Viconics R842 - Manual

1
R842 Electronic Relay For Electric Baseboards
• Built-in transformer
• Universal replacement part
• Compatible with electronic T186 room sensor
Description
Viconics’ innovative R842 electronic relay has been
designed for silent control of high voltage resistive
heater loads (120V to 600 Vac) from a low voltage
control circuit. Typical applications include control of
electric baseboard and cabinet heaters in commercial
buildings. Inductive motor loads can also be controlled
(120 and 240 Vac models only).
Using advanced microprocessor-based circuitry, the
R842 is capable of handling greater than 500,000 cycles
(typical). It has a built-in transformer and is compatible
with most industry standard electromechanical or
electronic thermostats with on/off outputs. A unique
feature of product is that it can operate with a value
priced Viconics’ T186 electronic PI (proportional and
integral) room thermostat with setpoint capability,
providing exceptional accuracy, comfort, and energy
savings.
Fig.1 - R842 relay for electric baseboards
Features Benefits
• Unique compatibility with Viconics’ own designer
electronic thermostat
⇒ Permits fully electronic PI control
⇒ Improved accuracy (+/-0.3ºC) and comfort
⇒ Energy savings
⇒ Aesthetically pleasing thermostat
• Reliable microprocessor-based design ⇒ Long life
• Compatible with all standard 24 V thermostats ⇒ Adds flexibility
• Constant 10 second time delay
⇒ Not affected by ambient temperatures typically
found in older, thermal type baseboard relays
• Built-in transformer
⇒ Less inventory to stock
⇒ Easier installation
• Broad voltage ranges available: 120, 208, 240,
277, 347, 600 Vac.
⇒ Covers most voltage applications
• Status LED
⇒ Confirms operation
⇒ Simplifies troubleshooting
• Silent operation ⇒ Will not disturb occupants
• Direct replacement of competitive models ⇒ Easy to retrofit
• Large resistive amperage load rating ⇒ Will handle the largest baseboards with ease
• Inductive ratings ⇒ Used to control motor loads (fans, pumps, etc)
• Compact enclosure ⇒ Fits inside baseboard
• Standard ½” male conduit bushing ⇒ Can be installed on most electrical junction boxes
• 2 year warranty ⇒ Assured dependability