Installation / Operation Instruction Manual

Page 56
7.I Ladder Diagrams (continued)
4
3
2
1
12
3
4
R2
L2L1
CB
OFF ON
120VAC
A
CB
CB
R2
POWER SWITCH
VFD CONTACTOR
X10-3
24VAC
CB
120VAC TRANSFORMER
TB1-24V TB1-24N TERMINAL STRIP 24VAC
TERMINAL STRIP 120VACTB1-120NTB1-120L
120VAC
P
BOILER PUMP
SYSTEM PUMP
DRY CONTACT
DRY CONTACT
DHW PUMP
24VAC TRANSFORMER
(NOT INCLUDED)
SPARK
GENERATOR
IGNITOR
SPARK
FLAME
ROD
OUTLET
CONVENIENCE
208/240VAC (1PH/60Hz)
TT-1
TT-2
DHW
DEMANDS
HEAT
TB1-120N
TB1-44
TB1-43
X2-8
X2-1
TB1-46
TB1-45
X2-8
X2-1
TB1-48
TB1-47
X2-8
X2-1
TB1-23
TB1-24
X14-1
X14-8
TB1-30
TB1-29
X14-11
X14-4
TB1-28
TB1-27
X14-10
X14-3
X10-1TB1-120L
CONTROLLER
POWER
BOILER INTEGRATED CONTROLLER (BIC)
BIC
(continued)
X22-1
X22-2
1
PRESSURE
TRANSMITTER - 1
PRESSURE
TRANSMITTER - 2
LMV BURNER CONTROLLER
X3-04-5
X3-04-4
X9-1
X21-1
2
3
1
2
3
X3-04-3
X3-04-2
X3-04-1
X5-03-4
SAFETY CHAIN IS SATISFIED
HEAT DEMAND FROM BOILER CONTROLLER
TB1-120L
TB1-120N
TB1-GND
CONTROLLER POWER
X5-03-2
X5-03-1
X3-05-1
X3-02-1
X5-01-2
X5-01-3
X5-02-2
X5-02-3
X4-02-3
TB1-120N
X10-05-2
X10-05-1
X8-02-1
MAIN GAS VALVE
TB1-120N
MAIN GAS VALVE
TB1-120N
1
X53 - AIR
23451
X54 - FUEL
2345
ACTUATOR
FUEL
ACTUATOR
AIR
O2 CONTROLLER
O2 SENSOR O2-1
O2-3-5
O2-3-4
BIC
X22-11
X22-12
RS485
TB1-120L
TB1-120N
TB1-GND
12VDC
L
N
G
V+
V-
O2-3-5
O2-3-4
CONTROLLER POWER
POWER SUPPLY
120VAC
FROM BIC
BLOWER
12
45
PWM SIGNAL
X22-7
BIC
X64-4 X64-3 X64-2
LMV
12
34
43
21
2
1
Outlet
Sensor
Dual Element
FACTORY
INSTALLED
10k
X1-1
20k
Dual Element
10k
20k
Sensor
Flue
Sensor
Inlet
X1-1
X1-1
X1-14
X1-2
X1-3
X1-13
X1-15
2
TB1
1
2
1
GND
GND
12
8
9
11
10
3
4
BOILER
21
22
17
16
20
18
13
N
120N
120N
120L
120L
120L
24N
24N
24N
24V
24V
24V
GND
GND
120N
25
24
23
AUXILIARY
PUMP
PUMP
ISOLATION
SYSTEM
DHW
33
31
32
28
27
30
29
DHW
SYSTEM
SYSTEM
SUPPLY
RETURN
OUTDOOR
26 L
N
36
35
38
37
Demands
Heat
-
41
39
40
+
42
BAS
0-10VDC
TT - 1
TT - 1
TT - 2
TT - 2
DHW
DHW
34
Analog
Input
Dry
Inputs
Sensor
Contacts
Outputs
LPUMP
Power
+
-
C
49
50
B
C
51
Contacts
Alarm Relay
Run Relay
Contacts
N.O.
N.C.
N.O.
N.C.
A
A
B
55
52
53
54
56
RS485
BMS
RS485
GND
GND
Cascade
5
6
GND
GND
7 120N
14
120L
15
24N
19
24V
3
PUMP
0-10VDC
Analog
Output
57
61
58
59
60
62
BELL
ALARM
63
64
VALVE
43
44
FIELD
INTERLOCK
Safety
Chain
PROOF OF
47
46
45
48
Valve
CLOSE
Isolation
PROOF OF
OPEN
X4-1
X4-11
X4-2
LWCO
X4-12
X4-3
X4-13
X4-4
X4-5
X4-14
HIGH GAS
X4-6
X4-15
LOW GAS
X4-16
X4-7
AUTO RESET
X4-17
X4-8
CONDENSATE
X4-18
SAFETY CHAIN
(24VDC)
PRESSURE
PRESSURE
HIGH LIMIT
X4-9
X4-19
MANUAL RESET
HIGH LIMIT
FIELD
SPARE
(24VDC)
SPARE
TB1-43
TB1-44
INTERLOCK
67
65
66
68
69
70
DWG# E23967 REV -
LOGIC DIAGRAM
CFT 1.0, 1.5, 2.0 208/240V 1PH
LABEL# H24054
DOCUMENT# H24055
Figure 29. Ladder Diagram, Models 1000, 1500, 2000. 208V / 240V, Single Phase