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INSERT
ORIFICE
M27083
SPUD
ORIFICE
INSERT
ORIFICE
CROSS SECTION
3 69-0519—3
Fig. 7—Changing spud and insert orifices.
Fig. 6—Bleed gas tube installation.
THIS DIMENSION SHOULD BE
MAXIMUM OF 3/8 INCH [9.5 mm]
WHEN BLEED TUBE IS IN FINAL
POSITION.
BLEED TUBE CLIP
M3284
1/8 IN. STEEL TUBING
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 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.
Startup and Checkout
PERFORM GAS LEAK TEST
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 control 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 to increase pilot flame.
3. Always replace pilot adjustment cover screw and
tighten firmly after completing adjustment to ensure proper
operation.