7
Vari-Flow Air Management System
Wiring Diagram - Expanded System, all options
NOTE
This is an example of a wiring diagram for an expanded system, controlling up to 5 exhaust fans, 8 temperature
sensors and 1 supply fan. For a job specific drawing, look on the inside panel of the Vari-Flow cabinet.
U1
24VAC
120VAC
R1
Hood Run
A1
A2
RED
Fault Indicator
GRN
Full Speed Indicator
Full Speed
Fan On/Off
R3
14
11
AR
Hood Light Contactor
N
H
TR1
L4
L3
PB3
PB2
Hood Lights Switch
PB1
AR
2
3
6
Hood Lights Relay
R1
Hood Run Contact
14
11
GRN
Hood Run Indicator
L1
7
4
6
15
14
9
13
11
H1
Canopy lighting circuit must not exceed 15A total current
Fan Override
33
32
NO
C
38
39
40
41
PS1
PRESSURE
1
2
3
R5
Hood Light LED Contact
14
11
GRN
Hood Light Indicator
L2
2
V1
VC
GGH20/VAV Fan Mode
0VDC - Fan Auto
5VDC - Fan OFF
10VDC - Fan On for Dry
+ VDC
COM
Interlock Connection
G
BK 14GA
PR
BK
BL
BL
BL
BL
YW
OR
OR
BL
YW
PR
OR
BR
BL
YW
OR
+
-
o
NEUTRAL
BR
OR
RD
BL
R2
Hood Run
A1
A2
BL
R3
MUA Run
A1
A2
YW
T1
T2
17
16
19
18
1
21
20
T3
BR
OR
OR
OR
T4
23
22
OR
LL+
LL-
COM
R1
24
21
R4
14
11
R4
Shunt Trip Contact
Closes on Shunt Trip
22
21
36
37
}
Fire Contact
24 VAC
24 VAC
24 VAC
24 VAC
48
49
50
51
Fire System
35
34
REMOVE JUMPER IF USED
R4
Fire & Shunt Trip Relay
A1
A2
24 VAC
44
45
}
PR
PR
47
46
Tempering Status Contact
Closed Tempering On
Open Tempering Off
BL
YW
YW
YW
BR
YW
OR
OR
OR
OR
OR
PR
PR
PR
PR
PR
BL
PR
PR
PR
PR
RD
OR
BR
GN
RD
RD
34
31
58
59
54
55
56
57
OR
RD
RD
R1
RD
RD
XT91D00
XP91D02
J1
RT+
RT-
COM
1
2
3
4
1
2
3
4
I1
I2
I3
I4
CN1
CN2
INPUT
S
Note: 4-wire
jumper assembly
T5
T6
25
24
27
26
29
28
T7
T8
31
30
TB1
COM
24 VAC
TB1
COM
24 VAC
TB1
24 VAC
O7
O8
OUTPUT
S
YW
BL
YW
BL
BR
OR
OR
OR
OR
U2
U3
OR
BR
OR
BR
WT
RD
REMOVE JUMPER
IF USED
}
93-24V (H)
42-DO1
51-DO4
45-DO2
12-AI5
1-AICOM
48-DO3
1-AICOM
2-AI1
5-AI2
7-AI3
10-AI4
30-DI6
29-DI COM
80-AOV HOT
35-DIV HOT
DI COM-22
DI2-23
DI3-25
24V (C)-92
DO1 COM-41
DO4 COM-53
DI1-21
AVPS-13
DI7-31
DO2 COM-44
DI5-28
DI COM-22
AO4-78
AO COM-71
AI6-15
AICOM-1
AO1-72
AO COM-71
AO2-74
AO3-76
DI COM-22
DI4-26
24V (C)-92
EARTH-91
AOV COM-79
DIV COM-34
DO3 COM-47
BL
BL
BL
YW
YW
YW
Hood Lamp(s)
N1
R5
Hood Light LED Relay
A1
A2
HL
16GA RD
16GA RD
120 VAC
52
53
MC
MB
SC
S1
AC
A1
VFD
MUA1
L1
L2
L3
T1
T2
T3
}
}
LINE
LO
A
D
24V (C)-92
24V (H)-93
R3
24
21
42
43
BL
YW
}
24 VAC FAN ENABLE
TO MUA
MC
MB
SC
S1
AC
A1
VFD
L1
L2
L3
T1
T2
T3
}
}
LINE
LO
A
D
EF1
AC
A1
MC
MB
SC
S1
L1
L2
L3
T1
T2
T3
}
}
LINE
LO
A
D
VFD
EF2
MC
MB
SC
S1
L1
L2
L3
T1
T2
T3
}
}
LINE
LO
A
D
AC
A1
VFD
EF3
MC
MB
SC
S1
L1
L2
L3
T1
T2
T3
}
}
LINE
LO
A
D
AC
A1
VFD
EF4
MC
MB
SC
S1
L1
L2
L3
T1
T2
T3
}
}
LINE
LO
A
D
AC
A1
VFD
EF5
R2
14
11
64
65
60
61
62
63
RD
RD
R2
24
21
70
71
66
67
68
69
RD
RD
R2
34
31
76
77
72
73
74
75
RD
RD