LAARS MagnaTherm MGV - Installation, Operation and Maintenance Instructions - Manual (Page 43)

MagnaTherm Boilers and Water Heaters Page 39
C
O
N
D
EN
SA
TE
R1
5
4
78
COM
1
COM
2
12
3
6
DI
SPLAY
AC
B
J3
M
B1
120
VAC
24
VAC
J5-1
IN
TERLOCK
1
(+)
(-)
2
2
43
1
2
43
1
2
43
1
ENCLOSURE
3 1 2
VTB2
VTB6 VTB3
VTB5
VTB4
VTB1
24VAC
PO
W
ER
VARIPRIME
COM N/
C
N/
O
(O
PTIO
NA
L)
4
HS
I
R-4
PI
LO
T
J1-3
FL
AM
E
ROD
R2
MAI
N
2 1
CI
RCUI
T B
RE
A
KE
R
C
O
N
VE
N
IE
N
C
E
RE
C
EP
TA
C
LE
120V
220V
L3
L2
L1
BL
OWER
MOT
O
R
L1 L2
T1 T3 T2
VFD
FUSE FUSE
C
O
N
TA
C
TO
R
R2
L1
T1
L2
T2
M
A
IN
S
W
ITC
H
16
17
BLO
C
K FLUE
SWI
TCHES
VFD
TB 1-44
TB 1-45
1
2
5
6
25
4
11
13A
13B
13C
14
30
*
INLE
T
OUTLET WAT
ER
J8-
8
J8-
9
J8-
4
J8-
10
J8-
5
3
2 4
1
WAT
ER
120V
120V
H
N
1
BLOCK F
LUE
SWI
TCHES
LWC
O J7-2
HI
GH GA
S
PRESSURE SW
_ _
+ +
J6-
2
J6-
1
OPT
IONAL
A
D
D IT IO
N
A L
HI
G
H
LI
M
IT
J7-
5
THERM
AL
C
UT-O
UT
PR
O
BE
LOW GAS
PRESSURE SW
J7-3
IN
LE
T
SENSO
R
O
UT
LET
SENSO
R
R4
TB1-29 TB1-30
M
ANUAL
RESET
HI
GH
LI
MI
T
CONDENSAT
E
R3
J7-4
J7-
6
J5-
3
J4-
10
J5-
2
UNIT TEMPERATURE
SE
NS
OR
S
J5-
7 J4-
8
P1
P2 2
J8-
2
J8-
3
J8-
1
VARI
PRI
M
E PUM
P C
O
NT
RO
L
MOUNT
ED ON
HY
D
RO
N
IC
U
N
ITS O
N
LY
VF
D
TE
RM
5
VF
D
TE
RM
2
12
0 N
EU
TR
A
L
(VARIPRIM
E O
N
LY)
VT
B
3-
4
VT
B
3-
3
MB2-
B
J1
0-
1
-
J1
0-
8
R3
VARIPRI ME
ONLY
- + - + +
4-20 ma (
+)
+ -
J1
0-
5
0-10VDC (
+)
45 44 43
4-
20
m
a
0-
110VDC
(-
)
J1
0-
6
DI
SPLAY #
6
MB2-
A
MB2-
C
J1
0-
3
{
PUMP 0-10V DHW SENSOR
{
COM 2
MB2
REMOTE RESET
{
30 29 31 32 33 34
DI
SPLAY
#4
35 36 37 38 39 40 42 41
TOD
FEED
J1
0-
2
J6
-8
J6
-7
AL
ARM
{
27 28 26 25
+
24 23 22 21
TB
1-
4A
20 19 18 17 15 16
FIELD CONNECTIONS
{
TT
{
ANAL
OG
{
OUT
D
OOR
SYSTEM
{
DHW PUMP
{
SYSTEM PUMP BO
IL
ER
PUMP
{
J8
-3
TB1-1
3
J8
-6
J8
-7 J8
-1
1
J8
-1
2
J4
-2
J4
-4
TB
1-
4A
TB
1-
4A
J4
-6
V
FD
-16
V
FD
-17
*
*
J4-
2
J4-
4
J4-
6
TB1-
4A
TB1-
4A
J6-3
R1
120V+ 120V- 120V- 120V+ 120V- 120V+
FLO
W
SW
ITCH
TB1-
35C
TB1-
33C
STACK
J9-
4
J9-
5
J9-
6
3
2 4
1
BOI
LER
P
UM
P
SYSTEM P
UM
P
DHW PU
MP
TB1-
4A
NOT
E:
WHEN AN OPT
IONAL
COMPONENT
IS NOT
PRESENT
,
1. THE SIG
NAL M
UST BE JUM
PED
= USED O
N
SIZE 4.0 M
M
Bh O
N
LY
2.
J5-
6
J1
0-
7
J9
-1
J9
-2
DI
SPLAY
#5
J1
0-
4
2
E2
360
4
D C B
A B
C D
1
2
3
4
43
2
11
0V
1
/8"
1
BY
LA
A
RS H
EA
TIN
G SYSTE
M
S.
FMA
56A
DWG
NO.
E236
04
SH
1
RE
V
-
AL 2-5-1
4
RE
V
IS
IO
N
S
REV
.
CH
A
N
GE:
A PPR
ENGR
A
PPR
ECN
DRAFT
CH
ECK
REL
EA
SE
-
14-002N
-1
3
JM 2-5-1
4
S
C
A
LE: NO
NE
INT
ENDED S
IZE
:
SOFTW
A
RE
D W
G
. N
O
:
C
SH
EET
1
OF 1
REV
.
A
PPROV
A
LS
DR
AF
T
ENG
R
A PP
R
UN
LESS OT
HE
RWI
SE SP
ECI
FIE
D:
PU
RPOS
E EX
CEPT
A
S S
PECIFICA
LLY
A
UT
HORIZ
ED IN WRIT
ING
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
.
TO
LE
RA
NCE
S
A
RE
:
MA
TERIA
L:
FIN
IS H
NA NA
JM
2-5-1
4
S
AL
2-5-1
4
DO
NO
T S
C
A
LE DRA
W
ING.
TH
IRD A
N
GL
E PROJECT
ION.
.1
DECI
MA
LS .X
.0
3
D
ECI
M
A
LS
.X
X
.0
10
REP
RO
D
UCED
, T
RA
N
SF
ERRED
T
O
O
THER D
O
CUM
ENT
S,
US
ED
O
R
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
D
EC
IM
A
LS
.XXX
TITL
E:
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 21. 110 Volt Single Phase Ladder Diagram