Daikin 910121746 User Manual

Specifications
Electrical rating: • 24VAC(18-30VAC)
 • 1ampmaximumperterminal
 • 3ampmaximumtotalload
Temperature control range: 55°Fto90°F(13°Cto32°C)Accuracy:±1°F(±0.5°C)
System congurations:2-stageheat,2-stagecool
Timing:Anti-shortCycle:4minutes(bypassanti-shortcycledelaybyreturningtoOFFmodefor5seconds)
 BacklightOperation:10seconds
Terminations:A,L,S1,S2,R,C,W1,Y1,W2,Y2,G,O
Package Contents/Tools Required
Package includes:910121746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
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
• 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
Icon Descriptions
Coolingoperationicon
Fanoperationicon
Heatingoperationicon
Roomtemperature
offsetactivated
Parts Diagram
Conguration
switch
Resetswitch
Right(fan)button
Downbutton
Upbutton
S1 S2 R C GY1 W2 Y2
RESET CONFIG
To Remove Existing Thermostat
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 Install Thermostat
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 ve 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,pullgentlyattheseamatthetop.
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.
TerminalsS1andS2canbeusedforanindoorremotesensor.
Theindoorremotesensorisusedtoreadtheindoortemperature
inadifferentlocation.Thisisbenecialwhenthethermostatisnot
mountedintheideallocation.TheremotesensorP/Nis910116773.
1. Removecoverfromremotesensorhousing.
2. Selectanappropriatelocationformountingtheremotesensor.
3. Mountremotesensorunitusinghardwareprovided.
4. Installtwostrandshieldedwirebetweenremotesensorand
thermostat.Shieldedwireisrecommended.
Do notrunremotesensorwireinconduitwithotherwires.
 • Wire 1shouldrunbetweentheS1terminalonthethermostat
andtheS1terminalontheremotesensor
 • Wire 2shouldrunbetweentheS2terminalonthethermostat
andtheS2terminalontheremotesensor
 • ConnecttheshieldingofthewiretotheS2terminalonthethermostat
5. Congurethethermostattooperatewiththeremoteindoorsensor(seeCongurationModesetting9).
Remote Sensor Installation (Optional)
Note: Remote or outdoor sensor reading can be
displayed by simultaneously pressing the
Down and SYS buttons.
Remote Sensor:
(Contact Daikin for optional remote sensor.)
8.Alignthermostatbasewithmountingholesandfeedthecontrolwiresthroughslitinthermalintrusionbarrierand
intowireopening.
9.Usesuppliedscrewstomountthermostatbasetowall.
10.Insertstripped,labeledwiresinmatchingwireterminals.

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.Turnonpowertothesystematthemainservicepanel.
13.Congurethermostattomatchthetypeofsystemyouhave.
14.Replacecoveronthermostatbysnappingitinplace.
15.Testthermostatoperationasdescribedin“TestingtheThermostat”.
1
ST
Cool 2
ND
Cool 1
ST
Heat 2
ND
Heat
Heat/Cool Y1 YI,Y2 W1 W1,W2
The910121746thermostatiscongurableforallsystems.Thecongurationdirectlyaffectstheoutputs.
Usetheoutputcharttocorrectlycongureandwirethethermostattoyoursystem.
910121746 Output Chart
Configuration Mode
OFF
1. Verifythe910121746isintheOFFmode.
 PresstheSYS(left)buttonuntiloffmodedisplays.
2. Removethecoverofthethermostatbygentlypullingnearoneofthecornersat
thetopofthethermostat.
Toexitcongurationmode,presstheCONFIGswitchfor1second.
Presstheupordownbuttontochangesettingswithineachscreen.
Downbutton
Upbutton
Presstherightbuttontoadvancetothenextscreen.
Note:Pressing the left button will return you to the previous screen.
Left
button
Right
button
Thecongurationmodeisusedtosetthe910121746tomatchyourheating/coolingsystem.Tocongurethe
910121746,performthefollowingsteps:
3. PresstheCONFIGbuttonfor1secondwhilethe910121746isinOFF mode.
CONFIG
S1 S2 R C W
O/B
GY1 W2 W3Y2
RESET CONFIG
FP
Wiring Diagrams
L
S1
S2
R
C
W1
Y1
W2
Y2
G
A
O
O
G
Y1
Y2
W1
W2
A
R
C
4
3
2
1
5
O
G
Y1
Y2
W1
W2
A
R
C
ICM
Thermostat
Terminal
TB2
TB1
ICM
Thermostat
Terminal
WSHP Main Control Board
Terminals TB1 and TB2
Terminal Designator Descriptions
R–24VAChot
C–24VACcommon
W1–1ststageheat
Y1–1ststagecool
W2–2ndstageheat
Y2–2ndstagecool
 G – Fan
 A – Alarminput
 L – Statusinput
 O – Override/reset
Daikin P/N (910121746)
• Configurable
• 2-Stage Heat/2-Stage Cool Systems
• Large Display With Backlight
• Selectable Fahrenheit or Celsius
• Status Indicator Light
• Relay Outputs
(minimum voltage drop in thermostat)
• Remote Sensor Compatible
Installation, Operation & Application Guide
Version B: 10-15-13
2 Heat/2 Cool, Auto Changeover, Hardwired
Non-Programmable Electronic Thermostat

Daikin 910121746 Specifications

General

Brand	Daikin
Model	910121746
Category	Thermostat
Language	English

Summary

Important Safety Information

Package Contents and Tools Required

Thermostat Installation Procedures

To Remove Existing Thermostat

Steps to safely remove the old thermostat from the wall, including turning off power and labeling wires.

To Install Thermostat

Steps for mounting the new thermostat base, marking holes, drilling, and feeding wires.

Wiring Diagrams and Remote Sensor

Wiring Diagrams

Schematics for connecting the WSHP Main Control Board terminals to the thermostat.

Remote Sensor Installation

Instructions for connecting an optional indoor remote sensor to the thermostat for accurate room readings.

Configuration Mode Setup

Configuration Mode

Overview of entering and navigating the thermostat's configuration mode for system matching.

Configuration Mode Settings

Detailed settings for temperature scale, differentials, deadband, setpoints, and sensor selection.

Thermostat Operation and Testing

Operating Modes

Description of available modes: OFF, Heat, Cool, and Cool & Heat (Auto Changeover).

Testing the Thermostat

Procedures for testing Heat, Cool, and Fan functions to ensure proper operation.

Mode of Operation

Explanation of how the thermostat controls heating and cooling based on setpoints and differentials.

Button Functions

Explanation of the UP, DOWN, SYS, and FAN buttons and their functions.

Troubleshooting