Honeywell RLV3100 Digital Thermostat Installation Guide
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Digital
Non-programmable
Thermostat
RLV3100
Owner’s Manual
Read and save these
instructions.
For help please visit
yourhome.honeywell.com
Application
The RLV3100 thermostat can be used to control an electric heating system such as an
electric baseboard heater, a radiant ceiling, a radiant floor, a convector, etc.
The thermostat cannot be used with the following:
•
•
•
•
•
a resistive load under 2 A
a resistive load over 12.5 A
Temperature display
systems driven by a contactor or a relay (inductive load)
fan-forced heating systems
central heating systems
Supplied Parts
Percentage of
heating time *
•
•
•
One (1) thermostat
Two (2) 6-32 mounting screws
Two (2) solderless connectors
100%
75–99%
50–74%
25–49%
1–24%
M35686
Temperature adjustment
buttons
* The thermostat displays the percentage of heating time required to maintain the desired
temperature. For example, is displayed when heating is activated 40 percent of the time.
| General | Details |
|---|---|
| Name | Honeywell RLV3100 Digital Thermostat Installation Guide |
| Make | Honeywell |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.82 MB |

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Honeywell RLV3100 Manual: Questions and Answers
Honeywell RLV3100 specifications
| Power supply | 240 VAC, 60 Hz |
| Maximum load | 3000 W |
| Setpoint range | 40 to 85°F (5 to 30°C) |
| Display range | 32 to 122°F ( 0 to 50°C) |
| Storage temperature | -4 to 120°F (-20 to 50°C) |
What wire connections does the Honeywell RLV3100 have?
The thermostat has two tinned copper wires for line and load connections. The wires are not polarized, so either wire can connect to power or load. Installation Guide, p. 2
What is the minimum resistive load the Honeywell RLV3100 supports?
Why does the display on my Honeywell RLV3100 look faded when heating is activated?
The heating system load is below the minimum requirement of 500 W (2 A resistive only). This thermostat cannot operate below that rating. Installation Guide, p. 5
What temperature range can the Honeywell RLV3100 display show?
32 to 122°F (0 to 50°C). Installation Guide, p. 5
How does the Honeywell RLV3100 setpoint range compare to its display range?
Display range is 32 to 122°F (0 to 50°C), but setpoint range is narrower at 40 to 85°F (5 to 30°C). Installation Guide, p. 5
Why does the Honeywell RLV3100 display disappear and reappear after a few minutes?
The thermal protection device on the heater opened temporarily. This occurs when the heater is blocked by furniture or curtains and overheats, or when the device is too sensitive. Installation Guide, p. 5
Honeywell RLV3100 compared with other Honeywell thermostats
| Specification | Honeywell RLV3100 | Honeywell RLV3150 | Honeywell RLV4300 | Honeywell RLV4305 |
|---|---|---|---|---|
| Power supply | 240 VAC, 60 Hz | 240 VAC, 60 Hz | 120/240 VAC, 60 Hz | 120/240 VAC, 60 Hz |
| Maximum load | 3000 W | 12.5 A (resistive only) 3000 W @ 240 VAC | 12.5 A (resistive only) | 14.6 A (resistive only) |
| Setpoint range | 40 to 85°F (5 to 30°C) | 5.0°C to 30.0°C (41°F to 86°F) | 5.0°C to 27.0°C (41°F to 81°F) | 41 °F to 86 °F (5.0 °C to 30.0 °C) |
| Display range | 32 to 122°F ( 0 to 50°C) | 0°C to 50.0°C (32°F to 122°F) | 0°C to 50.0°C (32°F to 99°F) | 32 °F to 99 °F (0 °C to 50.0 °C) |
| Storage temperature | -4 to 120°F (-20 to 50°C) | -20.0°C to 50.0°C (-4°F to 122°F) | -20.0°C to 50.0°C (-4°F to 120°F) | -4 °F to 120 °F (-20 °C to 50 °C) |




























