RTH6300B Programmable Thermostat Table of contents G G e e t t t t i i n n g g s s t t a a r r t t e e d d S S y y s s t t e e m m s s e e t t u u p p Installation tips........2...
Installation Guide Installation is easy — even if you’ve never done it before! Your new thermostat has been designed for fast, easy installation. Just follow the simple, step-by-step instructions in the following pages. Install in three simple steps • Label wires and remove your old thermostat (see pages 5-8). •...
RTH6300B Programmable Thermostat Pre-installation checklist Check to make sure your package includes the following items: Wall anchors and mounting screws (2 each) Quick RTH6300B thermostat Operating manual reference (wallplate attached to back) card Caution card Wire labels...
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Installation Guide Pre-installation checklist Required tools & supplies • No. 2 Phillips screwdriver • Small pocket screwdriver • Drill • Drill bit (3/16” for drywall, 7/32” for plaster) • Hammer • Pencil • Electrical tape • Level (optional) • Two fresh AA alkaline batteries...
RTH6300B Programmable Thermostat Remove your old thermostat 1 T T u u r r n n o o f f f f p p o o w w e e r r at heating/cooling system (or fuse/circuit-breaker panel). 2 Remove cover and thermostat, but leave wallplate with wires attached.
Installation Guide Did you purchase right thermostat? Count wires to check. Count the number of wires coming out of the wall and attached to terminals in your old thermostat. If any of them are attached to a terminal marked “C” or “C1” do not count that wire in your total.
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RTH6300B Programmable Thermostat Identify wires you will not use If any wires are not attached to terminals in your old thermostat, do not connect them to your new thermostat. If a wire is attached to a terminal marked “C C ” or “C C 1 1 ,” disconnect it.You will not connect it to your new thermostat.
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Installation Guide Label wires and remove old wallplate Use a screwdriver to disconnect wires one by one.As you disconnect each wire, wrap it with the label matching the letter on your old thermostat. (Adhesive labels are supplied in your thermostat package.) Remove the old wallplate only after all wires are labeled.
RTH6300B Programmable Thermostat Remove wallplate and install quick reference card Insert finger into wire hole and pull to Insert quick reference card into slot in remove wallplate from new thermostat. back of thermostat. Wallplate Thermostat...
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Installation Guide Mark wallplate mounting position 1 Pull wires through wallplate 2 Level wallplate if desired 3 Mark positions of (lay level across tabs) both screw holes...
RTH6300B Programmable Thermostat Mount wallplate 1 Drill holes at pencil-marked locations 3/16” holes for drywall 7/32” holes for plaster 2 Use hammer to tap anchors into holes until flush with wall 3 Place wallplate over anchors and insert screws. Check level...
Installation Guide Connect wires (typical installation) 1 Match each labeled wire Remove metal jumper if you with same letter on terminal have both “R” and “Rc” wires 2 Use a screwdriver to loosen screw terminals, insert wires, then tighten screws 3 Push any excess wire back into the wall opening.
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RTH6300B Programmable Thermostat Connect wires (less common wire designations) If labels do not match letters on the thermo- stat, check the chart at right and connect to terminal as shown here (see notes, below). If wires will be connected to both R and Rc terminals, remove metal jumper (see page 12).
Installation Guide Install batteries Install two fresh AA alkaline batteries in back of thermostat. After installation, batteries can be changed without removing the ther- mostat from the wall (see Operating Manual for more information). Back of thermostat...
RTH6300B Programmable Thermostat Mount thermostat and restore electrical power 1 Align the 4 tabs on the wallplate Wallplate with corresponding slots on the back of the thermostat, then push gently until the thermostat snaps into place. 2 Restore electrical power at the...
Installation Guide System setup (set thermostat to match your system) Next, you must set the thermostat to control the heating and cooling system in your home. Press and hold the buttons to enter system setup. F F A A N N Function Setting number...
RTH6300B Programmable Thermostat Function 1: System type Press the button to select the type of climate control system you have in your home: Heating & cooling: Gas, oil or electric heating with central air conditioning. Done Next Heat pump: Outside compressor provides both heating and cooling.
Installation Guide Function 2: Heat pump changeover valve Press the button to select whether your changeover valve is used in heating or cooling: Cooling changeover valve: Use this setting if you connected a wire labeled “O” to the O/B W wire terminal (see page 13).
RTH6300B Programmable Thermostat Function 3: Heating fan control Press the button to select your heat- ing system and fan operation: Gas or oil heat: Use this setting if you have a gas or oil heating system (system controls fan operation).
Installation Guide Function 5: Heating cycle rate Press the button to select your heat- ing system and optimize its operation: Gas or oil furnace: Use this setting if you have a standard gas or oil furnace that is less than 90% efficient.
RTH6300B Programmable Thermostat Function 14: Temperature display Press the button to select Fahrenheit or Celsius temperature display: Fahrenheit temperature display (°F) Celsius temperature display (°C) Done Next Press to change setting. When correct setting is selected, press D D O O N N E E...
Installation Guide In case of difficulty If you have difficulty with your thermostat, please try the suggestions below. Most problems can be corrected quickly and easily. Display is blank • Make sure fresh AA alkaline batteries are properly installed (see page 14). Temperature Make sure heating and cooling temperatures are set to acceptable ranges: settings do not...
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RTH6300B Programmable Thermostat In case of difficulty Heating or • Press S S Y Y S S T T E E M M button to set system to Heat. Make sure the temperature cooling system is set higher than the Inside temperature.
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Installation Guide In case of difficulty Heat pump • Check Function 2: Heat Pump Changeover Valve to make sure it is issues cool air properly configured for your system (see page 18). in heat mode, or warm air in cool mode Heating and •...
Installation Guide Limited 1-year 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. If at any time during the warranty period the product is determined to be defective or malfunctions, Honeywell shall repair or replace it (at Honeywell's option).
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Limited 1-year warranty This warranty does not cover removal or reinstallation costs.This warranty shall not apply if it is shown by Honeywell that the defect or malfunction was caused by damage which occurred while the product was in the possession of a consumer.
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This warranty gives you specific legal rights, and you may have other rights which vary from state to state. If you have any questions concerning this warranty, please write Honeywell Customer Relations, 1985 Douglas Dr, Golden Valley, MN 55422 or call 1-800-468- 1502.