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21
Rugged 10 pin
Expansion Header
Protective
header cap not
shown for clarity
FA
FA
24V
24V
TB1
R
C
JMP1
C1
D1
RESET
CB1
F1
K1
TB2
MXR
MXC
M6
M4
M2
M1
TB3
4
Z
O
N
E
K2
M6
M4
M2
M1
2
3
M6
M4
M2
M1
Z
O
N
E
Z
O
N
E
TB4
TB5
K3
K4
M6
M4
M2
M1
M6
M4
M2
M1
Z
O
N
E
D
M
P
R
O
A
TB6
1
K5
TB7
K7
M6
M4
M2
M1
NC
NO
C
E
B
D
TB8
K8
K9
G
Y2
Y1
O
B
W1
W2
E
RC
RH
RC
LINK
RH
H
V
A
C
S
Y
S
T
E
M
TB9
K1
0
K1
1
K1
2
K1
3
JMP3
K1
4
C
W
E
CONTROLS
INC.
Englishtown,
NJ
HVAC ZONE
CONTROL
SYSTEM
UZC4
SAS
SAS
OAS
OAS
RAS
RAS
S
E
N
S
O
R
S
TB11
TB10
T
S
T
A
T
4
C
W1
W2
O
Y1
Y2
R
G
B
E
C
W1
W2
O
Y1
Y2
R
G
B
E
TB12
T
S
T
A
T
3
C
W1
W2
O
Y1
Y2
R
G
B
E
T
S
T
A
T
2
TB13
C
W1
W2
O
Y1
Y2
R
G
B
E
T
S
T
A
T
1
TB14
CO
CO
ONE
ZONE
AUX R
TB15
2
2
EMERGENCY
NORMAL
RAS
SAS
OAS
STATUS
LIMIT
LIMIT
LIMIT
ZONE
ZONE
ZONE
ZONE
OPEN
OPEN
OPEN
OPEN
3
1
2
4
OPEN
OA DMPR
DMPR
BYPASS
AUX RELAY
FAN
COMPRESSOR1
COMPRESSOR2
EMERGENCY
W2 HEAT
VALVE ‘O’
REV
W1 HEAT
LED12
LED13
LED14
LED15
LED16
LED17
LED9
LED10
LED18
LED2
LED3
LED11
LED4
LED1
LED6
LED5
LED7
LED8
RESET
CPU
TIMER
RESET
OFF
SAS
ON
<
>
GAS
FAN
HYDRO
<
>
90
PURGE
180
s
s
<
>
OAS
STAGES
TMR
<
>
DF
HP
CONV
<
>
HP
GAS
SYSTEM
>
>
OFF
FAN PRG ON
<
>
OFF
R
%
50
ON
<
>
RA
<
AUX RLY
>
DA
ANY
<
FAN CTRL
>
Z
1
OFF
<
ZDL
>
ON
OFF
<
RAS
>
ON
0
RA LMT
+10
>
<
HC
HP
>
TSTAT
>
O
<
RV
>
B
1
2
CS#
>
<
BANK1
BANK2
R1
STAGING
TIMER
OAS
7
OFF
14
21
28
35
42
37
34
40
43
46
49
52
R2
COOLING
LIMIT
1ST
R3
LIMIT
STAGE
HEATING
DIFFERENTIAL
MULTI
STAGE
HEAT
R4
J1
120
110
130
140
150
160
170
12
19
26
33
40
47
5
D6
D5
D4
R7
R6
R5
D3
JMP2
D10
D7
D8
D9
R10
R11
R9
R8
D14
D13
D12
D11
R15
R12
R13
R14
D16
D15
R17
R16
R18
R63
R55
R53
R52
R54
R61
R60
Z1
R56
R57
R
19
C2
C54
D2
R
20
R
21
R
22
A
U
X
R
L
Y
C25
C26
C27
R65
R66
R67
R68
R71
R70
R69
R72
R73
R28
R27
R26
R25
R24
R23
D17
D18
D19
D20
D21
D22
R64
C48
C47
C46
C51
C50
C49
C52
SW3
R134
R128
R129
R130
R130
R132
R133
R135
R127
R126
R125
R124
R123
R122
U17
U18
U19
C42
C41
C40
C45
C44
C43
R121
R120
R119
R118
R117
R116
R115
R114
R113
R112
R111
R110
R109
R108
R107
R106
D23
C3
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R39
R40
R41
R42
R43
R44
R46
R45
R50
C28
C29
C30
C31
C32
C33
C5
C4
U2
U3
U4
R74
R75
R76
R77
R78
R79
R88
R87
R86
R85
R84
R83
R82
R81
R80
C34
C35
C36
C16
C6
C20
U6
U7
U5
R98
R97
R96
R95
R93
R94
R92
R91
R90
R89
C39
C38
C37
C23
C24
U8
U9
R105
R104
R103
R102
R101
R100
R99
J2
C8
C7
C
10
C
9
C
11
C
12
C
13
C
14
C
15
U15
U14
R47
C17
C21
C
22
C
19
U1
Y1
SW2
SW1
R51
R50
R48
R
49
R58
C18
Rugged
Damper
Motor
Terminal
Blocks
User Friendly Adjustable
Multi-function Potentiometers
D14
Supply,
Outside,
& Return
Air Sensor
Terminal
Blocks
Polarized
Power
Input
Terminals
Fire Alarm
Interlock
Terminals
and
Cuttable
Link
Resettable
Circuit
Breaker with
LED fault
indicator
4.0 amp
ISOLATING
DAMPER
POWER
TERMINAL
BLOCK,
BREAKER &
CUTTABLE
LINK
Rugged &
Versatile
Thermostat
Terminal
Blocks
18
17
Multi
Functional
Zone 1
Thermostat
Terminal
Block
On-Board
Emergency Switch
Bright System Status LED’s
On-Board
System
Rc/Rh Link
Easy Setup
16 Switch Bank
Isolated
HVAC
System
Terminal
Block
Multi
Function
Auxilary
Terminal
Block
Electronic
Bypass
Damper
Terminal
Block
Outside
Air
Damper
Terminal
Block
Figure 37.
UZC4 FEATURES AT A GLANCE
Heavy duty 10 amp
contact rated relays
SWITCH LEGEND
D24
R
52
LED19
GROUND FAULT
C53