SECTION 10: B
URNERS
33 of 143
FIGURE 17: Typical "Type C" Burner
10.2 Burner Pilot Assemblies
"Type J"
bu
rners on the air t
u
rno
v
er
u
nits can
u
tilize
either a flame rod (nat
u
ral gas only) or a
u
ltra
v
iolet
scanner. On/Off, High/Lo
w
/Off and 3:1 mod
u
lating
nat
u
ral gas "J"
bu
rners
u
se a flame rod as standard.
8:1 and 10:1 mod
u
lating nat
u
ral gas "J"
bu
rners and
all LPG "J"
bu
rners
u
se a
u
ltra
v
iolet scanner as
standard.
All "Type C"
bu
rners
u
se an
u
ltra
v
iolet scanner. All
bu
rners are preset at the factory for proper operation
and firing rate. If field re-adj
u
stment of ignition
electrodes or flame rod is req
u
ired refer to
for the proper
pilot assem
b
ly set-
u
p.
FIGURE 1
8
: "Type J" Burner with Flame Rod - Natural Gas Only (Not for use with LPG)
10.3 Combustion Air Intake Collar
A
bu
rner can
b
e factory-fitted
w
ith an optional
com
bu
stion air intake collar, there
b
y allo
w
ing the
bu
rner to p
u
ll its com
bu
stion air from o
u
tside of the
u
nit's immediate
v
icinity. This collar adapts the
sq
u
are com
bu
stion air intake of the
bu
rner to a ro
u
nd
d
u
ct connector or con
v
erts it to a sq
u
are d
u
ct flange.
