L.B. White I-3 Infraconic - Manual (Page 20)

Is
there a
block
age in the
v
enturi tube?
19
Problem 1 Inner combustion cone will not lght
Is
thermostatic
head set t
o
maximum
setting?
Is the
orif
ice plugged?
Turn thermostat
up t
o
Its
maximum
setpoint.
R
eplace the primar
y burner
orif
ice.
Ye
s
No
Ye
s
Ye
s
Ye
s
Is the inner
combustion cone
plugged?
Is there air or
a block
age in the
gas hose or gas piping?
R
emo
v
e
block
age with com
pressed
air or replace the gas hose or pipe section. Bleed of
f an
y air fr
om the
gas line. Clean the heat
er
.
Clean the heat
er
.
No No No
Is pr
oper
gas pressure
supplied t
o
the
zone panel or
heat
er?
Pr
o
vide 5 PSIG
gas pressure.
Ye
s
No
Are all F
uel
Supply V
alv
es t
o
Heat
er Open?
Open all fuel
supply v
alv
es.
Ye
s
No
Def
ectiv
e
saf
ety contr
ol v
alv
e.
R
eplace the saf
ety
contr
ol v
alv
e.
Ye
s
No
Problem 2 Outer combustion cone does not heat up on high thermostat setting.
Has pr
oper gas pressure
been check
ed t
o
the
heat
er?
Check f
or pr
oper gas
pressure t
o
the heat
er
.
Pr
oper pressure at high
heat should read 5 PSIG.
Ye
s
No
Is
orif
ice plugged?
R
eplace it.
Ye
s
No
A
.
R
emo
v
e
thermostatic head fr
om v
alv
e
body at zone panel. If out
er cone lights,
replace the thermostatic head and sensor assembly
.
B.
If out
er cone still does no
t light, replace
thermostatic head v
alv
e body
.
Are there
block
ages in
gas hose, piping, or v
enturi tube?
R
emo
v
e
the
com
ponent
and clean It.
Ye
s
No