Honeywell RLV3120 User Manual

Non-programmable

R LV3120

Thermostat

Owner’s Manual

Read and save these instructions.

For help please visit yourhome.honeywell.com

Application

This thermostat can be used to control an electric heating system such as a baseboard heater or a convector.

The thermostat CANNOT be used with:

• a resistive load under 0.83 A

• a resistive load over 8.3 A

• a system driven by a contactor or a relay (inductive load)

• a fan-forced heating system (e.g. : fan-forced convector)

• a central heating system.

WARNING Electrical Shock Hazard.

This thermostat is a line voltage control (120–240 Volts). Do not install it if you are not completely familiar with house wiring. If handled improperly, there is risk of electric shock hazard, which may cause serious injury or death.

Do you need assistance? We are here to help.

Call 1-800-468-1502 for wiring assistance before returning the thermostat to the store.

ATTENTION: MERCURY RECYCLING NOTICE

NO MERCURY

This product does not contain mercury. However, this product may replace a product that contains

SUPPLIED PARTS

• One (1) thermostat

• Two (2) 6-32 mounting screws

• Two (2) solderless connectors

mercury. Mercury and products containing mercury should not be discarded in household trash.

For more information on how and where to properly recycle a thermostat containing mercury in the United States, please refer to the Thermostat Recycling Corporation at www.thermostat-recycle.org.

For mercury thermostat recycling in Canada, please refer to Switch the Stat at www.switchthestat.ca

Temperature display and setting

Appears when the

setpoint is displayed

Temperature display

Heating intensity

(No image appears

when heating is off.)

The thermostat normally displays the actual (ambient) temperature.

• To view the setpoint temperature, briefly press the Up or Down button. The

setpoint will be displayed for 5 seconds.

• To change the setpoint temperature, press the Up or Down button until the

desired value is displayed.

indicator

Up button Down button

Removing the faceplate

WARNING TURN OFF POWER TO THE HEATING SYSTEM AT THE MAIN POWER PANEL TO AVOID ELECTRIC SHOCK.

Loosen the screw holding the faceplate to the base. The screw cannot be completely removed and remains captive on the base. Remove the faceplate from the base by pulling the bottom half.

Wiring

Connect either one of the thermostat wires to the heater wire and the other one to the power supply wire using solderless connectors for copper wires.

NOTE: All cables and connections must conform to the local electrical code. Special CO/ALR solderless connectors must be used when connecting with aluminium conductors.

Power supply

4-wire Installation2-wire Installation

Installing the faceplate

Install the base onto an electrical box.

Reinstall the faceplate on the base and secure it in place with the screw.

NOTE: Keep the air vents of thermostat clean and unobstructed at all times.

Selecting the temperature display format

To select the temperature display format:

1. Press the Up and Down buttons for three seconds. The format currently used will be indicated on the screen.

2. Press the Up or Down button to change the format.

3. Press the Up and Down buttons for one second (or wait for one minute) to return to the normal display.

Troubleshooting

Problem Solution(s)

Thermostat is hot. This is normal.

Displayed temperature is wrong.

Display disappears and reappears after a few minutes.

Remediate if any the following conditions exists:

• The thermostat is exposed to air draft.

• The sticker on the thermostat’s screen has not been removed.

• The thermostat is located near or above a heat source such as a light dimmer.

The thermal protection device on the heater has temporarily opened. This can happen if the heater is obstructed by furniture or curtain and has overheated, or if the heater’s thermal protection device is too sensitive.

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