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Lochinvar
Water boiler
80 - 285
User Manual
Lochinvar 80 - 285 User Manual Page 49
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Installation & Operation Manual
49
8
Field wiring
(continued)
AUX. DEVI
CE
PILOT SUPPL
Y
24V
AC
GN
D
AUX. DEV
ICE
PROVI
NG
GAS PRESSURE
SW
ITCH
FLO
W
SW
ITCH
ALAR
M
CO
NTACT
S
RUNTI
ME
CO
NTACT
S
SYSTEM
SENSO
R
DHW
TANK
SENSO
R
OUTD
OOR
SENSO
R
SHI
ELD GR
OUND
0-1
0VDC
EXT
ERNAL
GND C
ONTR
OL
DHW THERM
OST
AT
R
W
RO
OM TH
ERM
OST
AT /
ZON
E C
ONTR
OL
A
B
SHI
ELD GR
OUND
SEQUENCI
N
G
LOW W
ATE
R
CUTOFF
CN1
CN2
CN3
CN4
CN5
AUX
. DEVICE
RELA
Y
FLOW
SW
ITCH
TA
N
K
T
H
E
R
M
O
S
TAT
WALL THERM
OST
A
T /
ZONE CONTROL
SYSTEM SUPPL
Y SEN
SOR
OUTDOOR SENSOR
BUILDING
MANAGMENT
SYSTEM
AUX
. DEVICE
PROVING SWITCH
COM
NO
A
A
B
A
B
SHIELD
SHIELD
FROM
PREVIOUS
BOILER
TO
NEXT
BOILER
(AUX) DHW SENSOR
LOW
WA
T
ER
CUTOFF
Figure 8-3
Low V
oltage Field Wiring Connections
1
2
...
44
45
46
47
48
49
50
51
52
53
54
...
75
76
Models: 80 - 285
1
Starting Serial #H07H10040039
1
Hazard definitions
2
Contents
2
Please read before proceeding
3
Models 80 - 210
5
Model 285
6
Knight Boiler
7
I=B=R Rating
7
Other Specifications
7
1 Determine boiler location
10
(continued)
11
2 Prepare boiler
13
3 General venting
14
General venting (continued)
15
4 Sidewall direct venting
21
Field Supplied Option)
23
Prepare wall penetrations
23
Description and usage
25
5 Vertical direct venting
28
Prepare roof penetrations
29
Termination and fittings
29
6 Hydronic piping
32
Circulator sizing
33
Hydronic piping (continued)
35
7 Gas connections
42
Gas connections (continued)
43
8 Field wiring
46
8 Field wiring (continued)
47
9 Condensate disposal
50
10 Start-up
51
10 Start-up (continued)
53
11 Operating information
57
Boiler temperature regulation
59
Sequence of operation
61
Knight boiler control module
63
Status Display Screens
65
12 Maintenance
69
12 Maintenance (continued)
71
13 Diagrams
74
13 Diagrams (continued)
75
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