Info 144
4/94
ECLIPSE AIR HEAT BURNERS
Series “AH-O” &“TAH-O”
U.S. Reissue Pat. No. 26,244 Canadian Pat. No. 743,782
AH-O, Front View
Data 144-1
AH-O, Back View
Data 144-1
TAH-O, Front View
Data 144-2
Warning
The burners covered in this Guide are designed to
mix fuel with air and burn the resulting mixture. All
fuel burning devices are capable of producing ex-
plosions and fires when improperly applied, in-
stalled, adjusted, controlled, or maintained. This
Guide will provide information for using these burn-
ers for their limited design purpose. Do not deviate
from any instructions or application limits in this
Guide without written advice from the Eclipse Com-
bustion Division in Rockford, Illinois. Read this en-
tire Guide before attempting to light burners. If you
do not understand any part of the information in this
Guide, contact your local Eclipse representative or
Eclipse Combustion before proceeding further.
ECLIPSE COMBUSTION
6.0 Trouble-Shooting
Symptom
Cause
Check
Remedy
1.
Burner does not
a) Air pressure switches
a) Check pressures in
a) Change pressure
start initially.
not making.
duct at location of
connections where
switch connections.
a more positive
b) Faulty pressure
b) Check electrical
pressure is present.
switches.
portion of switch.
2.
Burner kicks out
a) Low gas pressure
a) Check low pressure
a) Reset
shortly after start-up.
switch set too high.
switch setting.
3.
Pilot will not ignite on
a) Raw gas fed into pilot
a) Check spark plug for
a) Adjust pilot gas cock by
initial light-off.
causing carbon hair on
carbon hair; also check
first screwing needle
spark plug.
gap on plug (should be
closed, then with trans-
3/64" - 3/32".
former powered, open
needle slowly 1/4 turn
at a time.
4.
Flame failure when
a) Gas pressure to pilot
a) Check pilot gas pressure
a) Relocate pilot gas line or
burner goes to high fire.
regulator too high.
to regulator (should be
use second pilot
1 PSIG maximum).
regulator.
b) Bolts which fasten pilot
b) Check tightness of bolts.
b) Tighten bolts.
casting to burner are not
c) Clean impulse line of any
tight enough.
c) Check impulse line for
dirt particles and relocate
c) Pilot regulator not react-
possible dirt clogging;
duct connection to trans-
ing fast enough to duct
also check impulse line
mit maximum duct
pressure changes.
duct connection to
pressure.
d) Check valve stuck open.
determine if an effective
d) Clean check valve.
pressure is being trans-
e) Too much pilot gas.
mitted to regulator.
e) Reduce pilot gas flow.
5.
Flame failure when main
a) Gas pressure to pilot
a) See Check 4a.
a) See Remedy 4a.
burner returns from high
regulator.
to low fire.
b) Under-gassing pilot.
b) Check pilot regulator
b) Open needle on pilot
inlet and outlet gas
adjusting cock slowly
pressures; also check
1/4 turn at a time.
pilot flame.
c) See Check 4c.
c) See Remedy 4c.
6.
Main flame too large at
a) Gas pressure too high
a) Check gas pressures.
a) Screw out on main gas
high fire.
at burner inlet.
pressure regulator.
Adjust linkage on gas
b) Combustion air pressure
b) Check air pressure
control valve to hold
too low.
differential.
valve less than full open
when at high fire.
c) Check valve stuck open.
b) Open air shutter on
makeup air blower.
c) Clean check valve.
7.
Main flame not
a) Air pressure
a) Check air pressure
a) Close air shutter on
extending beyond face
differential too high.
differential between
makeup air blower.
of burner at high fire.
b) Burner not firing rated
combustion air manifold
b) Screw in on main gas
input.
and main duct.
pressure regulator to
b) Check gas pressure
provide more gas.
c) Burner gas holes
differential.
c) Clean gas holes with #42
plugged.
c) Check gas holes for dirt
MTD drill. Clean air
or lint.
holes with #27 MTD
drill.
8.
Main flame long and
a) Velocity past burner
a) Check velocities and
a) Open shutter on
yellow.
lower than 500 FPM.
rotation of main
makeup air blower.
b) Check valve stuck open.
circulating fan.
b) Clean check valve.
ECLIPSE COMBUSTION
Litho In U.S.A.
