Lochinvar 800 - Manual (Page 48)

Installation & Operation Manual
48
8
Field wiring
AU
X
. D
E
V
IC
E
PI
LO
T
S
U
P
P
LY
24
V
A
C
GN
D
AU
X
. D
E
V
IC
E
PROV
IN
G
GA
S PR
ESS
U
R
E
SW
IT
C
H
FL
O
W
SW
IT
C
H
A
L
ARM
CO
N
T
A
C
TS
RU
N
T
IM
E
CO
N
T
A
C
TS
SY
STE
M
SE
N
S
OR
DH
W
T
A
N
K
SE
N
S
OR
OU
T
D
OOR
SE
N
S
OR
S
H
IE
L
D
GR
O
U
N
D
0-
1
0
V
D
C
E
X
TE
R
N
A
L
G
N
D
C
O
N
T
R
O
L
DH
W
T
H
E
R
MO
S
T
A
T
R W
R
O
OM T
H
E
R
MO
S
T
A
T
/
ZO
N
E
C
O
NTRO
L
A B S
H
IE
L
D
GR
O
U
N
D
SEQU
E
N
C
IN
G
LOW WATE R
CUTO FF
CN
1
CN2
CN3
CN
4
CN
5
C
NO
NC
C
NO
NC
AUX
. D
EVIC
E
RE
L
A
Y
HIGH
GAS
PR
ESSU
R
E
SW
ITCH
(500 ON
L
Y
)
LOW
GAS
PR
ESSUR
E
SW
ITCH
(5
0
0
O
N
L
Y
)
FL
OW
S
W
IT
C
H
T
A
NK TH
ERM
O
ST
A
T
W
A
LL
T
H
ER
M
O
ST
A
T
/
ZO
NE
CON
T
RO
L
SY
STE
M
SU
PPL
Y
SEN
SOR
OUTDOOR
SENSOR
BU
ILD
IN
G
MA
NA
G
M
E
N
T
SY
STE
M
AUX
. D
EVIC
E
PROVIN
G SW
ITCH
CO
M
NO
A
A
B
A B
SH
IEL
D
SHIEL
D
FR
OM
PREVIOU
S
BOILER
TO NE
X
T
BOILER
(AU
X
) D
H
W
SENSOR
LOW
W
A
TER
CU
T
O
FF
Figure 8-3 Low Voltage Field Wiring Connections