Instruction/ maintenance manual of the product 3355 Honeywell
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1 69-1012 OWNER’S GUIDE MagicStat ® /3355 Programmable Thermostat by Honeywell W eekday/Weekend (5-day/ 2-day) Programmable Heat and/or Cool Low V oltage (20 to 30 V ac) Thermostat and Mounting Pla.
2 69-1012 Welcome to the world of comfort and energy savings with your new Honeywell MagicStat® Programmable Thermostat. Y our new thermostat will automatically control the temperature in your home, keeping you comfortable while saving energy when pro- grammed according to the instructions in this manual.
3 69-1012 T able of Contents Step 1: Prepare For Installation ..................................................................................................... 4 Step 2: Remove Old Thermostat .......................................................
4 69-1012 Step 1: Prepare for Installation ■ ■ Check T able 1 to make sure this thermostat is compatible with your system. If not, return to the retailer . For more information, call Honeywell Customer Assistance, toll-free 1-800-468-1502. T able 1.
5 69-1012 ■ ■ Acquire tools and items below as needed. Also purchase two AA alkaline batteries; we recom- mend Energizer® batteries. M878B CROSS-RECESSED SCREWDRIVER HAND OR POWER DRILL WIT.
6 69-1012 Step 2: Remove Old Thermostat ■ ■ T est to make certain that your heating and cooling systems are working properly . If either does not work, contact your local heating/air conditioning dealer . T o avoid compressor damage, do not operate the cooling system when outdoor temperature is below 50 ° F (10 ° C).
7 69-1012 Replacing a Clock Thermostat that has C or C1 Clock T erminals? If you are replacing a Honeywell Chronotherm® Thermostat, you can find one or two wires that go to the C or C1 clock terminals on the Chronotherm® Thermostat wiring wallplate.
8 69-1012 Step 3: Install Batteries IMPORT ANT Batteries must be installed for programming and oper ation of the thermostat and heating/cooling system. ■ ■ Purchase two AA alkaline batteries; non- alkaline batteries do not last as long, and can leak, causing damage to the thermostat or the wall surface.
9 69-1012 indicator eventually stops flashing. bAt Lo stays on without flashing, indicating the thermostat and heating/cooling system have stopped working when the batteries are almost completely dead. After the batteries are completely dead, the bAt Lo indicator disappears, leaving a com- pletely blank display .
10 69-1012 Step 4: Program Thermostat After the batteries are installed, the thermostat can be easily programmed in your hand, before it is installed on the wall. If you prefer to program the thermostat after it is installed on the wall, skip to page 18, and return later to this programming section.
11 69-1012 to give the furnace a head start to heat the house before you arrive home. (Again, this is higher heating or lower for cooling.) SLEEP is the time period you can set for an energy-saving temperature while you are sleeping. (Again, this is lower for heating or higher for cooling.
12 69-1012 Personal Programming Chart Heating Pr ogram Weekdays Start Time Heating Temperature WAKE LEAVE RETURN SLEEP Weekends WAKE SLEEP W AKE and RETURN start times should include extra lead time based on outside temperature and furnace response time, to give your furnace a head start to heat the house.
13 69-1012 Weekdays Start Time Heating Temperature WAKE LEAVE RETURN SLEEP Weekends WAKE SLEEP Cooling Program W AKE and RETURN start times should include extra lead time based on outside temperature and furnace response time, to give your furnace a head start to heat the house.
14 69-1012 This guide can be used for programming your new thermostat. NOTE: Batteries are required for operation and programming. When inserting batteries, set system switch to OFF . Remove the battery door (on the thermostat left side) using a coin at the bottom.
15 69-1012 Press to program W AKE time and press to program WAKE temperature for Mon-Fri. Repeat sequence for LEA VE, RETURN, and SLEEP . Press until SA T SUN, WAKE and SET appear on the display . Press to program W AKE time and to program WAKE temperature for Sat-Sun.
16 69-1012 A quick guide for operating or making changes follows: NOTE: System switch must be set to Heat or Cool to perform the following. T emporarily Change temperature for current period only — press ; TEMPORAR Y indicator shows on display; canceling itself at the next scheduled change, or to cancel sooner press .
17 69-1012 Check Programs— press , repeatedly to view each time and temperature; then press . Cancel a program— press , until program to cancel shows; then press .
18 69-1012 Step 5: Adjust Fan Operation Switch, as Required ■ ■ The thermostat fan operation switch, labeled FUEL SWITCH (see illustration on page 20) is factory-set in the F position. This is the correct setting for most systems. If your system is an electric heat system, set the switch to E.
19 69-1012 First, turn in both screws completely , then adjust for system type: • W arm Air Furnace—Set at the Hot Water setting (A—out one turn, B—leave in). • Electric Furnace—Leave at the W arm Air Furnace setting (A—leave in, B—leave in).
20 69-1012 R Rc W Y G B D A C THERMOSTAT BACK M8796 DISPLAY ° F DISPLAY ° C C–IN C–OUT 1 TURN FOR HIGH EFFICIENCY FURNACE (90%+ AFUE) ADJUST: SCREW A–OUT ONE TURN SCREW B–IN.
21 69-1012 Step 7: Mount Thermostat Mounting Plate ■ ■ Position the mounting plate on the wall. Use a level to make sure the mounting plate is level. Use a pencil to mark the two mounting holes. ■ ■ Remove the mounting plate from the wall, and drill 3/16-inch holes in the wall (if drywall) as marked.
22 69-1012 ■ ■ Level for appearance only; thermostat functions properly even when not level. T ighten the mounting screws. LEVEL M1714A.
23 69-1012 Step 8: Wire Thermostat T erminals NOTE: All wiring must comply with local codes and ordinances. If unsure about household wiring procedures, call your local heating/air conditioning contractor . Refer to masking tape labels you placed on the wires when you removed your old thermostat.
24 69-1012 ■ ■ Loosen the terminal screws and slip each wire beneath its matching terminal. See illustration (lower right) for wire insertion technique. Securely tighten the terminals. ■ ■ Plug the hole in the wall with insulation to help prevent drafts from adversely affecting the thermostat operation.
25 69-1012 R Rc W Y G B D A C 2-WIRE HEAT-ONLY (JUMPER INTACT) M8793 L1 (HOT) L2 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 1 1 HEATING RELAY OR VALVE COIL JUMPER R Rc W Y G B D A C 4-WIRE HEAT/COOL (JUMPER INTACT) L1 (HOT) L2 POWER SUPPLY.
26 69-1012 R Rc W Y G B D A C 5-WIRE HEAT/COOL (JUMPER REMOVED) L1 (HOT) L2 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 1 M8795 L1 (HOT) L2 COOLING CONTACTOR COIL FAN RELAY HEATING RELAY OR VALVE COIL 1 1 R Rc W Y G B D A C 3-WIRE COOL-ONLY (JUMPER INTACT) L1 (HOT) L2 POWER SUPPLY.
27 69-1012 Step 9: Mount Thermostat NOTE: T o remove the thermostat from the wall, first pull out at the bottom of the thermostat, then remove the top. M1734A B. PRESS LOWER EDGE OF CASE TO LATCH. SWING OPEN COVER TO CHECK OPERATION. A. ENGAGE TABS AT TOP OF THERMOSTAT AND MOUNTING PLATE.
28 69-1012 Step 10: Check Thermostat Operation after Programming and Installing Heating Do not check heating system operation by jumpering thermostat terminals at the primary control such as the gas valve, zone valve, or oil burner control. This damages the thermostat, instead, jumper R and W wires at the thermostat.
29 69-1012 Cooling T o avoid possible compressor damage, do not operate the cooling system when outside temperature is below 50 ° F (10 ° C). See compres- sor manufacturer instructions for further information. NOTE: When cooling setting is changed, thermostat may delay up to five minutes before turning on the air conditioner .
30 69-1012 Step 1 1: Set Fan and System Switches First set the fan switch. F AN AUTO: Normal setting for most homes. A single-speed fan turns on automatically with the air conditioner or furnace. A two-speed fan usually runs on high with the air conditioner and on low with the furnace.
31 69-1012 Then set the system switch. COOL: The thermostat controls your air conditioning system. OFF: Both the heating and air conditioning systems are off.
32 69-1012 T roubleshooting Guide If … Then… Display will not come on. ■ Set the system switch to OFF. Remove batteries. Insert backward for at least five seconds to reset thermostat. Replace batteries correctly. Display should come on. ■ Make sure batteries are fresh and installed correctly.
33 69-1012 Heating will not come on. (Continued) ■ Jumper wires R and W. If heat does not come on, contact your heating dealer. ■ If display is blank or shows bAt Lo , install fresh batteries. ■ If temperature setting is higher than current temperature, and the display shows HEAT, contact Honeywell Customer Assistance at 1-800-468-1502.
34 69-1012 Cooling will not come on. (Continued) ■ If temperature setting is lower than the current temperature, and the display shows COOL, move the system switch from COOL to OFF for ten minutes. After ten minutes, return the switch to the COOL position.
35 69-1012 The furnace cycles too frequently or the system cycle length is too short or too long. ■ Readjust system on-time according to instructions on pages 18 and 19. The thermostat's current setting does not match the display temperature to within ± 1 ° .
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39 69-1012 Limited One-Y ear Warranty Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for a period of one (1) year from the date of purchase by the consumer .
40 69-1012 69-1012 6-96 J.S. Printed in U.S.A. Copyright © 1996 Honeywell Inc. All Rights Reserved ® U.S. Registered Trademark Helping You Control Your World Home and Building Control Honeywell Limited-Honeywell Limitée 155 Gordon Baker Road North York, Ontario M2H 2C9 Home and Building Control Honeywell Inc.
An important point after buying a device Honeywell 3355 (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 3355 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 3355 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell 3355 you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell 3355 will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell 3355, 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 3355.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell 3355. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell 3355 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
