Instruction/ maintenance manual of the product RTH7400D Honeywell
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OWNE R’S GUIDE Patents Pending ® U.S. Regi stered Trademark © 2004 Hone ywell Internati onal Inc. All Right s Reserved 69-1726-1 RTH 7400D Programmable T hermostat The R TH7 40 0D T her mos tat p rov id es elec tro ni c c on tro l of 24 V ac hea ting an d cool ing sy stem s or 75 0 mV he ating sy stem s.
69-1726 —1 2 Contents Prepare fo r Ins tallat ion ....... .... .... .... ... ........ .... .... .... ... ........ .... ... 3 Follo w I mp ortant In struc tio ns ..... .... ... .... .... .... ........ ... .... .... .... ... 5 Remo ve O ld T he rmos tat .
3 69-1726—1 Step 1. Prep are for Inst allation 1. Check that th e follo wing it ems are incl uded: If any o f the items s hown ab ove are mi ssing , call Honeywel l Customer Care at 1- 800-468-150 2 befor e retur ning the t hermost at to the stor e.
69-1726 —1 4 Step 1 . Prepare for I nstallation (Cont) 2. Check tha t you have ever yt h ing requir ed f or the ins talla tion : • Two AA alk a li ne ba t te ri es • N o. 2 Phill ips scr ewdriv er and st andard pocket s cre wdri ver •D r i l l • D rill bit—use 3/16 in.
5 69-1726—1 Step 2. F ollow Import ant I nstructions 1. Do not connec t the wires to t he new thermost a t based on wir e color because da mage can occur to the heat ing and/ or cooli ng system.
69-1726 —1 6 Step 3. Re move Old Therm ostat 1. T urn off power a t the heati ng and/or cooling sys tem or fus e/cir cuit break er pa nel. 2. Remov e the cov er from the old thermos tat. 3. Remov e the ol d thermost at from the wal l or wall- plat e.
7 69-1726—1 St ep 4 . Foll ow Sp ecia l Inst ructio ns 1. If you have two C and/or C1 wires conne cted t o your ol d thermost at, do not con nect them to you r new t hermostat . 2. Disco nnect the C and/or C1 wires. Ma ke sure they do not tou ch each other or any other wires .
69-1726 —1 8 Step 4. F ollow Sp ecial I nstruction s (Cont) 4. If y ou have onl y one C and/or C1 wire co nnected to your ol d thermost at, connec t t his wire to C on the new t hermostat .
9 69-1726—1 Step 4. F ollow Sp ecial I nstruction s (Cont) 5. If you fi nd any wi res not connec ted to your old ther most at, do not conne ct them to your new ther most at. 6. W rap the end of the wir es that ar e not con nected with elec trical tape.
69-1726 —1 10 Step 5. Label Old Thermo stat Wires 1. As you disc onnec t each wire, use t he enclose d wire label s to wrap a wire lab el around eac h wir e that matches the l etter desi gnation. Do not all ow the wire s to f all into the wa ll o pening after the wi res are disc onnected.
1 1 69-1726—1 Step 6 . Mount New Wallplate to Wall 1. Separ ate the wal lplat e from the ther m ost at as shown. THERMOSTAT WIRE HOLE M22267 WALLPLATE.
69-1726 —1 12 S te p 6. M ou nt Ne w W al l plat e to W all (C o nt ) 2. Pass the l abeled wires t hrough the wire hole on the wa llpla te. M22279 WIRE HOLE W ALL OPENING WA L L PLA TE LABELED WIRES.
13 69-1726—1 S te p 6. M ou nt Ne w W al l plat e to W all (C o nt ) 3. Posit ion the wall plate on the wall wit h the arrow point ing up. Level the wallp l ate (f or appear ance only ) and mark the two mount ing hol es with a penci l .
69-1726 —1 14 S te p 6. M ou nt Ne w W al l plat e to W all (C o nt ) 4. Mov e the wal lplat e aside and dr ill hole s at the loca t ions m arked on t he wall. Drill 3 /16 in. ho les for dr y wa ll or 7/ 32 in . ho l es fo r pl a st e r . 5. T ap the wal l anch or s i nt o the dr il led hol es unt il ev en with the wal l surfa ce.
15 69-1726—1 Step 7. Co nnect Wires to New Wallplate 1. Match the labe l ed wi r es t o the l ette r desi gnations on t he wallplat e. 2. Selec t th e correct let ter designa t ions to f oll ow for your s ystem. If y ou have a st andard heat ing and/ or cool i ng syst em, use the CONVENTIONAL le tter desi gnations.
69-1726 —1 16 Step 7. Connect Wires to New W allplate (Cont) 3. If wires are to be connect ed to both Rc and R, loos en t he Rc and R screw ter minals and remove the metal j umper wi re. 4. If onl y one of the termi nals, Rc or R, is t o be connec t ed, lea ve the meta l jumper wire i n place.
17 69-1726—1 Step 7. Connect Wires to New Wal l plate (Cont) 5. Loosen t he screw ter m inals. Insert the labeled wire s int o the holes on t he side o f the t erminal bloc k that match the lett er design at ions . T ight en the s cre w termi nal s.
69-1726 —1 18 S tep 7. Connect Wires t o New W allplate ( Cont) 7. Comp are lette r designa t ions on you r old and new ther most ats . Use the infor m ation bel ow if you are wiring a CONVENTIONAL System . Use the inf ormati on on page 2 0 if you a re wiri ng a He at Pump sy stem.
19 69-1726—1 Step 7. Connect Wires to New W allplate (Cont) 1 M22246 If wires will be connected to both R C and R on the new thermostat, remove metal jumper wire between R C and R. Leave metal jumper wire in place if only one of the terminals, R C or R, will be connected on the new thermostat.
69-1726 —1 20 Step 7. Connect Wires to New W allplate (Cont) 8. Comp are lette r designa t ions on you r old and new ther most ats . Use the infor m ation bel ow if you are wiring a HEA T PUMP system. Be sure to read the note refe r enced in t he numb ered t riang les ab ove.
21 69-1726—1 Step 7. Connect Wires to New W allplate (Cont) 1 M22245 Leave metal jumper wire between RC and R in place. If the old thermostat had separate wires on both the V and VR, some system modification is required. Call your local heating and cooling contractor for assistance.
69-1726 —1 22 S tep 7. Connect Wires t o New W allplate ( Cont) 9. Push exce ss wire back into t he wal l open i ng. Keep wire s in the shaded area. WA LL P L ATE M22297 W ALL OPENING WIRE SHADED AR.
23 69-1726—1 Step 8. Install Batteries 1. Inst a ll two f r esh AA alkalin e batt eries on the bac k of the th ermos tat as mar ked on the therm ostat . 2. Remov e t ab lab el e d “Remove during i nst allation” in t he l ower ri ght co r ner of the t herm ostat back .
69-1726 —1 24 Step 9. Attach New Ther mostat to Wa llplate 1. Ali gn the screw block s with the pi ns on the back of the th ermost at . 2. Push the thermost at straight onto the wal lpla te unti l it sn aps i nto pl a ce. 3. T urn on the power at the he at ing and/or c ooling syst em or fuse/c ircuit breaker panel.
25 69-1726—1 Step 10. Se t the Calendar This thermost at i s desi gned to aut omatical ly ke ep curr ent ti me and day in memor y for up t o ten years , under nor mal use, on ce t he cal endar is set . When the the rmosta t is fir st powered , the disp l ay is re ady to set the cal endar .
69-1726 —1 26 Step 10. Set the Calendar (Cont) 6. Press the Done button to advance to t he T ime. 7. Use the Up or Down arrow but ton to set the T ime.
27 69-1726—1 Step 1 1. Con figure Installer Setup 1. Use the In stal ler Set up Menu to match your new ther most at to your heatin g and/o r cooling sys tem. Foll ow the step s i n thi s secti on to set up your ther most at. 2. Press and rel ease the System butt on.
69-1726 —1 28 St e p 1 1. Configure Inst aller Setup (Cont) 3. Press and ho ld t he cent er butt on for appr oximately fi ve secon ds, until the screen cha nges. 4. Releas e the center button when t he display on your t hermost at mat ches the displ ay below .
29 69-1726—1 1 1. Conf igure Ins t a l ler Set up (Cont) 5. Press the Up or Down ar rows to select your set ting for Inst all er Set up Number 01 20 bel ow . 6. Aft er yo u select your set t ing, p ress t he Next button to go to th e next Insta l ler Setup Number .
69-1726 —1 30 St e p 1 1. Configure Inst aller Setup (Cont) 8. Press the Up or Down ar rows to select your set ting for Inst all er Set up Number 01 70. 9. Aft er y ou select y our set tin g, pr ess the Ne xt but ton to go to th e next Insta l ler Setup Number .
31 69-1726—1 St e p 1 1. Configure Inst aller Setup (Cont) 10. If yo u do not have a num ber 0180 on the lef t si de of your display , g o to t he next p age. 11 . If you have a number 018 0 on the lef t side of your disp l ay , pre ss the Up or Down ar row to s elect yo ur sett ing f or I nst al ler Setup Number 0180.
69-1726 —1 32 St e p 1 1. Configure Inst aller Setup (Cont) 13. If yo u do not have a num ber 0190 on the lef t si de of your display , g o to t he next p age. 14. If you have a number 019 0 o n the l eft si de of your disp l ay , pre ss the Up or Down ar row to s elect yo ur sett ing f or I nst al ler Setup Number 0190.
33 69-1726—1 St e p 1 1. Configure Inst aller Setup (Cont) 16. If yo u do not have a num ber 0240 on the lef t si de of your display , g o to t he next p age. 17. If you have a number 024 0 o n the l eft si de of your disp l ay , pre ss the Up or Down ar row to s elect yo ur sett ing f or I nst al ler Setup Number 0240.
69-1726 —1 34 St e p 1 1. Configure Inst aller Setup (Cont) 19. Press the Up o r Down arrow to select your setti ng for Inst all er Set up Number 03 20. 20. Aft er y ou select y our set tin g, pr ess the Ne xt but ton to go to th e next Insta l ler Setup Number .
35 69-1726—1 St e p 1 1. Configure Inst aller Setup (Cont) 21. Press the Up o r Down arrow to select your setti ng for Inst all er Set up Number 03 30. 22. Aft er y ou select y our set tin g, pr ess the Ne xt but ton to go to th e next Insta l ler Setup Number .
69-1726 —1 36 St e p 1 1. Configure Inst aller Setup (Cont) 23. Press the Up o r Down arrow to select your setti ng for Inst all er Set up Number 05 00. 24. Aft er y ou select y our set tin g, pr ess the Ne xt but ton to go to th e next Insta l ler Setup Number .
37 69-1726—1 St e p 1 1. Configure Inst aller Setup (Cont) 25. Press the Up o r Down arrow to select your setti ng for Inst all er Set up Number 05 30. 26. Aft er y ou select y our set tin g, pr ess the Ne xt but ton to go to th e next Insta l ler Setup Number .
69-1726 —1 38 St e p 1 1. Configure Inst aller Setup (Cont) 27. Press the Up o r Down arrow to select your setti ng for Inst all er Set up Number 06 40. 28. Aft er you select y our setti ng, p r ess t he Done ke y to exit the Instal ler Setup and sav e your se ttings.
39 69-1726—1 Get to Know Y our Thermost at Buttons Thermostat M22316 UP ARROW BUTTON RAISES TEMPERATURE SETTING OR MAKES SELECTIONS IN OTHER SCREENS DOWN BUTTON LOWERS TEMPERATURE SETTING OR MAKES S.
69-1726 —1 40 Get to Know Y our Thermostat Display Dis p lay M22317 SHOWS CURRENT DAY OF WEEK TEMPERATURE SETTING CURRENT TIME CURRENT SYSTEM SETTING CURRENT FAN SETTING INDICATES THERMOSTAT IS &quo.
41 69-1726—1 Set System Setti ng Set System S etting Press the System butt on to sele ct Heat, Of f or Cool: Heat —T hermost at c ontrols the h eating sy stem. Off —Heat ing an d coolin g s ystems ar e both off. Cool — Thermost at cont rols the c ooling s ystem.
69-1726 —1 42 Set Sys t e m Setting (Cont) Set Fan Sett ing 1. Press System & F an button. 2. Press the Fan button to select Auto or On: Auto — N o rmal setti ng for most homes . Th e fan runs onl y when the heat ing or cool ing syst em is on.
43 69-1726—1 Progr am Y our Heati ng and Cooli ng Schedule Y our ther mostat can contro l up t o f our dif fer ent sc hedule peri ods Monda y through Fr iday and Satu rday and/ or Sunday : Wa ke — Pe riod when you awaken a nd want your hom e at a comfor table temper ature .
69-1726 —1 44 Program Y our He ating and Cooling Schedu le (Cont) 2. Press the Edit button . Go B ack Ed i t Vi ew M22331 Mon T ue W ed Th u Fri Sat S u n.
45 69-1726—1 Program Y our He ating and Cooling Schedu le (Cont) 3. Mond ay thr ough Fri day fl ashes. Press the Sel ect Day butt on to selec t Monday thr ough Frida y . The days sel ected are schedu led with the sam e times and t emperatures . Chec kmarks a ppear n ext to the days sel ected.
69-1726 —1 46 Program Y our He ating and Cooling Schedu le (Cont) 4. Press the Next S tep button. Once pressed , W ake fl ashes to show it is selecte d. 5. Press t he Next S tep butt on to s elect the W ake time . 6. Use the Up and Down ar row butt ons to chang e the tim e.
47 69-1726—1 Program Y our He ating and Cooling Schedu le (Cont) 12. When compl ete, press the Done but ton. “Saved” appear s on the displ ay to indi cate cha nges are being saved to t he day( s) sele cted. 13. T o set a program sch edule for Satur day and Sunday , repeat steps 1 through 12.
69-1726 —1 48 Set T ime Set Tim e 1. Press Clock & More butt on. 2. Use the Up and Down arr ow butt ons to set the curr ent t ime . 3. Press the Done button . The curr ent day of t he we ek should al ready be set correctly . I f not , s ee S tep 1 1, Confi gure Ins talle r S etu p.
49 69-1726—1 Se t T emp era tu re Ov er r id es Hold Temperature Until (Temporary Hold) Hold te mperatur e t emporar i ly unt il th e next scheduled peri od time. 1. Press the Up o r Down arrow buttons ne xt to the temper at u re you want to adjus t.
69-1726 —1 50 Set T em perature Ov errides (Cont) Permanent Hold Permanent Hol d changes the temp erature set t ing unt il Permanent Hol d is canc elled . 1. Use the Up or Down arrow but tons to set the temper at ure you want during the hold. 2. Press t he Hol d button.
51 69-1726—1 Use Y our Filter Timer The Fi l ter T imer noti fies y ou whe n to ch ange y our fu rnace filte r . Reset Filt er Ti mer 1. “Change Filter ” app ears on t he displ ay when the fil ter ti me r exp ir es. 2. Press the Reset b utton to r esta r t t he filte r timer .
69-1726 —1 52 Use Y our Filter T imer (Cont) View or Reset The Remain ing Change Filt er Time 1. Press the Clock & More button. 2. Press the Next bu tton. 3. Press the Reset button to Restart the filt er timer , if desi r ed. 4. Press the Done button .
53 69-1726—1 Understand T emp erature Re covery F eature Y o ur therm ostat co mes with a featur e calle d Ada ptive Intellig ent Reco ver y™, whi c h eli min ates al l gu esswor k when s ett ing yo ur sch edule.
69-1726 —1 54 Replace Ba tteries 1. When t he LO Batt er y indi cator is flashin g, repla ce the bat teri es promptly wit h two fresh AA alkal ine batt eries .
55 69-1726—1 Replace Batter ies (Con t) 3. Remov e the ol d batter ies and inser t two fres h AA alka l ine batteries, as marked on t he ther most at.
69-1726 —1 56 Replace Batt eries ( Cont) 4. Ali gn the screw block s with the pi ns on the back of the th ermost at . 5. Push the thermost at straight onto the wal lpla te unti l it sn aps i nto pl a ce.
57 69-1726—1 Review Battery Tips 1. Replac e the b at ter ies a s soon as LO Batt f lashe s in the di splay . The LO Battery i ndicat or flas hes in the disp l ay on e month befor e the batteries run d own com p l et el y . 2. Always use fr esh AA a lkaline batt eries.
69-1726 —1 58 Buil t-in C omp ress or P rotec tion The R TH7400D Th er mos tat has bu i lt -in compr essor prot ectio n (m inimum- off timer ) that preve nts th e com pressor fro m restar t ing t oo early af ter a shutdown. The mini m um-of f tim er is activ at ed af t er the compr essor turn s o ff.
59 69-1726—1 T rou bl esh oot ing Ti p s If . . . T hen . . . Display is bla nk. Chec k that fr esh AA alka line bat ter ies are in st alle d as marked on the ther m ost at . T em p er a tur e set ting s do not change . Chec k that th e tempe ratu re s ettin gs are: • Heat i ng 40° F t o 90°F (4.
69-1726 —1 60 Canno t set Sy stem se tting to Cool. Chec k Insta ller Set up Num ber 0170, Heat i ng an d/or C ooli ng Sy stem T ype; mak e sur e the setti ng matc hes the instal l ed heat i ng and/ or co oling sy stem. “Heat On” is not shown in the display .
61 69-1726—1 Both the heat ing and cooling syst ems a re run ning at the sa me ti me. Chec k Insta ller Set up Num ber 0170, Heat i ng and/o r Coolin g Syste m T ype, and make sure th e setting matche s the insta lled heat i ng and/ or co oling sy stem.
69-1726 —1 62 C ustomer As sist ance For assi sta nce with your Honeywe ll prod uct, please vi sit www .honey well.com/ yourhome or call Honeywel l Customer C are toll fr ee at 1-800- 468-1502 .
63 69-1726—1 Limited On e-Y ea r Warranty Honeywel l warr ants this pr oduct, ex cluding bat tery , to b e free from de fec ts in the wor kmans hip or materi als, und er normal use and servi ce, for a period of one ( 1) year from the date of pur chase by the c onsumer.
69-1726 —1 G .H. 0 8-04 www .h oneywell.com/your home Auto mat ion a nd Contr ol S olut ion s Hone ywell International Inc . Honeywell Limited-Honey well Limitée 1985 D ouglas Drive Nor th 35 Dynam.
An important point after buying a device Honeywell RTH7400D (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Honeywell RTH7400D yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Honeywell RTH7400D - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell RTH7400D you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell RTH7400D will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell RTH7400D, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Honeywell RTH7400D.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell RTH7400D. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell RTH7400D along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
