1626.docx
With the
the press
close.
The cont
jumping
switch fo
Pre-purg
seconds.
The cont
sequence
entering
A signal
pressure
control v
(IF blowe
pressure
Ignition a
Pow
blower runn
ure switch w
rol logic pre
this pressure
or main burn
e may last u
rol will attem
e 5 times bef
into a hard l
is passed thr
switch to the
valve.
er, venting, &
switch are a
attempt
TECH
werVent wit
ning,
will
events
e
ner.
p to 30
mpt this
fore
lockout.
ru the
e
&
all OK.)
HNICAL SE
Technical
1-80
th Electroni
IF the exhau
venting crea
back pressu
blockage, th
switch will
inducing a f
Exhaust pre
Breaks on p
-.45 ± .05 in
The hard lo
a manual po
control to c
lockout
This is the s
energize the
igniter is en
valve is ene
immediately
begins.
Visually ve
sparking ins
combustion
Pilot flame
immediately
ERVICE DE
l Service Bu
00-432-8373
ic Control S
ust side of th
ates too muc
ure due to
he pressure
not close
fault.
essure switch
pressure fall;
n w.c.
ockout will re
ower cycle o
lear the hard
signal neede
e igniter. Th
nergized and
ergized
y after the sp
erify the igni
side the
n chamber.
and main bu
y follow.
EPARTMEN
ulletin
3
Sequence of
he
ch
h:
;
equire
of the
d
ed to
he
d pilot
park
iter is
urner
NT
Operationss
3