Honeywell Thermostat RTH230B User's Manual
Contents
1. Secure the thermostat using the locking screw and install the faceplate Apply power back to the system 3 Basic Functions 3 1 System Operating Mode Use the selector switch to place the system in Heating mode HEAT or Cooling mode COOL or to set the system off Note When you place the thermostat in Cooling mode you might need to wait up to five minutes before cooling can start This is a safety feature for the compressor amp will flash on the screen until cooling can start again 69 1800 01 11 09 2 4 3 2 Fan Operating Mode Use the selector switch to set the fan to automatic AN mode AUTO or continuous mode ON Auto On S i Note This switch is not used if you have a 2 wire Fan installation as the fan is not connected to the thermo stat If you have an electric furnace see section 2 4 the fan works only when heating or cooling is activated If you have a gas or fuel oil furnace see section 2 4 the fan works as follows e When the thermostat is placed in cool mode the fan works only when cooling is activated When the thermostat is placed in heat mode the fan is controlled by the furnace fan control circuitry AUTO ON The fan is always on 3 3 Displaying the Temperature The actual temperature is normally displayed To view the setpoint press once on one of the o buttons The setpoint is displayed for 5 seconds along with the icon2. Note Pressing either of the buttons more than once will change the setpoint 3 4 Setting the Temperature Press one of the o buttons until the desired temperature is dis played 3 5 Thermostat Control Mode 3 5 1 Manual Permanent Hold Mode Maintains the temperature at a fixed setpoint To place the thermo stat in this mode press Mode The house icon will disappear 3 5 2 Programmable Mode Maintains the temperature according to the energy saving sched ule To place the thermostat in this mode press Mode The cur rent period will be displayed The four possible periods are ih To Tae rota fy Wake up Return home Sleep To see the default settings of each period see section 5 2 Leave for work Temporary Bypass If you modify the temperature using the buttons when the thermostat is in programmable mode the new temperature will be used for the next 2 hours The house icon flashes during the bypass At the end of the bypass period the thermostat returns to the temperature settings of the period currently underway 3 6 Filter Replacement Indicator After 500 hours of operation an icon appears to indi cate that the filter needs replacement Once the filter is replaced press Filter for 3 seconds to remove the icon and reset the counter RTH230B 3 7 Battery Replacement Indicator An icon appears when the batteries need replacement This icon will flash for 120 days then the thermostat will c
3. an electrical box it was probably powered by 120 240 volts In this case this thermo stat cannot be used 2 Identify and label each wire with the corresponding letter on the wire terminal and remove them from the terminals if necessary strip the end of each wire maximum of 1 4 inch RTH230B 4 Wrap the wires around a pencil to prevent them from falling into the wall Ifthe hole in the wall is too big insulate it using a non flammable material in order to avoid air draughts behind the thermostat 2 2 Installing the New Baseplate For a new installation choose a location approximately 5 feet 1 5 m above the floor and on an inside wall Avoid draughty areas top of staircase air outlet etc dead air spots behind doors direct sunlight or areas near concealed pipes or chim neys Remove the thermostat faceplate Loosen the locking screw to separate the thermostat from its baseplate the screw cannot be completely removed Tilt the thermostat upwards Mark and bore the appropriate mounting holes or use the existing holes Insert the plastic anchors Pass the wires through the opening of the baseplate and fix the baseplate to the wall using the screws provided 2 3 Connecting the Thermostat The connection of the new thermostat should be similar to that of the old thermostat however it can vary depending on the installa tion Rh Heating power supply Rc Cooli
4. 8 1502 In Canada write Retail Products ON15 02H Honeywell Lim ited Honeywell Limit e 35 Dynamic Drive Scarborough Ontario M1V4Z9 8 Customer Assistance If you have any questions about the operation of your thermostat please go to www honeywell com yourhome or call Honeywell Customer Care toll free at 1 800 468 1502 3 ENERGY STAR As an ENERGY STaR partner Honeywell has determined that this product meets the ENERGY STAR guidelines for energy efficiency 69 1800 01 11 09 4 4
5. 860 1885 Douglas Dr N Golden Valley MN 55422 or whether a replace ment product can be sent to you 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 Honeywell s sole responsibility shall be to repair or replace the product within the terms stated above HONEYWELL SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE OF ANY KIND INCLUDING ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING DIRECTLY OR INDI RECTLY FROM ANY BREACH OF ANY WARRANTY EXPRESS OR IMPLIED OR ANY OTHER FAILURE OF THIS PRODUCT Some states do not allow the exclusion or limitation of incidental or consequential damages so this limitation may not apply to you THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL MAKES ON THIS PRODUCT THE DURATION OF ANY IMPLIED WAR RANTIES INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE IS HEREBY LIMITED TO THE ONE YEAR DURATION OF THIS WARRANTY Some states do not allow limitations on how long an implied warranty lasts so the above limitation may not apply to you 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 46
6. J2 Jumper The jumper defines the fan operation when the fan is placed in auto matic mode Use this setting if you have an electric furnace In this setting when the fan is placed in automatic HE rate mode it works only when heating or cooling is activated J2 jumper Use this setting if you have a gas or fuel oil fur nace In this setting when the fan is placed in automatic mode it works as follows When the thermostat is placed in cool mode HG nee f the fan works only when cooling is activated When the thermostat is placed in heat mode the fan is controlled by the furnace fan control circuitry O 8 8 e o o o 0 Pull out the battery cover install the batteries as shown Observe the polarity Reinstall the battery cover You will hear a clicking sound After the batteries are installed the thermostat performs a series of tests for approximately 5 seconds Afterwards the screen displays the actual temperature It is normal that the displayed temperature be higher than the ambient temperature if you are holding the thermo stat The thermostat will display the ambient temperature once it is installed on the wall By default the setpoint is 70 F 21 C an iU 2 00 Mo 0 2 6 Completing the Installation Once the baseplate and the batteries are installed mount the thermostat on the baseplate
7. RTH230B Programmable Electronic Thermostat Installation and User Guide 1 Introduction The RTH230B programmable thermostat can be used to control Honeywell agas fuel oil or electric furnace 2 or 3 wires acentral air conditioner 2 or 3 wires a hot water system with or without pump 2 wires e a millivolt system 2 wires a central heating and cooling system 4 or 5 wires Note These thermostats are not compatible with heat pumps or multi stage systems Adjustment Display buttons Heat Off Cool Auto On Cik Filter Mode Fan P Day Clr y Exit Programming buttons System operating mode selector Fan operating mode selector Features e System operating mode selection heat cool or off e Fan operating mode selection automatic or on continuous e Programmable heating and cooling cycle lengths 10 12 15 20 or 30 minutes Temperature display in F or C e Battery replacement indicator e 5 2 programming including Preprogrammed energy saving schedule Early Start Temporary bypass Time display 12 h or 24 h e Filter replacement indicator 2 Installation 2 1 Removing the Old Thermostat IN ORDER TO AVOID ANY RISK OF ELECTRIC SHOCK CUT POWER TO THE HEATING SYSTEM Remove the old thermostat to access the wires Warning If the old thermostat was mounted onto
8. aving its own temperature settings The same program is repeated daily from Monday through Friday and another program is used for Saturday and Sunday For each period you can set the start time the heating setpoint and the cooling setpoint Press Pgm The settings for period 1 are displayed ant Program days T MOTUWE THFR l j Q Period number chr 4 Note During programming to skip a period press CLR while the period is displayed For example in the predefined energy sav ing schedule periods 2 and 3 have been skipped for Saturday and Sunday Period start time mn Temperature setting Select the program using the Day button MO TU WE TH FR appears when the Monday Friday program is selected or SA SU appears when the Saturday Sunday program is selected Press for 3 seconds to select all 7 days Set the time in increments of 15 minutes using the o but tons Press P The heating or cooling setpoint flashes depending on the position of the Heat Cool selector ZOON Heat Off Cool Set the desired temperature for the displayed period using the o buttons 1 Use the Heat Cool selector to switch to the other mode e g if you were in Heating mode switch to Cooling mode The set point for that mode flashes Set the desired temperature using the o buttons Press P to go to the next period Repeat steps 2 to 8 for each of the remaining perio
9. ds 6000 Press Exit to exit Note To use the schedule place the thermostat in programmable mode Printed in USA RTH230B 6 Technical Specifications Power supply 2 AA batteries Maximum load 1 A 24 Vca per output Setpoint range heating 41 to 82 F 5 to 28 C Setpoint range cooling 59 to 95 F 15 to 35 C Display range 23 to 122 F 5 to 50 C Storage temperature 2 to 122 F 20 to 50 C Temperature display resolution 1 F 0 5 C Accuracy 1 F 0 5 C Heating cooling cycle lengths 10 12 15 20 or 30 minutes programmable Compressor short cycle protection minimum off time 5 minutes Data memory non volatile Dimensions 5 in x 3 in x 1 in 127 mm x 75 mm x 28 mm 7 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 dur ing the warranty period the product is determined to be defective or malfunc tions Honeywell shall repair or replace it at Honeywell s option If the product is defective i return it with a bill of sale or other dated proof of purchase to the place from which you purchased it or ii call Honeywell Customer Care at 1 800 468 1502 Customer Care will make the determination whether the product should be returned to the following address Honeywell Return Goods Dock 4 MN10 3
10. g control use the setting that matches your system as follows 2 30 min steam gravity 3 20 min hot water 90 high effi ciency furnace 4 15 min gas or oil 5 12 min alternate setting for gas or oil 6 10 min electric 4 The corresponding cooling cycle lengths are as follows 2 30 min 3 20 min 4 15 min 5 12 min 6 10 min o Programming Pn Setting the Time and Day Press Clk The hour flashes Set the hour using 6 Press Clk The minutes flash Set the minutes using 6 Press Clk The day flashes Set the day using 60 o000000 Press Exit to exit 69 1800 01 11 09 3 4 5 2 Energy saving Schedule Your thermostat is preprogrammed with an energy saving schedule The schedule automatically controls your heating or cooling system by switching from one setpoint to the next according to the preset times F Monday Saturday Default schedule settings to Friday amp Sunday A Heating 70 F 21 C N 6 00 a m 6 00 a m Cooling 78 F 25 5 C Heating 62 F 16 5 C are 8 00 a m Cooling 85 F 29 5 C Heating 70 F 21 C hel at 6 00 p m Cooling 78 F 25 5 C P Heating 62 F 16 5 C N 10 00 p m 10 00 p m Cooling 82 F 28 C Note To use the schedule place the thermostat in programmable mode 5 3 Modifying the Schedule You can program up to 4 periods per day each period h
11. ng power supply Ww Heating signal Y Cooling signal G Fan Note The red jumper wire between the Rc and Rh terminals must be removed in 2 or 5 wire installations The jumper must be used in 3 or 4 wire installations if you wish to use the mode selector switch for the fan 69 1800 01 69 1800 01 11 09 1 4 2 3 1 2 wire Heating Rh Ro WY G OJO O O E9 by N 9 Li 3 f m Heat relay 2 3 2 2 wire Cooling Rh Ro WwW Y G OO Vs EHEN N N E E Cool relay 2 3 3 3 wire Heating Rh Rew Y G OO CS E H Heat relay 12 Fan relay 2 3 4 3 wire Cooling O VIC GY DY DAN De DY 3 Eis l 5 Cool relay Fan relay 2 3 5 4 wire Heating and Cooling Rh Ro W Y G OO Ey Tus Es Dy 11 I Heat relay 12 Cool relay Fan relay 2 3 6 5 wire Heating and Cooling Rh Ro W Y G OJO VY E pay py Fan relay Heat relay Cool relay g E 2 RTH230B E 2 4 Setting
12. ut power to the heating cooling unit The icon dis appears once the batteries are replaced After replacing the batteries readjust the time and day see section 5 1 However the temperature and program settings are saved and do not need to be re entered Warning Before removing the batteries place the system switch on the thermostat to Off Otherwise the heating cooling unit might still be running even after the batteries are removed a _ Heat_Off Cool CMD N f 4 Configuration Menu Toaccess the configuration menu press both buttons simultaneously for 3 seconds To go to the next parameter menu item briefly press both buttons simultaneously To modify a parameter press one of the o buttons 4 Repeat steps 2 and 3 if necessary Press both buttons simultaneously for 3 seconds to exit the configuration menu DISPLAY DESCRIPTION DEFAULT OPTIONS unit Temperature display F C or F He Time display 12h 12hor24h E5 Early Start 1 Off On or Off Heating cycles per hour 2 4 2 3 4 50r6 CPH amp Cooling cycles per hour 2 4 2 3 4 50r64 1 When Early Start is On the thermostat determines when to start heating or cooling so that the desired temperature is reached at the set time 2 When either the heating or cooling parameter is displayed use the sys tem mode selector switch to alternate between the two parameters 3 For optimal heatin
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