1
INSTALLATION:
This device should be installed and serviced by a qualified technician.
Mount this control ONLY to a grounded metallic box.
1.
Caution: HIGH VOLTAGE
- Disconnect power supply before
servicing.
2.
All wiring must comply with applicable codes and ordinances.
All wiring must have insulation rated 600VAC minimum.
Supply wires must be suitable for at least 105°C.
Suitable for insulated walls.
3.
A thorough check-out of the system should be made after
installation is complete.
4.
If fan motor is larger than 1/4 HP and/or electric heaters are used
for heating, additional power relays will be required
5.
If retrofitting old thermostat, remove old thermostat from the
junction box, carefully noting the wire connections on the old unit.
Record wire color and terminal legends in spaces provided.
Disconnect old thermostat and remove any existing backplate or
mounting plate.
6.
Install the mounting bracket to the junction box with the two long
mounting screws provided.
Note:
If application involves a double ganged junction box,
a backplate will be required for a complete installation.
Please consult your supplier.
7.
From the wire chart found in step 5, assign, according to function,
the cable wire colors to the thermostat wire legend provided below.
Note: The control feed and the load feed will be connected together
for the 4-pipe installation. If this is a new installation, record the cable
wire colors in the thermostat legend provided below.
8.
Connect the thermostat wires to the cable wires recorded in step 7.
Be sure to connect green wire to earth ground.
9.
Push the wires into the junction box. Tilt
the thermostat so that the bottom of the
thermostat is resting on the mounting tabs
of the mounting plate. Push the top of the
thermostat towards the wall and secure into
place with the self-tapping screw as shown
to the right.
10.
Turn power on. At start up, the low fan will automatically run for
three minutes to cycle room air.
If cooling or heating is required, it may become active after the
first 30 seconds of fan run time.
Application:
This thermostat is a line voltage heating and cooling digital temperature
control designed to operate either 2 or 4-pipe fan coil systems, but it
can also be configured to operate line voltage PTHP/PTAC systems.
This thermostat also has the capability to receive and transmit to
EnOcean enabled wireless products. Please see programming
instructions for more details. Switching of load circuits is through relay
contacts (see specifications for applicable load ratings). The fan
cycles on/off with calls for heating or cooling or can be on continuously
in either low or high speed when configured as a heat pump or on
continuously in either low, medium or high speed when configured as
a fan coil. The control can be placed in economy mode or stop mode
with 40°F freeze protection. This thermostat operates at a single
setpoint with automatic changeover.
Specifications:
Temperature Monitor Range:
32.2°F to 99.9°F (0.0°C to 37.7°C)
Setpoint Range:
60.0°F to 85.0°F (15.5°C to 29.5°C)
*Setpoint:
72.0°F (22.0°C)
*Comfort Limits:
65.0°F (18.5°C) cooling
85.0°F (29.5°C) heating
Display Format:
Liquid Crystal Display (LCD)
Backlight:
EL blue green
Sampling Rate:
Every 15 seconds
Accuracy:
± 1°F (0.5°C)
Power Source:
120VAC to 277VAC (102 minimum to 304 maximum)
Load Rating:
*Fan Control:
Fan Coil - Selectable:
Auto cycle, Low, Medium, High, Economy, Stop
Heat Pump - Selectable:
Auto cycle, Low, High, Economy, Stop
Heat/Cool Control:
Fan Coil:
1 heat and 1 cool circuit
Heat Pump:
2 heat and 1 cool circuit
*Economy Limits:
Maintains room temperature between 60.0°F and 85.0°F
(15.5°C and 29.5°C) when thermostat is in economy (ECON) mode
*Fan Purge Timer:
30 seconds
Anti-short Cycle:
3 minute hold in no call state at all times
*Cycle Rate:
Fan Coil:
8 cycles per hour
Heat Pump:
6 cycles per hour
* Differential:
0.4°F
* Display Mode:
Setpoint temperature
* System Function:
Heat and Cool
*See Field Programming Instructions
Old thermostat
wire function
Power Feed
Load Feed
Neutral
Heat
Cool
Low Fan
Medium Fan
High Fan
Reverse Valve
Cable
wire color
New Stat Wire
Function
Control Feed
Load Feed
Neutral
Heat
Cool
Low Fan
Medium Fan
High Fan/Reverse Valve
Earth Ground
New Stat Wire
Color
Black
Orange
White
Red
Blue
Yellow
Yellow/Black
Yellow/Red
Green
Cable Wire Color
Standard
Junction
box
Voltage
120VAC
1/4HP FLA
Heat/Cool
Pilot Duty
125VA
(1.0A)
5.8A
208VAC
220 - 240VAC
125VA
(0.6A)
125VA
(0.52A)
3.1A
277VAC
125VA
(0.45A)
2.4A
2.9A
1/4 HP 3 speed or 2 speed fan motors:
Voltage
120VAC
1/6HP FLA
Heat/Cool
Pilot Duty
240VA
(2.0A)
4.4A
208VAC
220 - 240VAC
240VA
(1.15A)
240VA
(1.0A)
2.4A
277VAC
240VA
(0.87A)
1.9A
2.2A
Single speed fan motors:
Installation Guide
VTST-LNV WiSPER Thermostat
Line Voltage