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APPENDIX D (continued)
Boiler must be grounded in accordance
with ANSI National Electric Code.
To Grounding
Ground Screw
Conductor
Terminal
A
Transformer
X1
X2
120vac
Concert Boiler
Control (A1167)
J4-12
P1-2
J4-8
P1-5
J4-10
(A8)
P2-3
J7-1
(A2)
P2-8
J6-1
(A3)
P2-9
J7-6
(Cut Jumper
When Limit
Used)
(LCI)
P2-10
J6-3
P2-5
P2-4
P3-1
(A4)
P3-7
J7-5
P3-8
(A5)
P3-9
J7-4
(A6)
P3-10
J7-3
P3-11
(A7)
P3-12
J7-2
P3-6
(ILK)
P3-5
J5-1
P1-3
J5-4
(A1)
P3-4
J6-2
P3-3
J5-2
P2-2
J6-7
P3-2
J6-8
Connect to V/C/P
Power Supply
Primary
Fuses
L2 L3
L1
D
B
C
X3
GRD
PCB-01
F1
(6.3A Slow Blow)
L1
70
L2
71
P2-1
P2-6
72
Back View
1
73
LT
74
2
C
NC
75
Condensate
J1
76
Float Switch
C
NO
77
Water Flow
J2
78
Switch
79
J3
80
81
N/A
82
83
N/A
84
85
N/A
J4
86
87
1
88
LWCO
2
89
P1
P2
90
91
Spare Limit
J5
92
93
Spare Limit
J6
94
Thermal Fuse
95
J7
96
C
NO
97
J8
Low GPS
98
C
NC
99
High GPS
J9
100
101
N/A
J10
102
Blocked Vent Switch
103
104
P1-6
Blue
Brown
Ignition
Transformer
For Spark
P2-7
3
107
2
1
3
Natural Gas
2
108
1
109
110
1
1.1
Alarm Buzzer with
111
RED
Internal Silence
A
B
112
PCB-05
P4a-1
P18b-1
P4a-3
P18b-2
R2
P4a-2
P18b-3
R1
24Vdc Display
P1-1
L (+)
Power Supply
P1-4
N (-)
Dual Gas Three Phase Wire Diagram
Combustion Blower Power
Blower
Fuses
GND
S
T
1
GND
L3
L2
L1
24vac
Continue to low
voltage circuit
120-24Vac
Transformer
Burner on/off
switch
3
PCB-03
P30-3
23
Cold Air Damper
J12
24
End Switch
25
Standby Loss
J13
26
Damper End Switch
27
Isolation Valve
J14
28
End Switch
29
External Limit
J15
(High Limit Auto
30
Reset when used
31
PN: 80160667)
Spare
J16
32
Limit
P30-4
Wiring Line Types:
Terminal Types:
Male/Female Connector
Screw Terminal
Low GPS 2
70
PCB Screw Terminal
C
NO
Ground Screw Terminal
LP
OFF
Wire Nut
NAT
Annotations:
High GPS 2
C
NC
Jumpers Cut: 1, 2, 3, 7, 8, 9, 11
Unused Terminals: 33, 34, 35, 37, 38
LP
Last Terminal: 118
OFF
NAT
APS
Blower On
C
NO
E
LP Gas
Valve
E
Valve
LP
OFF
NAT
39
Lockout Alarm
R2
Output
40
(Dry Contact)
Boiler Running
41
Output
R1
42
(Dry Contact)
84
Wiring Legend
Factory Wire Harness – Line Voltage
Factory Wire Harness – Low Voltage
Factory wiring special Igniter
Field Wiring – Line Voltage
Field Wiring – Low Voltage
Terminals :
C = Common
NC = Normally Closed
NO = Normally Open
J8
Uncut Jumper
J8
Cut Jumper
Optional Part
Field Installed
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