LAARS NeoTherm LC NTH (Sizes 1000-1700 MBTU/h) - Installation Manual - Manual (Page 6)

pg 6 of 6
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583
Headquarters: 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355
1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
www.Laars.com
Litho in U.S.A. © Laars Heating Systems 1404 Document 7025B
E23450
24V
8 7
W BK
12
0V
a
C
VarI
NEUT
RAL
24V
+
Y B
L/
W
B
VarI
5
BK
8
B L/W
HOT NEUT
RAL
SU
PP
LY
CUSTOmer SUPPLI
eD
PUmP reLaY
120 VaC
1/4"
Fe
m
BK
VarI
W
PrI
m
e
NeOT
Herm 1700 mBT
U
/H UNIT
S
8
BOILer
7
B
a
TB5
NeOT
Herm 1000 mBT
U
/H UNIT
S
6 5 4 3 2 1
BK
W
B
L/W
maLe
FIe
LD
W
Ire
#14
2NDarY
SeC ONDarY GaS Va LVe
#11
TB4-2
TO PCB
BK
120V
B
L/W
CONFIGUraTION
m
SPLIC
e
3
8
7
5 1
Cr1
BOILer
W
24V
TB4 N
eU
+2
4Va
C
BLr
TB3
B
L/
W
H
#
1
+120
BLr
TB5-3
Ne
U
BLr
TB5-4 BLr
BL/r
m
TO
m
F
PCB TB1 -2
DeTaIL D
CUS
TOme
r
m
De
TaIL
C
m
PrI marY
F
Ga S Va LVe
TY
PI
C
a
L
SI
NG
Le
B
U
r
N
er
B
O
IL
er
#12 BL/r
#10 BL
#11 BL
Br
re
D 1/
4"
B
L/W
TO PCB
Br
2N Da rY
F
TB4-4
DeT
aI
L F
GaS Va LVe
GaS VaLVe
2N Da rY
1
BL
re
D 1/
4"
maLe
Fe
m
GaS VaLVe
Pr ImarY
Ye
L #
8
5
#3
N
#2
1/4"
BLUe
FIELD WIRING: VF
D ANALOG IN
PU
T A
N
D
T
H
ER
M
IS
TO
R W
IR
IN
G
0-
10V
(-
)
0-
10V
(+
)
4
3
21
4
3
21
See
N
O
Te
4
ON Ca0099
TB2
(+2 4V)
#13
#12 BL/r
#10
4
32
r
eLa
Y TO C
LOSe C
ON
Ta
C
TS FOr
220/240Va
C
TB
5-
3&
4 TO eN
er
GIZe
a COIL ON CUS
TOme
r
SU
PP
LIe
D BY
CUS
TOme
r
4.
CONFIGUraTION
TY
PI
CaL
TW
O
BUrNe
r
BOILe
r
De
TaIL
B
CONNe
CTION
TYPIC
a
L TH
er
m
ISTOr
DeTaIL C
0039
PINS
39-
00-
TH
er
m
ISTOr
F
#11 BL
Fem
a
Le
NeOTHerm NT 1000
TB4-4
TO PCB
GaS VaLVe
Pr ImarY
ITem
e2346400
See N
OTe 4
Bl/r #13
#13
TB4
BL/r
#4 Y
#5
Y #6
Y #5 Y #6 Y #4
NN
NN
TB2
4
321
TB6
Y
2 (+
)
1
3 2 1 3 2 1
(-)
4-
20ma
4-
20ma(
+)
BL
PrI marY GaS VaL Ve
PCB e
NCLOS
Ure
HON eYWeLL J5- 2 (Pr I)
HON eYWeLL J5- 2 (SeC )
(OP
TIONaL)
0-
10V
DC/
INP
U
T
aNaLOG
BO
IL
er
PUm
P
(CUS
TOme
r)
(CUS
TOme
r)
N/O N/C COm
VFD
1/4"
Fe
m
P/N LaarS-e2345000
D
IJ
IT
IZ
eD
P
O
W
er
TB1
TB3
TB5
24Va
C
10K TH erm ISTOr
10K TH erm ISTOr
INLeT TemP SeNSOr
4-
20ma(
-)
LeD1
4
BL #11
OUTLeT TemP SeNSOr
#7
DK BL/ YeL # 9
PCB
BLUe
Te
rmINaL BLOCK
FLOaTING
D
K
B
LU
/Y
eL
YeL
FOr 1
20
VaC V
FD P
UmP
S THe
CUS
TOme
r
{
WIre
S He
re
2
X
TO
P
r
O
Te
C
T
Or DeTaIL e See D
eTa
IL D
BL/r
m
F
NeOTHerm NT 1700
De
TaIL
a
2NDarY
GaS Va LVe
mO
Le
X
1/4"
NP
T
TB4-4
TO PCB
BL
GaS Va LVe
NeOTHerm NT 285-850
re
D 1/
4"
maLe
CONFIGUraTION
TY
PI
CaL
TW
O
BUrNe
r
BOILe
r
TB4-2
TO PCB
TB4-2
GaS VaLVe
WIRE -
10
V
D
C
OR 4
-2
0 MA AS WIRE D
IAG
RAM IND
IC
A
TES. IF
0
-1
0 V
D
C
IS U
SED
TH
EN
5.
JU
M
PE
R R
EM
A
IN
S O
N
J
P4
. I
F 4
-2
0 M
A
IS
U
SE
D
T
H
EN
J
UM
PE
R M
US
T B
E M
O
V
ED
T
O
J
P5
.
2/
C #18 AWG S
HI
EL
DE
D CABLE
#12
BL
NEUT
RAL
B
BOILer
#10
CrImP
PrI
m
e
24V
+
aS
P
er
INS
TrUCTIONS
NOTe
D IN maNUaL
7
WILL WIre DIreCTLY TO BOILer TB5-3&4 WILL USe LaarS 120VaC FrOm BOILer
PO
W
ere
D BO
IL
er P
Um
P
TYPICaL LaarS 220/240VaC
DeTaIL e
FOr 2
20
/2
40
VaC V
FD P
UmP
S THe
CUS
TOme
r
re
LaY
FIe
LD WIre
D
1 2 3 4 6 5
PU
mP
TB5 a
F
PO
W
er
eD
B
O
IL
er
P
U
m
P
TY
PI
CaL LaarS
1
20
VaC
PU
mP
BK W
G
BOILer
1 2 3 4
C
O
N
N
eC
TO
r
6
FIeLD WIreD
TB5 a
#13 BL/r
PrI
m
e
B
L/
W
Y
NOTES:
0-10VDC O
UT
PUT
S
HO
W
N.
FO
R 4-20m
a O
UT
PUT
CO
NNE
CT
1. O
TH
ER
2
C
O
N
N
EC
TIO
N
S ON
T
B3
TB6 IS ALARM CONTACT RELAY F
O
R PCB
2.
FA
C
TORY
D
EL
TA T SETTING
= 2
0
F
3.
US
e He
aT S
HrINK
TUBe
(P
rOV
IDe
D)
BLUe
FI
eLD
TO PCB
BL
PrIma rY
GaS Va LVe
REV D C
B
A B C D
1
2
3
4
5
6
7
8
7
6
5
4
32
1
DE
C
IM
A
LS
.X
X
.0
3
RE
PRO
DUC
ED,
T RA
N
SF
ERRE
D T
O
O
THE
R DO
C
UM
ENT
S,
US
ED
O
R
TITL
E:
S
BY
L
A
A RS
H
EA
TIN
G
S
YS
TE
M
S C
O
.
8
DWG NO. SH
REV
.
E23450
IN
TE
N
D ED
SIZE
:
1 B
JS
RE
V
IS
ION
S
REV. CH
AN
GE:
APPR
EN
G R A
PPR
ECN
D RA
FT
JS
SOFT
WA
RE
PURPO
SE
E
XCE
PT
A
S S
PE
C
IFICA
LL
Y A
UT
HO
RIZE
D
IN W
RIT
ING
OT
HE
R C
HA
N
G
ES
T
O T
HE
DI
A
G
RA
M.
B
14-026N
A
H 4/
25/
14
B
CHE
C K
DI
A
G
RA
M
D
IS C
LOS
ED
TO OTH
ER
S F
O
R MA
N
UF
A
CTU
RI
N G OR
A
N
Y OTH
ER
V
FD PRI
N
TE
D CI
RCUI
T BOA
RD WI
RI
NG
1/
8"
A
DDE
D N
T 1
70
0 I
N
FORMA
TION
A
N
D A
V
A
RI
ET
Y OF
D
E
234
50
SH
EET
1
O
F 1
DWG.
N
O :
FRA
C
TIO
N
S
PR
O
PR
IE TAR
Y TO
L
AAR
S H
EATI
N
G
SYSTE
M
S C
O
. AN
D SH
AL
L N
O
T B
E
1
.01
0
D
ECI
MA
LS
.XXX
.1
CJT
2
/4
/1
2
FINI
SH
MAT
ER
IAL
:
TO
LE
RA
NCES
A
RE:
DEC
IM
A
LS
.X
D
IM
EN
SIO
N
S A
RE IN
IN
CH
ES.
UN
LE
SS
OT
HE
RW
IS
E
SPE
CI
FIE
D
:
A PPR ENG
R
D RA
FT
AP
PR
OV
ALS
TH
IS DO
CU
ME
NT
A
N
D T
HE
INFO
RMA
TIO
N CO
NT
A
INE
D HE
RE
IN A
RE
A NG
LES
DO N
OT
S
C
A
LE
DRA
W
IN
G
.
TH
IRD A
N
G
LE
PROJE
C
TION
.
S
C
A
LE
: NO
NE