Sheet 4979-1
Page 4
1. Adjust the profi le plates until a diff erential pressure of 1.0"w.c. can be
read across the duct air pressure taps on the feed end- plate (FEP).
The burner will operate with any duct diff erential pressure between
0.30 and 1.50"w.c. Air fl ow at the profi le plate must be of uniform
velocity and not spinning.
2. Ignite the gas pilot and adjust the gas fl ow (usually by screwdriver
adjustment in the gas cock) until fl ame is about 6" long and a good
fl ame detector signal is obtained.
3. Adjust the main gas control valve linkage for desired valve travel.
INSTRUCTIONS
(Burner with Gas Pilot)
4. Open the 1518 or 1519 Valve. With the control valve wide open, use a
metering orifi ce and manometer to adjust the gas pressure regulator
to obtain 1 000 000 Btu/hr for each lineal foot of burner. The fl ame
should then be mostly blue with some yellow tinges and about 24"
long with 1"w.c. duct diff erential pressure; 30" long with 0.5"w.c.
5. Adjust and test all burner safety devices--manual reset fuel shutoff
valve, purge timer, low fi re start, air fl ow switch, fl ame safety relay,
high and low gas pressure switches, over-temperature control, block
and vent valves, etc.
DIMENSIONS
inches
-12 (wt. 21 lb)
or -6 (wt. 11 lb)
-12-B (wt. 22 lb)
or -6-B (wt. 12 lb)
LI or LO
(wt. 20 lb)
FEP
Feed Endplate
(left )
(wt. 3 lb)
SEP
Support Endplate
(right)
(wt. 3 lb)
6
109⁄16
129⁄16
12
" for -
12
or -
12
-B
6
" for -
6
or -
6
-B
6
(-
12
, -
12
-B)
3
(-
6
, -
6
-B)
2½
fpt gas conn.
hole must be positioned
so it faces upstream
3⁄8
tubing or
1/8
pipe
4-5257-1 Pilot Assembly
6¼
SEP
7⁄8
bore
UV or
fl ame rod
location
hole for
pilot or igniter
¾
fpt
pipe
support
21⁄8
1¾
109⁄16
1⁄8
fpt
duct pressure
taps
7⁄8
bore
UV or
fl ame rod
location
Igniter
2
" fpt
gas conn.
21⁄8
17⁄16
109⁄16
6¼
FEP
9
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t 4979-1 06/99
DIMENSIONS SHOWN ARE SUBJECT TO CHANGE. PLEASE OBTAIN CERTIFIED PRINTS FROM FIVES NORTH AMERICAN COMBUSTION, INC.
IF SPACE LIMITATIONS OR OTHER CONSIDERATIONS MAKE EXACT DIMENSION(S) CRITICAL
.
Fives North American Combustion, Inc.
4455 East 71st Street - Cleveland, OH 44105 - USA
www.fi vesgroup.com
CONTACT
fna.sales@fi vesgroup.com
T +1 800 626 3477 - F +1 216 373 4237
