ICM Controls SC2311L - User Manual

Specifications
Electrical rating: •24VAC(18-30VAC) 
 •4ampmaximumtotalload
 •1ampmaximumperterminal
Temperature control range: 45°Fto90°F(7°Cto32°C)Accuracy:±1°F(±0.5°C)
System congurations:2-stageheat,1-stagecool,heatpump,gas,oil,electric
Timing:Anti-shortCycle:4minutes
 BacklightOperation:5secondsaftermodechangeorbuttonpress
Terminations:R,C,W1/O/B,Y,W2,E,G
Important Safety Information
WARNING! : Always turn off power at the main power supply before installing, cleaning,
or removing thermostat.
•Thisthermostatisfor24VACapplicationsonly;donotuseonvoltagesover30VAC
•Donotshortacrossterminalsofgasvalveorsystemcontroltotestoperation;thiswilldamageyour
thermostatandvoidyourwarranty
•Allwiringmustconformtolocalandnationalelectricalandbuildingcodes
•Donotuseairconditioningwhentheoutdoortemperatureisbelow50degrees;thiscandamage
yourA/Csystemandcausepersonalinjuries
•Usethisthermostatonlyasdescribedinthismanual
ELECTRICAL SHOCK HAZARD
– Turn off power at the main service panel by removing
the fuse or switching the appropriate circuit breaker to the OFF position before
removing the existing thermostat.
1. Turnoffpowertotheheatingandcoolingsystembyremovingthefuseorswitchingthe
appropriatecircuitbreakeroff.
2. Removecoverofoldthermostat.Thisshouldexposethewires.
3. Labeltheexistingwireswiththeenclosedwirelabelsbeforeremovingwires.
4. Afterlabelingwires,removewiresfromwireterminals.
5. Removeexistingthermostatbasefromwall.
6. Refertothefollowingsectionforinstructionsonhowtoinstallthisthermostat.
To Remove Existing Thermostat
Package Contents/Tools Required
Package includes: SC2311Lthermostatonbase,thermostatcover,wiringlabels,screwsandwall
anchors,Installation,OperationandApplicationGuide
Tools required for installation:Drillwith3/16”bit,hammer,screwdriver
2 Heat/1 Cool
Manual Changeover
Hardwired
SC2311L
Non-Programmable Electronic Thermostat
Installation, Operation & Application Guide
For more information on our complete range of American-made
products – plus wiring diagrams, troubleshooting tips and more,
visit us at www.icmcontrols.com
• Congurable
• 2-Stage Heat/1-Stage Cool Systems
• Heat Pump Systems
• Backlit Display
• Field Temperature Calibration
• Status Indicator Light
• Relay Outputs
(minimum voltage drop in thermostat)
• Ideally Suited for:
–
Residential (New Construction/Replacement)
– Light Commercial
Parts Diagram
Down
button
Up
button
Leftswitch
Resetswitch
RESET
LEFT
RIGHT
FP
R C
W
O/B
Y
W2
E
G
Field
programming
pins
Rightswitch
Modeswitch
Fanswitch StatusLed
ELECTRICAL SHOCK HAZARD – Turn off power at the main service panel by removing
the fuse or switching the appropriate circuit breaker to the OFF position before
removing the existing thermostat.
IMPORTANT:Thermostatinstallationmustconformtolocalandnationalbuildingand
electricalcodesandordinances.
Note: Mount the thermostat about four feet above the oor. Do not mount the thermostat
on an outside wall, in direct sunlight, behind a door, or in an area affected by a vent
or duct.
1.Turnoffpowertotheheatingandcoolingsystembyremovingthefuseorswitchingtheappropriate
circuitbreakeroff.
2. Toremovecover,insertandtwistacoinorscrewdriverintheslotsontopofthethermostat.
3. Putthermostatbaseagainstthewallwhereyouplantomountit(Besurewireswillfeedthrough
thewireopeninginthebaseofthethermostat).
4. Marktheplacementofthemountingholes.
5. Setthermostatbaseandcoverawayfromworkingarea.
6. Usinga3/16”drillbit,drillholesintheplacesyouhavemarkedformounting.
7. Useahammertotapsuppliedanchorsinmountingholes.
8. Alignthermostatbasewithmountingholesandfeedthecontrolwiresthroughwireopening.
9. Usesuppliedscrewstomountthermostatbasetowall.
10.Insertstripped,labeledwiresinmatchingwireterminals.See“WiringDiagrams”sectionofthis
manual.
CAUTION! : Besureexposedportionofwiresdoesnottouchotherwires.
11.Gentlytugwiretobesureofproperconnection.Doublecheckthateachwireisconnectedtothe
properterminal.
12.Replacecoveronthermostatbysnappingitinplace.
13.Turnonpowertothesystematthemainservicepanel.
14.Testthermostatoperationasdescribedin“TestingtheThermostat”.
To Install Thermostat
Terminal Designator Descriptions
R – 24VAChot
 C – 24VACcommon
W1/O/B – Congurable
 W1 – 1ststageheatfornon-hpsystems
 O –coolactivereversingvalve
 B –heatactivereversingvalve
 Y –1ststagecool,1ststageheatforheatpumps
 W2 – 2ndstageheatforheatpump,non-heatpump,andemergencyheat
 E –1ststageheatforEmergencyHeatoperation
 G –Fan
SC2311L Output Chart
1
ST
Cool 1
ST
Heat 2
ND
Heat
Heat/Cool Y,G W1,G* W1,W2,G*
Heat Pump (One Compressor) Y,G,O Y,G,B Y,W2,G,B
Emergency Heat HP N/A E,G E,W2,G
* G not energized when congured as a gas/oil system
TheSC2311Lthermostatiscongurablefordifferentsystems.Thecongurationdirectlyeffectsthe
outputs.
Usetheoutputcharttocorrectlycongureandwirethethermostattoyoursystem.
Second
HeatingControl
First
HeatingControl
Fan
Control
Electric Heat
Single Transformer
Second
HeatingControl
First
HeatingControl
Gas/Oil Heat
Single Transformer
Wiring Diagrams
CoolingControl
Fan
Control
Second
HeatingControl
First
HeatingControl
Fan
Control
CoolingControl
Single TransformerSingle Transformer
Single Compressor
2
nd
Stage
Heat
Reversing
Valve
Compressor
Emergency
Heat
Fan
Control
1. Temperature Scale (F or C)–ChooseFahrenheitorCelsius.
Presstheupordownbuttontoselect.
 Pressthe RIGHT buttontoadvancetothenextscreen.
2. 1
st
Stage Temperature Differential(1°Fto5°F)(0.5°Cto2.5°C)
Setthenumberofdegreesbetweenyour“setpoint”temperatureandyour“turn
on”temperature.
 Pressthe upordownbuttontosetdifferentialvalue.
 PresstheRIGHTbuttontoadvancetothenextscreen.
Configuration Mode Settings
ThecongurationmodeisusedtosettheSC2311Ltomatchyourheating/coolingsystem.The
SC2311Lfunctionswithheatpump,airconditioning,gas,oilorelectricheatsystems.
ToconguretheSC2311L,performthefollowingsteps:
1. Removethecoverofthethermostatbygentlypullingononeofthetopcorners.
2. SimultaneouslyholdtheLEFTandRIGHTbuttonsinfor5secondswhiletheSC2311LisinOFF
mode.
3. Presstheupordownbuttontochangesettingswithineachscreen.
4. PresstheRIGHTbuttontoadvancetothenextscreen.
Note: The LEFT button will return you to the previous screen.
5. Toexitcongurationmode,slidetheModeswitchtoHeatorCool.
3. 2
nd
Stage Temperature Differential(1°Fto5°F)(0.5°Cto2.5°C)
Setthenumberofdegreesbetweenwhenstage1turnsonandwhenstage2
turnson.
 Presstheupordownbuttontosetdifferentialvalue.
 PresstheRIGHTbuttontoadvancetothenextscreen.
5. Heat Source (o,b,g,E)
Changebetween“o”Heatpumpcoolactive,“b”Heatpumpheatactive,“g”
(Gas)and“E”(Electric).
 Presstheupordownbuttontosetheatsource.
 PresstheRIGHTbuttontoadvancetothenextscreen.
4. Staged Off Outputs
 Selectwhethertheoutputsforheatingandcoolingarestagedoff
independentlyoraresatisedsimultaneously.
 1=outputsstagedoffindependently
 0=outputsoffsimultaneously
 Presstheupordown buttontoset.
Pressthe RIGHT buttontoadvancetothenextscreen.
6. Auxiliary Delay ON–(0-30minutes)–Setthedelaytimeinminutesforauxiliary
heattobelockedoutafteracallforsecondstage.Thisextrasavingsfeatureis
usedtotemporarilylockoutauxiliaryheatdevices,allowingjustheatpumptotry
tosatisfyheatcall.
 Presstheupordownbuttontoselect.
 PresstheRIGHT buttontoadvancetothenextscreen
7. Lockout (0°F-8°F)(0°C-4°C) –Selectthenumberofdegreessettemperature
canbechangedduringkeypadlockout
Pressthe upordownbuttontoselect.
Pressthe RIGHTbuttontoadvancetothenextscreen
.
8. Maximum Heat Setpoint(45°Fto90°F)(7°Cto32°C)
 AdjusttocontrolthemaximumHeatsettemperatureallowed.
 Presstheupordownbuttontoselect.
 Pressthe RIGHTbuttontoadvancetothenextscreen.
9. Minimum Cool Setpoint(45°Fto90°F)(7°Cto32.0°C)
 AdjusttocontroltheminimumCoolsettemperatureallowed.
 Presstheupordownbuttontoselect.
 Pressthe RIGHTbuttontoadvancetothenextscreen.
10.Room temperature offset(+9°Fto-9°F)(+4.5°Cto-4.5°C)
 Adjusttocalibratedisplayedroomtemperaturetomatchactualroom
temperature.
Note: When not set to 0, ROOM will display.
 Presstheupordownbuttontoselect.
 Pressthe RIGHTbuttontoadvancetothenextscreen.
11.Maximum compressor cycles allowed per hour(-,2-6)
 -=asmanyasneeded,and2-6=maximumcycles/hour
 Presstheupordownbuttontoselect.
 PresstheRIGHTbuttontoadvancetothenextscreen.
12.Cooling Fan Delay Off Time(0,30,60,90seconds)
 Selectthefanpurgetimeforcooling.
Presstheupordownbuttontoselect.
 Pressthe RIGHT buttontoadvancetothenextscreen.
13.Status Indicator Light(Lt0,1,2)
 0=Statusindicatorneveron
 1=Statusindicatoronwithrststage
 2=Statusindicatoronwithsecondstage
 Presstheupordownbuttontoselect.
Note: Red light indicates heating cycle and green light indicates cooling cycle.
 SlidetheModeswitchtoHeatorCooltoexitconguration.

ICM Controls SC2311L Specifications

General

Voltage	24V AC
Stages	2 Heat / 1 Cool
Mounting	Wall Mount
Color	White
Warranty	3 Years
Temperature Range	45°F to 90°F (7°C to 32°C)
Features	Keypad Lock
Voltage Rating	24V AC
Temperature Control	Digital
Dimensions	4.7 x 4.2 x 1.1 inches

Summary

System Wiring Diagrams

Cooling Only Wiring

Wiring for single-stage cooling systems.

Heating;Cooling Wiring

Wiring for 2-stage heat/1-stage cool systems.

Electric Heat Wiring

Wiring for electric heating systems.

Gas;Oil Heat Wiring

Wiring for gas or oil heating systems.

Heat Pump Wiring

Wiring diagrams for various heat pump configurations.

Thermostat Configuration Settings

Temperature Scale Selection

Choose between Fahrenheit (F) or Celsius (C) display.

1 st Stage Temp Differential

Set the temperature difference for 1st stage heating/cooling.

2 nd Stage Temp Differential

Set the temperature difference for 2nd stage heating.

Staged Off Outputs Control

Define if outputs stage off independently or simultaneously.

Heat Source Type

Configure the system's heat source (e.g., heat pump, gas, electric).

Auxiliary Heat Delay

Set lockout delay for auxiliary heat after 1st stage call.

Keypad Lockout Setting

Limit temperature adjustment range when lockout is active.

Max Heat Setpoint Limit

Control the highest allowed temperature for heating.

Min Cool Setpoint Limit

Control the lowest allowed temperature for cooling.

Room Temp Calibration

Adjust displayed room temperature to match actual temperature.

Max Compressor Cycles

Set the maximum number of compressor cycles per hour.

Cooling Fan Delay

Select the fan purge time after cooling operation.

Status Indicator Light Config

Configure the behavior of the status indicator light.