Owner's manual

Appendix H Benchmark 2.0LN Low NOx Boiler GF-123
Wiring Schematics Installation, Operation and Maintenance Manual OMM-0046_0E
Page 158 of 170 AERCO International Inc.● 100 Oritani Dr. ● Blauvelt, NY 10913. ● Ph: 800-526-0288 PR1 08/20/12
CONTROL BOX CONNECTORS
1210 11 13 14 1615 17 18 19 2120 22 23 24
24-PIN CONNECTOR
241
240 242
243
244
245 251
246 250
247
252 254
253
9 68 7 5 4 3 12
212
220
221
211
219
16-PIN CONNECTOR
854 6 7 91 2 3 1116 1415 13 12 10
226
213
214
216
215
7 6 7 5 3 4 6 1 2
OUT
IN
OUT
IN IN
OUT
FAULT
RELAY
NOT USED
DELAYED INTLK
EXHAUST TEMP
REMOTE INTLK
N.O.
C
4 3 5 1 2
NOT USED
N.C.
C
N.O.
N.C.
RELAY
AUX
12 13 14 11
SENSOR EXCIT. (12 VDC)
BMS (PWM) IN
ANALOG IN
OXYGEN SENSOR IN
FLOW SENSOR IN
CO SENSOR IN
+
- -
+
-
+
-
+
AUX SENSOR IN
SENSOR COMMON IN
-
+
1
OUTDOOR AIR SENSOR IN
9
8 7 5 3 4 2
6
10
IN
GND
4
1 2 1
-
+
2 2 1 3
3
ANALOG OUT
15 16
SHIELD
B
RS-485 IN
A
1 2 43 7 865 9 10 1211
87654321
87654321 1211109 13 14 15
231
234232
233
238236
235 237
239
INPUT/OUTPUT BOX
+
-
LS2
LS1
LS4
LS3
J3 J2
J1
ANALOG OUT
+
-
FROM AIR
TEMP SENSOR
TO BLOWER
0-10V
AGND
WIRING SCHEMATIC, BMK 2.0 LN CP
120 VAC, 60 Hz
REF: 68023 REV. C (SHT. 2 OF 2)