30
Y
ES
661
NO YES
Y
ES
NO
Y
ES
NO
Y
ES
NO
Y
ES
NO
Y
ES
NO
Y
ES
NO
Y
ES
NO
Y
ES
NO
YE
S
NO
YE
S
NO
YE
S
NO
Y
ES
NO
Y
ES
NO
YE
S
NO
YE
S
NO
Output te
mp do
wn
(Afte
r
60 sec.
)
Check po
w
er
=< Min. BTU
Valve E O
ff
Valve F Off
Capacit
y check
=< Max
. BTU
Flow senso
r
=< 8.45GPM
Valve C Open
Start
Safet
y function
Capacit
y Check
=> Max
. BTU
Flow senso
r
=> 8.45GPM
Valve C control
Valve C Close
Capacit
y Check
=< Max
. BTU
Flow senso
r
=< 8.45GPM
Valve C control
Check po
w
er
=< Mid. BTU
Valve E O
n
Valve F Off
Valve E O
n
Valve F O
n
Thermocouple
=> 1mV
Thermocouple
=< 10mV
Thermocouple
=> 1mV
Thermocouple
=< 10mV
Fan speed up
=>15%
Display
: 1
01
Max bu
rning po
wer: 12
Thermocouple
=< 12mV
Fan speed up
3
%
*13
Abnormal fan r
ot
ation
(=<1000rpm
)
when
di
ffe
ren
ti
al
=>±
200rpm w
ith
setting
Abnormal bur
ning
E
D