Honeywell Thermostat R7848 User's Manual
Contents
1. 0149 Dynamic Ampli 2 3 Gas oil Ultraviolet Purple C7012A C Check amp coal Peeper Dynamic Self R7847C f i 2 3 Gas oil Ultraviolet Purple C7012E F Check coal Peeper Infrared Red No R7848A 2 3 Gas oil Infrared Lead C7015 coal Sulfide Dynamic Ampli R7848B 3 Gas oil Infrared Lead C7015 Check amp coal Sulfide Ultraviolet Purple No R7849A 0 8 1 or Gas oil Ultraviolet C7027 C7035 C70449 2 3 Minipeeper Dynamic Ampli R7849B4 0 8 1 or Gas oil Ultraviolet C7027 C7035 C70449 Check amp 2 3 Minipeeper Dynamic Self R7g61Acf 0 8 1 or Gas oil Ultraviolet C7061 Check 2 3 coal Blue Dynamic Self R7886A f 2 3 Gas oil Ultraviolet Adjustable C7076 Check coal Sensitivity Optical White Dymanic Ampli R7851B 0 8 1 or 2 3 Gas oil Optical UV IR C7927 C7935 C7915 Check coal Visible Light C7962 Dynamic Self R7851c 2 3 Gas oil Optical UV only C7961 Check coal Flame Failure Response Time FFRT depends on selection of amplifier and 7800 SERIES Relay Module 0 R7824C is used only with the 24 Vdc RM7824 Relay Module and C7024E F Flame Detectors Circuitry tests all electronic components in flame detection system amplifier and detector 12 times a minute during burner operation and shuts down burner if detection system fails d Use only Honeywell part no 38316 Photocell Circuitry tests flame signal amplifier 12 times a minute during burner operati2. R7851C Pending Underwriters Laboratories Inc Component Recognized File no MP268 Guide no MCCZZ R7824C Canadian Standards Association Certified LR95329 3 R7851C Pending ORDERING INFORMATION Factory Mutual Approved Report J 1 1V9A0 AF R7851C Pending Industrial Risk Insurers Acceptable Table 1 Relay Module Flame Failure Response Time FFRT Flame Failure Response Time FFRT in seconds Relay Module 0 8 or 1 2 0 or 3 0 EC7810 EC7820 EC RM7830 1 0 2 0 EC RM7850 EC RM7823 EC RM7885 EC 0 8 3 0 RM7890 EC RM7895 RM7896 RM7888 RM7838 RM7800 RM7840 RM7824 N A 3 0 Honeywell FLAME AMPLIFIER 3 76 76 3 8 9 E 3 9 16 91 si M11460 Fig 1 Flame amplifier dimensions in in mm NOTE NOTE EN298 Approved When these amplifiers are used with an EC7810 EC7820 EC RM7830 or EC RM7850 Relay Module Accessories Flame Simulators Rectification 1235144 Ultraviolet 203659 Flame Detectors ordered separately select from Table 2 When purchasing replacement and modernization products from your TRADELINE wholesaler or distributor refer to the TRADELINE Catalog or price sheets for complete ordering number If you have additional questions need further information or would like to comment on our products or services please write or phone 1 Your local Home and Building Control Sales Office c
3. a There is enough ground area b The flame rod is properly located in the flame c Temperature at the flame rod insulator is no greater than 500jF 260jC 4 For all optical detectors clean the detector viewing win dow lens and inside of the sight pipe as applicable 5 10 With the burner running check the temperature at the detector If it exceeds the detector maximum rated temperature a Add a heat block to stop conducted heat traveling up the sight pipe b Adda shield or screen to reflect radiated heat c Add cooling refer to sight pipe ventilation in the detector Instructions Make sure that the flame adjustment is not too lean Make sure the optical detector is properly sighting the flame If necessary resight or reposition the detector If you cannot obtain proper operation replace the plug in amplifier If you cannot yet obtain proper operation replace the flame detector IMPORTANT If you make any changes to the flame detection system repeat all required Checkout tests in Checkout section of the Instructions for the applicable 7800 SERIES Relay Module 65 0109 8 Honeywell Automation and Control Solutions Honeywell 1985 Douglas Drive North Golden Valley MN 55422 Honeywell Limited Honeywell Limit e 35 Dynamic Drive Scarborough Ontario MIV 4Z9 65 0109 8 Rev 01 02 Honeywell International Honeywell Europe S A Control Products 3 Avenue du Bourget H
4. ohmmeter This minimum or stronger signal can be easily obtained if the detector is correctly installed and positioned to properly sense the flame Obtain this voltage before completing checkout gt The flame amplifiers are Ampli Check type Adjust slightly or face the pipe down or extend the sight pipe on C7012A C E F applications to obtain a maximum flame signal reading less than 5 0 volts d The flame signal amplifier circuitry is tested one half second every five seconds during burner operation and shuts down the burner if the amplifier fails all installations e R7824C Series 2 or greater and R7847C Series 4 or greater pulse the shutter when the flame signal reaches 1 5 Vdc The flame signal for the pilot alone the main burner flame alone and both together must be steady and a minimum of 1 25V If the flame signal is unsteady or less than the minimum acceptable voltage check the flame detector installation and circuitry in the following procedure 1 Check the supply voltages at terminals L1 and L2 N Make sure the master switch is closed connections are correct and the power supply is of the correct voltage and frequency and is sinusoidal 2 Check the detector wiring for defects including a Incorrect connections b Wrong type of wire c Deteriorated wire d Open circuits e Short circuits f Leakage paths caused by moisture soot or accu mulated dirt 3 Fora flame rod make sure
5. Honeywell R7824 R7847 R7848 R7849 R7851 R7861 R7886 Amplifiers for 1800 SERIES Relay Modules APPLICATION The R7824C Rectification Flame Amplifier is a solid state plug in amplifier that responds to a rectified signal from a C7024E F Self Check Ultraviolet Flame Detector to indicate the presence of flame when used with an RM7824 Relay Module The R7847A B Rectification Flame Amplifiers are solid state plug in amplifiers that respond to a rectified signal from a rectification type flame detector to indicate the presence of flame when used with 7800 SERIES Relay Modules The R7847C Self Check Rectification Flame Amplifier is a solid state plug in amplifier that responds to a rectified signal from a C7012E F Self Check Ultraviolet Flame Detector to indicate the presence of flame when used with 7800 SERIES Relay Modules This is not European Community CE approved for EC7810 EC7820 EC RM7830 or EC RM7850 Relay Modules The R7848A B Infrared Flame Amplifiers are solid state plug in amplifiers that respond to an infrared signal from a C7015 Infrared Flame Detector to indicate the presence of flame when used with 7800 SERIES Relay Modules The R7849A B Ultraviolet Flame Amplifiers are solid state plug in amplifiers that respond to an ultraviolet signal from a C7027 C7035 or C7044 Ultraviolet Flame Detector to indicate the presence of flame when used with 7800 SERIES Relay Modules The R7851B Optical Flame Amplifiers ar
6. Remove the 7800 SERIES Relay Module from the wiring subbase 2 Refer to Fig 3 for proper flame detector wiring R7824 R7847 R7848 R7849 R7851 R7861 R7886 AMPLIFIERS FOR 7800 SERIES RELAY MODULES PHOTOCELL FLAME ROD C7076A D ULTRAVIOLET DETECTOR HF u an i EARTH 3 CO GROUND INFRARED C7015 25 1 F _WHITE C7076D TERMINAL BLOCK BROWN ULTRAVIOLET C7027 C7035 C7044 p BLUE A WHITE L2 COMMON OPTICAL C7927A BLUE SOLID STATE SELF CHECKING ULTRAVIOLET C7012E F G SOLID STATE ULTRAVIOLET C7012A C C7961 EA 22 WHITE pr L L2 WHITE L1 BLACK A F L2 BLACK SOLID STATE SELF CHECKING SOLID STATE SELF CHECKING ULTRAVIOLET C7024E F E SHOWN ULTRAVIOLET C7061A WHITE 22 1 N WHITE ig A A CAUTION EQUIPMENT DAMAGE HAZARD INCORRECT WIRING POLARITY CAN DAMAGE OR DESTROY UV SENSING TUBES CONNECT FLAME DETECTOR WIRES ACCORDING TO FOOTNOTES 1 AND 2 TO PREVENT UV SENSING TUBE DAMAGE FLAME DETECTOR LEADS ARE COLOR CODED THE BLUE LEAD MUST BE CONNECTED TO THE F TERMINAL AND THE WHITE MUST BE CONNECTED TO THE G TERMINAL THE UV SENSING TUBE IS POLARITY SENSITIVE A FLAME DETECTOR LEADS ARE COLOR CODED THE BLUE LEAD MUST BE CONNECTED TO THE F TERMINAL AND THE YELLOW MUST BE CONNECTED TO THE G TERMINAL THE UV SENSING TUBE IS POLARITY SENSITIVE A A CAUTION EQUIPMENT DAMAGE HAZARD INCORRECT VOLTAGE CAN DAMAGE SHUTTER MECHANISM ONLY ON EC7800
7. SERIES RELAY MODULES INSTALL A 200 220 240 VAC TO 120 VAC 10VA MINIMUM STEPDOWN TRANSFORMER NOT PROVIDED TO DRIVE THE SHUTTER MECHANISM A DO NOT USE 0 8 1 SECOND FFRT AMPLIFIER WITH C7012A C FLAME DETECTOR A GND GREEN LEAD WIRE ON C7961E ONLY M20309 Fig 3 Flame detector wiring 5 65 0109 8 R7824 R7847 R7848 R7849 R7851 R7861 R7886 AMPLIFIERS FOR 7800 SERIES RELAY MODULES 3 Disconnect power supply before making wiring connections to prevent electrical shock and equipment damage 4 All wiring must comply with appropriate electrical codes ordinances and regulations including NEC Class 1 Line Voltage wiring where required 5 Use recommended wire size and type no 18 copper conductors TTW 60C or THW 75C or THNN 90C 6 Use recommended wire routing a Keep the flame signal leadwire as short as possible from the detector to the 7800 SERIES Relay Module The maximum permissible leadwire length depends on the type of leadwire conduit type and leadwire diameter The ultimate limiting factor for flame signal leadwire length is the flame signal voltage b Donotrun high voltage ignition transformer wires in the same conduit with the flame detection wiring c Ifthe flame detector leadwires are not long enough to reach the 7800 SERIES Relay Module electrical connectors make splices in a junction box 1 Enclose scanner wiring without armor cable in metal cable or conduit 2 Follow flame detector Instructi
8. ading range Color coded label identifies flame detection type Green rectification Red infrared Purple ultraviolet Blue pulsed rectification White optical R7847B R7848B R7849B Dynamic Ampli Check circuitry tests all flame amplifier components 12 times per minute The 7800 SERIES Relay Module locks out on safety shutdown with amplifier failure R7824C and R7847C Dynamic Self Check Rectification Amplifier R7851C Dynamic Self Check Optical Flame Amplifier R7861 Self Check Ultraviolet Flame Amplifier and R7886A Dynamic Self Check Ultraviolet Amplifier test the detectors and all electronic components in the flame detection system 12 times per minute The 7800 SERIES Relay Module locks out on safety shutdown with flame detection system failure NOTE NOTE R7824C Series 2 or greater and R7847C Series 4 or greater pulse shutter when signal of 1 5 Vac is sensed Contents Application raters onenei re a ien 1 Features RH 1 Specifications rri 2 Ordering Information ss 2 Installation 5 2 22er ei ih E er ERE 4 PEERS 6 65 0109 8 R7824 R7847 R7848 R7849 R7851 R7861 R7886 AMPLIFIERS FOR 7800 SERIES RELAY MODULES SPECIFICATIONS Models Flame Detection Systems see Table 2 Rectification R7824C for use with C7024E F Solid State Ultraviolet Detectors R7847A for use with flame rods rectifying photocells o
9. e This applies only to the initial power of the RM7890 INSTALLATION Ren Installing this Product Read these instructions carefully Failure to follow them could damage the product or cause a hazardous condition 2 Check the ratings given in the instructions and on the product to make sure the product is suitable for your application 3 Installer must be a trained experienced flame safeguard control technician 4 After installation is complete check out the product operation as provided in these instructions A WARNING Electric Shock Hazard Can cause electrical shock serious injury or death Disconnect the power supply before beginning installation More than one power supply disconnection can be involved IMPORTANT 1 Wiring must comply with all applicable codes ordinances and regulations 2 Wiring where required must comply with NEC Class 1 Line Voltage wiring 3 Perform all required checkout tests after installation is complete N CAUTION Equipment Damage Hazard Can cause equipment damage Disconnect 7800 SERIES Relay Module power before removing amplifier Installing Plug In Flame Signal Amplifier Fig 2 A WARNING Electric Shock Hazard Can cause electrical shock serious injury or death Disconnect the power supply before beginning installation More than one power supply disconnection can be involved 65 0109 8 4 1 Align the amplifier circuit board edge connector with t
10. e solid state plug in amplifiers that respond to optical signals from C7927 C7935 C7915 and C7962 Flame Detectors to indicate the presence of flame when used with 7800 SERIES Relay Modules U S Registered Trademark Copyright 2002 Honeywell All Rights Reserved PRODUCT DATA The R7851C Dynamic Self Check Optical Flame Amplifier is a solid state plug in amplifier that responds to ultraviolet signals from C7961E Dynamic Shutter Check ultraviolet flame detectors to indicate the presence of flame when used with 7800 SERIES Relay Modules The R7861A Self Check Ultraviolet Flame Amplifier is a solid state plug in amplifier that responds to an ultraviolet signal from a C7061 Self Check Ultraviolet Flame Detector to indicate the presence of flame when used with 7800 SERIES Relay Modules The R7886A Dynamic Self Check Ultraviolet Amplifier is a solid state plug in amplifier that responds to a pulsed direct current signal from a C7076A C Ultraviolet Flame Detector with adjustable sensitivity to indicate the presence of flame when used with 7800 SERIES Relay Modules FEATURES Flame failure response time of 0 8 or 1 second or 2 0 or 3 0 seconds depending on the amplifier and relay module selected See Table 1 Plug in to 7800 SERIES Relay Module through printed circuit board edge connector keyed for proper orientation Flame signal test jacks measure amplifier flame signal voltage 0 0 to 5 0 Vdc Flame signal strength re
11. he keyed receptacle on the 7800 SERIES Relay Module Be sure the amplifier nameplate faces away from the Relay Module 2 Pushin the amplifier until the circuit board is fully inserted into the receptacle and then push the amplifier toward the 7800 SERIES Relay Module retaining clasp 3 Be sure the amplifier is firmly in place 4 Perform all required checkout tests Installing Flame Detector NOTE NOTE Table 2 lists flame detection systems available for use with 7800 SERIES Relay Modules Be sure to use the correct combination of amplifier and flame detector Proper flame detector installation is the basis of a safe and reliable flame safeguard installation Refer to the Instructions packed with the flame detector and the equipment manufac turer instructions Keep the flame signal leadwires as short as possible from the flame detector to the wiring subbase Capacitance increases with leadwire length reducing the signal strength The maximum permissible leadwire length depends on the type of flame detector leadwire and conduit However the ultimate limiting factor for the flame detector leadwire is the flame signal see Table 3 in the Checkout section Honeywe FUME AMPLIFIER Fig 2 Installing flame signal amplifier Wiring WARNING Electrical Shock Hazard Can cause electrical shock or equipment damage Disconnect power supply before beginning installation More than one disconnection can be involved 1
12. heck white pages of your phone directory 2 Home and Building Control Customer Relations Honeywell 1885 Douglas Drive North Minneapolis Minnesota 55422 4386 In Canada Honeywell Limited Honeywell Limit e 35 Dynamic Drive Scarborough Ontario M1V 429 International Sales and Service Offices in all principal cities of the world Manufacturing in Australia Canada Finland France Germany Japan Mexico Netherlands Spain Taiwan United Kingdom U S A 65 0109 8 2 R7824 R7847 R7848 R7849 R7851 R7861 R7886 AMPLIFIERS FOR 7800 SERIES RELAY MODULES Table 2 Flame Detection Systems Plug in Flame Signal Amplifiers Applicable Flame Detectors Flame Failure Response Type Color Self Checking Model Time sec Fuel Type Models Rectification Green Dymanic Self 824 2 3 Gas oil Ultraviolet Purple C7024E F Check coal Peeper No R7847A 0 8 1 or 2 3 Gas Rectifying Flame Rod C7004 C7007 C7011 Holders Complete Assemblies C7008 C7009 Q179 No R7847A 0 8 1 or Oil Rectifying Photocell 7003 C7010 C7013 2 3 C70142 No R7847Ah 23 Gas oil Ultraviolet Purple C7012A C coal Peeper Dynamic Ampli R7847p9 0 8 1 Gas Rectifying Flame Rod C7004 C7007 C7011 Check 2 3 Holders Complete Assemblies C7008 C7009 Q179 Dynamic Ampli R7847B n 0 8 1 or Oil Rectifying Photocell 7003 C7010 C7013 Check 2 3
13. on and shuts down burner if amplifier fails f 200 220 240 Vac applications require a 120 Vac 10 VA minimum stepdown transformer not provided to drive the shutter Applies to R7847C series 3 or greater R7886A series 2 or greater R7861 series 1 or greater Fig 2 shows flame detector wiring 9 Use C7027 C7035 and C7044 Flame Detectors only on burners that cycle on off at least once every twenty four hours Use C7012E F Flame Detector with R7847C Amplifier C7061A Ultraviolet Detector with R7861A Amplifier or C7076A Flame Detector with R7886A Amplifier as ultraviolet flame detection system for appliances with burners that remain on continuously for twenty four hours or longer h R7847A B Amplifiers with 0 8 1 second FFRT should not be used with C7012A C Solid State Ultraviolet Detectors i R7824C Series 2 and greater and R7847C Series 4 and greater check flame detector system when flame reaches 1 5 Vdc or at 4 5 seconds whichever occurs first 1 Order flame rod separately see flame detector Instructions for holder 3 65 0109 8 R7824 R7847 R7848 R7849 R7851 R7861 R7886 AMPLIFIERS FOR 7800 SERIES RELAY MODULES N CAUTION Equipment Damage Hazard Incorrect combination of relay module amplifier and flame detector can cause equipment damage In infrared applications C7015 Infrared Flame Detector and R7848 Amplifier using the RM7890 Relay Module with software version 4004 or less requires a ten second delay to start sequenc
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15. ons 7 Check wiring see Fig 4 8 Install 7800 SERIES Relay Module 9 Restore power to the 7800 SERIES Relay Module Flame detector wiring is shown in Fig 3 CHECKOUT Preliminary Inspection Make certain that 1 Wiring connections are correct and all terminal screws and electrical connections are tight Proper flame failure response time is selected Amplifier is securely mounted on the 7800 SERIES Relay Module Detectors are properly positioned and cleaned according to Detector Instructions Correct combination of amplifier and flame detector is used go Flame Signal Measurement Fig 4 Flame signal can be measured at the Flame Signal Test Jacks see Fig 4 and at the Keyboard Display Module Measure the flame signal at the appropriate times defined in the Checkout section see applicable 7800 SERIES Relay Module Instructions See Table 3 for acceptable and maximum flame signal voltage strengths 65 0109 8 6 N CAUTION Equipment Damage Hazard Improper wiring can destroy ultraviolet sensing tube Carefully follow polarity sensitive wiring instructions for the C7027 C7035 C7044 C7012 C7024 C7061 C7961 and C7076 Reversing the leadwires even momentarily can destroy the ultraviolet sensing tube POSITIVE METER LEAD NEGATIVE METER LEAD MEGOHM VOLT EN METER FLAME SIMULATOR TEST JACK M11459A Fig 4 Flame signal measurement with meter 1 Connec
16. r C7012A C Solid State Ultraviolet Detectors R7847B for use with flame rods rectifying photocells or C7012A C Solid State Ultraviolet Detectors R7847C for use with C7012E F Solid State Ultraviolet Detectors Infrared R7848A for use with C7015 Infrared lead sulfide Detector R7848B for use with C7015 Infrared lead sulfide Detector Ultraviolet R7849A for use with C7027 C7035 C7044 Minipeeper Ultravi olet Detectors R7849B for use with C7027 C7035 C7044 Minipeeper Ultravi olet Detectors R7861A for use with C7061A Ultraviolet Detector R7886A for use with C7076A D Ultraviolet Detectors with adjustable sensitivity Optical R7851B for use with C7927 C7935 C7915 and C7962 Flame Detectors R7851C for use with C7961E Flame Detectors Flame Failure Response Time See Table 1 Flame Signal Volts dc Minimum Acceptable 1 25 Vdc Flame Signal Voltage Range displayed on Keyboard Display Module or measured with a 1M ohm volt meter plugged into amplifier test jacks 0 0 to 5 0 Vdc Environmental Ratings Ambient Temperature Operating 40 F to 140 F 40 C to 60 C Storage 40 F to 150 F 40 C to 65 C Humidity Operating 85 rh continuous noncondensing Vibration Continuous 0 5G environment Weight 2 5 oz 71g unpacked Dimensions See Fig 1 Approvals Underwriters Laboratories Inc Listed File no MP268 Guide no MCCZZ R7847A R7847B R7847C R7861A R7886A R7848A R7848B R7849A R7849B R7851B
17. t blue leadwire from detector to terminal F and white leadwire from C7027 C7035 C7044 C7061 to terminal G 2 Connect blue leadwire from detector to terminal F and yellow leadwire from C7012 C7024 C7961 to terminal G 3 Follow lightoff Instructions for applicable 7800 SERIES Relay Module Measuring Flame Signal With Keyboard Display Module Consult Instructions for applicable 7800 SERIES Relay Module or Keyboard Display Module Measuring Flame Signal with a Volt Ohmmeter Two test jacks positive and negative Com are accessible on the top of the amplifier when plugged into the 7800 SERIES Relay Module These jacks are provided for monitoring flame signal strength Use a one megohm volt meter to measure the flame signal strength Connect the positive meter lead red to the positive amplifier test jack and the negative meter lead black to the negative amplifier test jack The test jacks use standard 0 180 inch diameter voltmeter probes A minimum 1 25 Vdc flame signal is required Table 3 Flame signal Flame Detector Flame Signal Amplifier Flame Rod Photocell R7847A BP C7012A C C7012E F R7847C C7015A R7848A B C7024E F R7824C4 C7027A R7849A B gt C7035A C7044A C7927 R7851B C7935 C7915 C7962 C7061A R7861A C7961E R7851C4 Minimum Acceptable Steady dc Voltage 1 25 Vdc Maximum Expected dc Voltage 5 0 Vdc at Keyboard Display Module or on volt
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