5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
Boiler_Heat_Ena_L
Flush_Disable_L
SPI_CSK1
Hot_Air_Ena_L
Boiler_Drain
DMD_POT_VCC
DMD_POT
Steam_Mode_L
STM_DMD
(Flush/Drain_L)
Steam_D emand_Lamp
Heat_Demand_L
Steam_H i_Lmt
Boiler_Lo_LVL_H
Combi_Mode_L
24VDC
Hot_Air_Mode_L
SPAR E_SSR
SPI_SDI
SPI_CSK
SPI_SCK
SPI_SDO
VPP
RB3
RB7
RB6
VPP
Delime_Lamp
24VDC_Rtn
Boiler_Delime_Ena_L
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC VCC VC CVCC VCC V CC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC VCCVCC VCCVCCVCCVCC
Title
DRAW ING NUMBER REV
SHEET
OF
TH IS DRA WING IS T HE PROPE RTY OF G. S. BLODGE TT CORP ORATION. NEITHER THIS DRA WING
NOR A NY INFORMA TION CON TAINED H EREIN MAY BE COPIED O R USED, IN WHOL E OR IN PART,
WI THOU T T HE EXPR ESS WRIT TEN PERM ISSION OF T HE G.S. BLODGETT CORPORA TION.
© G . S. BLODG ETT C ORP ORATIO N. U NPUB LISHED WO RK. ALL R IGHTS RESE RVED
50 LAK ESID E AVE . BUR LINGT ON, VERMO NT 05 401
G.S. BLODGETT CORPORATION
SCALE
DATE
DWG
BY
DATE
AP R
BY
GAGE
MAT L
TO LER AN CES UN LESS O THER WISE SPEC IFIED
.XXX .XX ANGU LAR HOLE
±.015 ± .03 ± 1° ±.005
RE V EC N R EVISIO NS D AT E
APR BY
52854 B
SCHEMATIC, BCX14E, MANUAL
33MH
MH
04-29-10
04-29-10 N ONE
-
-
A
B0 9-083
MH
06-1 8-09
-
IN ITIA L R ELEA SE
B
B1 0-005
W ATE R SEN SOR BOARD
-
04-2 9-10
MH
-
___ -___
-
-
__-_ _-__
___
-
___ -___
-
-
__-_ _-__
___
RJ-11
24VAC SIGNALS
GREEN
LEDS
24VAC SIGNALS 24VAC SIGNALS
600V 1.5A
(KEYBOARD)
U1 U1 U2 U3 U5
(MAX 4 DEVICES)
DCE
DB-9/F
(SPARE)
(5.25v)
U19U7U6U4U1
10k 1T 10k 1T
U8 U21U20
F/D Switch
Spare Ouput
Fill_Solenoid
Boiler_Drain
Hot_Air_Ena_L
Steam_Demand_Lamp
Boiler_Heat_Ena_L
Demand_Lamp
Boiler_Fill_Ena_L
R11
2.2k 5% 1w
U7C
74HC14
5 6
U7A
74HC14
1 2
FBC2
DSS306
1
2
3
U15
HCPL-3700
+AC
1
+DC
2
-DC
3
-AC
4
GND
5
Vo
6
nc
7
Vcc
8
FB2
+
C1
6800u f 35v
12
+
C24
6.8 uF 25v
12
+
C21
6.8 uF 25v
12
RN1D
47k SIP
5
C27
.1uF
Y1
4MHz
GND
4
nc
1
VCC
8
Out
5
FB13
RN4C
4.7 k SIP
4
R1
13
2
LED16
U7F
74HC14
13 12
U19B
74HC02
5
6
4
C43
.1uF
FB17
RN4D
4.7 k SIP
5
FBC5
DSS306
1
2
3
R14
2.2k 5% 1w
+
C12
6.8 uF 25v
12
J5
CON 6
1
2
3
4
5
6
RN5I
390 SIP
10
FBC6
DSS306
1
2
3
FBC3
DSS306
1
2
3
C4
.1uF, 50V
LED14
U21
AT25256
VCC
8
GND
4
CS
1
SO
2
WP
3
SI
5
SCK
6
HOLD
7
LED10
R22
2.2k 5% 1w
LED15
+
C31
6.8 uF 25v
12
RN3E
47k SIP
6
FB6
C23
.1uF
MH4
R26
2.2k 5% 1w
C35
.1uF
FB18
C5
.1uF
RN5D
390 SIP
5
LED12
FB7
LED11
U1
nc
1
mclr/vpp/thv
2
RAO/ANO
3
RA1/AN1
4
RA2/AN2/Vref-
5
RA3/AN3/Vref+
6
RA4/TOCKi
7
RA5/AN4/SS!
8
RE0/RD!/AN5
9
RE1/WR!/AN6
10
RE2/CS!/AN7
11
VCC
35
GND
34
OSC1/CLKIN
14
OSC2/CLKOUT
15
RCO/T1OSO/TICK1
16
nc3
28
RC1/T1OSI
18
RC2/CCP1
19
RC3/SCK/SCL
20
RD0/PSP0
21
RD1/PSP1
22
RD2/PSP2
23
RD3/PSP3
24
RC4/SDI/SDA
25
RC5/SDO
26
RC6/TX/CK
27
nc2
40
RC7/RX/DT
29
RD4/PSP4
30
RD5/PSP5
31
RD6/PSP6
32
RD7/PSP7
33
GND
13
VCC
12
RB0/INT
36
RB1
37
RB2
38
RB3/PGM
39
nc1
17
RB4
41
RB5
42
RB6/PGC
43
RB7/PGD
44
FBC4
DSS306
1
2
3
LED3
AMBER
RN6E
390 SIP
6
- +
D1
WO6GGI
FBC1
DSS306
1
2
3
U8B
74HC14
3 4
RN4G
4.7 k SIP
8
FB14
R13
2.2k 5% 1w
FB8
RN2C
47k SIP
4
R2
13
2
R5
100k
U20
DS1306
Vcc1
16
X2
4
Vbat
2
X1
3
SDO
13
Vccif
14
32KHz
15
Vcc2
1
INTO
5
INT1
6
1Hz
7
GND
8
SDI
12
SCLK
11
CE
10
SERMOD
9
LED4
AMBER
RN4B
4.7 k SIP
3
C37
.1uF
U2
LT1281ACS
C1+
1
C1-
3
C2+
4
C2-
5
V+
2
V-
6
TR1IN
11
TR2IN
10
REC1OUT
12
REC2OUT
9
REC2IN
8
REC1IN
13
TR2OUT
7
TR1IOUT
14
D18
1N4001
12
FB1
MH3
RN2B
47k SIP
3
C33
.1uF
+
C11
6.8 uF 25v
12
RN4H
4.7 k SIP
9
LED7
AMBER
C20
.1uF
RN4F
4.7 k SIP
7
D17
IN4148
U18
HCPL-3700
+AC
1
+DC
2
-DC
3
-AC
4
GND
5
Vo
6
nc
7
Vcc
8
C25
.1uF
C34
.1uF
RN6G
390 SIP
8
U19A
74HC02
2
3
1
BT1
3V_Li
12
RN3C
47k SIP
4
Y2
32.768KHz
12
R16
2.2k 5% 1w
U16
HCPL-3700
+AC
1
+DC
2
-DC
3
-AC
4
GND
5
Vo
6
nc
7
Vcc
8
J3
WAGO/12P/7.5MM
1
2
3
4
5
6
7
8
9
10
11
12
C41
.1uF
C8
.1uF
TP2
C10
.1uF
R15
2.2k 5% 1w
D2
1N5821
1 2
RN1C
47k SIP
4
RN6A
390 SIP
12
+
C26
6.8 uF 25v
12
R4
3.32k
C40
.1uF
MH6
FB19
+
C19
6.8 uF 25v
12
RN5H
390 SIP
9
FB15
U10
HCPL-3700
+AC
1
+DC
2
-DC
3
-AC
4
GND
5
Vo
6
nc
7
Vcc
8
+
C14
6.8 uF 25v
12
U3
74HC595
SER
14
SRCLK
11
SRCLR
10
RCLK
12
G
13
QA
15
QB
1
QC
2
QD
3
QE
4
QF
5
QG
6
QH
7
QH
9
VCC
16
GND
8
U8F
74HC14
13 12
FB4
U19C
74HC02
8
9
10
J2
SPI I/O
1
2
3
4
5
6
7
8
9
10
LED6
AMBER
C18
.1uF
RN6H
390 SIP
9
C6
.1uF
RN3B
47k SIP
3
RN5G
390 SIP
8
TP4
FB12
R21
1k
R27
2.2k 5% 1w
RN4E
4.7 k SIP
6
RN3A
47k SIP
1 2
U14
HCPL-3700
+AC
1
+DC
2
-DC
3
-AC
4
GND
5
Vo
6
nc
7
Vcc
8
+
C22
6.8 uF 25v
12
U12
HCPL-3700
+AC
1
+DC
2
-DC
3
-AC
4
GND
5
Vo
6
nc
7
Vcc
8
U8A
74HC14
1 2
TP3
+
C15
6.8 uF 25v
12
LED13
U8E
74HC14
11 10
U7B
74HC14
3 4
RN5B
390 SIP
3
L1
220uH
U7E
74HC14
11 10
R12
2.2k 5% 1w
U7D
74HC14
9 8
R25
2.2k 5% 1w
U17
HCPL-3700
+AC
1
+DC
2
-DC
3
-AC
4
GND
5
Vo
6
nc
7
Vcc
8
U11
HCPL-3700
+AC
1
+DC
2
-DC
3
-AC
4
GND
5
Vo
6
nc
7
Vcc
8
RN3D
47k SIP
5
C32
.1uF
FB16
RN6B
390 SIP
3
+
C28
6.8 uF 25v
12
R24
2.2k 5% 1w
C42
.1uF
R29
2.2k 5% 1w
R23
100k
RN4I
4.7 k SIP
10
TP1
R31
10k 1% 1/4w
U6
UDN2595A
VCC
9
In1
1
In2
2
In3
3
In4
4
In5
5
In6
6
In7
7
In8
8
O8
11
O7
12
O6
13
O5
14
O4
15
O3
16
O2
17
O1
18
GND
10
RN6D
390 SIP
5
RN2D
47k SIP
5
R17
2.2k 5% 1w
J4
WAGO/8P/7.5MM
1
2
3
4
5
6
7
8
R19
2.2k 5% 1w
LED9
AMBER
D19 1N4001
12
P1
5
9
4
8
3
7
2
6
1
10
11
RN2A
47k SIP
1 2
JP1
In=GAS
RN5F
390 SIP
7
MH1
+
C9
6.8 uF 25v
12
RN1E
47k SIP
6
+
C3
470uf 25V
12
R28
2.2k 5% 1w
RN5A
390 SIP
12
U13
HCPL-3700
+AC
1
+DC
2
-DC
3
-AC
4
GND
5
Vo
6
nc
7
Vcc
8
J1
WAGO/6P/7.5MM
1
2
3
4
5
6
RN5E
390 SIP
6
FB5
RN6F
390 SIP
7
R18
2.2k 5% 1w
+
C2
470uf 35V
12
+
C17
6.8 uF 25v
12
C39
.1uF
R20
2.2k 5% 1w
MH2
U8D
74HC14
9 8
C29
.1uF
U9
LM2575_TO220_5P
Vin
1
ON_OFF
5
GND
3
OUT
2
FDBACK
4
U4
74HC595
SER
14
SRCLK
11
SRCLR
10
RCLK
12
G
13
QA
15
QB
1
QC
2
QD
3
QE
4
QF
5
QG
6
QH
7
QH
9
VCC
16
GND
8
FB9
U19D
74HC02
11
12
13
R3
1k
C36
.1uF
R6
10k
FB3
C38
.1uF
R30
2.2k 5% 1w
RN1A
47k SIP
1 2
C7
.1uF
LED17
MH5
RN4A
4.7 k SIP
1 2
+
C30
6.8 uF 25v
12
FBC7
DSS306
1
2
3
RN6C
390 SIP
4
FB10
FB11
U5
UDN2595A
VCC
9
In1
1
In2
2
In3
3
In4
4
In5
5
In6
6
In7
7
In8
8
O8
11
O7
12
O6
13
O5
14
O4
15
O3
16
O2
17
O1
18
GND
10
LED8
AMBER
RN2E
47k SIP
6
RN5C
390 SIP
4
C16
.1uF
FB20
U8C
74HC14
5 6
J6
Expansion
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LED1
AMBER
C13
.1uF
LED5
AMBER
LED2
AMBER
RN1B
47k SIP
3
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