Vykon VT7600 Series User manual

PIR Ready VT7600 Series
Programmable & Non-Programmable Thermostats
For Commercial HVAC Applications
September 1, 2010
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, economizer control logic has been integrated onto the
thermostat for use with proportional damper economizer actuators.
The thermostats are also compatible with the new Vykon PIR cover accessories. Thermostats equipped with
a PIR cover provide advanced active occupancy logic, which will automatically switch occupancy levels from
Occupied to Unoccupied as required by local activity being present or not. This advanced occupancy
functionality provides advantageous energy savings during occupied hours without sacrificing occupant
comfort. All thermostats can be ordered with or without a factory installed PIR cover ( see ordering notes
below ).
The additional following documentation is available:
-VYKONStat PIR Application Guide
-VYKONStat PIR Cover Assembly Installation Guide
-VYKONStat PIR Ready VT76xx Series Thermostat BACnet Integration Guide
-VYKONStat PIR Ready VT7600 LonWorks Integration Guide
-VYKONStat Wireless Controller Application Guide
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) VT7652A5x28(X) VT7652B5x28(X) VT7656B5x28(X) VT7652H5x28(X)
Model (non-programmable) VT7600A5x28(X) VT7600B5x28(X) VT7605B5x28(X) VT7600H5x28(X)
Ordering Information Notes:
-(X) model number represents available communication options: X=none for Stand-alone, X=B for BACnet MS-TP, X=E for Echelon and X=W for
Wireless
-Thermostats can be ordered with a factory installed PIR cover. Please use (5528) extension instead of the (5028) only extension.: Ex. VT7600B5528E.
-Thermostats ordered without a PIR cover can be retrofitted with a separate PIR accessory cover afterwards when required
Features and benefits
Features Benefits
•Advanced occupancy functions ⇒Through the network or smart local occupancy sensing
•Ready for PIR accessory cover ⇒Fully integrated advanced occupancy functionality with
a PIR accessory cover
•Ready for PIR accessory cover ⇒Fully integrated advanced occupancy functionality with
a PIR accessory cover
•2 di
g
ital in
p
uts ⇒Adds functionalit
y
•Smart fan o
p
eration ⇒Saves ener
gy
durin
g
ni
g
ht mode
•Uni
q
ue confi
g
uration ke
y
with
p
assword
p
rotection ⇒Minimizes
p
arameter tam
p
erin
g
•Lockable ke
yp
ad ⇒Tam
p
er
p
roof, no need for thermostat
g
uards
•6 hour reserve time for clock ⇒No need to re
p
ro
g
ram da
y
/time after
p
ower shorta
g
e
•Remote room and outdoor tem
p
erature senso
r
⇒Increase flexibilit
y
and functionalit
y
•Auxiliar
y
out
p
ut ⇒Can be used for li
g
htin
g
and/or economizer override
•Discharge air sensor ⇒Can be used to monitor unit efficiency
•Intuitive, menu-driven programming (7 day, 2/4 events -
on programmable models only)
⇒Can be used for all types of establishments
•Economizer out
p
ut 0-10 Vdc economizer models onl
y
⇒Excellent retrofit o
pp
ortunities

2
•3 Heat/2 Cool (on heat pump models only) ⇒Support single and two stages heat pump with one
auxiliary heat stage

3
Theory of operation
The VT7600 uses a Vykon 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.
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.
- 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.
-Fan lock: used in conjunction with a local air flow
sensor connected to the input. Locks out the
thermostat heating and cooling action and displays
a local alarm if no air flow is detected 10 seconds
after the fan ( G terminal ) is energized.
•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.

4
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) Location:
1- Should not be installed on an outside wall.
2- Must be installed away from any heat source.
3- Should not be installed near an air discharge grill.
4- Should not be affected by direct sun radiation.
5- 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.
•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.
Location of PCB retaining tabs
Re-install terminal blocks
Thermostat assembly
(VT7600B5x28 shown)
Fig.6
Fig.3
Fig.5
Fig.4

5
Wiring identification & screw terminal arrangement
Multista
g
e 1H / 1C Heat Pum
p
Part Number VT7656B VT7605B VT7652B VT7600B VT7652A VT7600A Part Number VT7652H VT7600H
Programmable Yes No Yes No Yes No Programmable Yes No
To
p
left terminal block To
p
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
To
p
ri
g
ht terminal block To
p
ri
g
ht 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
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.
EC AU D1 D2 RS Scom OS MS
Y
2
Y
1 G RC CRH W1 W2
O/B
5 pole left top connector 3 pole left top connector
8 pole bottom connector

6
Detailed wiring diagrams for selected models
VT7656B5X28(X)
2 Heat / 2 Cool / Economizer / Programmable
Heat
Stage 2
Cool
Stage 1
System wiring
Thermostat internal wiring
Jumper J1 T1
24 Vac
Cool
Stage 2
Y2 Y1
Jumper J1
See note 1
(previous
page)
Fan
RCG C
Heat
Stage 1
W1RH W2
Auxiliary
Output
Field contacts
Com24V
Remote
Outdoor
Sensor
Digital Input #2
Digital Input #1
Remote
Room
Sensor
0-10 Vdc
EC AU DI1 DI2 RS
Remote
Mixed Air
Sensor
MSScom OS
VT7652H5X28(X)
Heat pump / Programmable
A
uxiliar
y
Heat
W1
System wiring
Jumper J1
Thermostat internal wiring
Compressor
Stage 1
24 Vac
T1
Compressor
Stage 2
Y2
Jumper J1
See note 1
(previous
page)
Fan
G
Y1 RC CRH
Remote
Room
Sensor
Field contacts
Reversing
Valve
Digital Input #2
Digital Input #1
A
uxiliar
y
Output
O/B
A
UDI1 DI2 ScomRS
Remote
Outdoor
Sensor
Remote
Mixed Air
Sensor
MSOS
Thermostat Terminals - VT7652H5x00
Y2
DI1 DI2
A
U
Y1 RCGO/B
OSRS Scom
RH
CW1
MS
Thermostat Terminals -VT7656B5x00
Y2
EC
RCGY1
A
UDI1 DI2
W2
MS
W1RH
C
Scom
RS OS

7
AU
D1
RS
Scom
C
D2
Scom
RS
Scom
RS
C
DI
Aux
Scom
RS
Scom
RS
Scom
RS
Scom
RS
VT7600 Series
Thermostat
2x S3010W1028 and 1x S3020W1028
Remote wiring 3 sensors
S2-1 = OFF / S2-2 = OFF
AU
D1
RS
Scom
C
D2
Scom
RS
Scom
RS
C
DI
Aux
Scom
RS
Scom
RS
Scom
RS
Scom
RS
C
DI
Aux
VT7600 Series
Thermostat
1x S3010W1028 and 2x S3020W1028
Remote wiring 3 sensors
S2-1 = OFF / S2-2 = OFF
Remote sensor accessories
Model no. Description
S3010W1028 Wall mounted temperature sensor
S3020W1028 Wall mounted temperature sensor with override button and occupancy status LED
S2020E1028 Outdoor temperature sensor
S2060A1028 Averaging temperature sensor
S2000D1028 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 – S3020W1028
wall mounted sensor
Wiring example of single remote room sensor:
Wiring examples of 2 remote room sensors for averaging applications:
Wiring examples of 3 remote room sensors for averaging applications:
Notes for averaging applications:
•S3010W1028 and S3020W1028 can be
mixed matched.
•S3010W1028 and S3020W1028 are to
be wired in parallel.
•Respect the dip switch setting in each
remote sensor.
AU
D1
RS
Scom
C
D2
Scom
RS
Scom
RS
C
DI
Aux
Scom
RS
Scom
RS
OR
AU
D1
RS
Scom
C
D2
Scom
RS
Scom
RS
C
DI
Aux
Scom
RS
Scom
RS
C
DI
Aux
AU
D1
RS
Scom
C
D2
Scom
RS
Scom
RS
Scom
RS
Scom
RS
C
DI
Aux
VT7600 Series
Thermostat
1x S3020W1028
Remote wiring 1 sensor
S2-1 = ON / S2-2 = ON
S3010W1028
Remote wiring 1 sensor
S2-1 = ON / S2-2 = ON
VT7600 Series
Thermostat
2x S3020W1028
Remote wiring 2 sensors
S2-1 = OFF / S2-2 = ON
AU
D1
RS
Scom
C
D2
Scom
RS
Scom
RS
Scom
RS
Scom
RS
2x S3010W1028
Remote wiring 2 sensors
S2-1 = OFF / S2-2 = ON
VT7600 Series
Thermostat
VT7600 Series
Thermostat
1x S3010W1028 and 1x S3020W1028
Remote wiring 2 sensors
S2-1 = OFF / S2-2 = ON
12
ON
Dip switch
setting for:
1 senso
r
S2-1 = ON
S2-2 = ON
12
ON
Dip switch
setting for:
2 sensors
S2-1 = OFF
S2-2 = ON
12
ON
Dip switch
setting for:
3 sensors
S2-1 = OFF
S2
-
2
=
OFF

8
Temperature vs resistance chart for 10 Kohm NTC thermistor
(R25°C = 10KΩ±3% - B25/85°C = 3975K±1.5%)
ºC ºF Kohm ºC ºF Kohm ºC ºF Kohm ºC ºF Kohm ºC ºF Kohm
-40 -40 324.3197 -20 -4 94.5149 0 32 32.1910 20 68 12.4601 40 104 5.3467
-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
-23 -9 112.5028 -3 27 37.5056 17 63 14.2629 37 99 6.0351 57 135 2.7886
-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
S3010W1028 remote wall
mounted temperature
sensor, dip switch location
S2000D1028, 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
S2060A1028, 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.
S2020E1028, 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 S2000D1028, S2060A1028 and S2020E1028
Remote wiring 1 sensor Remote wiring 4 sensors
10 K 10 K 10 K 10 K 10 K
Scom
MS
Scom
OS
Scom
RS or
or Scom
MS
Scom
OS
Scom
RS or
or
(
Fig.9 – Sensor dip switch location
12
ON
Location of dip switch

9
User menu flow chart:
NOTE: Prompts may not all be present depending on model selected
Schedule
set? Y/N
Sys mode
set? Y/N Clock
set? Y/N
Temperat
set? Y/N Schedule
hold Y/N Exit
menu Y/N
Unocc HT
set? Y/N °F/°C
set? Y/N
Heating
set? Y/N Unocc CL
set? Y/N
Cooling
set? Y/N
°C
°F
Exit?
Y/N
Temperature Temperature Temperature Temperature
MENU
12/24hrs
set? Y/N
12 / 24
Time
set? Y/N
Time
Day
set? Y/N
Day
Fan mode
set? Y/N
On
Smart
A
uto
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
Exit?
Y/N
Occupied
day? Y/N
Occupied
12:00 pm
Time
Unoccup
12:00 pm
Time
Occupied
day? Y/N
Occupied
12:00 pm
Time
Unoccup
12:00 pm
Time
Occupied
day? Y/N
Occupied
12:00 pm
Time
Unoccup
12:00 pm
Time
Occupied
day? Y/N
Occupied
12:00 pm
Time
Unoccup
12:00 pm
Time
Occupied
day? Y/N
Occupied
12:00 pm
Time
Unoccup
12:00 pm
Time
Occupied
day? Y/N
Occupied
12:00 pm
Time
Unoccup
12:00 pm
Time
Occupied
day? Y/N
Occupied
12:00 pm
Time
Unoccup
12:00 pm
Time
Resume
Occ Hold
Uno Hold
Exit?
Y/N
off
emergenc
heat
cool
auto
Override
schd Y/N
Cancel
ovrd Y/N
If status is:
Unoccupied
If status is:
TemporaryOccupiedTime,
A
ppears on stand-alone
models only

10
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 Clock status System mode Schedule status Outdoor
temperature Alarms
RoomTemp Monday Sys mode Occupied Outdoor Service
x.x °C or °F 12.00 AM auto x.x °C or°F
Sys mode
off Occupied hold Frost ON
Sys mode
heat Unoccup SetClock
Sys mode
cool Unoccup hold Filter
Sys mode emergenc
Override
Fan lock
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 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 programmable digital input ( DI1 or DI2 )
Filter Indicates that the filters are dirty as per one of the programmable digital input ( DI1 or DI2 )
Fan lock Indicates that the heating and cooling action are locked out due to a defective fan operation
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.
LED operation Heatpump models VT76xxH Multistage and single stage models
VT7600A, VT7652A, VT7600B & VT7652B Multistage economizer models VT7605B & VT7656B
Fan LED on When G Fan terminal operates When G Fan terminal operates When 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 Y1 terminal operate in cooling mode When Y1 terminal operate in cooling mode When Y1 terminal operate in cooling mode
and or economizer output is in function
Fig.11 – Heatpump, multistage and single stage models

11
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.
Ex.:
Press yes key to change cooling temperature setpoint
Use the up or down arrow to adjust cooling setpoint
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 Temperature
setpoints System mode
setting Fan mode setting Schedules setting Clock setting Schedule hold
Override
schd Y/N Temperat 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 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.

12
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 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 ↓
Use ▲▼ keys to set value, Yes key to confirm
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
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 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

13
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 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 programmed 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
Cool Heat Cool Heat
Daily
Setpoint 72 °F 70 °F 80 °F 62 °F Occupancy
Monday 7.00 AM 6.00 PM Day time only
Tuesday 7.00 AM 6.00 PM Day time only
Wednesday 7.00 AM 6.00 PM Day time only
Thursday 7.00 AM 6.00 PM Day time only
Friday 7.00 AM 6.00 PM Day time only
Saturday 12.00 PM * 12.00 PM * Unoccupied
Sunday 12.00 PM * 12.00 PM * 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 Period #1 - Event #1 Period #1 - Event #2
Occupied Unoccupied
Cool Heat Cool Heat
Daily
Setpoint 72 °F 70 °F 80 °F 62 °F Occupancy
Monday 8.00 AM 5.00 PM Day time only
Tuesday 8.00 AM 5.00 PM Day time only
Wednesday 8.00 AM 5.00 PM Day time only
Thursday 8.00 AM 5.00 PM Day time only
Friday 8.00 AM 5.00 PM Day time only
Saturday 12.00 AM ** 11.59 PM ** Occupied
Sunday 12.00 AM ** 11.59 PM ** 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.
Note: 12:00 PM = Noon
12:00 AM = Midni
g
ht

14
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 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 programmed 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 Heat Cool Heat Cool Heat Cool Heat Daily
72 °F 70 °F 80 °F 62 °F 72 °F 70 °F 80 °F 62 °F 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
* 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
Cool Heat Cool Heat Cool Heat Cool Heat Daily
72 °F 70 °F 80 °F 62 °F 72 °F 70 °F 80 °F 62 °F 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
*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)

15
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
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..

16
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
-If a password lockout is active, “Password” is prompted. Enter password value using the “up” and “down”
arrows and press “Yes” to gain access to all configuration properties of the thermostat. A wrong password
entered will prevent local access to the configuration menu.
-Once in the configuration menu, press the “No” button repetitively to scroll between all the available
parameters.
-When the desired parameter is displayed, press “Yes” to adjust it to the desired value using “up” and “down”
arrows. Once set, press “Yes” to scroll to the next parameter.
Configuration
parameters Significance Default value Adjustments
Pswrd Configuration parameters menu access
password
Default value = 0 ( no password
prompted )
This parameter sets a protective access password to
prevent unauthorized access to the configuration menu
parameters. A default value of “0” will not prompt a
password or lock the access to the configuration menu.
Range is: 0 to 1000
Com addr Thermostat networking address
Default value = 254
Range is: 0 to 254
Conditional parameter to BACnet MS-TP models
(VT76xxX5x28B)
Conditional parameter to Wireless models
(VT76xxX5x28W)
This parameter will only appear when a BACnet or
wireless network adapter is present. If the thermostat is
installed as a stand-alone unit or with an Echelon
adapter, this parameter will not be used or displayed
-For BACnet MS-TP models valid range to use is
from 1 to 127. Default value of 254 disables BACnet
communication for the thermostat.
-For wireless models valid range is 0 to 254 with a
maximum of 30 thermostat per VWG
PAN ID Personal Area Network Identification
Default value = 0
Range is: 0 to 500
Conditional parameter to Wireless models
(VT76xxX5x28W)
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 Vykon JACE
with wireless network adapter. For every thermostat reporting
to a JACE (maximum of 30 wireless thermostats), be sure you
set the SAME PAN ID value both at the JACE 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

17
Channel Channel selection
Default value = 10
Range is: 10 to 26
Conditional parameter to Wireless models
(VT76xxX5x28W)
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
a specific Vykon JACE with wireless network adapter. For
every thermostat reporting to a JACE (maximum of 30 wireless
thermostats ), be sure you set the SAME channel value both at
the JACE and the thermostat(s).
Vykon recommends using only the 2 last channels ( 25-
2575MHz and 26-2580MHz )
The default value of 10 is NOT a valid channel. The valid range
of available channel is from 11 to 26
DI 1
Digital input no.1 configuration
Open contact input = function not
energized
Closed contact input = function energized
Default value = None
None, No function will be associated with the input
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.
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
Fan lock, a back-lit flashing Fan lock alarm will be
displayed on the thermostat LCD screen when the input
is not energized. Used in conjunction with a local airflow
sensor connected to the input. Locks out the thermostat
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 Digital input no. 2 configuration
Default value = None
Same as above. It is possible to configure both inputs to
have the same function.
MenuScro Menu scroll
Default value = On = Scroll active
Removes the scrolling display and only present the room
temperature/humidity to the user. With this option
enabled, no status is given of mode, schedule and
outdoor temperature.
On = Scroll active
Off = Scroll not active

18
lockout Keypad lockout levels
Default value = 0 No lock
0 = No lock
1 = Low level
2 = High level
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
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
0Yes access Yes access Yes access Yes access Yes access Yes access Yes access Yes access
1 Yes access No access Yes access No access No access No access Yes access No access
2No access No access No access No access No access No access Yes access No access
pwr del Power-up delay
Default value = 10 seconds
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
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
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
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 = 2.0 °F ( 0.6 °C )
Adjust the proportional band used by the thermostat PI
control loop.
Warning. Note that the default value of 2.0 °F ( 0.6 °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 thermostat location is problematic and leads to
unwanted cycling of the unit. A typical example is a wall
mounted unit where the thermostat is installed between
the return and supply air feeds and is directly influenced
by the supply air stream of the unit.
Value F scale Pband C scale Pband
2 2 F 0.6 C
3 3 F 1.2 C
4 4 F 1.7 C
5 5 F 2.2 C
6 6 F 2.8 C
7 7 F 3.3 C
8 8 F 3.9 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.
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

19
Heat cph 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 )
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.
cool cph 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
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.
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
For multi stage models, fan control
applies to W1 & W2
For heat pump models, fan control
applies to W1 only (Emergency
heat)
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
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 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
cal RS Room air temperature sensor
calibration
Default value = 0.0 °F or °C
Offset that can be added/subtracted to actual displayed room
temperature
± 5.0 °F ( ± 2.5 °C )
cal OS Outside air temperature sensor
calibration
Default value = 0.0 °F or °C
Offset that can be added/subtracted to actual displayed
outside air temperature
± 5.0 °F ( ± 2.5 °C )
H stage Number of heating stages. Applicable
to 2 stage models only
Default value = 2 stages
For heat pump models, H stage is
limited to 1 stage only (W1 – Aux.
Heat)
Will revert the operation of 2 stages thermostat to single stage
operation only when the second heating step is not needed.
1 or 2 stages

20
C stage
Or
HP stage
Number of cooling stages
2 stages model only
Default value = 2 stages
For heat pump models, HP stage
selects the number of compressor
stages
Will revert the operation of 2 stage thermostat to single stage
operation only when the second cooling step is not needed.
1 or 2 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 thermostat 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 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
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 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.
Configured Contact occupied status Contact unoccupied status
N.O. Closed Opened
N.C. opened Closed