Owner's manual

GF-123 Benchmark 2.0LN Low NOx Boiler Appendix HI
OMM-46_0E Installation, Operation and Maintenance Manual Wiring Schematics
PR2: 08/20/12 AERCO International Inc.● 100 Oritani Dr. ● Blauvelt, NY 10913. ● Ph: 800-526-0288 Page 157 of 170
ENCLOSURE
TO CONTROL BOX
SOLENOID
6 PIN CONNECTOR
195
194
193
192
191
190
210
208
209
202
203
206
204
201
AUTO RESET
OVER TEMPERATURE SWITCHES
MANUAL RESET
137
209 136
350
OVERLOAD
RELAY WITH
A2
MCR
POWER BOX
206
{
320
321
L1
261
366
GND BLOCK
142
261
L1
L2
N
60 HZ
120 VAC
263
200
203
GND
260
A1
263
210
120 VAC
T1
T1
T2
T2
331
T3
T3
95/NC
205
208
207
209
XFMR
24 VAC
205
204
202
201
FUSE
FUSE
200
190138135136193141
BLOWER PROOF SW.
142
154
WATER LEVEL PROBE
IGNITOR
351
321
FLAME ROD
GND
352
137
191
194 155 154
TRANSFORMER
IGNITION
141
192 140 195
19-PIN CONNECTOR
13161719 18 15 14
12
1110
9 8
7 6 5 4 3 2 1
16 15
134133
162
166168172 170
3
STEPPING
AIR/FUEL VALVE
SWITCH
POSITION
IGNITION SWITCH POSITION PURGE
C
53
MOTOR
5
K
B
A
BLK
WHT
YEL
BLU GRN
RED
2
10K
1
167
173
171
169
163
165
161
SHELL
SENSOR
TEMP.
CONTROL BOX CONNECTORS
16-PIN CONNECTOR
1314
12 11 10 9 8 7
6 5 4 3 2 1
164
7 6 5 4 3 2 1
7-PIN CONNECTOR
BLOCKED AIR INLET SW.
152 150 148 146
C
N
148
CLOSURE SWITCH
PROOF OF
LOW GAS PRESS. SW.
HIGH GAS PRESS. SW.
152
150
H
153
151
NC
1K
149
153 151 149
SAFETY
SHUTOFF VALVE
145
146
147
G
147 145
4
9-PIN CONNECTOR
789
56 123
332
BLOWER
MOTOR
104
103
A1
B1
A2 B2
C1
C2
DRIVE
REACTOR
332
331
GND
375
TO I/O BOX
0-10V
AGND
104
103
120 VAC, 60 HZ
WIRING SCHEMATIC, BMK 2.0 LN CP
REF: 68023 REV. C (SHT. 1 OF 2)
SENSOR
TEMP.
AIR
363
364
TO I/O BOX
AIR TEMP
SENSOR