Lochinvar 000 User Manual
78
Wiring Diagram
1,500,000 - 1,300,000 - 2,000,000 Btu/hr Models
8888
PROG
VOLTS
AMPS
HERTZ
RUN
FWD
REV
VFD
ENABLE
J3
E
G
ND
GN
D
A1
-3
O
H
M
G
ND
G
N
D
22V
D
C
O
U
T
E
-BUS
D
I-
4
G
N
DD
I-
3
D
I-
2
GN
D
2
OU
T
3
O
U
T
5
O
U
T
1
O
U
T
4
O
U
T
6
O
UT
7
O
U
T
E
-B
U
S
JA
C
K
A
1-
1
O
H
M
A
1-
2
O
H
M
A
1-
4
O
H
M
A
1-
5
V/
m
a
A
1-
6
V/
m
a
D
I-1
24
VA
C
24
VA
C
C
O
M
8
O
U
T
LED
Inlet Water Sensor
Bypass Water Sensor
S/S
OA Sensor
LowAir /Block Drain
Hi-LoGas/
Louver
Outlet Water Sensor
Flame Failure
Low Wtr Flow
Gas Valve
HSI
24VAC
HSI
1
2
2
3
4
5
6
7
8
9
1
1
2
3
GY
GY
BL
31
30
29
2
82
6
2
7
25
24
2
3
2
2
21
20
19
18
17
1
6
Back
Select
HI-LIMIT
NO
COM
NC
BL/
BK
COM
NC
Y
BL
NO
COM
NO
PU
HI-LIMIT ALARM RELAY
ALARM RELAY
COM
COM
NO
COM
PUMP RELAY
120
VAC
CIRCUIT
BREAKER
OVER TEMP
INDICATOR
ALARM
CONTACTS
ALARM
24VAC OUT
ALARM
INDICATOR
R
PU
PU
BL
BL/BK
BL/BK
BL
PUMP MOTOR
M
MO
DE
TIM
E
BA
SE
MU
X
ADD
R
MA
N
N
UA
L
OV
E
E
R-
RI
DE
SI
G
IN
-
SI
G
IN
+
24
V P
w
w
r
Co
m
m
mA
O
O
u
t
Vo
lts
lts
O
u
t
Vo
lts
Ou
t
mA
Ou
t
Co
m
24V
Pw
r
SIG
+
SIG
-
PWM
CONV.
COMMAND DISPLAY
24 VAC
VFD POWER RELAY
NO
COM
G
W
BK
BK
G
W
P
NO
C
POWER SWITCH
N
Y
T
Y
EBUS
EBUS
EARTH 24VAC 24VAC
G
Y
BL
W
G
BK
BK
BK
W
BK/W
BK
BK/W
BK
BK
BK
BL
T
PU
O
G
Y
PU
Y
BL
PU
PU
BL/W
Y
Y
BL/W
BL/W
O
O
BL
BR
W
GY
PWM/4-20ma
Dial Alarm
Float Close
Float Open
Ignition Enable
n/a
Pump Relay
n/a
CONTROLLER
CHASSIS
GROUND
GROUND
Y
W
SILENCE
W
BK
Y
BL
BL
LOW VOLTAGE
TRANSFORMER
BL/BK
120VAC
15AMP
120VAC
15AMP
TW
O
1
5
A
M
P
CI
R
C
U
ITS
O
R
O
N
E
3
0 A
M
P C
IR
C
U
IT
UNIT POWER
PUMP
POWER
CHASSIS
GROUND
GROUND
CHASSIS
GROUND
GROUND
IGNITION RELAY
FLOAT
R
R
R
R
BYPASS COMMON
R
STD.
STD.
BL
R
BL/W
BL
BL
BL
1
4
5
6
2
3
REAR WIRING
CONNECTIONS
3
2
1
3
2
1
4
5
LOUV
24VAC ALARM
OUT
BYPASS
VALVE
OPTIONAL
2
1
ALARM CONTACTS
PU
BK BL
Y
OPEN
COMMON
CLOSE
BR
T
PU
PU
Y
BL/W
OA
SENSOR
G
INPUTS
1
DIP SWITCH #5 ON
PUMP
BL
BL
P
Y
1
2
3
NOTICE:
FACTORY
CALIBRATED .
DO NOT
ADJUST.
SWITCH
BR
BK
W
BL
GY
GY
3
2
7
ALARM
DRIVE
1
1
1
1
OUTPUTS
W
FLOAT CLOSE
W/BK
1
2
BK
BK
3
2
1
L1
L2
T1
T2
T3
S
N
K
N
K
S
R
C
R
C
LINE
NEUTRAL
GROUND
01
02
14
11
BK
W
G
GND
DIP SWITCH IN
DOWN
POSITION
T
3
T
2
T
1
1
15
Y
PK
P
GY
W
GY
T
O
FAN
G
W BK
J3
5
4
6
1
2
3
O .C.
J
1
J 2
3
2
1
J 4
P
RESET
RESET
CHASSIS
GROUND
GROUND
O
GND
PU
G
PU
TEST
SWITCH
LWCO
PROBE
T
~~~~~~~~
~~~~
O/
T
T
P
Y
TO 1.2K
RESISTOR
TO MANUAL
O’RIDE SW
RESISTOR
TO MANUAL
O’RIDE SW