LAARS MagnaTherm MGV - Installation, Operation and Maintenance Instructions - Manual (Page 42)

LAARS Heating Systems Page 38
COND
EN
SA
TE
R1
4
78
COM
1
C OM
2
12
3
6
5
D IS
PL
A Y
C
B
A J3
MB1
110
VA
C
24
VA
C
J5-1
IN
TERLO
C
K
(+)
(-)
12
43
2
1
43
2
1
43
2
1
3 1 2
VT
B2
VT
B6
VT
B3
VT
B5
VT
B4
VT
B1
24
VAC POW
ER
VARI
PRI
ME
COM N/
C
N/
O
(O
PT
IO
NAL
)
ENCLOSURE
4
HSI
R-4
PI
LO
T
J1-3
FL
A
M
E
ROD
MAI
N
2 1
L3 L2 L1
BLOW
ER
MOTOR
C
IRC
UI
T B
RE
A
KE
R
C O N TA
C TO
R
R2
L1
L2
L1
L2
T3 T2
L1 L2
T1
V
FD
+
-
110
VA
C
220
VA
C
FUSE
M
AI
N S
W
ITC
H
R2
CONV
EN
IE
NCE
RE
CE
PT
A CL
E
FUSE
17
BLO
C
K FLUE
SW
ITC
HES
V
FD TB
1-
44
TB
1-
45
1
2
5
6
25
4
11
13A
13B
13C
14
30
16
*
L1
120H
120N
BL
O
C K
FL
UE
SW
ITC
HES
LWC
O J7-2
HI
GH
GA
S
PR
ESSU
RE SW
_ _
+ +
J6-
2
J6-
1
OPTI
ONAL
AD
D ITI
ONAL
HIGH
LIM
IT
J7-
5
THERM
A
L CUT-OUT
PR
O
BE
LOW
GA
S
PR
ESSU
RE
SW
J7-3
IN
LE
T
SEN
SO
R
O
UT
LE
T
SEN
SO
R
R4
TB1-29 TB1-30
M
A
N
UA
L
RESET
HI
G
H
LI
M
IT
C O
ND
ENS
AT
E
R3
J7-4
J7-
6
J5-
3
J4-
10
J5-
2
UNI
T TEM
PERATURE
SENSO
RS
J5-
7 J4-
8
P1
P2 2
J8-
2
J8-
3
J8-
1
V
A
RI
PRI
M
E PUM
P C
O
N
TRO
L
MOU
N
TE
D
ON
H
YD
RO
NI
C
U
NI
TS
O
NL
Y
VFD
TERM
5
VFD
TERM
2
120 N
EUT
RA
L
(V
AR
IP
RI
M
E O
NL
Y)
VTB
3-4
VTB
3-3
MB2-
B
J10-1
-
J10-8
R3
VARIPR IM E
ONLY
- + - + +
4-20
m
a
(+
)
+ -
J10-5
0-10VDC
(+
)
45 44 43
4-20
ma
0-110VDC
(-
)
J10-6 DI
SP
LA
Y
#6
MB2-
A
MB2-
C
J10-3
{
PUM
P
0-10V DHW SEN
SO
R
{
C
OM
2
MB
2
REM
O
TE
RESET
{
30 29 31 32 33 34
DISPLA
Y
#4
35 36 37 38 39 40 42 41
TO
D
FEED
J10-2 J6-8 J6-7
AL
AR
M
{
27 28 26 25
+
24 23 22 21
TB1-4A
20 19 18 17 15 16
FIELD CONNECTIONS
{
TT
{
ANAL
O
G
{
OU
TD
OOR
SY
STEM
{
DHW PUM
P
{
SY
STEM
PUM
P
BO
IL
ER
PUM
P
{
J8-3 TB
1-13 J8-6
J8-7 J8-11 J8-12
J4-2 J4-4 TB1-4A TB1-4A J4-6
V
FD
-1
6
V
FD
-1
7
*
*
J4-
2
J4-
4
J4-
6
TB1-
4A
TB1-
4A
J6-3
R1
120V+ 120V- 120V- 120V+ 120V- 120V+
FL
O
W
SW
ITCH
TB1-
35C
TB1-
34C
TB1-
33C
OUTLET WA
TE
R
IN
LET
WA
TE
R
J8-
8
J8-
9
J8-
4
J8-
10
J8-
5
3
2 4
1
STACK
J9-
4
J9-
5
J9-
6
3
2 4
1
BO
IL
ER
PUM
P
SYSTEM PUM
P
DHW PUM
P
TB1-
4A
NOT
E:
W
HE
N
AN OP
TIONAL
COMP
ONE
N
T I
S NOT
P
RE
SE
N
T,
1. TH
E SI
G
N
A
L M
UST
BE JUM
PED
2.
=
U
SED
O
N
S
IZE 4.
0 M
M
Bh
O
N
LY
J5-
6
J10-7 J9-1 J9-2
DISPLA
Y
#5
J10-4
2 1
L2
BY
LA
A
RS H
EA
TIN
G SYSTE
M
S.
220V
E2
360
5
D C B
A B
C D
1
2
3
4
4
PR
OPR
IE
TA
RY TO LA
A
RS H
EA
TIN
G SYSTE
MS A
N
D
SH
A
LL N
O
T B
E
SH
1
/8"
D
ECI
M
A
LS
.X
X
3
2
1
FMA
56A
DWG
NO.
E236
05
RE
V
ECN
DRAFT
-
AL 2-5-1
4
RE
V
IS
IO
N
S
REV
.
CH
A
N
GE:
A PPR
ENGR
A
PPR
CH
ECK
INIT
IA
L REL
EA
SE
SOFTW
A
RE
TO
LE
RA
NCE
S
A
RE
:
-
14-002N
-1
3
JM 2-5-1
4
S
C
A
LE: NO
NE
INT
ENDED S
IZE
:
MA
TERIA
L:
DW
G
. NO
:
C
SH
EET
1
OF 1
REV
.
A
PPROV
A
LS
DR
AF
T
ENG
R
TITL
E:
REP
RO
D
UCED
, T
RA
N
SF
ERRED
T
O
O
THER D
O
CUM
ENT
S,
US
ED
O
R
DISCLOSE
D T
O OT
HE
RS
FOR
MA
N
UFA
CT
UR
IN
G OR
A
N
Y OT
HE
R
DIM
ENS
IO
NS
A
RE IN INC
HES
.
FIN
IS H
NA
JM
2-5-1
4
NA
1
S
A PP
R
.0
10
PU
RPOS
E EX
CEPT
A
S S
PECIFICA
LLY
A
UT
HORIZ
ED IN WRIT
ING
AL
2-5-1
4
UN
LESS OT
HE
RWI
SE SP
ECI
FIE
D:
DO
NO
T S
C
A
LE DRA
W
ING.
TH
IRD A
N
GL
E PROJECT
ION.
DECI
MA
LS .X
.1
.0
3
D
EC
IM
A
LS
.XXX
TH
IS
DO
CU
M
ENT
A
N
D T
HE INF
O
RM
A
TIO
N CO
NT
A
INED HEREIN A
RE
A
N
GLES
FRA
C
TIONS
LA
DDER
DI
A
G
RA
M,
MGT
-
Figure 20. 220 Volt Single Phase Ladder Diagram