Manuale d’uso / di manutenzione del prodotto CHRONOTHERM T8621A del fabbricante Honeywell
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1 68-0058—1 T8621A,C,D Chr onotherm™ III Fuel Sa v er Thermostats C . H. • Rev. 8-92 • ©Honeywell Inc. 1992 • Form Number 68-0058—1 ■ Full seven-day program capability; different sched- ules may be selected for every day.
2 T8621A,C,D SPECIFICATIONS • ORDERING INFORMATION Specif ications IMPORTANT: The specifications given in this publica- tion do not include normal manufacturing toler- ances.
3 68-0058—1 T8621A,C,D SPECIFICATIONS TABLE 2—TRADELINE MODELS. Thermostat Model Stages Changeover Switching Number Heat Cool Type System Fan Application T8621A* 1 1 Auto HEAT-AUTO- ON-AUTO Single.
4 T8621A,C,D SPECIFICATIONS • SELECTION/APPLICATION Fig. 2—202905AA Remote Temperature Sensor dimensions in in. [mm]. 4 3 32 [104] FRONT 1 31 32 [50] SIDE M5244 2 [51] 1 31 32 [50] 41 64 [16] 3 8 1 19 64 9 64 1 2 [8] [4] DIA. [13] [35] 1 [25] BACK Fig.
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10 Fig. 9—T8621C 2-stage heat/1-stage cool thermostat with HEAT-AUTO-COOL-OFF system and AUTO-ON fan switching. NOMINAL 24 Vac POWER MUST BE PRESENT BETWEEN R AND C FOR THERMOSTAT OPERATION.
11 68-0058—1 Fig. 10—T8621D 2-stage heat/2-stage cool thermostat with HEAT-AUTO-COOL-OFF system and AUTO-ON fan switching. APPLICABLE ONLY ON T8621D MODEL WITH REMOTE SENSOR. RECOMMENDED INTERCONNECT CABLE: 18-GAUGE THERMOSTAT CABLE, 200 ft. [61 m] MAXIMUM LENGTH.
12 T8621A,C,D INSTALLATION Fig. 11—T8621D 2-stage heat/2-stage cool thermostat with HEAT-OFF-COOL system and AUTO-ON fan switching; auto fan on heat and cool; convertible to auto fan on cool only. FOR ELECTRIC HEAT APPLICATIONS (AUTO FAN OPERATES WITH W1 AND Y1).
13 68-0058—1 T8621A,C,D INSTALLATION Fig. 12—T8621C,D single stage heat pump with heating changeover. HEAT-AUTO-COOL-OFF system and AUTO-ON fan switching. M1547C SYSTEM TRANSFORMER R C W1 W2 Y2 Y1 G RC FAN RELAY HIGH LIMIT HIGH LIMIT L1 (HOT) L2 HEAT AUTO COOL SYSTEM SWITCH AUTO ON FAN SWITCH T8621D ONLY.
14 T8621A,C,D INSTALLATION Fig. 13—T8621C,D single stage heat pump with cooling changeover. HEAT-AUTO-COOL-OFF system and AUTO-ON fan switching. 4 5 6 RECOMMENDED INTERCONNECT CABLE: 18-GAUGE THERMOSTAT CABLE, 200 ft. [61 m] MAXIMUM LENGTH. ROUTE INTERCONNECT CABLE AWAY FROM SOURCES OF ELECTRICAL NOISE.
15 68-0058—1 T8621A,C,D INSTALLATION Fig. 14—T8621D single stage heat pump. HEAT-OFF-COOL system and AUTO-ON fan switching. M1546 A SYSTEM TRANSFORMER R C W1 W2 B HEATING CHANGEOVER RELAY O Y2 Y1 .
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17 68-0058—1 T8621A,C,D INSTALLATION • CHECKOUT Fig. 17 — Mounting thermostat on subbase. M 843 PM MORNIMG MON HEAT ON ROOM SYSTEM A U T O P M M O R N IM G M O N H E A T O N R O O M SYSTEM RUN P.
18 System Press Look For This Response Switch This Key Position Key Down Key Released OFF 06 Blank 02 Blank 05 Blank 04 Blank 01 Blank 00 Blank (CHECK 12 See note A . EACH POSITION) OFF 08 Blank 1 3 Microprocessor mask no. and revision no. 09 Blank 14 Blank HEAT or 14 1st stage heating and AUTO SYSTEM LED on.
19 68-0058—1 T8621A,C,D CHECKOUT • PROGRAMMING THE THERMOSTAT Cycle Rate Setting (cph at 50% on time for stage First 1 on 1-heat models, stage Digit 2 on 2-heat models) 01 13 29 36 Third Manual or.
20 T8621A,C,D PROGRAMMING THE THERMOSTAT STEP 2 SET THE PROGRAM TIMES AND TEMPERATURES FOR ONE DAY Choose a day to program first. Monday is used in the examples. Start by pro- gramming the MORNING time and temperatures. The thermostat requires a MOR NING program every day.
21 68-0058—1 T8621A,C,D PROGRAMMING THE THERMOSTAT Program the EVENING time and tem- perature, if desired. Program the NIGHT time and tempera- ture, if desired. Set the cooling temperatures for all the periods programmed.The program times are the same for both heating and cool- ing.
22 T8621A,C,D PROGRAMMING THE THERMOSTAT Press and release. The display shows the preprogrammed cooling tempera- ture a nd the programmed start time for MORNING. Press and hold until the display shows the desired cooling temperature for MORNING. Press and release.
23 68-0058—1 T8621A,C,D PROGRAMMING THE THERMOSTAT NOTE: The display will show 32 ° F instead of the current temperature until the thermostat is mounted on the subbase and the system is pow- ered.
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25 68-0058—1 T8621A,C,D PROGRAMMING THE THERMOSTAT • OPERATING THE THERMOSTAT Operating the Thermostat TEMPORARILY CHANGING THE PROGRAM These features allow customizing the program for those times when someone comes home early, is working late or planning to be out for the evening.
26 T8621A,C,D OPERATING THE THERMOSTAT Press and hold the Time or Temperature keys until the display shows the desired new program. Press and release. The next day will flash on the display. Press COPY TO to copy into, or DAY to bypass, the day. Continue until the program has been copied into all desired days.
27 68-0058—1 T8621A,C,D OPERATING THE THERMOSTAT CHECKING THE PROGRAM TIMES AND TEMPERATURES If desired, check all the stored set- tings without affecting the perma- nent program. CHECKING THE CURRENT TEMPERATURE SETTING Press a single key to compare actual room temperature to the setting at any time.
28 T8621A,C,D OPERATION ADAPTIVE INTELLIGENT RECOVERY™ OPERATION Adaptive Intelligent Recovery™ is the Honeywell trade- mark for the way the T8621 controls the heating and cooling equipment during recovery from an energy sav- ings setting to a comfort setting.
29 68-0058—1 T8621A,C,D TROUBLESHOOTING AUTOMATIC THERMOSTAT HEATING OR COOLING TEMPERATURE CAN NOT BE SET CLOSER THAN 3 F O THERMOSTAT MOUNTED INCORRECTLY ON BASE BATTERIES ARE INCORRECTLY INSTALLED SYMPTOM POSSIBLE CAUSE ACTION NO ac POWER TO THERMOSTAT CHECK POWER TO FURNACE OR AIR CONDITIONER.
30 T8621A,C,D GLOSSARY Glossary Comfort temperature The temperature desired when active and occupying the building. Energy-saving temperature The lower (heating) or higher (cooling) temperature that allows savings on heating and cooling costs when asleep or away.
31 68-0058—1 T8621A,C,D TABLE OF CONTENTS T able of Contents page Specifications ................................................................................................................. ..................................................... 2 Ordering Information .
32 Home and Building Control Home and Building Control Honeywell Inc. Honeywell Limited—Honeywell Limitée 1985 Douglas Drive North 740 Ellesmere Road Golden Valley, MN 55422 Scarborough, Ontario M1P 2V9 Printed in U.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Honeywell CHRONOTHERM T8621A è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Honeywell CHRONOTHERM T8621A - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Honeywell CHRONOTHERM T8621A imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Honeywell CHRONOTHERM T8621A ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Honeywell CHRONOTHERM T8621A, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Honeywell CHRONOTHERM T8621A.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Honeywell CHRONOTHERM T8621A. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Honeywell CHRONOTHERM T8621A insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
