PEERLESS PSC II Series, Инструкция по установке, эксплуатации и обслуживанию

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26
TROUBLESHOOTING
Figure 8.2: Boiler Troubleshooting Guide (Burners Not Functioning)
S
Y
S
TEM I
S
OKA
Y
CHECK FOR PR
OPER
V
O
L
T
A
G
E
A
T
CONTR
O
L HARNE
SS
(
S
EE IN
S
ET
A).
V
OL
T
A
GE
S
HOULD BE 24V
BETWEEN
THERMO
S
T
A
T AND
24V COMMON,
AND 24V BETWEEN
24V COMMON AND 24V HO
T
.
PLUG HARNE
SS
INT
O
GA
S
VA
L
V
E
CONTR
O
L.
W
A
IT FOR INTERNAL
CHECK DELA
Y
UNPLUG PILO
T BURNER CABLE.
MEA
S
U
R
E
V
O
LTA
G
E
AT
G
A
S
VA
L
V
E
H
S
I ELEMENT OUTPUT (
S
EE IN
S
ET B)
24V NOMINAL RECONNECT PILO
T BURNER CABLE
CYCLE
T
HERMO
S
T
A
T OFF AND B
A
CK ON
IF MAIN BURNER
S
DO NO
T LIGHT
,
REPLA
CE GA
S
VA
L
V
E
REPLA
CE GA
S
VA
L
V
E
REPLA
CE GA
S
VA
L
V
E
IN
S
ET B
IN
S
ET A
END
VIEW OF
CONTR
O
L
HARNE
SS
CONNECT
OR
24
V
O
L
T
THERMO
S
TAT
24 VO
L
T
S
24 VO
L
T
S
24
V
O
L
T
HO
T
CHECK FOR D
A
MA
GED OR MI
SS
ING
TERMINAL
S
IN CONNECT
O
R
24
V
O
L
T
COMMON
H
S
I
TERMINAL
NO NO
NO
NO
NO
YE
S
YE
S
YE
S
YE
S
YE
S
YE
S
YE
S
CHECK
TRAN
S
FORMER AND
LINE
V
OL
T
S
UPPL
Y
RECONNECT PILO
T BURNER
CABLE
REPLA
C
E
IGNITER/FLAME
R
O
D
A
SS
EMBL
Y
REPLA
C
E
IGNITER/FLAME
R
O
D
A
SS
EMBL
Y
IGNITER
W
ARM
S
UP AND
GLO
W
S
RED
NO
TE:
IGNITER
W
ILL CYCLE OFF
AND B
A
CK ON ONCE DURING
THE
90
S
ECOND IGNITION
TRIAL
MAIN
V
AL
VE OPEN
S
AND
MAIN BURNER LIGHT
S
● ● ● ●
TURN OFF GA
S
S
UPPL
Y
A
SS
URE GA
S
V
A
L
VE
S
WITCH I
S
IN "ON" PO
S
ITION
DI
S
CONNECT
S
Y
S
TEM CONTR
O
L
HARNE
SS
S
ET
THERMO
S
TAT
T
O
C
A
L
L
FOR HEA
T
● ● ●
CHECK:
LINE
V
O
L
T
A
GE PO
WER
LO
W
V
OL
T
A
GE
TRAN
S
FORMER
LIMIT CONTR
OLLER
THERMO
S
TAT
WIRING
● ● ● ● ●
CHECK
THA
T
PILO
T GA
S
I
S
FLO
W
ING.
W
A
IT
T
O
A
SS
URE PILO
T GA
S
TUBING
I
S
PURGED
.
● ● ●
MEA
S
URE
V
OL
T
A
GE BETWEEN 24V
HO
T AND 24V COMMON LEAD
S
TO
G
A
S
V
A
L
VE.
MU
S
T MEA
S
URE A
T
LEA
S
T
19.5
V
A
C
W
ITH IGNITER PO
WERED
.
S
EE IN
S
ET A
T
O IDENTIFY PR
OPER
LEAD
.THI
S
CHECK MU
S
T BE DONE
WITH
THE GA
S
V
A
L
VE CONNECTED
AND IGNITER PO
WERED
.
● ● ● ● ● ● ● ●
● ●
TURN ON GA
S
S
UPPL
Y
PILO
T BURNER LIGHT
S
CHECK
THA
T
PILO
T FLAME MAKE
S
GOOD CONT
A
C
T
W
ITH PILO
T BURNER
FLAME R
O
D
.
CHECK FOR GOOD ELECTRICAL CONNECTION
T
HR
OUGH
THE PILO
T
TUBING IF BO
TH OF
THE ABO
V
E ARE GOOD
,
REPLA
CE IGNITER/FLAME R
O
D
A
SS
EMBL
Y
.
● ● ● ● ● ● ● ● ●
NO
NO
1)
CHECK FOR 24V
A
C
A
T
PRE
SS
URE
S
WITCH "NO"
TERMINAL
T
O GR
OUND
.
IF NO
V
O
L
T
A
GE,
CHECK FOR:
- BLOCKED OR CRA
CKED
S
UCTION
TUBING.
- F
A
N NO
T GENERA
TING ADEQ
U
A
T
E
S
UCTION PRE
SS
URE.
- DEFECTIVE PRE
SS
URE
S
WITCH.
2)
CHECK FOR 24V
A
C
A
T
I
S
OLA
TION RELA
Y
BLUE
WIRE
S
T
O
GR
OUND:
- IF NO
V
O
L
T
A
GE A
T
EITHER BL
WIRE
S
,
CHECK FOR BR
OKEN/LOO
S
E
W
IRE.
- IF NO
V
O
L
T
A
GE A
T
ONL
Y ONE BL
WIRE,
CHECK FOR 120V
A
C
BETWEEN RELA
Y
BLA
CK AND
W
HITE
WIRE
S
.
IF
S
O,
REPLA
CE RELA
Y
.
3
)
C
HECK FOR 24V
A
C
A
T
FLAME R
O
LL-OUT
S
WITCH.
IF
S
WITCH I
S
BLO
W
N,
CORRECT
CA
U
S
E OF R
O
LL-OUT BEFORE
REPLA
CING
S
WITCH.
x
1)x 1)x 1)x 1)x- 1)x 1)x- 1)x
x
2)x 2)x 2)x- 2)x 2)x- 2)x- 2)x-
x
3
)x
3
)x
3
)x
CHECK FOR 24V
A
C A
T
PRE
SS
URE
S
WITCH
TERMINAL
S
"C" AND "NC"
T
O GR
OUND:
IF
V
O
L
T
A
G
E A
T
"NC" BUT NO
T "C",
PRE
SS
URE
S
WITCH I
S
S
TUCK IN
R
UNNING PO
S
ITION.
C
HECK FOR BLOCKED
AIR
TUBE.
IF OKA
Y
,
REPLA
CE PRE
SS
URE
S
WITCH.
IF NO
V
O
L
T
A
G
E A
T
EITHER PRE
SS
URE
S
WITCH
TERMINAL "C" OR "NC"
T
O
GR
OUND
,
CHECK FOR 120V
A
C INCOMING
PO
WER IN
S
IDE JUNCTION BO
X.
IF PR
OPER
INCOMING PO
WER,
REPLA
CE
TRAN
S
FORMER/RELA
Y
.
● ● ● ● ● ● ● ● ● ● ● ●
CHECK
FOR
120V
A
C
HIGH
LIMIT
CONTR
O
L.
IF
PO
WER
A
T
ONE
TERMINAL
B
UT
NO
T
B
O
T
H,
REPLA
CE
LIMIT
CONTR
O
L.
JUMPER
THERMO
S
TAT
A
T
CONNECTION
S
"G" AND "Y" ON TRAN
S
FORMER.
DOE
S
BOILER R
UN?
CORRECT THERMO
S
TAT
PR
OBLEM
NO
S
EE
T
A
BLE 8.1
DOE
S
IGNITER
W
ARM
UP AND GLO
W
RED?
(INTERMITTENTL
Y)
I
S
F
A
N R
U
NNING?
DO BURNER
S
FUNCTION?
YE
S
YE
S
YE
S
NO
YE
S
NO NO NO