Wiring Guide

TB-212
Model# VAC
WIRING DIAGRAM FOR
ONE ZONE SWITCH
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 732-446-3110 FAX [phone]
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P/N 090375A0212 REV. E 2.15.10 Copyright © 2003, EWC Controls Inc.
Install and wire up an optional REMOTE ONE ZONE switch to the UZC, NCM, or BMPlus series Control panels. Turn the
switch on to instantly setback/override control of the entire zoned system. All zone dampers will respond to Zone #1
thermostat only. The integrated red LED will illuminate on the white switch plate with black lettering to indicate that
ONE ZONE MODE is active. All other zone thermostats will be ignored until the switch is turned off. Ideal for vacations,
long weekends, or whenever the home is unoccupied for long intervals. Mount the switch close to the zone #1 thermostat
for remote activation of the ONE ZONE MODE. Includes a plastic 2x4 junction box.
TECHNICAL BULLETIN
O N E Z O N E M O D E
O F F
O N
1
4
2
5
3 6
SWITCH
Cap off #1
Not Used
INTERNAL
WIRE
J
1
ZONE3
MOTOR
ZONE2
MOTOR
MOTOR
ZONE1
24
T’FORMER
VAC
SYSTEM
M6
M4
M2
M1
M6
M4
M2
M1
M6
M4
M2
M1
R
C
G
Y2
Y1
O
RH
RC
W1
B
W2 E
LINK
RH
RC
D
4
3
D
C
1
C
2
+
+
SAS
SAS
OAS
OAS
C
W/E
O/B
Y
R
G
ONE
ZONE
EM
NORM
SW
4
ZONE1
STAT
T
D
11
D
12
D
13
D
10
2
ND STAGE HEAT
DIFFERENTIAL
LIMIT
HIGH
TEMPLOW TEMP
LIMIT
TIMER
OAS
STAGING
47
5
40
33
26
19
12
110
120
130
140
150
160
170
52
49
46
43
40
37
34
42
35
28
21
14
7
OFF
BMPlus3000B
W 2
EM
B
1
W
1
2
Y
Y
ZONE
ZONE
ZONE
FAN
1
2
3
STATUS
OAS
SAS
38
39
R
R
R
37
R
36
R
76
77
R
72
R
73
R
R
70
69
R
67
R
68
R
65
R
R
64
71
R
R
63
62
R
R
61
60
R
59
R
58
R
R
57
56
R
55
R
54
R
R
78
79
R
53
R
52
R
R
51
50
R
49
R
48
R
R
47
46
R
45
R
81
R
R
40
43
R
R
42
41
R
10
LED
9
LED
8
LED
7
LED
6
LED
5
LED
4
LED
3
LED
2
LED
1
LED
11
LED
6
U
U
7
U
8
5
U
4
U
U
2
3
U
U
1
1
K
2
K
3
K
4
K
5
K
6
K
7 K
8
K
R
1
2
R 3
R
4
R
RESET
1
D
2
D
C
11
8
C
7
C
15
C
5
C
R
35
C
10
13
C
Y
1
21
D
1
Z
14
C
SW
3
33
R
32
R
31
R
30
R
8
D
29
R
R
28
27
R
26
R
7
D
25
R
R
24
23
R
22
R
6
D
21
R
R
20
R
19
5
D
D
9
34
R
GAS
OFF
OFF
OAS
HC
HP
GAS
HP
TIMER
ON
HYDRONIC
ON
O
B
DF
<
<
<
<
<
< >
>
>
>
>
>
>
<
>
<
SYSTEM
HP
CONV
50
2
TSTATS
RV
STAGE
RULE
SAS
FAN
ND
CONTROLS INC.
Englishtown, NJ
E
W
C
SYSTEM
CONTROL
%
C
C
W/E
O/B
Y
R
G
ZONE3
STAT
T
F1
C
W/E
O/B
Y
R
G
9
C
66
R
82
R
R
44
R
14
R
R
15
16
U
9
12
C
R
13
ZONE2
STAT
T