Honeywell Q179A User's Manual
Contents
1. Orifice 0 028 in 0 711 mm diameter INSTALLATION When Installing this Product 1 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 product opera tion as provided in these instructions Follow instructions provided by burner manufacturer if available If no instructions are furnished use the following recommendations Mounting The Q179 has two mounting ears at the burner and two mounting holes in the bracket see Fig 2 If the mounting holes in the bracket are used it may be necessary to break off one of the mounting ears so that the bracket fits flush with the burner All models are supplied with a factory installed 1 4 inch compression coupling inlet fitting When a fitting is used remove the compression nut and install the new fitting 60 2032 05 Gas Pressure Regulation Use a pressure regulator in the line supplying the Q179 pilot Adjust the regulator for a maximum inlet gas pressure of eight inches water column The minimum inlet gas pressure must be two inches water column to assure reliable lightoff of the main flame Install the Q179A B Install the pilot assembly so the pi2. valve s can be opened perform a pilot turndown test Follow the procedures in the Instructions for the appropriate Flame Safeguard Control and in the burner manufacturer s instruction 60 2032 05 POSITIVE 2 METER LEAD J MEGOHM VOLT NEGATIVE METER METER Fig 5 Measuring 7800 SERIES Control flame signal voltage Q179A B GAS PILOT BURNER ASSEMBLIES 60 2032 05 Q179A B GAS PILOT BURNER ASSEMBLIES Automation and Control Solutions Honeywell International Inc 1985 Douglas Drive North Golden Valley MN 55422 Honeywell Limited Honeywell Limit e 35 Dynamic Drive Toronto Ontario M1V 4Z9 customer honeywell com U S Registered Trademark 2011 Honeywell International Inc 60 2032 05 JPG Rev 03 11 Printed in U S A Honeywell
3. Honeywell Q179A B Gas Pilot Burner Assemblies PRODUCT DATA GENERAL Q179A B Gas Pilot Burner Assemblies use the flame rectification principle to prove the flame Q179A B are used in conjunction with a suitable electronic flame safeguard control on industrial or commercial gas and gas pilot ignited oil burners FEATURES e Q179A is a gas pilot assembly with a flame electrode rod and ignition electrode making it suitable for applications requiring an interrupted or intermittent electrically ignited gas pilot burner e Q179A1183 is an I port burner with an ignition electrode spark only Q179B has only the flame electrode and is suitable for use in continuous pilot applications Primary aerated type burner is equipped with stainless steel fins that provide the proper flame rod area to ground area ratio for maximum flame signal and flame stabilization Stainless steel electrode s are mounted in ceramic insulators which permit electrode adjustment Contents GENArAll u 5460 Sent AAE E E A TAT 1 Feature S eooo ER R E E a EE E E 1 Ordering Information eeceesceseeeeeeeeseeeeeneesseeeeeeeeeeeeeaes 2 Specifications cre 2 Installation ce 4 GhE amp cKouf misa ds 5 60 2032 05 Q179A B GAS PILOT BURNER ASSEMBLIES SPECIFICATIONS Model Number Mounting Dimensions Q179A Gas pilot assembly with ignition and flame elec See Fig 2 trodes Use with intermittent or interrupted ignition Ignit
4. he pilot turn down test as described in the Honeywell Flame Safeguard Control instructions The proper pilot burner orifice must be selected for the gas being used natural LP gas so that the pilot burns with a medium hard flame This type of flame provides the maximum flame signal The flame safeguard control relay will chatter if excess secondary air velocity or a severe draft condition causes the pilot flame to make intermittent contact with the flame electrode rod or grounding bracket The performance of the pilot assembly can be determined by Q179A B GAS PILOT BURNER ASSEMBLIES measuring the flame signal developed with the pilot operating The flame signal current voltage measurement requires the use of an appropriate volt ohmmeter Most existing Honeywell Flame Safeguard Controls incorporate a flame current jack in the control plug in amplifier or in the control itself The flame current measurement can be made with a Honeywell W136A Test Meter which has a 0 to 25 microampere dc scale see Fig 4 With the W136A selector switch positioned to the 0 to 25 microampere scale connect the meter leads to the two ends of the meter connector plug positive red to positive negative black to negative The Meter Connector Plug part no 196146 is provided with the W136A Meter If a W136A Meter or connector plug is not available a dc ammeter with a 0 to 25 microampere scale can be wired in series with the F lead of the flame detect
5. ion electrode is for use with 6 000V grounded secondary igni Maximum Temperature tion transformer Q179A1183 has ignition electrode spark See Fig 3 only Q179B Gas pilot assembly with flame electrode rod only A Use with continuous pilot E 45 LEFT HAND ELL Burner Primary aerated Stainless steel fins provide proper flame con tact area to ground area Flame electrode and ground bracket are furnished with each tip Available tips are illus trated in Fig 1 and listed in Table 1 Mounting Means Bracket has holes for side mounting and two lugs for end mounting Type of Gas Natural for LP gas order LP orifice separately see Accessories Gas Consumption Approximately two cu ft hr Electrodes Stainless steel maximum temperature 1750 F 954 C Electrode Insulator s Ceramic Electrical Connector Rajah connector both male and female supplied Approvals Underwriters Laboratories Inc listed File No MP268 Industrial Risk Insurers acceptable CSA certified Master File No LR 95329 1 Factory Mutual approved American Gas Association certified No G140 401 DA NOTE THAT GROUND PRONG IS CUT OFF CLOSE TO BASE M5007 Fig 1 Pilot tip assembly styles ORDERING INFORMATION When purchasing replacement and modernization products from your TRADELINE wholesaler or distributor refer to the TRADELINE Catalog or price sheets for complete ordering
6. lot flame has full contact with the gas stream from the main burner heads or jets Mount the flame electrode just inside the junction of the main and pilot flame to prove both flames Mount the pilot so that it fires in the same direction as the draft at the mounting point rather than where the draft is at right angles to flame travel Keep the pilot burner below or behind the main burner so that the burner frame and refractory will help protect the pilot from radiant heat Locating the pilot in the secondary air stream will also provide considerable cooling The primary air adjustment must be accessible and outside the high temperature area Do Not install the Q179A B Where ambient temperatures exceed those specified in Fig 3 Where excessive draft turbulence can deflect the pilot flame away from the main burner or flame electrode Where the ignition electrode is within arcing distance of any metal other than the pilot burner head Where the flame electrode contacts any metal part of the installation Where the flame electrode is closer than one inch from a radiant refractory WIRING AX CAUTION Disconnect power supply to prevent electrical shock and equipment damage More than one disconnect may be involved Wiring must conform to local codes and ordinances Rajah connectors are furnished for making connections to the ignition and flame electrodes The ignition electrode A models only takes a receptacle co
7. nnector The flame electrode both A and B models takes a plug connector and has a snap action spring terminal Use high tension wire of a type found acceptable by a nationally recognized testing agency for the wiring to the ignition electrode Q179A High tension wires should be rated electrically equivalent to type GTO 10 and should have temperature and humidity characteristics adequate for the application If the ignition lead is exposed to temperatures above 125 F 52 C use Honeywell R1061012 Ignition Cable rated at 350 F 177 C or equivalent For ignition installations in a contaminated environment use Honeywell 32004766 003 High Tension Cable rated at 482 F 250 C or equivalent For wiring between the F terminal of the relay and the flame electrode use wire with moisture resistant insulation Number 14 single conductor TW wire is adequate however those portions of the lead wire exposed to temperatures over 125 F 52 C should also be heat resistant For both heat and moisture resistant applications use part no R1298020 Flame Rod Lead wire rated at 400 F 204 C continuous duty or equivalent Run a ground wire from the pilot burner to the relay to assure a continuous unchanging ground For detailed wiring diagrams see the Instructions packed with the flame safeguard control CHECKOUT N CAUTION Check to ensure the main valve opens only when the pilot flame is strong enough to ignite the main burner Perform t
8. 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 Honeywell Automation and Control Products Sales Office check white pages of your phone directory 2 Honeywell Customer Care 1885 Douglas Drive North Minneapolis Minnesota 55422 4386 In Canada Honeywell Limited Honeywell Limit e 35 Dynamic Drive Toronto 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 60 2032 05 2 Q179A B GAS PILOT BURNER ASSEMBLIES LOCATION OF OPTIONAL FLAME ELECTRODE A THERMOCOUPLE GROUND BRACKET IGNITION ELECTRODE ON Q179A ONLY MOUNTING ELECTRODE EARS INSULATORS FOR END CLAMP SCREW MOUNTING INSULATOR BRACKET T 7 32 6 7132 6 MOUNTING HOLES DA THIS DIMENSION WILL VARY DEPENDING 7 32 DIA ON THE FLAME ELECTRODE AND INLET FOR SIDE FITTING USED FORMATION OF THE MOUNTING FLAME ELECTRODE AND GROUND FINS WILL VARY WITH THE BURNER TIP USED 10 A GAP BETWEEN IGNITION ELECTRODE AND 1 3 16 30 BURNER TIP MUST BE 1 16 TO 3 32 INCH 1 11 16 43 1 29 32 48 A Q179A1183 DOES NOT HAVE FLAME ELECTRODE OR GROUND BRACKET M24193 Fig 2 Approximate mounting dimensions in inches mm and ar
9. or circuit A minimum flame current of 2 0 microamperes is considered acceptable The Honeywell 7800 SERIES Flame Safeguard Control flame signals are measured in dc volts A one megohm volt meter is recommended for 7800 SERIES controls The flame signal voltages are measured as illustrated in Fig 5 The minimum acceptable flame signal voltage for the 7800 SERIES controls is 1 25 Vdc maximum expected is 5 0 Vdc If the flame signal is less than the minimum acceptable for the Honeywell Flame Safeguard Control used adjust the flame electrode rod to increase the flame signal to at least the minimum acceptable level by loosening the clamp screw and turning the electrode rod slightly to the right or left as required After the flame electrode rod is adjusted check the gap between the ignition electrode and burner tip Q179A The gap must be between 1 16 and 3 32 inch Perform the pilot turndown test as described in the Flame Safeguard Control Instructions to ensure the pilot flame is adequate to ignite the main burner W136A VOLT OHMMETER W136A SELECTOR 196146 METER CONNECTOR FLAME SIGNAL METER JACK PLUG IN FLAME No SIGNAL AMPLIFIER RED aah METER Ee RED CONNECTOR LEAD EAD BLACK METER L BLACK CONNECTOR M6532A Fig 4 Measuring microamp flame signal 60 2032 05 Q179A B GAS PILOT BURNER ASSEMBLIES Pilot Turndown Test If the flame rod is used to prove a pilot flame before the main fuel
10. rangement of parts Inlet Fittings 1 4 inch compression coupling factory installed on all models GROUND Q179A p pling y SHIELD ELNE RUE 040 SK 2 Replacement Parts See Table 1 ELECTRODE 37356 Rajah Connector for ignition electrode 1750F 9540 Nil 104312 Rajah Connector for flame electrode Accessories Ssii r High temperature higher than 125 F 52 C cable BURNER TIP Flame Rod Lead wire part no R1298020 specify length lt INSULATOR 1500F 8160 1050F 566C rated at 400 F 204 C Ignition Lead wire part no R1061012 specify length rated at 350 F 177 C High Tension Cable part no 32004766 003 specify length IGNITION rated at 482 F 250 C ELECTRODE 1750F 954C PILOT ORIFICE 780F 416C FLAME h i f ELECTRODE CONNECTOR IGNITION 750F 399C CONNECTOR 750F 399C M7859 Fig 3 Component maximum temperature ratings Q179A1126 model shown 3 60 2032 05 Q179A B GAS PILOT BURNER ASSEMBLIES Table 1 Additional Q179A B Replacement Parts Orifice Flame Rod and Insulator Assembly Tip Style Tip Natural Gas LP Gas Assembly 395390 252 395390 13P 133448A 45 105064A 395390 252 45 RH 395390 258 45 LH 395390 258 T 395390 28 133451A 45 Y 395390 28 45 T 395390 28 Large 395390 252 133448A 4 Orifice 0 025 in 0 635 mm diameter b Orifice 0 0130 in 0 330 mm diameter order separately
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