LAARS NeoTherm NTV (Sizes 150–850 MBTU/h) - Install and Operating Manual - Manual (Page 52)

Page 48 LAARS Heating Systems
Figure 44 - Wiring Diagram, All Sizes (with standard EMEA display) H2354300B
BO
ILE
R
PU
M
P
GN
D
BL
K
W
H
G
N
X
01
1 2
3
12 11
10 9
8 7
6 5
4
7
6 5
4
X
07
1 2
3
8
PRESSUR
E
SWITCH
BR
O
R/
W
H
BR
OR/WH
N C C
O
M
THERM
O
-F
USE
(ON
SOME
MODELS
)
GY/W
H
MB
1
MB
2
EC
O
M
B
A
V
D
C
B
GN
D
THE
RM
O-
FU
SE
O
PT
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NA
L
SWIT
CH
USE
D
ON
SOME
MO
D
EL
S.
IF
SWIT
C
H
IS
NOT
INSTA
LL
ED
IN
TH
IS
LOC
A
TION, T
H
E
TERMINA
L
JU
M
PER
SH
OU
LD
B
E
IN
P
LA
CE
1
O
R
BL
GY/WH
DKB/Y
TO
TB4
J6
-8
J6
-7
J6
-3
SE
E
TA
BL
E
2
O
PT
IO
NA
L
SWIT
CH
USE
D
ON
SOME
MO
D
EL
S.
IF
SWIT
C
H
IS
NOT
INSTA
LL
ED
IN
TH
IS
LOC
A
TION. T
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E
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JU
MPER
SH
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IN
P
LA
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J8
-5
J8
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J8
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PUM
P
SY
S
DH
W
FACTORY INSTALLED OPTION FOR 500 -850
CSD-1 ONLY
TABL
E
2.
GAS
VAL
V
E
W
IRE
COL
O
RS
TA
BL
E
1.
C
OLOR
ABBREV
IA
TI
ON
S
N
O
CO
M
V
T
BLK/
Y
G
R
BL
K
TAN
/R
TN
/B
L
TN
/B
LK
W
H
TN
/B
RN O
R
BR
N
BR
N
PUM
P
BYP
A
SS
RE
LA
Y
7
8
5 3 1
2 4 6
R2
MS-
1
MS-
2
GY/W
H
SYSTEM SENSOR
AQUASTAT
OPTION
BLK/OR
DHW TEMP SENSOR
ALARM
WH/OR
WH/GY
OR/BLK
BL/Y
BL
TO
J
6-
8
TO
J
6-
7
ALARM
TB
6
FI
ELD
CONN
EC
TI
ON
S
WH & GR
Y
BLK/O
R
O
R/BL
K
J10-
8
J10-
7
7
3 2
SE
E
TA
BL
E
2
G
N D
GA
S
V
A
LV
E
4 1 2 3
PRESSUR
E
SWITCH
O
R
PU
R
OR
PUR
SP
A
RK
IG
N
IT
O
R
J1
-3
J1
-2
G
Y
2
1
2
1
6 1
1
6
1
6
6
1
1 2
2 1
TO GA
S
V
A
LV
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P1
WH
W
H
DR
Y
CON
TAC
TS
O
N
LY
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EE
I/
O
MAN
UA
L
SE
C
T
5.
3
FIE
LD
O
PT
IO
N
S
OUTDOOR TEMP SENSOR
L NEUTRA
L
PUM
P
L NEUTRA
L
G
Y
C
RI
M
P
NU
T
G
R W
H
BL
K
TO
TB8
P
1
BL
K
G
Y
DK
B
G
Y
TO
TB4-P
1
TO
J4-1
0
Y
TO
TB6
P
1
TO
TB6
P
2
WH
/GY
WH
/O
R
TO
J
6-
2
WH/R/GN
GY/R
GR/VT
R
GR/BL
BL
WH/GY
TN
/B
LK
W
H
TN
TN
/Y
PU
R/
BL
K
PU
R
R/Y BR
N
BR
N/
W
H
WH
/R
TO
T
B2
PI
N
2
TO
XF
O
RME
R
W
H
TO
T
B1
PI
N
2
TO XF
ORME
R
BL
K
FL
O
W
SW
ITC
H
R
ADD'
L
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H
LIMI
T
BL
Y
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R/B
L
GR
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/GY
FIELD
IN
ST
A
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D
O
PT
IO
N
S
LO
W
WA
TE
R
C
UT
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FF
GY/R
BL
K
BL
K
Y
W
H
W
H
V T
GY/BL
Y
R
W
H
BL
K
Y
D
KB
Y
Y
TN
/R
TN
/B
L
O
R
TN
/B
RN
GY
/R
W
H /R/G
N
C
L
C L C
L
C
L
C
L
WH
GR
/R
WH
/GN
R/BLK
PK
DKB/Y
FS-
1
LT
G
N
R
R/Y
BR/WH
BR
TN/Y
TN
R
Y
WH
/R
WH
/R WH
/B
L
WH
/B
L
DKB
D
KB
FS-
2
DK
B
DKB/
Y
DK
B
WH
/B
L
PU
R/
BL
K
PU
R
R
C
O
NT
RO
L
M
O
D
UL
E
(Hon
eywell)
C
UST
O
M
ER
POW
ER
IN
PU
T
GR
WH
BLK
TB
1
110
V
"H
O
T"
TB
2
110
V
N
EU
TR
A
L
TB
3
24
V
"H
O
T"
TB
4
24
V
COMMO
N
SW
1
J4
-6
J4-1
0
J4-1
2
G
N
D
J4
-7
TB
5
BO
IL
ER
CONN
EC
TI
ON
S
J4
-5
J4
-4
J4
-3
J4
-2
J5
-1
J5
-2
SAFET
Y
CH
A
IN
J8-1
2
J8-1
1
J8-1
0
J8
-9
J8
-8
J8
-7
J8
-6
J8
-2
J8
-1
J2- 1
J2- 2
J2- 3
J2- 4
J9
-6
J9
-5
J9
-4
J9
-2
J9
-1
TB
7
FIE
LD
CONN
EC
TI
ON
S
OUTDOOR TEMP SENSOR
ANALOG INPUT -
ANALOG INPUT +
T-T OR INTERLOCK
OUTLE
T
TE
M
P
SENSO
R
(P2)
INLE
T
TE
M
P
SENSO
R
(P1)
STA
C
K
TE
M
P
(P3)
G
N
D
2
1
3
TB
8
FI
EL
D
CONN
EC
TI
ON
S
J6
-2
J6
-1
1 5
1 3
P4
P5
H
V
SP
A
RK
GN
D
TRANSFORMER
110VAC INPUT
24VAC OUTPUT
BLO
W
ER
FLA
M
E
RO
D
C
O
NDENSAT
E
LE
V
EL
S
W
IT
C
H
HI
G
H/
LO
W
G
A
S
PR
ESS
UR
E
SW
IT
C
H
500-850 CSD-1 ONLY
1
2
3
4
1
2
3
4
2
G
Y
DIS
PLA
Y
(Hon
eywell)
DIS
PLA
Y
(Hon
eywell)
LT
G
N
O
R/G
N
O
R/G
N
GY/GN
Y
Y
A
V
-
V
+
R1
BLK/
Y
BO
IL
ER
PU
M
P
IN
TERR
UP
T
JU
M
PER
S
BL
=
BLU
E
WH
=
WH
ITE
Y
=
YELLOW
O
F
C
O
NN
EC
TO
R
(IN
SE
RTI
O
N
E
N
D)
DKB
=
DA
RK
BLU
E
CL
- CL
EA
R
BR
N
=
B
RO
W
N
GN
=
GR
EEN
R
=
RE
D
TN
=
TA
N
VT
=
VI
O
LE
T
TA
BL
E
1
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LO
R
A BB
RE
V IAT
IO
NS
BLK
=
BLAC
K
LT
G
N
=
L IG
H
T G
REEN
GY
=
GR
A
Y
1.
A
LL
CO
NN
EC
TO
RS
A
RE
V
IE
W
ED
FR
OM
R
EA
R
N
O
TE
S:
O
R
=
O
RAN
G
E
PU
R
=
PU
RPLE
TA
BL
E
2
- G
AS
V
AL
V
E
WIR
E
C
OL
O
RS
G
A S
VA
LV
E
PIN
N
O
.
80-28
5
3
99-
50
0
60
0-8
50
Y
RB
Y
1
KB
LB
-
2
LB
-
BK
D
3
NR
G
A N
N
G
4
H2354300B