LAARS NeoTherm NTH (Sizes 285–850 MBTU/h) - Installation Manual - Manual (Page 4)

pg 4 of 4
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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 1405 Document 7031
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
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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
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PPR
ECN
D RA
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JS
SOFT
WA
RE
PURPO
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E
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PT
A
S S
PE
C
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HO
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D
IN W
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ING
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14-026N
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14
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TO OTH
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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
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DWG.
N
O :
FRA
C
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N
S
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Y TO
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S H
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SYSTE
M
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AL
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CJT
2
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/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
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S
C
A
LE
DRA
W
IN
G
.
TH
IRD A
N
G
LE
PROJE
C
TION
.
S
C
A
LE
: NO
NE