LAARS MagnaTherm MGV - Installation, Operation and Maintenance Instructions - Manual (Page 41)

MagnaTherm Boilers and Water Heaters Page 37
CONDENSATE
R1
4
78
COM
1
COM
2
12
3
6
5
DISPLAY
A
C
B
J3
M
B1
120
VAC
24
VAC
J5-1
INTERLOCK
T3
T2
T1
L3
L2
L1
V FD
BL
OWER
M
O
TO
R
1
(+)
(-)
2
2
43
1
2
43
1
2
43
1
VTB5
VTB4
VTB1
24
VA
C
PO
W
ER
VARIPRIME
CO
M
N/C N/O
(OPT
IONAL)
EN
CL
OS
UR
E
3 1 2
VTB2
VTB6 VTB3 4
HSI
R-4
PILOT
J1-3
FL
A
M
E
RO
D
R2
MAIN
CI
RCUI
T BREAKER
T1 L1
C
O
N
TA
C
TOR
L3
L2 T2
T3
R2
C
O
NVE
NI
ENC
E
RE
C
EP
TA
C
LE
FU
SE
FU
SE
MAIN
SWITCH
+ -
110
VAC
N
A
M
EPL
A
TE
VOLTA
GE
6
25
4
11
13A
13B
13C
14
30
16
17
BLOCK FLUE SWITCHES
VFD
TB 1-44
TB 1-45
1
25
*
4
OUTLET WATER IN
LE
T
WATER
J8-8 J8-9 J8-4 J8-10 J8-5
3
2
1
2
L3
G
N
D
BL
OCK
FL
UE
SW
IT
C
HE
S
LWCO
J7-2
HIGH GAS PRESSURE SW
_ _
+ +
FIELD
CONNECTION
3
PH
POWER
L2
L3
G
L1
J6
-2
J6
-1
OPT
IONAL
ADDITION
AL
HIGH
LIMIT
J7-5
THERM
A
L C
UT-O
UT
PROBE
LOW GA
S
PRESSURE SW
J7-3
INLET SENSOR
OUTLET SENSOR
R4
TB1-29 TB1-30
MANUAL
RESET
HI
G
H
LI
M
IT
CONDENSATE
R3
J7-4
J7-6
J5-3
J4
-1
0
J5-2
UNIT TEMPERATURE
SENSOR
S
J5-7
J4-8
P1
P2 2
J8
-2
J8
-3
J8-1
VARIPRIME PUMP CONTROL MOUNTED ON HY
D
RO
N
IC U
N
ITS
O
N
LY
VFD
TER
M
5
VFD
TER
M
2
120 NEUTRAL
(V
A
RI
PR
IM
E O
N
LY
)
VTB
3-4
VTB
3-3
MB2-
B
J1
0-1
-
J1
0-8
R3
VA RIP RIM E
ON LY
- + - + +
4-20
m
a
(+)
+ -
J1
0-5
0-10VDC
(+)
45 44 43
4-
20
ma
0-
110VDC
(-
)
J1
0-6
DISP
LA
Y #6
MB2-
A
MB2-
C
J1
0-3
{
PUMP 0-10V DHW SE N
SO
R
{
COM
2
MB2
REMOTE
RESET
{
30 29 31 32 33 34
DISPLAY
#4
35 36 37 38 39 40 42 41
TOD
FEED
J1
0-2 J6
-8
J6
-7
A
LA
RM
{
27 28 26 25
+
24 23 22 21
TB
1-4
A
20 19 18 17 15 16
FIELD CONNECTIONS
{
TT
{
ANALOG
{
OUTDOOR
SY
STEM
{
DHW PUMP
{
SY
STEM PUMP
BOILER PUMP
{
J8
-3
TB1-13 J8
-6
J8
-7 J8
-1
1
J8
-1
2
J4
-2
J4
-4
TB
1-4
A
TB
1-4
A
J4
-6
VFD-16
VFD-17
*
*
J4-2 J4-4 J4-6
TB1-4A TB1-4A
J6-3
R1
120V+ 120V- 120V- 120V+ 120V- 120V+
FLOW
SWITCH
TB1-35C TB1-34C TB1-33C
STACK
J9-4 J9-5 J9-6
3
2 4
1
BO
IL
ER
PUMP SYSTEM PUMP
DHW PUMP
TB1-4A
NOTE:
WHEN AN OPTIONAL COMPONENT IS NOT PRESENT,
1.
TH
E S
IG
N
A
L M
US
T B
E J
UM
PE
D
= US
ED ON
SI
ZE
4
.0
M
MB
h O
N
LY
2.
L1
L2
J5-6
J1
0-7
J9
-1
J9
-2
DISPLAY
#5
J1
0-4
1
.0
10
E2
35
18
D C B
A B
C D
1
2
3
4
43
DRAFT S
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
2
BY
LA
A
RS H
EA
TIN
G SYSTE
M
S.
REC
EPT
A
C
LE
&
FUS
E.
DWG
NO.
E2351
8
SH
FMA
56A
1
RE
V
AL 2-1
0-1
4
RE
V
IS
IO
N
S
REV
.
CH
A
N
GE:
A PPR
ENGR
A
PPR
ECN
PU
RPOS
E EX
CEPT
A
S S
PECIFICA
LLY
A
UT
HORIZ
ED IN WRIT
ING
B
LA
DDER
DI
A
G
RA
M,
MGT
, 3
PH
A
SE
1
/8"
14-002N
-1
3
JM 2-
10
-1
4
S
C
A
LE: NO
NE
INT
ENDED S
IZE
:
SOFTW
A RE
B
C
SH
EET
1
OF 1
REV
.
A
PPROV
A
LS
DR
AF
T
ENG
R
A PP
R
CH
ECK
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
.
TO
LE
RA
NCE
S
A
RE
:
DW
G
. NO
:
MA
TERIA
L:
FIN
IS H
NA NA
C
JT
1/
17
/14
JM
1/
17
/14
UN
LESS OT
HE
RWI
SE SP
ECI
FIE
D:
SH
OW R
2 COI
L ON
CON
TACT
OR
. AD
D
CON
V
EN
IE
N
CE
TH
IRD A
N
GL
E PROJECT
ION.
DO
NO
T S
C
A
LE DRA
W
ING.
.1
DECI
MA
LS .X
TITL
E:
D
ECI
M
A
LS
.X
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
B
8.7 Ladder Diagrams
Figure 19. Three-Phase Ladder Diagram