Honeywell Burner Q179B User Manual

Q179A,B Gas Pilot Burner Assemblies  
PRODUCT DATA  
FEATURES  
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.  
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.  
Rajah connectors facilitate disconnecting.  
Bracket permits side or end mounting.  
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.  
Contents  
Ordering Information ........................................................  
2
®U.S Registered Trademark  
Copyright © 2005 Honeywell Inc. All Rights Reserved  
60-2032-4  
 
   
Q179A,B GAS PILOT BURNER ASSEMBLIES  
LOCATION OF  
OPTIONAL  
THERMOCOUPLE  
FLAME ELECTRODE  
GROUND BRACKET  
3
IGNITION ELECTRODE  
(ON Q179A ONLY)  
ELECTRODE  
INSULATORS  
CLAMP SCREW  
INSULATOR  
BRACKET  
MOUNTING  
EARS  
FOR END  
MOUNTING  
1-1/2  
(38)  
2
1-5/16  
(33)  
4-7/64  
(104)  
7/32 (6)  
7/32  
(6)  
1
MOUNTING  
HOLES -  
1
THIS DIMENSION WILL VARY DEPENDING  
ON THE FLAME ELECTRODE AND INLET  
FITTING USED. FORMATION OF THE  
FLAME ELECTRODE AND GROUND FINS  
WILL VARY WITH THE BURNER TIP USED.  
7/32 DIA.  
FOR SIDE  
MOUNTING  
13/32  
(10)  
2
3
GAP BETWEEN IGNITION ELECTRODE AND  
BURNER TIP MUST BE 1/16 TO 3/32 INCH.  
13/32  
(10)  
1-3/16 (30)  
1-11/16 (43)  
Q179A1183 DOES NOT HAVE FLAME  
ELECTRODE OR GROUND BRACKET.  
1-29/32 (48)  
3 (74)  
M24193  
Fig. 2. Approximate mounting dimensions in in. (mm) and arrangement of parts.  
Inlet Fittings:  
1/4 inch compression coupling factory-installed on all models.  
GROUND  
Q179A  
SHIELD  
1300F (704C)  
Replacement Parts (See Table 1):  
FLAME  
ELECTRODE  
1750F (954C)  
37356 Rajah Connector—for ignition electrode.  
104312 Rajah Connector—for flame electrode.  
133445A Ignition Electrode and Insulator Assembly.  
Accessories:  
PILOT  
High temperature (higher than 125°F [52°C]) cable:  
Flame Rod Leadwire—part no. R1298020 (specify length)  
rated at 400°F (204°C).  
BURNER TIP  
1500F (816C)  
INSULATOR  
1050F (566C)  
Ignition Leadwire—part no. R1061012 (specify length), rated at  
350°F (177°C).  
High Tension Cable—part no. R1239001 (specify length), rated  
at 220°F (104°C).  
IGNITION  
ELECTRODE  
1750F (954C)  
PILOT  
ORIFICE  
780F (416C)  
FLAME  
ELECTRODE  
CONNECTOR  
750F (399C)  
IGNITION  
CONNECTOR  
750F (399C)  
M7859  
Fig. 3. Component maximum temperature ratings.  
3
60-2032—4  
 
Q179A,B GAS PILOT BURNER ASSEMBLIES  
Table 1. Additional Q179A, B Replacement Parts  
Orifice  
Natural Gas  
Ground and  
Flame Rod and  
Insulator Assembly  
a
Assembly Tip Style  
Tip  
Ground Shield  
LP Gas  
b
b
b
b
d
d
d
b
c
I
105063A  
102464A  
102464B  
120464D  
102464D  
102464F  
102464C  
102464H  
102464A  
133448A  
133450A  
133452A  
133444A  
133451A  
133446A  
133452A  
133448A  
395390-25  
395390-25  
395390-25  
395390-25  
395390-28  
395390-28  
395390-28  
395390-25  
395390-13  
45° I  
45° RH  
45° LH  
T
105064A  
105066A  
105067A  
105068A  
105069A  
105070A  
121831A  
45° Y  
45° T  
Large I  
a
b
c
d
On some ground areas, one or more prongs were intentionally removed at the factory.  
Orifice 0.025 in. (0.635 mm) diameter.  
Orifice 0.0130 in. (0.330 mm) diameter (order separately).  
Orifice 0.028 in. (0.711 mm) diameter.  
Install the Q179A,B  
INSTALLATION  
Install the pilot assembly so the pilot 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.  
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.  
Do Not Install the Q179A,B—  
Where ambient temperatures exceed those specified in  
Fig. 3.  
Follow instructions provided by burner manufacturer if  
available. If no instructions are furnished, use the following  
recommendations.  
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.  
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.  
Where the flame electrode is closer than one inch from  
a radiant refractory.  
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.  
WIRING  
CAUTION  
Gas Pressure Regulation  
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.  
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.  
Rajah connectors are furnished for making connections to the  
ignition and flame electrodes. The ignition electrode (A models  
only) takes a receptacle connector. The flame electrode (both  
A and B models) takes a plug connector and has a snap-action  
spring terminal.  
60-2032—4  
4
 
 
Q179A,B GAS PILOT BURNER ASSEMBLIES  
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 R1239001  
High Tension Cable rated at 220°F (104°C) or equivalent.  
available, a dc ammeter with a 0 to 25 microampere scale can  
be wired in series with the F lead of the flame detector circuit.  
A minimum flame current of 2.0 microamperes is considered  
acceptable.  
The Honeywell BCS 7700 and 7800 SERIES Flame Safeguard  
Control flame signals are measured in dc volts. A 20,000 volt/  
ohm meter with a 0 to 5 or 10 Vdc scale is recommended for  
measuring the flame signal of BCS 7700 controls while a one  
megohm/volt meter is recommended for 7800 SERIES  
controls. The flame signal voltages are measured as illustrated  
in Fig. 5 and 6.  
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 leadwire 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 Leadwire rated at 400°F (204°C) continuous duty or  
equivalent.  
The minimum acceptable flame signal voltage for the BCS  
7700 controls is 2.2 Vdc (maximum expected is 4.98 Vdc).  
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.  
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  
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.  
CAUTION  
Check to ensure the main valve opens only when  
the pilot flame is strong enough to ignite the main  
burner. Perform the pilot turn-down test as  
described in the Honeywell Flame Safeguard  
Control instructions.  
W136A VOLT-  
OHMMETER  
W136A SELECTOR  
SWITCH  
196146 METER  
CONNECTOR  
PLUG  
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.  
PLUG  
FLAME SIGNAL  
METER JACK  
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.  
PLUG-IN FLAME  
SIGNAL AMPLIFIER  
The performance of the pilot assembly can be determined by  
measuring the flame signal developed with the pilot operating.  
The flame signal (current/voltage) measurement requires the  
use of an appropriate volt-ohmmeter.  
RED (+)  
METER  
LEAD  
RED CONNECTOR  
BLACK CONNECTOR  
BLACK (–) METER LEAD  
M6532A  
Most existing Honeywell Flame Safeguard Controls  
Fig. 4. Measuring microamp flame signal.  
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  
Pilot Turndown Test  
If the flame rod is used to prove a pilot flame before the main  
fuel 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  
instructions.  
5
60-2032—4  
 
 
Q179A,B GAS PILOT BURNER ASSEMBLIES  
PROGRAM  
MODULE  
RESET  
BUTTON  
POSITIVE (+)  
METER LEAD  
ONE MEGOHM/VOLT  
METER  
NEGATIVE (-)  
METER LEAD  
20,000  
VOLT/OHM  
METER  
FLAME  
AMPLIFIER  
METER  
PROBES  
BCS 7700 CHASSIS MODULE FOOT MOUNT  
M7860  
M7382  
Fig. 5. Measuring BCS 7700 Control flame signal voltage.  
Fig. 6. Measuring 7800 SERIES Control flame signal  
voltage.  
60-2032—4  
6
 
Q179A,B GAS PILOT BURNER ASSEMBLIES  
7
60-2032—4  
 
Q179A,B GAS PILOT BURNER ASSEMBLIES  
Automation and Control Solutions  
Honeywell International Inc.  
1985 Douglas Drive North  
Golden Valley, MN 55422  
customer.honeywell.com  
Honeywell Limited-Honeywell Limitée  
35 Dynamic Drive  
Scarborough, Ontario M1V 4Z9  
® U.S. Registered Trademark  
© 2005 Honeywell International Inc.  
60-2032—4 M.S. Rev. 11-05  
 

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