Lochinvar Efficiency-Pac EW 150 -- 300, Installation & Service Manual

Page: 44 / 48

44
Installation & Service Manual
TR
A
N
S
F
O
R
M
E
R
ON-OFF
SW
IT
C
H
L
O
W AIR
NO NC
C
PUMP
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R1
W1
A
X
SWI
T
C
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TERMI
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AL
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T
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R
BLOWER
BC
LIM
IT
GAS V
A
L
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IGNI
T
ION
MODULE
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BK/W
BK/W
W
GR
W
GR
BL
OR/R
BL
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R/W
R/OR
R/BK
T
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Y
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GR
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BK
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BR
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IRE
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LBL20
017 REV
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R2
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Y
GY
GY
BURNER GR
OUND
GR
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R/W
BL
W
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NO
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*
FLOW
S
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H
PUMP
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PRO
T
EC
T
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24 VDC
OPT
. AMRHL
OPT
. FMR
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L
*
R/BK
R/W
BL/W
R/BK
OR
OR
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IF
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IPPED
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:
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IN
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M
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ER
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OPT
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A
L
AM
RH
L
RE
QUIRES
M
A
X
ST
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SET
@ 2
4
0°F
INL
E
T
SEN
S
OR
BK
BK
TA
N
K
SEN
S
OR
8 7-C 6-NO 5-N
C
1
2-C
3-NO 4-N
C
*
1 4
3 6
2 5
IF NOT
EQUIPPED
WI
T
H
L
W
C
O
CONN
ECT
T
O
"
R
1".
ELSE
CONNEC
T
T
O
LW
C
O
"
C
O
M
".
BL
BL
OR
Y
Y
BL
BL
BL
BR
BR
ALARM BEL
L
ALARM *
24V RE
L
A
Y
TI
M
E
D
E
L
A
Y
R
E
L
A
Y
BL
BL
BL
BL
SPLIC
E 5
Y
Y T
Y
*
IF NO
T
EQUIPPED
WI
T
H
L
W
C
O
WIR
E
S T
IED
OFF & C
APPED
IF NO HI
GH FIRE GAS V
A
L
V
E
WIR
E
S
T
IED OFF & C
A
PPED
THE
R
MO
ST
A
T
*
ALARM CON
T
AC
T
S
DI
SC
O
N
NE
CT P
O
W
ER BE
FO
RE
S
ER
VI
C
IN
G
UNI
T
BL
C
NO
12
3
Y
OR
R
R
24V RE
LA
Y
TERMIN
AL
STRIP
*
LOU
V
ER
CO
NT
ACTS
WAT
E
R
H
E
A
T
E
R
T
P
OP
T
IONA
L
E
Q
UIPMENT
W
IRING
BL/W
2 1
(+)
(+)
USE E
L
ECTRICA
L
CONNECT
ION
1
&
2
2
1
RE
SET
GND
RES
E
T
P
J4
1
2
3 J2
J1
O.
C
.
3 2
1
6 4
5
J3
T
G
24
VA
C
LW
C
O
BL
/BK
OR
24
V
Y
BL
PRPR
OR
OR
OR
BUTT
ON
TEST
PROBE
T
T
RE
SET
PR
PR
7
Diagrams
Figure 7-2 Wiring Diagram