Appendix h, Control box connectors, Input/output box – AERCO BMK 3.0 LN Natural Gas July 2011 User Manual
Page 120
APPENDIX H
H-8
CONTROL BOX CONNECTORS
12
10 11
13 14
16
15
17 18 19
21
20
22 23 24
24-PIN CONNECTOR
241
240
242
243
244
245
251
246
250
247
252
254
253
9
6
8 7
5 4 3
1
2
220
221
219
16-PIN CONNECTOR
8
5
4
6 7
9
1 2 3
11
16
14
15
13 12
10
226
213
214
216
215
7
6
7
5
3
4
6
1
2
OUT
IN
OUT
IN
IN OUT
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
4
3
7 8
6
5
9 10
12
11
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
12
11
10
9
13 14 15
231
234
232
233
238
236
235
237
239
INPUT/OUTPUT BOX
+
-
LS2
LS1
LS4
LS3
J3
J2
J1
212
211
0-10V
AGND
FROM AIR
TEMP SENSOR
TO VFD
FAULT RELAY
NOT USED
WIRING SCHEMATIC, BMK 3.0
460 VAC 3 PHASE IRI
REF: 68024 REV. E (SHT. 2 OF 2)