Lux Products P521Uc User Manual

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Page 1

P 5 2 1 U c

SM ART TEM P®UN IV ERSAL 5/2-D AY

PR OG RAMMABLE OR N ON -P RO GRAMMABLE T HE RM OS TAT

(F OR BOTH CON VE NTI ON AL AND H EAT PUM P SYSTE MS )

I N S T A L L AT I O N A N D O P E RAT IN G I N S T R U C T I O N S

52175

IMPORTANT!

• Ple ase read all of these in struc tions ca refully before b eginning insta llati on.

• Lab el every wire termina l des ignation on y our exis ting the rmostat wirin g befor e removi ng your old ther mosta t.

• Ign ore the color of the wir es si nce they may not comply with any stand ard. Please c onnect w ires usi ng th e t ermin al lette r design ation s.

Th ank you f or your con fi dence in ou r product . To o bt ai n the b es t results f ro m yo ur invest me nt, p lease r ea d and fol lo w th e insta ll at io n proce du re s caref ul ly, an d on e step at a t ime. Th is will s av e yo u time an d minimiz e th e chanc e of damaging ei ther the th ermostat or p ossibly y ou r heating a nd coolin g sy stem. T he se in struction s may conta in informat io n beyond th at w hich ma y be requir ed f or your pa rticular in stallatio n.

CAU TIONS AND WARNIN GS . . . . . . . . . . 2

SYS TEM C OMPATIBILITY . . . . . . . . . . . . 3

FEATURES . . . . . . . . . . . . . . . . . . . . . . . 4

TOOLS YO U MAY NEE D . . . . . . . . . . . . . . 4

MOUNT ING LOCATION . . . . . . . . . . . . . . 5

REMOV E OLD TH ERMOSTAT . . . . . . . . . . 5

INSTALL T HERMO STAT BASE . . . . . . . . . 6

WIRIN G INFORM ATION . . . . . . . . . . . . . . 7

WIRIN G DIAGRA MS . . . . . . . . . . . . . . . . 9

COMPL ETE THE INSTALL . . . . . . . . . . . 18

FRONT PAN EL IT EMS . . . . . . . . . . . . . . 18

SYS TEM C ONFIGURAT ION AND SETUP

OPTIO NS . . . . . . . . . . . . . . . . . . . . . . . 20

OPERATING INST RUCTIONS . . . . . . . . . 23

TEMPE RATU RE PR OGRAMS . . . . . . . . . 25

ADVANC ED FE ATUR ES . . . . . . . . . . . . . 26

BATTERY REPL ACEME NT . . . . . . . . . . . 30

TECHN ICA L ASSISTA NCE . . . . . . . . . . . 31

LIMIT ED WARRANTY . . . . . . . . . . . . . . 3 1

MERCU RY NOTICE . . . . . . . . . . . . . . . . 32

WARN ING: Use E nerg izer®or DURAC ELL® Alkaline Bat teries Only.

Ener gizer®is a regist ered t radem ark of Eveready Batt ery Co mpany, I nc.

DURA CELL

is a regist ered t radem ark of The P rocter & Ga mble Company

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CAU TIONS AND WARNIN GS:

• This th er mostat re qu ires batter ie s to oper at e and failu re or sub-s ta ndard pe rformance o f the bat te ri es may im pa ir or p re ve nt the co rr ect ope ra ti on of th e thermos ta t. Us e Duracel l®or Energize r®al kaline ba tt er ies ONLY for al l LU XPRO ther mo stats req ui ri ng batter ie s. BE S URE T O CHANG E THE B ATT ERIES AT LEAST ONC E A YEAR, or wh en ever you se e the LO BAT T indicatio n on the sc reen. Fail ur e to foll ow t hese batt er y in struction s could res ul t in prop er ty da ma ge and/ or p ersonal i nj ur y.

• The e le ct rical r at in g for thi s thermosta t is 1.5 Amps per te rminal, with a ma ximum tot al load of 3. 0A for al l terminals c ombined.

• The t he rm ostat con ta ins parts t ha t may wea r out throu gh use and ar e su sceptible t o failure i f over-loade d or used i n a manner ot he r than as in dicated i n th e docum en ta ti on.

• Ch ec k unocc up ie d resid en ce s regul ar ly to ens ur e that all sy st ems are op erating p ro pe rly.

• Ch ec k any hea ti ng /air- condition in g system in cludi ng t his pro du ct before op eration a nd a t regular i nt er vals.

• El ec trical in te rferenc e, st at ic electric it y, f ai lu re or s ub st andard pe rf ormance o f ba tt eries, wirin g de fects i n th e insta ll at io n and/o r ch aracter is ti cs of t he co nnected H VAC d ev ices ma y pr event t he s ystem f ro m regulatin g he at ing and co oling as an ticipated .

• The t he rm ostat is a sensitive d evice and d ropping t he product ca n cause da ma ge to c ri ti cal com po ne nts. If the pr od uct is dr op ped or sh ak en viol en tl y du ring tran sp ort or in st allation th en it sho ul d be repl ac ed immedi at el y.

• Persons w it h physica l or mental l imitations ma y not be ab le to pro mp tly re spond to a malfuncti on of the h ea ti ng/air-condi ti on ing sys te m.

• All r es id ents sh ou ld be mad e aw are of th e potential i n any syste m for ma lfunction s that coul d ca use con ti nu ous hea ti ng o r cooli ng a nd shou ld b e fa miliar wi th the oper at io n and l oc at io n of th e he at ing/coo li ng applianc e on/off sw it ch.

• Re ad the in st ru ction m an ua l compl et el y befor e in stallin g th e therm os ta t. You sh ould cons ul t a quali fi ed HVAC tech ni ci an or a n el ectrici an i f you d o no t fully un derstand th e install at io n instr uc ti ons.

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HOLD

RUN

AY/T IME

TEM P P ROG

AIR FI LTER

EMP ERAT URE

EAT

OFF

COO L

UTO

EME R

NEX T

P 5 21 U c

LCD Display Screen

Fan Mode Switch

Set Slide

Switch

System Mode Switch

UP, DOWN and HOLD Buttons

SYS TEM C OMPATIBILITY:

Th e electri ca l rating fo r this th er mo stat is 1 .5 Am ps p er term in al , w it h a ma ximum tot al combined l oad of 3. 0A for all te rminals c om bined.

CO MPAT IBLE WI TH :

• Mo st 24-vol t he at ing and c oo ling sy st em s

• 1 or 2 stage He at / 1 stage Co ol: G as, O il or Ele ct ric syste ms

• 1 or 2 stage He at / 1 stage Co ol: H ea t Pump sy st ems

• 3- wi re hydr on ic (hot w at er ) zone va lv es

• Ga s Millivo lt h ea ters

NOT COM PATI BL E WITH:

• 12 0/ 240 VA C li ne-volt ag e systems ( wi thout a t ra nsformer) , ask y our LUXPR O de aler for th ermostats t o control t he se syst em s.

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FEATURES:

• 1 or 2-Heat / 1 -C ool, 5/2-day p rogrammin g

• Un iv ersal C om pa ti bility fo r all sys te m types

• Weekdays an d W eekends c an be pro gr am med sep ar at ely

• Ex clusive L UX®Sp eed SlideTMfo r easy pr og ramming

• Us er- se le ctable pe ri ods per d ay (2 or 4)

• Us er- se le ctable pr og rammabl e or non-pr og ra mmable op er ation

• Lu xL ight®EL (Electro -L uminescen t) lighted di splay

• Pr og rammabl e ai r filte r li fe time r

• Ke yp ad lock ou t for una ut ho rized u se rs

• Ma nu al temp er at ur e hold

• Tem porary temp er at ure ove rr id e

• Ad ju stable te mp erature d if fe rential / cycl e-rate

• Ad ju stable 2n d heat stage Of fset sett in g

• Us er temper at ur e calibra ti on

• Ad ju stable he at /c ool set t em perature li mit stops

• Sm ar t recov er y

• Du al -powered (b at tery and/or 2 4- volt sy st em powered)

• Ba tt er y- free memo ry s to rage

• F/ C tempera tu re d isplay

• 12 /2 4-hour clock dis pl ay

• 5/ 2- minute se le ctable ti me delay fo r equipme nt p rotecti on

TOOLS YO U MAY NEE D:

• Sc re wdriver s

• Wi re Stripp er

• Wi re Cutter

• Dr il l with as so rted dr il l bits (n ew i nstalla ti on s only)

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MOUNT ING LOCATION :

On replacem en t install at io ns, m ount th e ne w therm os ta t in plac e of the ol d on e un less the co nditions li sted belo w su ggest o th er wise. On ne w in stallatio ns , pl ease foll ow t hese ge ne ra l guide li ne s:

1. Mount th e thermos ta t on an ins id e wall, about 5 ft. ( 1.5m) abo ve the floo r.

2. Do not l oc ate the t he rmostat whe re air circ ul at ion is po or such as in a corner, al cove, or beh in d a door th at i s norma ll y left op en .

3. Do not l oc ate the t he rmostat whe re unusual he at ing or co ol ing condi ti ons may be present, su ch a s: di rect su nl ig ht, a bove a la mp , t el evision , or ra di ator, or on a wall next t o an exte ri or door o r window.

4. Do not l oc ate in a da mp enviro nm ent, as this c an lead to co rrosion t ha t may sh orten the rm ostat lif e.

5. If pai nt in g or co ns tr uction wo rk is sti ll o ngoing, cove r th e therm os ta t co mpletely or wait unt il this wor k is comple te before i ns tallation .

WARNING :

Al l wiring mu st confor m to the lo ca l codes a nd ordinanc es that are i n your pa rticular lo ca tion.

REMOV E OLD TH ERMOSTAT:

1. Turn OFF t he electric it y to all he at ing and c oo ling co mponents. Do n ot turn t he e lectric it y back on u nt il al l work is c ompleted.

2. Remove t he front po rt ion of yo ur old th er mo stat to ex pose the wi ring conn ec tions.

3. Wr it e down th e letters p ri nted near e ach wire te rminal th at is use d, an d al so the co lo r of ea ch w ire tha t is co nnected t o it. Self-ad he si ve wire l ab els are a ls o en close d.

4. Carefu ll y remove th e wires o ne a t a time, and be nd them i n a manner so that th ey do not f all back in side the wa ll. D o not a ll ow b are wir e en ds to t ou ch ea ch other.

5. Loosen t he mounti ng s crews f or t he old th er mostat an d carefully r emove it fr om the wa ll .

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INSTALL T HERMO STAT BASE:

THERM OSTAT TOP VIE W

1. Strip wi re insula ti on leaving on ly 3/8 in. (9.5m m) bare wir e ends, and cl ean off an y corrosi on p resent.

2. Fill t he wall o pe ning with n on-combus ti ble insul at io n to prev en t drafts fr om af fecting t he thermost at ’s normal op er at ion.

3. Separa te n ew thermo st at housing us ing your th umb and i nd ex finger. P ro vide pr essure in o pposite d ir ections t o the relea se tabs on th e top of th e housing , in the dire ct ions show n in the di ag ra m shown abo ve .

4. Route th e wires t hr ou gh the op en ing in th e new the rm os tat base pl at e, an d ho ld the ba se a gainst th e wall. Tr y to line u p the screw h oles from t he prior th ermostat, and in st all the m ou nting s cr ew s.

5. If the p re vious h ol es cannot b e used, hold t he t hermost at b ase against t he wa ll so tha t it a ppears st ra ight an d le vel (po si ti on the ba se for be st ap pe arance) a nd mark f or t he new sc re w holes . Attach th e base to t he wall us ing the s cr ews provi de d (use th e supplied pl astic anc ho rs if nee de d when mo unting to a soft mat er ia l such as d ry wall).

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WIRIN G INFORM ATION:

CO NNECTING TH E WIRES:

Wh en attach in g the wir es t o the t he rm ostat, please en su re that t he bare wir e en ds are he ld AL L the way i nt o the t er mi nal blo ck w hile th e sc rew is be in g ti ghtened.

WI RING BASE P LATE NOT ICE:

Th is thermo st at model is p art of a fa mily of s im ilar mo de ls that have th e same ge neral vis ua l appeara nc e. E ve n thoug h th is base p la te may lo ok t he same a s ba se plates f ro m other m od els, the wir in g connect io ns may ha ve d if ferent te rminal le tt ers for d if ferent pu rp oses. Pleas e do not in te rc hange t he b ack pla te s an d/or ther mo stat fron t ha lves of o th er simi la r looking m od els. Doing so m ay ca use undes ir ed heatin g an d/or co ol in g opera ti on t o occur.

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WI RING DIAG RA M NOT ES :

(I mportant, pl ea se read a ll n otes be fo re connec ti ng wires)

• If t he info rm at io n provi de d in the fo ll owing wir in g diagrams do es not cl early re present o r ma tch you r sy stem, please r ef er to t he “T EC HN ICAL ASSISTANCE ” se ction of th is manual , a nd c ontact us b efore r em ov ing any o f yo ur exis ti ng th ermostat wi ri ng.

• All o f th e dashe d wi res sho wn i n the wir in g diagrams ar e either op tional, or th eir usage d ep ends up on y our spe ci fi c syste m ty pe or b ra nd . For exa mp le: Di ag ram #1 sh ow s the fan w ir e as op ti on al. If your s ys tem doe s no t have a fa n, th an this t er minal w il l not be us ed .

• Term in al letter s shown in bl ac k represe nt typical wi ring applic at io ns. De pending u po n the bra nd of your sp ecific sy st em or the rm ostat, your te rm in al le tters may n ot match ex ac tly. Term inal le tt er s shown i n gr ay repr es en t other po ssible wi ri ng design at io ns that y ou m ight se e on your e xi st ing the rm os ta t te rminals.

• The o pt io nal “ C” terminal is used for p ow ering the t hermostat b y the 24-vo lt sy stem, using th e System Co mm on wire . This ca n be used a lo ne , o r in ad dition to i nstalling b at teries as a backup . NO TE : c on ne cting t he S ystem Co mmon wire t o the the rm ostat is no t necessa ry f or heating an d cooling t o fu nction pr op erly.

• If y our old t he rmostat h as b oth a “Y” and “C” wire both p resent, then “C” is mo st likely a System C om mon wire.

• For Heat Pu mp system s, yo u wi ll use ei th er the “O” termin al o r the “B” te rminal on t his therm os ta t, bu t not b ot h. I f your ol d th ermosta t ha s both an “O ” a nd a “B ” w ir e prese nt , t he n “ B” is l ik ely a S ys te m Commo n wi re and ma y be connecte d to the “C” termin al . Co nn ecting a Sy stem Co mm on wire t o th is th ermostat’s “B” termina l may damag e th e therm os ta t, an d also yo ur h ea ting an d cooling s ystem.

• So me Heat Pum p sy stems h av e a wire fo r AUX e lectric h ea t (usually W2), and al so a sepa ra te wire f or E mergenc y electri c heat (usual ly E). Th is thermo st at us es the W2 te rm in al for bo th AU X and Eme rg en cy He at . Tape o ff y our “E” wi re, a nd conf ir m that all co mp onents fu nc tion wi th ou t it.

• If r eplacin g an old th er mo stat that h as a mechan ic al cl oc k, th er e may b e tw o wi res label ed as “ C” fo r the c lock power. Tape o ff these wi re s and do no t co nnect the m to the “C” termin al o f this th er mostat.

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WIRIN G DIAGRA MS:

DIAGR AM SYS TEM T YPE / DE SCRIPTIO N PAGE #

#1 CO NVENTIONA L: HE ATING ..........................................................10

1- STAGE OR 2 -S TAG E 2, 3, 4, 5 WI RE S

#2 CO NVENTIONA L: HE ATING ..........................................................11

3- WIRE ZONE VA LVE 3, 4 WI RES

#3 CO NVENTIONA L: CO OLING ..........................................................12

1- STAGE 3, 4 WI RES

#4 CO NVENTIONA L: HE ATING AND CO OLING .....................................13

1- STAGE HEAT 4, 5 WI RES

#5 CO NVENTIONA L: HE ATING AND CO OLING .....................................14

2- STAGE HEAT 5, 6 WI RES

#6 CO NVENTIONA L: HE ATING AND CO OLING .....................................15

TW O-TRANSFO RM ERS 5, 6 WI RES

#7 HE AT PUMP: HE ATING AND CO OLING .....................................16

SI NGLE-STAGE O NLY 4, 5 WI RES

#8 HE AT PUMP: HE ATING AND CO OLING .....................................17

WI TH AUX / EM ERGENCY H EAT 5, 6 WI RES

Page 10

NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC

W1 A W2O B CG Y RC RH

1-STAGE OR 2-STAGE, HEATING ONLY

(INCLUDING MILLIVOLT)

(2-WIRE HEAT USE “RH” & “W1”)

Factory RH-RC Jumper Wire Installed

#12, 3, 4, 5 WIRES

HEATE R

STAGE

FAN

SYS TEM 24V

TRA NSFO RMER

SYSTEM COMMON

FAN WIRE

MAY NOT BE

PRESENT IN

ALL SYSTEMS

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NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC

W A

W1 A W2O B CG Y RC RH

HOT WATER HEATING ONLY

(WITH A 3-WIRE ZONE VALVE)

Factory RH-RC Jumper Wire Installed

#23, 4 WIRES

SYS TEM 24V

TRA NSFO RMER

SYSTEM COMMON

OPEN = Heat On

CLOSE = Heat Off

3-W IRE ZONE VALVE

OPE N CLOS E

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NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC

W1 A W2O B CG Y RC RH

1-STAGE, COOLING ONLY

Factory RH-RC Jumper Wire Installed

FAN

SYS TEM 24V

TRA NSFO RMER

SYSTEM COMMON

3, 4 WIRES

AIR

CON DITIO NER

Page 13

NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC

XW1

W1 A W2 CGO B Y RC RH

CONVENTIONAL (NON HEAT PUMP)

1-STAGE HEATING AND 1-STAGE COOLING

Factory RH-RC Jumper Wire Installed

FAN

SYS TEM 24V

TRA NSFO RMER

SYSTEM COMMON

HEATE R

AIR

CON DITIO NER

4, 5 WIRES

Page 14

NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC

XW1

W1 A W2 CGO B Y RC RH

CONVENTIONAL (NON HEAT PUMP)

2-STAGE HEATING AND 1-STAGE COOLING

Factory RH-RC Jumper Wire Installed

FAN

SYS TEM 24V

TRA NSFO RMER

SYSTEM COMMON

AIR

CON DITIO NER

5, 6 WIRES

HEATE R

STAGE

Page 15

NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC

W1 A W2O B CG Y RC RH

CONVENTIONAL (NON HEAT PUMP) 1-STAGE HEATING AND

1-STAGE COOLING WITH TWO SEPARATE 24V TRANSFORMERS

Factory RH-RC Jumper Wire REMOVED

FAN

HEAT 24V

TRA NSFO RMER

COO L 24V

TRA NSFO RMER

SYSTEM COMMON

HEATE R

AIR

CON DITIO NER

5, 6 WIRES

Page 16

NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC

W1 A W2O B CG Y RC RH

SINGLE-STAGE HEAT PUMP SYSTEM

WITH NO AUX OR EMERGENCY HEAT

FAN

SYS TEM 24V

TRA NSFO RMER

SYSTEM COMMON

4, 5 WIRES

HEAT PUMP

REV ERSI NG

VALVE

** Use “O” or “B”

Terminals, Never Both

CUSTOMER INSTALLED Y-W1 Jumper Wire

Factory RH-RC Jumper Wire Installed

Page 17

NOTE: THE BLACK TERMINAL LETTERS ARE TYPICAL, GRAY TERMINAL LETTERS ARE BRAND SPECIFIC

CUSTOMER INSTALLED Y-W1 Jumper Wire

W1 A W2O B CG Y RC RH

2-HEAT / 1-COOL, HEAT PUMP SYSTEM

WITH AUX AND EMERGENCY HEAT

Factory RH-RC Jumper Wire Installed

FAN

SYS TEM 24V

TRA NSFO RMER

SYSTEM COMMON

5, 6 WIRES

HEAT PUMP

REV ERSI NG

VALVE

** Use “O” or “B”

Terminals, Never Both

AUX / EM ERG.

HEAT

Page 18

COMPL ETE THE INSTALL:

GA S

EL EC

BATT ERY

IN STALL BATTE RI ES INTO T HE RM OSTAT: I ns tall tw o br and new E ne rgizer®or DU RACELL®“A A” s iz e alkalin e (only) ba tt er ies, into the th ermostat’s b at te ry co mpartment . En su re the ba tt er ies are i ns talled in t he prop er d irectio n.

GA S / ELEC CI RCUIT BOARD OPTI ON (“G” TERMIN AL FA N OP ERATION): T hi s se tting is a plastic s ho rting cap c al led a j um pe r. T hi s jumper mu st remain in stalled, and s et to eit he r GAS or EL EC TRIC fo r yo ur syst em t o work pr op erly. Th is settin g changes h ow y our sys te m’s blower fan ( if applic ab le ) is co nt ro lled wh ile the t he rmostat i s in HEAT or E ME RG HEAT mo de , w he n the Fan s witch i n th e A UT O posit io n. This s et ting do es n ot affe ct t he fan op er at ion whi le i n COOL mo de.

Wh en set to “G AS ”, th e blower fa n is contro ll ed solely b y the hea ti ng system it self. Syste ms t ha t would t yp ically us e the “ GAS” setting w ou ld be: natural g as, pr opane, or oi l fu rnaces, and bo il ers. NOTE: If yo ur b lo wer fan d oe s not o pe ra te pr operly af te r install at io n, mo ve the Ga s / Elect ri c option to t he “E lectric ” set ti ng .

Wh en set to “E LE C” , t he bl ow er fan is c ontroll ed di rectly by t he thermo st at . Th is settin g is requir ed for he at ing sys te ms that do no t co ntrol the ir o wn fan, such a s HE AT PUMPS, and u ni ts that on ly have a n el ectric- re si stive he at ing ele me nt as the h ea t so urce.

FRONT PAN EL IT EMS:

Th ese items b elow are al l located b eh in d the d oo r on the fr on t of th e th ermosta t. To open th e door, pull ou tw ards us in g the sma ll i ndentatio n in the ce nt er of the to p edge of t he thermo st at housin g.

HE AT / OFF / C OOL, SYSTE M MO DE SWIT CH : Se t this sw it ch to HEAT t o control yo ur heatin g sy stem, and CO OL t o contr ol y our coo li ng system . The OFF p os ition wi ll disabl e both the he at ing and c oo ling un it s.

Page 19

AU TO / ON, FAN MODE S WI TCH: Wh en this s wi tch is in AUTO , the b lo wer fan ( if

pr esent in yo ur system ) will auto ma ti cally c ycle on a nd off by i tself w hi le heating or cooling is running. When i n th e ON po si ti on, t he blower f an will r un c onstant ly wi th or wit ho ut a dema nd for heat in g or cool in g, ev en when t he S ystem M od e sw it ch is i n th e OFF p os it ion.

NO TE: Th e Fan Mod e sw itch only w orks if y ou r system pr ovides a wi re for th e th ermostat’s “G” wire te rm inal, to contr ol a blower f an . The Fan Mode s wi tch ha s no effe ct in syste ms that do no t ha ve a bl ow er f an (suc h as a hot wa te r ra diator sy st em ).

MU LTI-FU NC TI ON, S ET SLID E SW ITCH: This s wi tc h provide s an easy w ay to qu ickly acc es s the mos t commonly us ed thermo st at settin gs . This sw it ch has 4 in dividual po sitions, and u nl ess a s pe ci fic set ti ng is bei ng a djusted , thi s sw it ch sh ould alwa ys r emain i n th e RU N posit io n for the t he rmostat t o control t he room te mperature . The oth er S et Slid e sw it ch posi ti on s are d es cr ibed in g re ater deta il in the ADVAN CED FEATUR ES section. NOT E: th is s witch i s on ly oper ab le when t he th ermostat is i n “ Pr ogramma bl e” mo de . Whe n th e therm os ta t is used i n “M anual” contr ol m ode, all 4 o f th e switch po si tions w il l act lik e th e RUN po sition, exce pt t he “A IR FILTER” positio n.

UP / DOWN B UT TONS: The UP a nd DOWN b ut to ns are us ed to adj us t an y item th at can be c ha nged by t he user. Exa mp le s are t he s et temp er at ures, cloc k ti mes, and day s of the we ek . In m an y cases , an it em may be f la shing i f it can cu rrently b e adjusted.

HO LD BUTTON : T hi s button ac ti va tes and d ea ctivates th e manual Temp er at ure Ho ld featur e.

EM ER BUTTON : W he n in Norm al R un mode , the u sa ge of thi s bu tton va ri es de pending u po n your sp ec ific syst em configur at io n. For he at p ump sys te ms , pr essing th is button e na bles your e mergency heat func ti on, w hich is d es cribed in gr ea ter det ai l in the OP ER ATING INST RU CT IO NS sect io n. For conve nt ional sy stems, there i s no such t hi ng as e me rg ency he at , s o this butt on will hav e no ef fect.

NE XT BUTTON : T hi s button is m ostly u se d while s et ti ng item s su ch as s of tw are op tions, and t em pe ra ture pr og ra m perio ds . When th er e are s ev er al item s on the sc reen that c an be cha ng ed , u su ally on e of them i s fl ashing in di ca ting th at i t can be adjusted . Pr es sing th e NE XT butt on w ill cycle th ro ug h which i te m is fl as hi ng.

Page 20

SYS TEM C ONFIGURAT ION AND SETUP OP TIONS:

Se tup optio ns for how th e thermos ta t wi ll func ti on , a lo ng with c ho osing y ou r pa rticular sy stem type , a re p erforme d us ing a m en u on the di sp lay scr ee n.

TO ACCESS T HE SETUP ME NU : Move th e Sy stem Mo de s wi tch int o th e OFF po sition, and th en hold d ow n th e EMER bu tt on for ap pr ox imately 5 s econds un ti l th e screen ch anges. Th e menu wi ll always s ta rt with i te m #1, a nd is a dv an ced to ea ch follow in g item by a s ingle p re ss of the N EX T butto n. The op ti on s for e ac h it em are ch an ged using t he UP or DO WN button s.

IT EM #01 (C LK = CLOCK FO RMAT): [ 12Hr, default ] Thi s displays th e clo ck times us ing stand ar d A M and PM va lu es. [24Hr] This di sp lays th e clock t im es using th e mi litary-time f or mat (exam pl e 22:00 h ou rs, w ithout us in g A M or PM).

IT EM #02 (T MP = TEMPER ATU RE SCAL E) : [ F, defaul t] S hows all te mperature va lues in Fahrenhe it . [C ] Shows all t emperatur e va lues Ce ls iu s.

IT EM #03 (T HE RMOSTAT TYP E) : [P ROG, default ] Us e this se tt ing for f ol lowing a da ily progr am routine. [ MA N] Th is settin g om its the p ro gram ro ut in e and op erates as a m anual s ty le non-pr og ra mmable th er mostat. T hi s is ve ry b as ic and on ly shows th e room te mp er at ure and s et temper at ur e on the sc re en, with no clock.

IT EM #04 (P ER D = PERIO D QUANTITY) : [4 P, de fault] Thermos ta t uses fo ur pe riods per d ay (calle d MORN, DAY, EV E, an d NITE). [2P] The th er mostat us es t wo pe riods per d ay (calle d DAY and NI TE ).

IT EM #05 (R CV = EARLY RECOVE RY): [OFF, default ] Program S et Tem perature va lues star t to occur at e xactly th e period st ar t times . [O N] E arly Re co ve ry af fects how t he transi ti on occurs w he n chang in g from th e NI TE to t he M ORN pe riod, and wh en c hanging f ro m the D AY to the EVE pe riod. T he thermost at ca lculates ho w lo ng it t ak es for yo ur h ome to re co ver fro m a setback o n a daily ba sis, and tur ns o n ahead o f time in o rd er to r ea ch the ta rg et set po in t of the ne xt upcomi ng program pe riod by t he period’s st art time. While in a recovery, th e word “RECO V.” will be s ho wn on the d is play scre en .

IT EM #06 (S YSTEM M OD E) : [ FU RN , d efault] This i s for the m aj ority of he at ing sy stems tha t ar e not H ea t Pu mps, such as a g as furn ac e or hot wa te r boiler. [H P] Us e this se tt ing if yo u ha ve a He at P um p syste m, wh ic h uses th e ou tdoor u ni t as th e primary h ea t source an d may also co ntain an el ectric he at in g element a s a ba ckup heat s ou rce. Wh en set to “HP” , ens ur e that you ha ve also set t he Ga s/Electri c circuit b oa rd option t o “ EL EC”, as desc ri be d in th e “CO MP LE TE TH E IN STALL” sec ti on .

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IT EM #07 (D LAY = DELAY T IM E) : [ 5, de fa ul t] Th ermosta t wa it s 5 min ut es before

tu rning the s ystem bac k on after it was last r un. T hi s interna l de lay pre ve nt s ra pi d cyc ling an d pr ovides eq ui pment p ro te ction. The 5 min ut e setting i s fine fo r mo st applic at io ns . [2 ] Same op er ation as ab ove but r ed uced to 2 m inutes be tween sta te c hanges.

IT EM #08 (T EM PERATURE S WI NG): A thermosta t wo rks by tu rn ing your he at ing or cooling sy stem on a nd off when ev er the ro om temperat ur e varies fr om the de sired set -p oint temp er at ure. T he a mount o f th is vari at io n is call ed t he swing.

Us e the UP/ DO WN button s to change t he number v alue betw ee n 1 and 9 . Ge nerally y ou r system sh ould cy cle o n ab out 3 t o 6 times p er h our. A smaller sw in g numbe r ma kes the s ys tem cycle mo re f requent ly, so t he room t em pe ra ture is more pre ci se and co ns tant. A la rger swin g nu mber wi ll m ake the s ys tem re main on f or a longer d uration e ac h time an d de creases t he number o f cycle s pe r hour.

IT EM #09 (S TAG E-2 OFFSE T) : [2, d efault] This s et ting is a dj usted as a number fr om 0 to 9 . When s et t o 0 (ZE RO ), th e second he at in g stage i s completel y di sabled wh il e in regu la r Heat mo de ( ho wever E me rg ency He at mode w il l still fu nction fo r heat pump c on figuratio ns ). An Of fs et value fr om 1 to 9 d eg rees wi ll de termine t he number o f degrees f ro m the set p oint that w il l be re qu ir ed for th e se cond heat in g stage to tu rn on. T hi s setting c an be use d to conser ve e ne rg y in si tuations wh er e the s ec on d heating s ta ge is mor e co stly to o pe rate when co mpared to t he first st ag e.

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70˚F Set

Temperature

DEGREES (F)

** = Only applies if a second

heat stage is present

Swing

Setting=

#2 (+/- 0.5˚F)

Cut-In / Cut-Out

Stage)

Stage) **

Cut-In / Cut-Out

Offset ** Setting= 4˚F degrees

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PERIOD

MORN

DAY EVE

NITE

HEAT MODE

6:00 AM 70

°F (21 °C)

8:00 AM 62

°F (17 °C)

6:00 PM 70

°F (21 °C)

10:00 PM 62

°F (17 °C)

COOL MODE

6:00 AM 78

°F (26 °C)

8:00 AM 82

°F (28 °C)

6:00 PM 78

°F (26 °C)

10:00 PM 75

°F (24 °C)

OPERATING INST RUCTIONS :

SE T DAY AN D TIME: P la ce the Se t Slide Swi tc h into th e DAY /TIME p os it ion. Wi th

th e day fla sh ing, press U P or DOWN t o se t the d ay o f the w ee k. P re ss NEXT a nd th e clo ck time wil l start fla sh ing. Use UP o r DOWN to s et the time , mak in g sure th e A M/ PM indi ca ti on is cor re ct . Ho lding t he U P or DO WN b uttons wi ll make t he clock d ig its scrol l ra pidly. Return th e Set Sli de s witch to th e RU N positio n when fi nished.

HE ATING AND CO OLING: Basic o pe ra tion of y ou r heating o r cooling s ys tem can be obtained w ith the S et Slide Sw it ch in the R UN p osition a nd choosi ng e ither HE AT or COOL o n the Sys te m Mode swit ch . The t em perature ca n be adju st ed us ing the U P and DOWN bu ttons. Wh en the th er mostat is f ir st powere d up , i t will fo llow a de fa ul t tempe ra tu re routin e th at is pre se t from th e fa ctory (show n be lo w).

EM ERGENCY H EAT: (Heat Pump C onfigurat io n Only). Wh ile in no rm al Heat m od e wi th the Se t Slide swi tc h in the RUN po si tion, one si ng le press of the EMER bu tton will a ctivate E me rg ency He at mode. A single pr es s again w il l end Em ergency Heat mode, and re turn back t o normal He at mode. Wh ile in Em ergency Heat mode, the wo rd “E MER” will al so b e shown i n th e middl e po rtion of the disp la y screen. I f a po wer los s oc curs wh il e in Emer ge ncy Hea t mo de, t he th ermostat wi ll contin ue t o remai n in Emerge ncy Heat mo de even aft er the powe r co mes back on .

Em ergency Heat mode wi ll preven t the first s ta ge of you r heat pump s ys tem fro m tu rning on, an d us e only th e “ W2 ” h ea t te rminal (A ux iliary Heat ) as the pr im ar y he at ing sou rc e. This w il l not o nl y prevent t he heat pum p fr om wast in g energy if ou tdoor tem pe ra tures a re t oo low to s up port ef fi ci ent ope ra ti on , b ut it cou ld also pr event dam ag e to the he at p ump if ou ts ide tem pe ra tu res are b el ow the ma nufacture r’s recommen da ti ons. As e very heat pum p has diffe re nt operatin g

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ch aracteris ti cs, y ou shou ld r efer to y ou r heat pu mp l iterature t o determi ne w hen to disable th e heat pu mp a nd run in E mergenc y Heat mode . In g eneral fo r most he at pump s ys te ms, u se Emer ge ncy Hea t mo de when ev er the ou ts id e te mperature i s less th an 3 2°F (0° C) d egrees.

LC D DISPLAY BA CKLIGHT: The di splay scr ee n is ligh te d to assi st viewing at ni ghttime, or in l ocations wi th low ligh t le vels. A press of a ny button o n the front pa nel will li ght the d is play for ap pr oximately 1 0 seconds . Any butto n presses th at occur wh il e the l ig ht is on wi ll reset th e 10-seco nd t imer, causi ng t he scre en to remain i ll uminated fo r an addi ti on al 10 s ec on ds.

TE MPERATURE OV ERRIDE: While in Program RUN mo de, t he set te mp erature c an be temporar il y changed b y pressin g UP or DOW N. The se t tempera tu re w ill ret ur n to the prog ra mmed valu e stored in m emor y when th e start t im e of the ne xt up coming pr og ram perio d is reache d (Morn, Day, Eve, Nite). W hile a Temp or ar y Ov erride is i n effect, th e wo rd “O VERRIDE ” wil l be shown in t he displa y sc reen. An Override m ay be can ce lled movi ng the mode s wi tch to OF F, then b ac k to HE AT or COOL.

TE MPERATURE HO LD: A Tem perature Ho ld is use d fo r maint ai ni ng a fi xe d set te mperature . On ce a Hold i s in itiated, the t he rm ostat wil l maintain th e set te mperature i nd efinite ly. A Hold m ay be used fo r days, weeks, or e ve n month s at a time, as lon g as the th er mo stat has ad eq ua te power. To e nt er Hold m od e: pr ess the H OL D button on e time an d the word “HO LD ” w il l ap pear in t he displa y. To cance l a Hold, press th e HOLD bu tt on one mo re t ime. If a c om pl ete power fa ilure occ ur s during a Te mp erature H ol d, th e thermos ta t will cont in ue to rem ai n in Hold mod e even afte r the power c om es back o n. N OT E: If you pl an t o leave th e thermos ta t in Hold m od e for a n ex tended du ra ti on (una tt en de d), it is ad visable t o install n ew Energize r

or DURACELL®"A A" size a lk aline bat te ri es

pr ior to le av in g to en su re reliab le o peration of y our hea ti ng a nd cool in g system.

STAT IC NOTI CE : T hi s therm os ta t is prot ec te d against n ormal sta ti c electric di scharges, ho we ve r to mini mi ze the ri sk o f damagin g th e unit in e xtremel y dr y we at her, please t ou ch a gr ou nd ed meta l ob ject be fo re touchi ng y our the rm os tat.

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TEMPE RATU RE PR OGRAMS:

By default, th is t hermost at h as 4 sepa ra te p rogram pe ri ods for b ot h Heat an d Co ol mode, the y ar e: MO RN, D AY, EV E, an d NI TE. Each pe ri od ends a t th e start ti me of the f ollowing pe ri od. T he h ea t progr am s are set i n HEAT mod e, an d th e co ol progra ms are set in COOL mod e.

NO TE: I f the t he rm ostat is co nf igured to u se only 2 p eriods pe r day ins te ad of 4 (S YSTEM CON FI GURATION AND SE TU P OPTIONS ), th e thermosta t wi ll only u se the DAY and NITE p eriods. T he MORN a nd EVE peri od s will no t be visibl e on the sc reen.

SE T TEMPERAT UR E PROGRAM S: M ove the S et Slide swit ch to the TEMP P RO G po sition. Pro gr am ming wi ll s tart wi th a ll 5 we ek da ys, M onday t hr ou gh Fr id ay (all gr ouped tog et her). Use t he U P/DOWN bu tt ons to ad ju st the st ar t time fo r the MO RN period , t he n press t he N EXT but to n to adva nc e. U se the UP /D OW N butto ns to adjust t he set temp er at ure for t he MORN p er io d, th en pres s th e NEXT bu tt on to ad vance. Now ad ju st the st ar t time an d se t tempe ra tu re for th e DAY period, pr essing th e NEXT butt on after ea ch to advan ce . Co ntinue wi th these sa me steps to adjust t he start ti me s and set t emperatur es f or the EV E and NIT E pr ogram pe riods.

Wh en the NI TE period i s finished fo r the wee kd ays, the the rm os ta t will ad va nce fo rward to th e weekend p rogram, with t he MORN p er io d start t im e flash in g. You wi ll be set ti ng the pr og ram perio ds for both S at urday a nd S unday ( gr ou ped to gether). Pe rform the s ame steps t ha t you use d for setti ng the week da y pe riods, press in g the NEX T bu tton to a dv ance th ro ug h each fl as hing va lu e. Re turn the Se t Slide s wi tc h to th e RU N po sition wh en you ar e fi nished.

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ADVANC ED FE ATUR ES:

TE MPERATURE CALIBRATIO N: The in ternal te mp erature sen so r in this t hermostat

is accurate ly c alibrated a t th e facto ry, and in m ost cases a lterations to this se tting sho ul d not be ne eded. T he Tem perature Ca libration f ea tu re allows y ou to ma nually of fs et the me as ured temp er at ure by as m uch as pl us or min us 5 °F (3 °C) degre es from its o riginal v al ue. T hi s feature c an b e usefu l to match or sy nchronize t his therm os ta t to an ot he r one o r mo re, i f multi pl e thermos ta ts a re us ed in the s ame home.

NO TE: Th e Temp er ature Cal ib ra tion sett in g need to b e perform ed in a tim el y ma nner, as th e th ermosta t wi ll timeou t an d autom at ic ally exit t he adjust me nt sc reen afte r ap proxima te ly 1 0 secon ds w ithout a bu tton pr es s.

TO CHANGE THE TEMPE RAT UR E CALIBRAT IO N: En su re that t he System M od e sw it ch is i n th e OFF p os it ion and t he Set Sl id e sw itch is i n the RUN pos it ion. Pr ess and h ol d both th e UP and DO WN buttons to gether fo r at least 5 se conds. Th e words “SET ” and “CAL” wi ll appear o n the scr ee n, al on g with a si ngle fl ashing te mp erature d ig it . U se the UP /D OW N butto ns t o chang e th e numbe r of de grees of ad justment. 0 ° de grees i s th e defau lt v alue, and me an s no corr ec ti on is being ap pl ie d. P ress th e NE XT butt on t o accep t th e setti ng .

TE MPERATURE LI MIT STOPS : T here are tw o indepen de nt set te mp erature lim it st ops: a maxim um h ea t set t em pe ra ture, and a mi ni mum coo l se t tempe ra tu re. Th ese stops d o not pre ve nt a user f rom perfo rm ing norma l actions l ik e Temperatur e Ov erride or H old. Th e Heat Limi t Stop prev en ts the se t temperature fr om being ad justed hi gh er than t he heat lim it s etting. T he Cool L im it Stop pr events th e set tempe ra tu re from b ei ng adju st ed lower th an t he cool l im it se tting. Each o f these t em pe ra ture st op s is user a dj ustable i n one-deg re e in crements, an d th ese set ti ng s are p ro te cted by a s electab le 2 -digit co de to pr event una ut horized t am pering. By de fa ult, this 2- di gi t code is “0 0” , a nd t he te mperature s to ps can be u sed as- is w ith thi s co de.

NO TE: Th e Temp er ature Lim it Stop set ti ngs need to be perfo rm ed in a t im ely ma nner, as th e th ermosta t wi ll timeou t an d autom at ic ally exit t he settin g screens af ter appro xi ma te ly 10 s ec on ds with ou t a butto n pr ess.

TO SET THE HEAT L IM IT STOP: Place t he System M ode switch in the OFF po sition, an d the Set S lide swit ch i n the R UN posit io n. P ress and ho ld the UP b utton whi le sl iding the S ystem Mod e sw itch fr om O FF to H EAT. Th e words “STOP” and “LOCK CO DE” w ill appea r on the sc re en , a lo ng with t wo digits . Use t he UP/DOW N bu ttons to se lect the pr oper code t o access th e heat li mi t setting . Pr es s the

Page 27

NE XT button t o accept th e setting . If t he code y ou tried wa s not cor re ct , t he

BLANK PAGE

th ermostat wi ll exit a nd r eturn t o th e Norma l Ru n scree n wi th no c ha ng es made . If the ente re d code is c orrect, the sc re en will a dd the wo rd “S ET ” a nd d isplay th e cu rrent hea t se t tempe ra tu re limit. Use t he UP/DOW N bu ttons t o ad just th e ma ximum hea t se t tempe ra tu re value. Pre ss t he NEXT b ut ton to ac ce pt the se tting and r eturn to th e Normal Ru n screen in heat mod e.

TO SET THE COO L LI MIT STO P: Pl ac e the Sys te m Mode swit ch i n the O FF p osition , an d the Set S lide swit ch i n the R UN posit io n. P ress and ho ld the DO WN button wh ile slidi ng the Syst em Mode swi tc h from OF F to COOL. Th e words “STO P” an d “L OCK CODE” wi ll a pp ear on th e screen, alon g wi th two di gi ts. U se the UP /D OWN bu ttons to se lect the pr oper code t o access th e cool li mi t setting . Pr es s the NE XT button t o accept th e setting . If t he code y ou tried wa s not cor re ct , t he th ermostat wi ll exit a nd r eturn t o th e Norma l Ru n scree n wi th no c ha ng es made . If the ente re d code is c orrect, the sc re en will a dd the wo rd “S ET ” a nd d isplay th e cu rrent coo l set tempe ra tu re limi t. U se t he UP/D OW N buttons t o adjust th e mi nimum coo l set tempe ra tu re valu e. P re ss the NE XT b utton t o ac cept th e se tting and r eturn to th e Normal Ru n screen in cool mod e.

TO CHANGE THE TEMPE RAT UR E STOP LO CK CODE: Place t he System M od e switch in the OFF po sition, and th e Set Sli de s wi tch in th e RU N positio n. P re ss and ho ld th e NEXT bu tt on for at l ea st 5 se co nd s. Th e wo rds “ STOP” and “LOCK C OD E” wi ll ap pe ar on t he s creen, along w it h two d ig it s. Us e the U P/ DO WN butt on s to ente r th e current c ode (“00” by d ef ault) a nd p ress th e NE XT butt on o ne time . The wor d “S ET” w ill now b e di splayed . Us e th e UP/DO WN b uttons to c hoose a n ew 2-digi t co de betwee n “ 00 ” a nd “9 9” . Pr es s the N EX T button to a ccept t he s etting. T he sc reen will f lash brie fl y to conf ir m the cod e change, and re tu rn to t he N ormal Ru n screen in Off mode .

IF YO U FORGET YOUR TEMPE RAT UR E STOP CO DE : The co de can be r es et to the fa ctor y defau lt “0 0” by p erforming t he followin g steps. Place th e System Mo de sw it ch in t he O FF posi ti on , a nd the Se t Sl ide switc h in the RUN po si tion. Press an d hold th e NEXT and HO LD button s together fo r at leas t 10 second s. The sc reen will s tart flas hi ng, a nd disp la y words “SET”, “S TOP” and “ LOCK CO DE ”, al ong with th e new cod e of “0 0”. A ft er a coup le s econds, the sc re en will au tomatical ly r eturn t o th e Norma l Ru n scree n in Off mo de .

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KE YPA D LOCKO UT: You can lo ck t he fron t pa nel but to ns to pre ve nt unauth or iz ed

ta mpering o f your ther mo stat sett in gs .

NO TE: Th es e keypad lo ck instru ct io ns need t o be perf or me d in a ti me ly mann er. Th e 4-butto n sequence wh ich locks t he thermo st at must b e en tered w it hi n a 10- se cond time fr ame, or the ke yp ad lock ou t sequenc e wi ll have t o be entere d ag ai n fr om the be gi nning.

TO LOCK THE KE YPAD: Star t wi th the Sy st em Mode s wi tc h in ei th er the HE AT or CO OL positi on s, an d the S et S lide swit ch i n the R UN posit io n. Perfor m a single pr ess of ea ch button, in th e following s eq uence: NEXT, N EX T, NEXT, HO LD.

TO UNLOCK THE KE YPA D: St ar t with th e Sy stem Mo de s wi tch in ei th er the HE AT or COOL pos it ions, and th e Se t Slide s wi tc h in th e RU N position. Per form a si ng le pr ess of ea ch button, in th e following s eq uence: NEXT, N EX T, NEXT, HO LD. The pa dlock sho ul d no long er be prese nt , w it h the t he rm ostat now u nl oc ked. If the pa dlock is st ill on th e screen, plea se t ry to enter t he 4-butt on sequence a ga in.

AI R FILTER M ONITOR: I n mo st syst em s that use a bl ower fan an d air duc ts , t he re is an air f il ter that is e ither r ep la ceable or r equires cleaning . The fil te r is usua ll y lo ca ted in th e air han dl er, wh ere the b lo wer fan i s. This t he rmostat fea tu re as sists you w ith keepi ng track of p roper mai nt enance an d/ or period ic re placement i nter vals fo r yo ur syst em ’s filter.

Th e A ir Filt er Monitor co unts the du ra tion of f il ter usage t ha t has occ ur re d, si nce th e last ti me the Fi lt er Moni to r has bee n re set. Th is feature is for info rm at ion pu rposes on ly, an d does not af fect the op eration of yo ur heating or cooling eq uipment, or th e thermos ta t. When t he f ilter u sa ge duration h as complete ly ex pired, the w or d “ FI LTER” wil l fl ash on th e screen.

TO SET THE A IR FILTER DURATI ON : M ov e the Set S lide switch t o the “AIR FILTER” po sition. T he word “DAYS” will be shown on t he screen , alo ng w ith the w or d “F ILTE R” an d 2-3 chara ct ers at th e to p right c or ner of th e display. Press e ither of the UP/D OW N buttons t o select th e desired f ilter dur at io n (in d ay s) from t he fo llowing c ho ic es: O FF, 3 0, 60 , 90, 120, 180, or 3 65 . If the fi lt er duration v al ue is set to “OFF ”, th en t he Ai r Fil te r Monitor w ill be co mp letely di sa bled. Return th e Set Sli de s witch t o th e RU N posit io n when yo u ar e finis he d.

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TO RESET THE F ILTER US AG E COUNTER : Mov e the Set S li de switch t o the “ AIR

HW RST

FI LTER ” pos it ion. Th e three s ma ll digits a t th e top o f th e scree n te ll you th e qu antity of f ilter day s remaining . Pr es s both th e UP and DO WN button s to gether, an d the usa ge c ounter wi ll return t o the beg in ni ng of t he v alue th at i t origina ll y st arted cou nt ing from. R ef er to the p re vious p ar ag ra ph , s ho uld you w is h to ch ange the st arting va lu e for the f ilter mon it or. Return t he Set Sl id e sw itch to th e RU N posit io n when yo u ar e finis he d.

HA RDWAR E RE SET: The Ha rd ware Rese t button (l ab eled “HW RS T”) is a sm all round p ush butto n that is l oc at ed in the mi ddle of t he circuit bo ard, just be lo w th e battery hol de r. Pr essing th is button w il l cause t he LCD disp la y screen to be come full y populated , the h ea ti ng and co ol ing loa d re lays to cycle o ff, a nd will p er form an i nt ernal s ys te m check o f the th ermostat co mp onents. If yo ur thermo st at a ppears to b e acting in an erratic ma nner, press in g the Har dw ar e Reset b ut ton may r em ed y this be ha vior. Th e te mperature p ro grams a re n ot eras ed w hen a h ar dw are res et i s perfo rm ed , ho we ver the clock wi ll have to be c hanged to m at ch the cu rr ent day a nd time.

SO FTWAR E RE SET: A Soft wa re Reset is used to er ase A LL heating an d cooling te mperature p ro grams, and t o re turn al l us er- ad justabl e so ftware se tt ings ba ck to their or ig inal fact or y de fault v al ue s. To perform a S oftware R es et, f irst ensu re th at the th er mo stat’s Keypa d Lockout i s not enabl ed and then m ove the S ys tem Mo de switch t o the OFF p os ition. Pres s an d hold th e UP, D OWN, and NEX T bu ttons all t ogether f or a t least 5 s econds. T he LCD di sp lay scr ee n will be co me fu lly popul at ed (let g o of button s at t his poi nt ), an d than re tu rn to nor ma l. The clock w il l have to b e changed t o ma tch the c ur rent day an d time.

CO MPRESSOR PR OTECT IO N BYPASS: T hi s optiona l feature per mi ts the in st aller or ser vice te ch ni cian to t em poraril y di sable t he b uilt in c om pressor p ro tection de lays. T hi s is mo st u seful f or d ia gnosing a nd testin g th e heating a nd coolin g sy stems aft er installa ti on is com pl et e, an d shoul d no t be us ed d uring n or ma l op eration. To activ at e this featur e, pr es s and hol d both the NE XT and HO LD bu ttons, while a ls o perfo rm a single p re ss of t he H ardware R es et butt on ( the LCD di splay scr ee n will be co me fully po pulated). Con ti nu e to ho ld t he NEXT a nd HO LD button s until the L CD displa y screen re tu rns to no rm al. A ll c ompress or pr otection de lays (in al l modes o f operation ) wi ll be d is ab led for 5 m inutes. A fter th e 5-minut e duration ha s expired , the t he rmostat w il l return to n ormal o pe ra tion au tomatical ly.

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BATTERY REPL ACEME NT:

Th is thermo st at is power ed b y two “AA” A lk al ine batte ri es . The b at teries sh ou ld be replaced AT LE AS T once pe r year to e ns ure relia bl e operation ( or sooner i f “L O BATT” appears i n the displ ay screen). The batt er ie s are l oc at ed on the b ac k of the ther mo stat’s circu it board. T he front po rtion of th e thermos ta t can be re moved fro m the back ha lf by usi ng the tabs o n the top e dge of th e thermosta t ho using.

Wh en instal li ng new ba tt er ies, we reco mm en d using o nl y brand n ew Energi ze r

or DURACELL®, “AA” size alka li ne batterie s. P le ase obs er ve t he polari ty ma rkings sh ow n in the ba tt er y compartme nt to ensur e proper in st allation. W hen fi nished, line u p the fro nt o f the t he rm ostat to th e base, and fi rm ly press to ge ther to securely l at ch the fr on t and b ac k halves to ge ther pr op er ly.

BAT TERY GR AP HIC: An yt ime tha t ba tt eries are ph ysically pr esent in th e thermos ta t, th er e will be a visual in di ca tion of t he remain in g ba ttery life av ai lable o n th e therm os ta t’s display sc reen. Wh en brand ne w batteri es a re inst al le d in th e ba tt er y compart me nt, t his graph ic sh ould indi ca te full b at te ry l ife remai ni ng with a ll bars pre se nt.

Ov er time, as th e ba ttery life de creases t o the po int of ha vi ng only 1 b ar left, the Tempe ra tu re an d Clock d ig its will st art to al te rnate bet we en sh ow ing the ir n ormal c on te nt, a nd the wo rd s “ LO BAT T”. At th is point th e batteries w ill need to be repla ce d as soon a s practic al to av oi d unint er ru pted op er at io n of yo ur h ea ting an d/ or coolin g sy stem. In mo st ca ses, the the rm os ta t will be c ap able of p ro viding yo u approxima te ly two mont hs of normal o pe ra tion on ce t he poin t of 1 bar le ft has be en r eached, and th e screen sh ow s the w or ds “L O BATT”.

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TECHN ICA L ASSISTA NCE:

If you have a ny p roblems i ns talling o r using t hi s thermos ta t, pl ea se carefu ll y and th oroughly re view the in struction m anual. If yo u re quire a ss is tance, pleas e co ntact our Tec hn ical Assista nc e departm en t at 856-23 4- 88 03 duri ng r egular bu siness ho ur s between 8 :00AM and 4 :30PM Eas te rn Standa rd Time, Monday th rough Friday. You can also r eceive te ch nical ass is tance onl in e anytime d ay or ni ght at ht tp :/ /www. luxprop ro du cts.com . Our w eb site of fe rs you tr ou bl eshooti ng gu ides, answers to t he most c om mon tec hn ic al ques ti on s, an d also pe rm its you to email yo ur question s to our te ch nical sup po rt staff at y our con ve ni ence.

LIMIT ED WARRANTY:

If this uni t fails bec au se of def ec ts in mat er ia ls or w or km anship wi th in thre e ye ars of th e da te of o ri gi nal pur ch as e, LU X will, at its o pt ion, repair or replace it . Th is warran ty does not c over dama ge b y accid en t, mi su se, o r failu re t o follo w in stallatio n in structi on s. I mp lied wa rr an ties ar e li mited i n du ra tion to t hr ee year s fr om the da te o f origi na l purchas e. S om e states do n ot allow li mi ta tions on ho w lo ng an imp li ed warran ty lasts, so t he a bove li mi ta ti on may no t ap ply to yo u. Pl ease retu rn malfunct io ning or d ef ective un it s to the lo ca tion fr om w hich th e pu rchase wa s made, along wi th proof of p urchase . Pl ea se refer to “T EC HN ICAL AS SISTANCE” befor e returning t hermostat. Purc ha ser assum es all risk s and li ability f or incident al and cons eq uential d am ag e resul ti ng from i ns ta llation a nd us e of this u nit. Some s ta te s do not al lo w the exc lusion of i ncident al o r co nsequenti al damages, so t he a bove ex clusion m ay not appl y to you. T hi s wa rranty gi ve s you spe ci fic legal r ights and y ou may al so have oth er r ights, wh ich vary fr om s tate to s ta te . Appli ca bl e in th e U. S.A. and Can ad a only.

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MERCU RY WAR NING AND RECYCLI NG NOTICE:

HOLD

Me rcur y is co ns id ered to b e a hazar do us material . If t his produ ct is repla ci ng a th ermostat th at c ontains m er cury in a s ea led tube, cont ac t your lo ca l waste ma na gement au th ority f or i nstruct io ns regard in g recyc ling an d pr oper di sp os al. It may be u nl aw ful in yo ur state to p la ce it i n th e trash .

Mt . Laur el, New Jer sey 08054, US A

ht tp://ww w.luxp roprodu cts.com

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Lux Products P521Uc User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual