
Day
Monday
No next →
Yes down ↓
Use ▲▼
To set value
Time format setting
12/24hrs
set? Y/N
12/24hrs
12 hrs
No = exit
Yes down ↓
Use ▲▼
To set value
J) Schedule hold
Schedule
hold Y/N
This menu
•
•
•
•
•
This menu will only appear on stand-alone thermostat, e.i. without a BACnet / Echelon module.
This section of the menu permits the user to set a permanent schedule hold, which bypasses the internal thermostat
scheduling.
The permanent schedule hold function is typically used for non-scheduled events that extend for various periods of
time.
Enabling a permanent occupied or permanent unoccupied schedule hold will cancel any active override.
The use of temporary setpoints during permanent hold is permitted. The duration of the temporary setpoint is as set
per the TOccTime parameter. Ex. 3 hours
Use ▲▼ to set value, Yes key to confirm
Schedule
resume
Resume regular scheduling cancels the permanent hold and re-enables the regular
programming as set per internal scheduling 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 thermostat into a permanent 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 thermostat 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..
15
Installer configuration parameter menu
Configuration can be done through the network or locally at the thermostat.
• To enter configuration, press and hold the middle button (Menu) for 8 seconds
• Press the same middle button repetitively to scroll between all the available parameters
• Use the up and down key to change the parameter to the desired value.
• To acknowledge and save the new value, press the middle button again.
• The next listed parameter is now displayed
Configuration
parameters
DI 1
Significance
Default value
Adjustments
Digital input no.1 configuration
None, No function will be associated with the input
Open contact input = function not
energized
Rem NSB, remote NSB timer clock input. Will disable
the internal scheduling of the thermostat. 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
Default value = None
Open contact = occupied setpoints
Closed contacts = unoccupied setpoints
RemOVR Temporary override remote contact.
Disables all override menu function of the thermostat.
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 thermostat LCD screen when the input is
energized
Service, a back-lit flashing Service alarm will be
displayed on the thermostat LCD screen when the
input is energized
Digital input no. 2 configuration
DI 2
Default value = None
Keypad lockout levels
lockout
0 = No lock
1 = Low level
2 = High level
Default value = 0 No lock
Level
0
1
2
pwr del
Same as above. It is possible to configure both inputs
to have the same function.
Resume/
Override
scheduling
Permanent
Occupied
and
Unoccupied
Setpoints
Temporary
setpoints
using
arrows
System
mode setting
Fan mode
setting
Schedules
setting
Clock
setting
Permanent
hold
Resume
sched Y/N
RoomTemp
set Y/N
Up key (▲)
Down key (▼)
Sys mode
set Y/N
Fan mode
set Y/N
Schedule
set Y/N
Clock
set Y/N
Schedule
hold Y/N
Yes access
Yes access
No access
Yes access
No access
No access
Yes access
Yes access
No access
Power-up delay
Default value = 10 seconds
Yes access
No access
No access
Yes access
No access
No access
Yes access
No access
No access
Yes access
Yes access
Yes access
Yes access
No access
No access
On initial power up of the thermostat ( 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 / thermostat in one location.
10 to 120 seconds
16
Frost pr
Frost protection enabled
Default value = Off
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 )
cool min
Minimum cooling setpoint limit
Default value = 54 °F ( 12 °C )
Anticycle
Minimum on/off operation time for
stages
Default value = 2 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.
Heating stages cycles per hour
Default value = 4 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 )
Heat cph
cool cph
Deadband
fan cont
Cooling stages cycles per hour
Default value = 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
Minimum deadband
Default value = 2.0 °F ( 1.1 °C )
Fan control
Default value = On
For multi stage models, fan control
applies to W1 & W2
For heat pump models, fan control
applies to W1 only (Emergency
heat)
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
Maximum occupied & unoccupied heating setpoint
adjustment. Heating setpoint range is:
40 to 90 °F ( 4.5 to 32.0 °C )
Minimum occupied & unoccupied cooling setpoint
adjustment. Cooling setpoint range is:
54 to 100 °F ( 12.0 to 37.5 °C )
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
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.
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.
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 control in heating mode.
When selecting On; the thermostat 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
17
fan del
Com Addr
ToccTime
cal RS
cal OS
H stage
C stage
Or
HP stage
H lock
C lock
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
Thermostat networking address
Conditional parameter to BACnet MS-TP models
Default value = 4
(VT76xxX1000B)
Range is: 0 to 254
Conditional parameter to Wireless models
(VT76xxX1000W)
This parameter will only appear when a BACnet or
• For BACnet MS-TP models valid
wireless network adapter is present. If the
range to use is from 1 to 127
• For wireless models valid range is 0 thermostat is installed as a stand-alone unit or with
an Echelon adapter, this parameter will not be used
to 254 with a maximum of 30
or displayed
thermostat per VGG
Temporary occupancy time
Temporary occupancy time with occupied mode
Default value = 3 hours
setpoints when override function is enabled
When the thermostat 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
Room air temperature sensor calibration Offset that can be added/subtracted to actual
Default value = 0.0 °F or °C
displayed room temperature
± 5.0 °F ( ± 2.5 °C )
Outside air temperature sensor
Offset that can be added/subtracted to actual
calibration
displayed outside air temperature
Default value = 0.0 °F or °C
± 5.0 °F ( ± 2.5 °C )
Number of heating stages. Applicable to Will revert the operation of 2 stages thermostat to
2 stage models only
single stage operation only when the second
Default value = 2 stages
heating step is not needed.
For heat pump models, H stage is
1 or 2 stages
limited to 1 stage only (W1 – Aux.
Heat)
Number of cooling stages
Will revert the operation of 2 stage thermostat to
2 stages model only
single stage operation only when the second
Default value = 2 stages
cooling step is not needed.
For heat pump models, HP stage
1 or 2 stages
selects the number of compressor
stages
Outside air temperature heating lockout Disables heating stage operation based on outdoor
Default value = 120 °F ( 49 °C )
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 )
Outside air temperature mechanical
Disables cooling stage operation based on outdoor
cooling lockout.
air temperature.
Default value = -40 °F ( -40 °C )
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 )
18
2/4event
Number of events configuration
Default value = 2 event
aux cont
Auxiliary contact configuration
Default value = N.O. normally open
Prog rec
Progressive recovery enabled
Default value = Off
Progressive recovery is automatically
disabled if DI 1 and / or DI 2 are
configured remote NSB
2 events, will set up programming for the following
Event 1 is for Occupied setpoints
Event 2 is for Unoccupied setpoints
4 events, will set up programming 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
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 thermostat 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.
Contact
Contact
Configured
occupied
unoccupied
status
status
N.O.
Closed
Opened
N.C.
opened
Closed
Off, = no progressive recovery
The programmed occupied schedule time is the
time at which the system will restart.
On, = progressive recovery active.
The programmed occupied schedule time is the
time at which the desired occupied temperature will
be attained. The thermostat 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.
high bp
low bp
Heat Pump models only
High balance point
In Heating or Auto mode, it is the outside air
Default value = 90 °F ( 32.0 °C )
temperature value at which the auxiliary heat will be
Function will only be enabled if OS
cut off. Above that value, only the heat pump will be
(outside air temperature sensor) is
used to maintain the heating setpoint
connected.
34 to 90 °F ( 1.0 to 32.0 °C )
Low balance point
In Heating, Cooling or Auto mode, it is the outside
Default value = -12 °F ( -24 °C )
air temperature value at which the heat pump
Function will only be enabled if OS
operation will be cut off. Below that value, only the
(outside air temperature sensor) is
auxiliary heat will be used to maintain the heating
connected.
setpoint
-40 to 30 °F ( -40 to -1.0 °C )
19
Comf/eco
Comfort or economy mode
Default value = Comfort
re valve
Reversing valve operation O/B
Default value = O
comp/aux
Compressor/auxiliary interlock
Default value = Off
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.
Heat pump reversing valve operation
O will energize the valve in cooling operation.
B will energize the valve in heating operation
O or B
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 thermostat bypasses:
• The heating lockout
• The cooling lockout
• The low balance point
•
The high balance point
Heat Pump model when set in Emergency mode bypasses heating lockout and permits auxiliary heating whenever
a heating demand occurs.
20
Chngstpt
min pos
C mech
Economizer Model only
In Cooling mode.
Changeover setpoint
The outside air temperature value at which the
Default value = 55 °F ( 13.0 °C )
cooling will be switched over from mechanical (
compressor ) to free cooling ( economizer )
14 to 70 °F ( -10.0 to 21.0 °C )
Minimum position
Outside air damper minimum position.
Will be active only when fan is on ( G terminal )
Default value = 0%
and the internal or remote scheduling is in
Outside air
occupied mode.
0% 5% 10% 15% 20% 25% 30%
percentage
When internal or remote scheduling is in
Setting for 0-10
0% 5% 10% 15% 20% 25% 30% unoccupied mode and/or fan is off, minimum
Vdc Autuator
position will be set to 0%
Setting for 2-10 0 to
24% 28% 32% 36% 40% 44%
Vdc Autuator
20%
0 to 100 % = 0 to 10 Vdc output range
Mechanical cooling allowed
In Cooling mode.
Allows the operation of the mechanical cooling if
Default value = Off
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.
21
PAN ID
Personal Area Network
Identification
Default value = 0
Range is: 0 to 500
Wireless Model only
Conditional parameter to Wireless models
(VT76xxX1000W)
This parameter will only appear when a wireless
network adapter is present. If the thermostat is
installed as a stand-alone 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 thermostats to a single specific
Viconics wireless gateway ( VWG ) For every
thermostat reporting to a gateway ( maximum of 30
thermostats per gateway ), be sure you set the SAME
PAN ID value both at the gateway and the
thermostat(s).
The default value of 0 is NOT a valid PAN ID. The valid
range of available PAN ID is from 1 to 500
Channel
Channel selection
Default value = 10
Range is: 10 to 26
Conditional parameter to Wireless models
(VT76xxX1000W)
This parameter will only appear when a wireless
network adapter is present. If the thermostat is
installed as a stand-alone unit or with a BACnet or
Echelon adapter, this parameter will not be used or
displayed
This parameter (Channel) is used to link specific
thermostats to specific Viconics wireless gateway(s) (
VWG ) For every thermostat reporting to a gateway (
maximum of 30 thermostats per gateway ), be sure
you set the SAME channel value both at the gateway
and the thermostat(s).
Viconics recommends using only the 2 last
channels ( 25-2575MHz and 26-2580MHz )
Get From
Thermostat Get From another
device configuration utility
Default value = 0
Range is: 0 to 254
The default value of 10 is NOT a valid channel. The
valid range of available channel is from 11 to 26
Conditional parameter to Wireless models
(VT76xxX1000W)
This parameter / function is not currently supported by the
wireless thermostats.
22
Troubleshooting guide
All models
Symptom
No display on the
thermostat
Possible Cause
Absent or incorrect supply
voltage
Overloaded power
transformer
Corrective Action
1. Check power supply voltage between C & RC to be
from 19-30 Vac
2. Check for tripped fuse or circuit breaker
Verify that the transformer used is powerful enough
(enough VA’s) to supply all controlled devices
including the thermostat
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 original value
after a certain time
period
Temporary setpoint option
selected
1. The thermostat 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
Permanent setpoint
Thermostat will not call
for heating
Wrong mode selected
Thermostat in Unoccupied
mode
Anticycle delay active
Select heating mode
Select Occupied Hold in Schedule hold or Override to
force the thermostat Occupied heating setpoint
Wait, the anticycling period will end and the
equipment will start
Raise the Heating setpoint
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
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
Heating setpoint is satisfied
Heating lockout attained
Wiring error
Thermostat will not call
for cooling
Wrong mode selected
Thermostat in Unoccupied
mode
Anticycle delay active
Cooling setpoint is satisfied
Cooling lockout attained
Wiring error
Select cooling mode
Select Occupied Hold in Schedule hold or Override to
force the thermostat Occupied cooling setpoint
Wait, the anticycling period will end and the
equipment will start
Lower the cooling setpoint
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
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 thermostat will not
turn on the fan
Wrong mode selected
Wiring error
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
Digital display shows
missing digits or erratic
segments
Defective display
Replace thermostat
23
Troubleshooting guide
Heatpump models
Auxiliary heat does not
operate
Wrong mode selected
Thermostat in Unoccupied
mode
Anticycle delay active
Heating setpoint is satisfied
High Balance point attained
Heating lockout attained
Wiring error
Heat pump does not
operate in heating
mode
Select emergency heat mode
Select Occupied Hold in Schedule hold or Override to
force the thermostat Occupied heating setpoint
Wait, the anticycling period will end and the
equipment will start
Raise the Heating setpoint
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
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
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 mode selected
Select heating mode
Thermostat in Unoccupied
mode
Anticycle delay active
Select Occupied Hold in Schedule hold or Override to
force the thermostat Occupied heating setpoint
Wait, the anticycling period will end and the
equipment will start
Raise the Heating setpoint
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
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
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
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.
Heating setpoint is satisfied
Low Balance point attained
Heating lockout attained
Wiring error
Wrong reversing valve
configuration
24
Specifications
Thermostat power requirements:
Operating conditions:
Storage conditions:
Sensor:
Resolution:
Control accuracy:
Occupied and unoccupied setpoint range
cooling:
Occupied and unoccupied setpoint range
heating:
Room and outdoor air temperature range
Proportional band for room temperature control:
Digital inputs:
Contact output rating:
Economizer analog output rating:
Economizer analog output accuracy:
Wire gauge
Dimensions:
Approximate shipping weight:
Agency Approvals all models:
Agency Approvals Stand-Alone, BACnet & LON
models
19-30 Vac 50 or 60 Hz; 2 VA ( RC & C ) Class 2
RC to RH jumper 2.0 Amps 48 VA maximum
0 °C to 50 °C ( 32 °F to 122 °F )
0% to 95% R.H. non-condensing
-30 °C to 50 °C ( -22 °F to 122 °F )
0% to 95% R.H. non-condensing
Local 10 K NTC thermistor
± 0.1 °C ( ± 0.2 °F )
± 0.5 ° C ( ± 0.9 °F ) @ 21 °C ( 70 °F ) typical calibrated
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 )
Both outputs: 1.1°C ( 2.0°F )
Relay dry contact only across C terminal to DI1 or DI2
Each relay output: ( Y1, Y2, G, W1, W2 & AU )
30 Vac, 1 Amp. maximum
30 Vac, 3 Amp. in-rush
0 to 10 Vdc into 2KΩ resistance min.
± 3% typical
18 gauge maximum, 22 gauge recommended
4.94” x 3.38” x 1.13”
0.75 lb ( 0.34 kg )
UL: UL 873 (US) and CSA C22.2 No. 24 (Canada), File E27734
with CCN XAPX (US) and XAPX7 (Canada)
Industry Canada: ICES-003 (Canada)
FCC: Compliant to CFR 47, Part 15, Subpart B, Class A (US)
CE: EMC Directive 89/336/EEC (Europe Union)
C-Tick: AS/NZS CISPR 22 Compliant (Australia / New Zealand)
Supplier Code Number N10696
Agency Approvals Wireless models FCC: Compliant to: Part 15, Subpart C
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO
CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT
ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.
Drawing & dimensions
Important notice
All
VT7600
series
controls are
for use as
operating controls only and
are not safety devices. These
instruments have undergone
rigorous tests and verifications
prior to shipment 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
alarm system to protect the
entire system against such
catastrophic
failures.
Tampering of the devices or
miss application of the device
will void warranty.
Fig.13 – Thermostat dimensions
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