Honeywell TRADELINE Q314 User's Manual
Contents
1. NOISY LIFTING BLOWING FLAME CHECK FOR HIGH GAS PRESSURE m HARD SHARP FLAME PILOTSTAT SAFETY CONTROL POWER UNIT FAILURE 1 Ensure pilot flame is properly adjusted 2 Ensure power unit connections clean and tight 3 If power unit still fails to hold in use the W129A Millivoltmeter to obtain the open and closed circuit voltage generated by the thermocouple or generator 4 Compare measured open and closed circuit voltage values to Acceptable Range Charts in W129A Manual 5 If W129A Millivoltmeter or other meter is not avail able replace thermocouple or thermopile If this does not correct the condition replace power unit THIS FLAME IS CHARACTERISTIC OF MANUFACTURED GAS CHECK FOR HIGH GAS PRESSURE ORIFICE TOO SMALL M3272 THERMOCOUPLE OR THERMOPILE PERFORMANCE Thermocouples and thermopiles require proper tempera ture differential between the hot junction tip and cold Junction base to provide satisfactory operation of gas con trols Thermocouples and thermopiles perform less effec tively when exposed to excessive cold junction or hot Junction temperatures Excessive cold junction temperatures can be caused by heat radiation from adjacent surfaces or high ambient air temperatures Excessive cold junction temperatures can be eliminated by shielding the pilot flame see Fig 10 or constructing a baffle to direct secondary air over the pilot burner base Excessive hot junction tempera2. E 1 If pilot flame goes out during normal operation but is properly adjusted recheck Mounting and Location instruc tions on page 1 2 If all mounting and location instructions are followed but pilot continues to go out construct shielding to protect pilot flame from main burner ignition and extinction and drafts See Fig 9 3 Check pilot flame characteristics e Check the pilot flame with the main burner operating Ensure the pilot flame continuously covers the tip of the thermocouple or thermopile the spark gap and 3 8 to 1 2 in 10 to 13 mm of the ground rod See Fig 8 Ensure the pilot flame is blue a yellow tipped flame is acceptable on LP systems soft and steady See Fig 9 for examples of possible pilot flame problems and their causes If pilot burner is damaged replace it with an identical pilot burner and mount and position in the same location and orientation Fig 9 Examples of unsatisfactory pilot flames CAUSE CHECK FOR LACK OF GAS FROM CLOGGED ORIFICE FILTER CLOGGED PILOT FILTER LOW GAS SUPPLY PRESSURE PILOT ADJUSTMENT AT MINIMUM APPEARANCE SMALL BLUE FLAME rau LAZY YELLOW FLAME CHECK FOR LACK OF AIR FROM LARGE ORIFICE DIRTY LINT SCREEN IF USED DIRTY PRIMARY AIR OPENING IF THERE IS ONE PILOT ADJUSTMENT AT MINIMUM WAVING BLUE FLAME CHECK FOR A EXCESSIVE DRAFT AT PILOT a LOCATION 7 RECIRCULATING PRODUCTS OF COMBUSTION lt
3. Honeywell TRADELINE Q314 and Q327A Pilot Burners Application Pilot burners provide main burner ignition for standing pilot natural and LP gas systems Used with a thermocouple to provide automatic pilot safety control Used with a thermopile in a self powered system See Table 1 for model specifications TABLE 1 MODEL SPECIFICATIONS Primary Type of Pilot Tip Model Aerated Orifice Type Includes Q314A No Insert Target Includes natural and LP gas orifices 1 4 in compression fitting F K or L tip styles B mounting bracket and A mounting bracket adapter Q327A Yes Spud Target Includes natural and LP gas orifices 1 4 in compression fitting and B mounting bracket with screws Installation WHEN INSTALLING THIS PRODUCT 1 Read these instructions carefully Failure to follow instructions can damage product or cause a hazardous condi tion 2 Check ratings given in instructions and on product to make sure product is suitable for your application 3 Make sure installer is a trained experienced service technician 4 After completing installation use these instructions to check out product operation A WARNING FIRE OR EXPLOSION HAZARD CAN CAUSE PROPERTY DAMAGE SEVERE INJURY OR DEATH Follow these warnings exactly 1 Disconnect power supply before wiring to pre vent electrical shock or equipment damage 2 To avoid dangerous accumulation of fuel
4. R MUST BE RIGIDLY POSITIONED ACE MAIN BURNER Mi269 J H Rev 12 92 Honeywell Inc 1992 Form Number 69 0519 3 Fig 2 Location of pilot burner A PNG ind ty SON 177 NNN RT NTH we N un PILOT BURNER PILOT BURNER IGNITION IGNITION SENSOR SENSOR TOO LOW TOO HIGH 4 IGNITION MAIN BURNER FLAME WILL FLAME WILL IMPINGE ON IMPINGE ON MAIN BURNER MAIN BURNER IGNITION SENSOR M3285 CONNECT PILOT GAS TUBING 1 Cut tubing to desired length and bend as necessary for routing to pilot burner Do not make sharp bends or deform tubing Do not bend tubing at control after compression nut has been tightened as this can result in gas leakage at connection 2 Square off and remove burrs from end of tubing 3 Push tubing into compression nut clearance hole until tubing bottoms NOTE When replacing a pilot burner or orifice cut off old compression fitting and replace with new compression fitting provided with new pilot burner Never use old compression fitting as it may not provide a gas tight seal See Fig 3 4 While holding tubing all the way in engage threads and turn until finger tight 5 Using a wrench turn compression nut one turn beyond finger tight DO NOT OVERTIGHTEN 6 Connect other end of tubing to gas control according to gas control manufacturer instructions Fig 3 Always use new compression fitting PILOT B
5. URNER BODY FITTING BREAKS OFF AND CLINCHES TUBING AS NUT IS TIGHTENED TIGHTEN NUT ONE TURN BEYOND FINGER TIGHT TO GAS CONTROL M3295 INSTALL THERMOCOUPLE OR THERMOPILE PUSH IN DESIGN 1 Insert thermocouple or thermopile tip into hole or barrel provided beneath pilot burner See Fig 4 2 Push in firmly until thermocouple or thermopile is locked into place ATTACHMENT NUT DESIGN 1 Insert thermocouple or thermopile tip into hole or barrel provided beneath pilot burner See Figs 4 and 5 2 Engage attachment nut threads and tighten until ther mocouple or thermopile is locked into place Fig 4 Installing thermocouple or thermopile THERMOCOUPLE OR THERMOPILE PUSH IN CLIP OPTIONAL ATTACHMENT NUT M3286 T Fig 5 Installing Q390 Thermocouple SCREW IN TYPE PILOT BURNER er THERMOCOUPLE SU ADAPTER N ATTACHMENT NUT M3269 INSTALL BLEED GAS TUBING if used 1 Route bleed gas tubing from bleed tapping on gas control to the pilot burner 2 Push clip into place See Fig 6 3 Insert bleed gas tubing until 3 8 inch 10 mm of tubing is above pilot burner bracket Tip of bleed gas tubing must not extend into pilot flame INSTALL A MOUNTING BRACKET ADAPTER optional To convert mounting brac
6. gas turn off gas supply at appliance service valve before starting installation and perform Gas Leak Test after completion of installation 3 Do not bend pilot tubing at the control or pilot after compression nut has been tightened Gas leakage at the connection may result Follow appliance manufacturer s instructions if avail able otherwise use instructions provided below LOCATION 1 Position pilot burner for easy access observation and lighting In replacement applications replace pilot burner with an identical unit and position new pilot burner in the same location and orientation as the original pilot burner 2 Mount pilot burner on main burner Mounting surfaces other than the main burner can shift bend or warp as furnace expands and contracts while operating See Fig 1 3 Mount pilot burner so the ignition flame remains properly positioned with respect to the main burner flame See Fig 2 4 Supply pilot flame with ample air free of combustion products 5 Do not impinge pilot flame on adjacent parts Do not impinge main burner flame on pilot burner 6 Do not expose pilot flame to falling scale which could impair ignition of main burner 7 Donotexpose pilot burnerto main burnerrollout while igniting or extinguishing 8 Do not expose pilot flame to drafts that push or pull pilot flame away from the thermocouple or thermopile Fig 1 Mount pilot burner on main burner PILOT BURNER GENERATO
7. ket from B mounting bracket to A mounting bracket install the A mounting bracket adapter to the pilot burner mounting bracket Then install pilot burner to main burner Fig 6 Bleed gas tube installation WHEN BLEED TUBE IS IN FINAL THIS DIMENSION SHOULD BE MAXIMUM OF 3 8 INCH 9 5 mm POSITION BLEED TUBE CLIP 1 8 IN STEEL TUBING M3284 CHANGE INSERT ORIFICES See Fig 7 1 Disconnect pilot tubing from the pilot burner and remove insert orifice Sometimes a light force is required to remove the orifice 2 Cut off old compression fitting NOTE When replacing an orifice cut off old compression fitting and replace with a new compression fitting Never use old compression fitting as it may not provide a gas tight seal See Fig 3 3 Square off end of pilot tubing and remove all burrs 4 Insert new compression nut over pilot tubing and slide out of the way 5 Insert new orifice into pilot burner and push pilot tubing into the pilot burner until it bottoms 6 While holding tubing all the way in slide compression fitting into place and engage threads Turn until finger tight 7 Using a wrench tighten compression fitting one turn beyond finger tight CHANGE SPUD ORIFICES See Fig 7 1 Disconnect pilot tubing from orifice 2 Unscrew old spud orifice and discard 3 Cut off old compression fitting NOTE When replacing an orifice cut off old compression fitting and replace with a
8. new compression fitting Never use old compression fitting as it may not provide a gas tight seal See Fig 3 4 Square off end of pilot tubing and remove all burrs 5 Insert new compression nut over pilot tubing and slide out of the way 6 Insert new orifice into pilot burner and tighten se curely 7 Push pilot tubing into orifice until it bottoms 8 While holding tubing all the way in slide compression fitting into place and engage threads Turn until finger tight 9 Using a wrench tighten compression fitting one turn beyond finger tight Fig 7 Changing spud and insert orifices INSERT a o CROSS SECTION INSERT ORIFICE gt ORIFICE M27083 Startup and Checkout PERFORM GAS LEAK TEST A WARNING FIRE OR EXPLOSION HAZARD CAN CAUSE PROPERTY DAMAGE SEVERE INJURY OR DEATH Check for gas leaks with soap and water solution any time work is done on a gas system GAS LEAK TEST 1 Ensure that gas supply is turned on at the appliance service valve 2 Paint pipe connections upstream of pilot burner with rich soap and water solution Bubbles indicate gas leak 3 If leak is detected tighten pipe connections 4 Stand clear of main burner while lighting to prevent injury caused from hidden leaks which could cause flashback in the appliance vestibule Light main burner 5 With main burner in operation paint pipe joints in cluding adapters and gas con
9. still does not light replace thermopile and repeat steps 1 through 6 9 Remove the jumper to shut off the main burner 10 Readjust pilot burner flame See Adjust Pilot Flame section 11 Reconnect the thermopile lead and ensure all connec tions are correct and the system is functioning properly 69 05 19 3 69 0519 3 Honeywell Home and Building Control Honeywell Inc 1985 Douglas Drive North Golden Valley MN 55422 Printed in U S A Home and Building Control Honeywell Limited Honeywell Limit e 740 Ellesmere Road Scarborough Ontario MIP 2V9 Helping You Control Your World QUALITY IS KEY
10. trol inlet and outlet with rich soap and water solution 6 If another leak is detected tighten adapter screws joints and pipe connections 7 Replace part if leak can not be stopped ADJUST PILOT FLAME The pilot flame should envelop 3 8 to 1 2 in 10 to 13 mm of the thermocouple or thermopile tip See Fig 8 To adjust pilot flame 1 Remove pilot adjustment cover screw from gas con trol 2 Turn inner pilot adjustment screw clockwise to decrease or counterclockwise f to increase pilot flame 3 Always replace pilot adjustment cover screw and tighten firmly after completing adjustment to ensure proper operation 69 05 19 3 Fig 8 Thermocouple or thermopile tip must be in pilot flame PROPER y FLAME ADJUSTMENT 3 8 TO 1 2 INCH 10 TO 13 MILLIMETRES A THERMOCOUPLE OR THERMOPILE M1973A IGNITE PILOT BURNER 1 Before lighting pilot burner turn thermostat to its lowest setting Wait for unburned gas to vent NOTE LP gas is heavier than air and will not vent upward Smell for LP gas next to floor If you smell gas shut off the main valve in the gas piping or ON LP AT THE TANK Perform Gas Leak Test to recheck all connections 2 Light pilot burner according to appliance manu facturer s instructions Service A WARNING FIRE OR EXPLOSION HAZARD CAN CAUSE PROPERTY DAMAGE SEVERE INJURY OR DEATH Perform Gas Leak Test anytime work is done to the system PILOT OUTAG
11. tures can be eliminated by proper pilot flame adjustment To adjust pilot flame see Adjust Pilot Flame section Fig 10 Proper shielding of pilot flame TYPICAL SHIELD PILOT TURNDOWN TEST 30 mV safety control systems The Pilot Turndown Test assures that the pilot flame ignites the main burner within four seconds from the time gas reaches the main burner In this test the pilot flame is just sufficient enough to hold in the power unit or just above the point of flame extinction whichever occurs at a higher pilot gas flow rate 1 With the pilot and main burner operating shut off the main burner by either lowering the thermostat temperature setting or turning the gas control knob to the PILOT position NOTE If using a Honeywell W129A Millivoltmeter turn the pilot gas adjustment screw until the thermocouple open circuit voltage is 2 mV Omit steps 2 3 and 4 and proceed with step 5 2 Turnthep ilot gas adjustment screw clockwise until the pilot begins to decrease in size Then turn the pilot gas adjustment screw clockwise CN 1 4 turn a time waiting one minute between each turn to allow the thermocouple to cool until safety shutoff power unit just drops causing safety shutdown 3 Turn pilot gas adjustment screw counterclockwise i slightly 4 Relight pilot burner The power unit should hold in 5 Turn gas control knob to ON position and set thermo stat temperature setting above room temperature Main burner sho
12. uld light within four seconds without flame rollout If not check pilot mounting and location instructions in Location section and repeat Pilot Turndown Test 6 Readjust pilot burner flame See Adjust Pilot Flame section EFFECTIVE IGNITION TEST 750 mV SYSTEMS The Effective Ignition Test assures that the pilot flame ignites the main burner within four seconds from the time gas reaches the main burner In this test the pilot flame is just sufficient to open the main gas valve 1 Light the main burner according to the appliance manufacturer s instructions and allow to burn at least five minutes 2 Remove one thermostat lead TH at the gas control terminal 3 Using the pilot gas adjustment screw decrease the pilot flame until it begins to pull away from the thermopile Allow thermopile to cool for one minute 4 Temporarily jumper the thermostat terminals TH on the gas control 5 If the main burner ignites reduce the pilot flame by turning the pilot adjustment screw 1 4 turn at a time until the valve fails to pull in Allow the thermocouple to cool at least one minute between each reduction in the pilot flame level 6 Increase the pilot flame just enough to pull in the gas control main valve 7 Jumper the thermostat terminals The main burner should light within four seconds and without flame roll out Tf it does not check the Location and Mounting instructions on page 1 and repeat steps 1 through 6 8 If main burner
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