Lochinvar SYNC 1.0 - Manual (Page 38)

Installation & Operation Manual
7
Field wiring
1 ALARM
LBL20052 RE
V B
30 SHIELD GND
MOD BUS
0 - 10V INPUT
2 C
O
NT
AC
TS
3 RUN
T
IME
4 C
O
NT
AC
TS
5 L
O
UVER
6 PROVING 7
M
O
DU
LE 2
8
FL
O
W
SW
IT
CH
9
MODULE 1
10 FL
OW
SW
IT
CH
29 A 26 SENSO
R
25
TA
NK
24 SENSOR 23
OUT
D
O
OR
22 SENSOR 21 SY
STEM
20
(-)
19
(+
)
18 SHIELD
GND
17 B 16 A 15 SHIELD GND 14 W 13 R 11 T
ANK
12 THERMOS
TA
T
28 B 27 SHIELD GND
CASCADE
ENABLE
A B
A B
A B
BU
ILDING
MANAGEMENT SYSTEM LOUV
E
R
PROVING SWITCH TA
N
K
THERMOST
A
T
EXTERNAL CONTROL
SY
STEM SENSOR
TST2032
OUTDOO
R SE
N
S
OR
TST2303
TA
N
K
S
E
N
S
O
R
TST2032
SHIELD
SHI
E
LD
FROM PRE
V
IOUS BOILER
T
O
NE
XT
BOILER
SHI
E
LD
M
O
DULE 2
MODULE 1
Figure 7-3 Low Voltage Field Wiring Connections
38