Magnatherm boilers and water heaters, Page 33 page 2 of 2 – LAARS MagnaTherm MGV - Installation, Operation and Maintenance Instructions User Manual
Page 37
MagnaTherm Boilers and Water Heaters
Page 33
Page 2 of 2
24V +
24V +
24V NEUTRAL
24V NEUTRAL
120V (N)
120V +
BOILER PUMP
SYSTEM PUMP
120V +
A
120V (N)
TT
TT
ALARM
ALARM
DHW SENSOR
REMOTE RESET
4-20mA (-)
0-110VDC (-)
0-10VDC (+)
OUTDOOR/
SYSTEM
ANALOG (-)
ANALOG (+)
0-10V
PUMP
OUTDOOR/
SYSTEM
TOD
DHW SENSOR
COM2-A
COM2-B
COM2-C
MB2-A
MB2-B
MB2-C
REMOTE/TOD
COMMON
4-20ma (+)
24V NEUTRAL
GROUND
24V +
SYSTEM PUMP
DHW PUMP
DHW PUMP
TB1
120V (N)
BOILER PUMP
COM 1 COM2
Y
BL
1 2 3 4 5 6 7 8
TB
1-1
0C
2
4V
(-
)
TB
1-1
4C
2
4V
(+
)
TB
1-3
3C TB1
-3
4C
TB
1-3
5C
DISPLAY
CONN-
ECTOR
"D"
7
6
5
4
3
2
POWER
MB1 MB2 ECOM
RESET
ALARM
FLAME
J11
J10
J9
J8
J2
J1
J7
J6
J5
J4
A B C A B C 1 2 3
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
1
2
3
4
5
6
7
1
2
3
4
5
6
7
8
9
10
11
12
8
7
6
5
4
3
2
1
7
6
5
4
3
2
1
7
6
5
4
3
2
1
12
11
10
9
8
1
6
5
CR1
4
3
2
8
7
1
6
5
CR2
4
3
2
8
7
1
4 3 2
1
2
3
VTB3
1
4
VTB6
1
2
3
(+)
(-)
1 2
4 3
2 1
VTB4
VTB5
VTB2
4 3
2
0-10 V(-)
4-20ma(-)
4-20ma(+)
0-10 V(+)
ENCLOSURE
(OPTIONAL)
N/O
N/C
COM
P/N LAARS-1
DIGITIZED
VARIPRIME
24VAC POWER
VTB1
1
2
1
2
1
8
C
NO
NC
9
1 5
12
13
4
14
2
1
2
4
1
3
2
4
3
STACK TEMP
OUTLET WATER TEMP
INLET WATER TEMP
8 POS CONN "C"
6
8
7
2
5
4
3
1
1
WIRE VOLTAGE KEY
24V=
120V=
BL
BK
W
LOW GAS
J10-5
J10-6
J10-4
J10-2
J10-3
J10-1
J3-MB2C
J3-MB2B
J3-MB2A
DISPLAY #6
DISPLAY #5
DISPLAY #4
W/R
W/G
W/R
BL
BL/W
GND
BL
BK
W/V
BK/R
MAIN PWR
SWITCH
GROUND
24V
+
24V
-
120V
NE
UT
12
0V
L
OA
D
120V
LINE
OUTLET TEMP
INLET TEMP
BR/V
BR/G
BL/Y
BR/R
DRAIN WIRE
FROM
SHIELDED
CABLE
CONDENSATE
17 16
2
5
VFD
*
*
G
Y/B
L
G
Y/R
*
BL
BL
W
W
BK
BL
BL
V
V
R
R
BL
BL Y
Y
Y
= USED ON SIZE 4.0 KBTU ONLY
BK/OR
W
BK
3
1 2
4 5 6
5
BK/W
G
TOD
1
2
8
3
FROM LWCO
"PROBE" TO PROBE
TO LWCO PROBE AT HX
BL
Y
BL
V/W
V
OR
OR/W
W/BK
W/V
W/BK
BR/Y
BR/Y
Y
BL
OR
OR/W
BR/Y
BL/W
BR
BL
BK
W
G
W
BK
BK
BK/R
BK/Y
BK/Y
G
BK
W/V
W/R
BR
W/R
W/R
GY/BL
BR/R
BR/Y
GY/V
BL
W/R
W/R
W
Y
4
DISPLAY #7
DISPLAY #8
LWCO #2 120V (N)
GY/BK
R
GY/R
P1 P2
ADDITIONAL
HIGH LIMIT
BLOCKED FLUE &
BLOCKED INTAKE
THERMAL
CUTOUT
FLOW SWITCH
HIGH GAS
MANUAL RESET
HIGH LIMIT
TO TB1-4C (120V N)
TO B4 (PROBE)
2
1
9
2
10
3
11
4
12
5
13
6
14
7
15
HSI
PILOT
VALVE
MAIN
VALVE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
7
9
10
LWCO
FLAME ROD
BK
G
W/G
W/R
W
W
12 POS CONN "B"
16 POS CONN "A"
PROBE
B C
BK/OR
Y
BR/R
Y/R
BR/G
W/G
Y/G
6 POS CONN "E"
2
1
3
4
8
R/BN
R/BK
R/BR
V
V/W
V/BK
TB1-39C
TB1-40C
TB1-42C
TB1-43C
TB1-45C
TB1-44C
J3
Y
W
Y
W
BR
BK
BR/R
BK
BR/G
BK/O
BR/V
BK/V
BL/W
W/R
BL
TB1-36C
TB1-37C
TB1-38C
BL
NOTE:
DASHED LINES DENOTE VARIPRIME PUMP
1.
CONTROLS. VARIPRIME INSTALLED ON
HYDRONIC UNITS ONLY.
2.
S
H
REV.
SHEET 1 OF 1
D
B
SOFTWARE
INTENDED SIZE:
D
C
B
A
B
C
D
1
2
3
4
5
6
7
8
ENGR
APPR
UNLESS OTHERWISE SPECIFIED:
E23512
DECIMALS .X
7
6
5
4
3
DIMENSIONS ARE IN INCHES.
1
2
BY LAARS HEATING SYSTEMS CO.
8
DRAFT
D
W
G
N
O
.
R
E
V
E
23
51
2
1
AL 2-11-14
REVISIONS
APPROVALS
REV.
CHANGE:
APPR
ENGR APPR
DWG. NO:
DRAFT
4/19/13
TITLE:
PURPOSE EXCEPT AS SPECIFICALLY AUTHORIZED IN WRITING
1/8"
TOLERANCES ARE:
N/A
CHECK
S
14-002N-13
ECN
DECIMALS .XX
INCREASE LINE WEIGHT FOR HIGH VOLTAGE TRACES
N/A
1
B
JM 2-11-14
B
FINISH
DIAGRAM, WIRING/BLOCK, MGT
FRACTIONS
DECIMALS .XXX
.1
AL 5/17/13
PROPRIETARY TO LAARS HEATING SYSTEMS CO. AND SHALL NOT BE
MATERIAL:
.010
REPRODUCED, TRANSFERRED TO OTHER DOCUMENTS, USED OR
DISCLOSED TO OTHERS FOR MANUFACTURING OR ANY OTHER
.03
THIS DOCUMENT AND THE INFORMATION CONTAINED HEREIN ARE
ANGLES
DO NOT SCALE DRAWING.
THIRD ANGLE PROJECTION.
SCALE: NONE
WIRE COLOR LEGEND
BK
BLACK
BL
BLUE
BR
BROWN
G
GREEN
GY
GRAY
OR
ORANGE
R
RED
V
VIOLET
W
WHITE
Y
YELLOW