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Table 9. M2 unit controller signal reference diagram
6
3
24 VAC COM24VAC
-
S - BUS
22 32323323
S
+
S2
P298 P299
P297
2
MS 9413-10-407MS 9413-03-401
MS 9413-10-408
MS 9413-10-409
3
Pin # Label Description Type Description Part Number
P297 Thermostat Assembly MS 9413-10-407
1 R TRANSFORMER 1 24VAC POWER 24VAC Header & Label MS 9413-10-011
2 C TRANSFORMER 1 24V COMMON 24V COMM - Header MSLO 9408-010-576-960-000-00
3 G BLOWER SIGNAL 24VAC DI - Label MZ 9400-10-007
4 W1 1ST STAGE HEATING 24VAC DI Screw terminal MF 9306-002-0A-002-G
5 W2 2ND STAGE HEATING 24VAC DI Screw terminal MF 9306-006-43-000-G
6 Y1 1ST STAGE COOLING 24VAC DI Screw terminal MF 9306-002-49-000-G
7 Y2 2ND STAGE COOLING 24VAC DI
8 OCP OCCUPIED SIGNAL 24VAC DI
9 GLO GLOBAL CONTROL INPUT 24VAC DI
10 RSV RESERVED NA
P298 IAQ Interface Assembly MS 9413-10-408
1 R TRANSFORMER 1 24VAC POWER 24VAC Header & Label MS 9413-10-012
2 C TRANSFORMER 1 24V COMMON 24V COMM - Header MSLO 9408-S10-000
3 IAQ+ INDOOR AIR QUALITY 0-10VDC AI - Label MZ 9400-10-008
4 GND INDOOR AIR QUALITY 0-10VDC AI Screw terminal MF 9306-002-60-000-G
5 HUM RH SENSOR 0-10VDC AI Screw terminal MF 9306-002-64-000-G
6 GND DIGITAL GROUND GND Screw terminal MF 9306-003-4D-000-G
7 TMP ZONE SENSOR 0-10VDC AI Screw terminal MF 9306-003-4L-000-G
8 DO1 SERVICE RELAY OUTPUT 24VAC DO
9 GND 24 VAC COMMON 24V COMM
10 DO2 EXHAUST FAN 24VAC DO
P299 Safety Assembly MS 9413-10-409
1 DI1 SMOKE DETECTOR (NO) 24VAC DI Header & Label MS 9413-10-013
2 R TRANSFORMER 1 24VAC POWER 24VAC - Header MSLO 9408-010-075-960-000-00
3 C TRANSFORMER 1 24V COMMON 24V COMM - Label MZ 9400-10-009
4 DI2 DIGITAL INPUT 2 FORMER (S42 & S135) 24VAC DI Screw terminal MF 9306-003-0H-000-G
5 R TRANSFORMER 1 24VAC POWER 24VAC Screw terminal MF 9306-002-0P-002-G
6 DI3 DIGITAL INPUT 3 FORMER (S149 & A42 FOR A BOX) 24VAC DI Screw terminal MF 9306-002-37-001-G
7 R TRANSFORMER 1 24VAC POWER 24VAC Screw terminal MF 9306-003-01-000-G
8 DI4 DIGITAL INPUT 4 FORMER (HUMIDITROL INPUT) 24VAC DI
9 C TRANSFORMER 1 24V COMMON 24V COMM
10 RSV RESERVED NA
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