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Lochinvar 000 Manual De Usuario

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79
Wiring Diagram 
(continued)
1,500,000 - 1,300,000 - 2,000,000 Btu/hr Models
50 Hz Limit 
Resistor
1.2K Ohm
Y
TO VFD 
TERMINAL 
NUMBER 15
TO VFD 
TERMINAL 
NUMBER 14
OPTIONAL 50  Hz LIMIT RESISTOR
P
OPTIONAL
WARNING:
To avoid possible 
shock hazard, disconnect power 
before servicing.
OPTIONAL
BK
BR
J
3
5
1
4
1
3
1
2
1
4
3
2
1
G
ND
O
H
M
O
U
T
O
H
M
O
H
M
O
H
M
V/
m
a
V/
m
a
1
2
3
1
2
1
2
1
2
1
2
3
4
5
BYPASS 
SENSOR
OUTLET
SENSOR
INLET
SENSOR
ENABLE
SWITCH
OA
SENSOR
2
1
CHASSIS 
GROUND
RUN /STOP SWITCH
2
1
2
1
2
1
2
1
6
5
78
9
1
0
11
OA SENSOR
INLET SENSOR
BYPASS SENSOR
F2
F1
-
+
IGNITION
MODULE
24VAC GAS
VALVE
Louver
Proving Sw
AIR
SWITCH
Low
Gas
High
Gas
FLOW
SWITCH
Blocked
Drain
FC-FC+
S1
L1
L2
S2/FS
L
IN
E
N
E
U
T
R
A
L
11
10
9
6
4
3
2
1
N/A
TH
PI
LV1
PS
FF
M/S
FF
HOT
SURFACE
IGNITER
LBL90002 REV A
GY
BK
W
120VAC GAS 
VALVE
Y
R
R
GAS VALVE RELAY
NO
COM
NO
COM
NO
NO
NC
C
NC
NO
C
NO
NC
C
NO
NC
C
NO
NC
C
EXT. GAS VALVE
Y
R
LV2
RESET
8
7
5
MV
5
4
2
1
O
O/
BK
O
O
O
PU
PU
PU
R
R
R
O
BL
GY
M
T
BR
T
W
BK
W
BK
COMMUNICATION
CABLE #1
REAR
COMMUNICATION 
CABLE CONNECTION
CONTROL PANEL
COMMUNICATION 
CABLE CONNECTION
COMMUNICATION
CABLE #3
BYPASS
VALVE
R
W
BK
GY
GY
GY
GY
NO
COM
LOUVER
RELAY
LOUVER 
RELAY 
CONTACTS
BLOWER 
ASSEMBLY
R
O
T
A
T
IO
N
R
O
T
A
T
IO
N
STATUS 
LED
BK
BK
Y
Y
Y
BK
Y
BR
BL
Y
BL/BK
BL
IGNITION 
RESET
BL
AT OPEN
BK
BK
R
OPTIONAL
VENT VALVE
OPTIONAL
OPTIONAL
STD.
3
2
1
4
EXT. GAS
VALVE
UVERS
LOUVER 
CONTACTS
COMMON
CLOSED INPUT
OPEN INPUT
BK
W
120VAC
OUT
INLET 
SENSOR
2
1
1
2
3
1
2
3
(2) Where possible, switches and circuitry are shown in power off state.
NOTES:
(3) When replacing wiring, use wire of equal or higher temperature and gage.
(4) Schematic shows electrical connections only.  Please refer to wiring diagram in   
owner's manual for routing and pin-outs for all connector blocks.
(1) 
WARNING:
To avoid possible shock hazard, disconnect power before servicing.
BR
INPUTS
1
1
1
1
1
BK
W
Y
BR
BL
R
NOTE:
DO NOT DISCONNECT 
CABLE FROM BLOWER.
G
OUTLET SENSOR
COMMUNICATION
CABLE #1
1
PU
PU
PU
PU
Y
PU
PU
COMMUNICATION 
CABLE  #2
PU
W
W/BK
(5) Pump delay is standard on water heaters.
Y
OR
TOGGLE 
SWITCH
MANUAL
OVERRIDE
C 1
2
Y
4
3
2
BK
W
R
R
BK
W
BLOCKED 
DRAIN
PU
CO
M
MO
N
T
BR
BL
O
C
KE
D
O
PE
N
1
2
3
J3
1
2
3
P
U
24 VAC
O
NC
C
O/BK
PU
BL
Y