1
T186 Electronic Wall Sensor With Setpoint Adjustment
For Use With R842 Baseboard Relay
DESCRIPTION
The T186 series remote wall sensor with setpoint adjustment capability is
specifically designed to be used with Viconics’ R842 electric baseboard relays.
The unique design of the R842 permits solid state proportional and integral (PI)
temperature control via the T186, resulting in exceptional temperature control
accuracy (± 0.5 ºF).
The T186 can replace conventional electro-mechanical thermostats when used
with the R842. Advantages include increased comfort and energy savings.
Typical savings of 3-7% is possible and is attributed to the elimination of wasted
energy inherent in less accurate electromechanical thermostats. Its solid state
design permits the elimination of bimetal elements and mercury bulbs, which
simplifies the installation since there is no anticipator and no levelling required.
In addition, it is an environmentally friendly product.
A pleasing aesthetic design ensures a harmonious blend in most room decors.
The T186 can be directly mounted to any flush vertical surface or to a standard
2” x 4” electrical mounting box via two mounting screws. Celsius and Fahrenheit
models are available.
Using the T186 with the R842 relay will provide unmatched performance and
give years of trouble-free installation.
Fig.1 - T186 wall sensor with setpoint
adjustment
Fig.2 - R842 baseboard relay for electric
heaters
Features
Benefits
•
Electronic PI performance
⇒
Increased comfort , accuracy, and energy savings
•
Solid state design
⇒
Increased reliability
•
No bimetal elements
⇒
No need to worry about anticipator settings
•
No mercury bulbs
⇒
No levelling required; environmentally friendly
•
Fahrenheit or Celsius temperature scale
⇒
Can be sold world-wide
•
Elegant aesthetic design
⇒
Blends well in all environments
•
Mounts on any surface or standard electrical box
⇒
Increased flexibility
TABLE 1: ORDER CODE
Scale Range
Sensor model
Replacement cover
5 °C to 30 °C
T186C-01
C186C-01
40 °F to 90 °F
T186F-01
C186F-01
WIRING DIAGRAM
APPLICATION & WIRING
•
Use proper dip switch setting on R842 relay
•
Refer to each wiring caution
Viconics T186 PI Wall Sensor
Refer to Fig.3 for wiring diagram of T186 with
one R842 relay.
1 High voltage blue wire is always connected. R842
units are powered devices.
2
Provide overload protection and disconnect as
required.
3
Do not use 24 Vac terminal #1 as power supply to an
electronic thermostat. Use a separate transformer.
Fig.3 – Wiring diagram of T186 sensor with R842 relay
Note: refer to R842 manual for multiple relay application.
Junction box
Load side
RED
BLUE
Internal circuit
L1
L2 / N
T186
sensor
2 wire non polarized
Set both switch on relay
to
OFF
position
1
2
ON
3
2
1
BLACK
