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RLV310  
User Guide  
Electronic Thermostat  
NOTE: All cables and connections must conform to the local electri-  
cal code. Special CO/ALR solderless connectors must be used when  
connecting with aluminium conductors.  
Heating power  
indicator  
Temperature  
display  
Temperature  
adjustment  
buttons  
2
-wire installation  
1
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Description  
n
This thermostat can be used to control a electric heating system such  
as an baseboard heater, a radiant ceiling, a radiant floor, a convector,  
etc. See minimum and maximum load requirement in section 5.  
The thermostat cannot be used with the following:  
4
-wire installation  
a resistive load under 2 A  
systems driven by a contactor or a relay (inductive load)  
fan-equipped heating systems  
central heating systems  
SUPPLIED PARTS  
One (1) thermostat  
Align and affix the base to the  
electrical box.  
Two (2) 6-32 mounting screws  
Two (2) solderless connectors  
2
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Installation  
o
TURN OFF POWER OF THE HEATING SYSTEM AT THE MAIN  
POWER PANEL TO AVOID ELECTRIC SHOCK.  
Loosen the screw holding the control module to the base. The screw  
cannot be completely removed. Lift the control module to remove it  
from the base.  
Set the switch at the back of the remov-  
able part of the thermostat to °C or °F.  
Replace the front part of the thermostat  
on the base and secure it in place with  
the screw.  
Make the appropriate connections. Please note that the thermostat  
wires are non-polarized; either wire can be connected to either termi-  
nal.  
Keep air vents of thermostat clean and  
free from obstructions.  
RLV310  
69-1854  
6/27/05  
1/2  
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7.  
Temperature Display and Setting  
The thermostat normally displays the actual (ambi-  
Warranty  
;
Honeywell warrants this product, excluding battery, to be free from  
defects in the workmanship or materials, under normal use and ser-  
vice, for a period of one (1) year from the date of purchase by the  
consumer. If at any time during the warranty period the product is  
determined to be defective or malfunctions, Honeywell shall repair or  
replace it (at Honeywell's option).  
p
ent) temperature.  
To view the setpoint temperature, press once on  
either of the temperature adjustment buttons.  
The icon  
appears during the setpoint display.  
To change the setpoint temperature, press the appropriate but-  
ton until the desired value is displayed.  
If the product is defective,  
(i) return it, with a bill of sale or other dated proof of purchase, to  
the place from which you purchased it, or  
4
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(
ii) call Honeywell Customer Care at 1-800-468-1502. Customer  
Care will make the determination whether the product should be  
returned to the following address: Honeywell Return Goods,  
Dock 4 MN10-3860, 1885 Douglas Dr N, Golden Valley, MN  
Power Outage  
During a power outage, the setpoint is stored in memory.  
q
5
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5
5422, or whether a replacement product can be sent to you.  
Specifications  
Supply: 120/240 VAC, 50/60 Hz  
r
This warranty does not cover removal or reinstallation costs. This  
warranty shall not apply if it is shown by Honeywell that the defect or  
malfunction was caused by damage which occurred while the prod-  
uct was in the possession of a consumer.  
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Minimum load: 2 A (resistive only)  
5
2
00 W @ 240 VAC  
50 W @ 120 VAC  
Honeywell's sole responsibility shall be to repair or replace the prod-  
uct within the terms stated above. HONEYWELL SHALL NOT BE  
LIABLE FOR ANY LOSS OR DAMAGE OF ANY KIND, INCLUDING  
ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING,  
DIRECTLY OR INDIRECTLY, FROM ANY BREACH OF ANY WAR-  
RANTY, EXPRESS OR IMPLIED, OR ANY OTHER FAILURE OF  
THIS PRODUCT. Some states do not allow the exclusion or limitation  
of incidental or consequential damages, so this limitation may not  
apply to you.  
-
Maximum load: 12.5 A (resistive only)  
3
1
000 W @ 240 VAC  
500 W @ 120 VAC  
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Display range: 0 to 50°C (32 to 122°F)  
Setpoint range: 5 to 30°C (40 to 85°F)  
Storage: -20 to 50°C (-4 to 120°F)  
Approval: c UL us  
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEY-  
WELL MAKES ON THIS PRODUCT. THE DURATION OF ANY  
IMPLIED WARRANTIES, INCLUDING THE WARRANTIES OF  
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PUR-  
POSE, IS HEREBY LIMITED TO THE ONE-YEAR DURATION OF  
THIS WARRANTY. Some states do not allow limitations on how long  
an implied warranty lasts, so the above limitation may not apply to  
you.  
6
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s Troubleshooting  
PROBLEM  
SOLUTIONS  
This is normal. Under normal operation, the  
thermostat housing can reach a temperature  
between 35°C (95°F) and 40°C (104°F).  
Thermostat is hot  
This warranty gives you specific legal rights, and you may have other  
rights which vary from state to state.  
Heater is always  
On.  
If you have any questions concerning this warranty, please write Hon-  
eywell Customer Relations, 1985 Douglas Dr, Golden Valley, MN  
The thermostat has not been correctly wired.  
5
5422 or call 1-800-468-1502. In Canada, write Retail Products  
Thermostat indi-  
cates that heating is  
On, but the heater  
is not On.  
ON15-02H, Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive,  
Scarborough, Ontario M1V4Z9.  
The thermostat has not been correctly wired.  
The thermostat is exposed to air draft. Elimi-  
8
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Customer assistance  
Displayed tempera- nate the draft.  
ture is wrong  
If you have any questions about the operation of your thermostat,  
please go to http://yourhome.honeywell.com, or call Honeywell  
Customer Care toll-free at 1-800-468-1502.  
The sticker on the thermostat’s screen has  
not been removed.  
The thermal protection device on the heater  
is open. This can happen after a power fail-  
ure or or if the heater is obstructed by furni-  
ture or curtains.  
Display disappears  
and reappears after  
a few minutes  
Display looks faded The heating system is less than the required  
when heating is  
activated  
minimum load. This thermostat cannot be  
used below that rating.  
RLV310  
69-1854  
6/27/05  
2/2