
IM 738-2
71
Wiring Diagrams
Figure 78. VAV control inputs
/1.68
/1.68
H228-1
H229-2
DRN-4
CONTACT MUST BE OPEN
DURING NORMAL OPERATION
TO CCB1
H231-1
H232-2
DRN-4
H230-3
H223-1
H224-2
DRN-4
BUILDING
BACKNET
MSTP
H221-2
H227-2
DRN-4
H226-1
H220-1
DRN-4
NOTES TO FIELD:
1.
REFER TO I.M. FOR
MICROTECH II ALARM
CONFIGURATION.
2.
TO ENABLE SOFTWARE
INTERNAL TIME CLOCK,
TERMINALS 101 & 102
MUST NOT BE
JUMPERED
THE FIELD TO REMOVE
JUMPERS WHEN
INSTALLING COOL/HEAT
ENABLE SWITCHES
3.
SHOWN IN NIGHT
OR UNOCCUPIED
MODE
DISCHARGE AIR
TEMPERATURE
EXTERNAL RESET
H228-4
H228-1
H231-1
H231-3
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
156
203
200
610
115V
24V
CLASS 2
RS232 PORT
AI7
AI6
AI5
BI7
BI6
BI5
AI4
AI3
AI2
AI1
BI4
BI3
BI2
BI1
MICROPROCESSOR CONTROL BOARD
ANALOG
INPUT
BINARY
INPUT
SW1
#6
(ENTERING FAN
TEMPERATURE)
GAS HEAT ALARM
SW1
#7
(DRIVE
SIDE)
5VDC
PWR SUP
DISPLAY
IS LOCATED ON DEADFRONT
A (DB9-MALE) CONNECTION
CONN.
SW1
#4
(RETURN AIR
SENSOR)
OFF
ON
AUTO
SW1
#2
SW1
#5
SW1
#3
SW1
#1
(DISCHARGE AIR
SENSOR)
(OUTDOOR AIR
SENSOR)
COOL_ENABLE
HEAT_ENABLE
MANUAL_ENABLE
OVERRIDE
REQ'D FOR NIGHT SETBACK OR SPACE RESET
ZONE OR
SPACE
SENSOR
AIR FLOW
5
4
3
2
4
1
7
6
R
5
4
R
3
2
R
1
7C
7
6C
6
5C
5
4C
4
3C
3
2C
2
1C
1
P1
REF
N2-
N2+
J1
COM
24VAC
14
15
GRD
16
10
11
12
13
2
1
2
1
4
3
23
24
1
2
4
WHT
BLK
DRN
3
5
111
WHT
BLK
DRN
1
2
3
3
4
1
2
G
5V+
H
5V-
RED
WHT
BLK
DRN
RS-232
1
2
4
WHT
BLK
DRN
REF
N2-
N2+
128
129
WHT
BLK
DRN
GRD
3
2
1
104
102
105
106
101
101
1
2
4
A
C
1
2
4
A
C
WHT
BLK
DRN
WHT
BLK
DRN
WHT
BLK
DRN
WHT
BLK
DRN
4
3
132
133
120
121
GRD
GRD
108
41
12
112
3/Y
1/R
101
PVM1
T2
MCB
TB1B
T1_115VAC
T1_N
TB1B
F3
S1/6.00
115T1/1.68
S1
S1
TB1D
PL5
+PP
EFT
+NB
R24
TB2
N2+/8.06
N2-/8.06
REF/8.07
DFRH_DS
+NB
PL22
+PP
PWR
KEYPAD
SERIAL
PL1
+PP
RAT
+NB
BCNT
TB2
S7
TB2
TB2
TB2
TB2
TB2
TB2
PL2
+PP
DAT
+NB
PL3
+PP
OAT
+NB
TIME_CLOCK
+NB
ZNT1
+NB
TB2
TB2
PL15
+PP
PL15
+PP
PC7
+NB
TB_101
TB2
FS1
+NB
TB2
TB_101
3
NJ=VDC
t
v
3=NTC
2=MA
1=RTD
2
1
3=NTC
1=RTD
NJ=VDC
2=MA
2
t
v
1
3
3
NJ=VDC
t
v
3=NTC
2=MA
1=RTD
2
1
COMM. CARD
BACNET-MSTP
3=NTC
1=RTD
NJ=VDC
2=MA
2
t
v
1
3
3
NJ=VDC
t
v
3=NTC
2=MA
1=RTD
2
1
3
NJ=VDC
t
v
3=NTC
2=MA
1=RTD
2
1
3
NJ=VDC
t
v
3=NTC
2=MA
1=RTD
2
1
203A
168A
168B
204A
168C
204B
201A
200A
230C
229C
228C
225A
210D
210C
209C
214B
233C
232C
231C
214A
208C
225C
224C
223C
211A
210A
209A
227D
227C
226C
221D
221C
220C
219C
218C
217C
217A
215A
215C
228A
231A
220
223
(Schematic continues on next page.)