Table of Contents
Advertisement
Brute
B
TM
RUTE. BOILERS AND VOLUME WATER HEATERS, 1,000 & 1,200 MBTU/h
7.6
Ladder and Wiring Diagrams
See Figure 20 and Figure 21.
THIS DOCUMENT AND THE INFORMATION CONTAINED HEREIN ARE
PROPRIETARY TO LAARS HEATING SYSTEMS AND SHALL NOT BE
REPRODUCED, TRANSFERRED TO OTHER DOCUMENTS, USED OR
DISCLOSED TO OTHERS FOR MANUFACTURING OR ANY OTHER
PURPOSE EXCEPT AS SPECIFICALLY AUTHORIZED IN WRITING
BY LAARS HEATING SYSTEMS.
120 VAC
MAIN
POWER SWITCH
TB1
AMBER
J7-2 SEC.
J4 - 7
PRIM.
J7-2 PRIM.
PUMP POWER
ON
1,000 ONLY
J7-1 PRIM.
J4 - 7
SEC.
J7-1 SEC.
J5 - 7
PRIM.
J5 - 7
SEC.
2
J2 PRIM.
J6-1 PRIM.
TACH
1
P2
FAN POWER
2
PWM OUT
3
J6-1 SEC.
FAN GND
4
THERMAL CUT-OUT
PRIM.
SEC.
1
2
J7-6 PRIM.
BLOWER
1 prim. 2
J7-6 SEC.
FLOW SWITCH
TB3
24VAC
J6-3
PRIM.
VENTURI PRESSURE
SWITCHES PRIM.
J6-3
SEC.
VENTURI PRESSURE
SWITCHES SEC.
J8-3 PRIM.
FIELD
CONNECTIONS
J8-3 SEC.
1
A
Figure 21. Ladder Diagram
FMA56A
4
2
4
J8-2
PRIM.
TB-5
J8-2
SEC.
4
3
DRY CONTACTS TO
BOILER PUMP
1,700 ONLY
J4 - 6
PRIM.
BOILER PUMP
BOILER PUMP
R1
RELAY
6
2
J4 - 6
SEC
.
BOILER PUMP
J5-6
RELAY
PRIM.
J5-6
SEC.
OPTIONAL PUMPS (FIELD INSTALLED)
J4 PRIM
SYSTEM
LINE
PUMP
5
SYS PUMP
4
LINE
DHW
3
DHW PUMP
PUMP
2
TB-5
7
2
1
3
4
5
BLOWER
1 sec. 2
1
2
3
4
5
J2 SEC.
TACH
1
J7-5 PRIM.
FAN POWER
2
PWM OUT
3
FAN GND
J7-5 SEC.
4
120 VAC
OPTIONAL LOW GAS
4 A
PRESSURE SW
J7-4 PRIM.
24 VAC
CIRCUIT BREAKER
J7-4 SEC.
J3P
J3S
MB1
MB1
A
A
B
B
C
C
J5-1
PRIM.
MB2
MB2
8
A
A
7
B
B
6
C
C
5
4
ECOM
ECOM
J5-1
1
3
1
SEC.
2
2
2
1
3
3
DISPLAY
SOLA R1
SOLA R1
PRIM.
SEC.
GAS
J5-2
VALVE
PRIM.
PRIM.
GAS
J5-2
VALVE
SEC.
SEC.
UNLESS OTHERWISE SPECIFIED:
TOLERANCES ARE:
DECIMALS .X .1 FRACTIONS
DWG NO.
When servicing controls, label all wires prior to
disconnection. Wiring errors can cause improper
and dangerous operation. Verify proper operation
after servicing
J8-9
3
PRIM.
J9-5
PRIM.
J9-5
N
SEC.
A
J8-9
SEC.
TB2
J8-5
PRIM.
J4-10
PRIM.
A
J4-10
J8-5
SEC.
SEC.
PUMP POWER
ON
1,000 ONLY
SPARK
GEN.
1
PRIM.
SPARK
1
GEN.
SEC.
FLAPPER PRIM.
ANALOG
INPUT PRIM.
1
CONDENSATE
NEUTRAL
OPTIONAL
ANALOG
ADDITIONAL
NEUTRAL
HIGH LIMIT
INPUT SEC.
R1
NEUTRAL
OUTDOOR
8
TEMP.
SENSOR
DHW
TEMP. SENSOR
PRIM.
DHW
TEMP. SENSOR
SYSTEM
TB4
TEMP.
SENSOR
N
ALARM
5
INTERLOCKS
4
3
2
INTERLOCKS
1
TB10
12
11
10
9
8
7
NOTE:
6
5
WHEN AN OPTIONAL COMPONENT
4
IS NOT PRESENT, THE SIGNAL
3
MUST BE JUMPED
2
1
TB 9
A
DO NOT SCALE DRAWING.
THIRD ANGLE PROJECTION.
3
1/8"
1
E23460
SH
REVISIONS
REV.
ECN
DRAFT
A
AH 2/12/14
14-013
ADDED SECONDARY CONNECTORS TO THE STACK
CHANGE:
TEMP SENSOR. ZONE D-1
Caution
OUTLET WATER
TEMP. SENSOR
J8-8 PRIM.
1 3
2 4
J8-10 PRIM.
STACK
TEMP. SENSOR
J9-4 PRIM.
1 5
J9-6 PRIM.
2 6
3 7
J9-4 SEC.
4 8
J9-6 SEC.
OUTLET WATER
TEMP. SENSOR
J8-8 SEC.
1 3
2 4
J8-10 SEC.
J8-4 PRIM.
1
2
INLET WATER
TEMP. SENSOR
J8-4 SEC.
1
J8-1
2
PRIM.
J8-1
SEC.
2
{
J7-2 SEC.
FLAPPER SEC.
2
+
J7-2 PRIM.
J8-6 PRIM.
J7-1 PRIM.
-
2
{
J8-7 PRIM.
J7-1 SEC.
SWITCH
+
J6-2 PRIM.
J8-6 SEC.
-
{
J6-2 SEC.
J8-7 SEC.
2
LWCO
J8-12 SEC.
OPTIONAL
P1
J6-1 PRIM.
P2
{
J6-1 SEC.
J7-11 SEC.
THERMAL CUT-OUT
FIELD
PRIM.
SEC.
J9-1 PRIM.
CONNECTIONS
{
J9-2 PRIM.
J9-1 SEC.
{
SEC.
J9-2 SEC.
J8-11 PRIM.
J8-12 PRIM.
OPTIONAL
HIGH GAS
PRESSURE SW
J6-8 PRIM.
PRIM.
J6-3
PRIM.
J6-8 SEC.
VENTURI PRESSURE
SWITCHES PRIM.
OPTIONAL
J6-7 PRIM.
HIGH GAS
PRESSURE SW
SEC.
J6-3
J6-7 SEC.
SEC.
VENTURI PRESSURE
SWITCHES SEC.
T-T OR
J8-3 PRIM.
FIELD
T-T OR
CONNECTIONS
J8-3 SEC.
A
REV
Page 31
CHECK
ENGR APPR
APPR
BW
2
A
J8-2
PRIM.
J8-2
SEC.
J7-6 PRIM.
J7-6 SEC.
FLOW SWITCH
J7-5 PRIM.
J7-5 SEC.
OPTIONAL LOW GAS
PRESSURE SW
J7-4 PRIM.
J7-4 SEC.
J5-1
PRIM.
J5-1
SEC.
GAS
J5-2
VALVE
PRIM.
PRIM.
GAS
J5-2
VALVE
SEC.
SEC.
UNLESS OTHERWISE SPECIFIED:
TOLERANCES ARE:
DECIMALS .X .1
FRACTIONS
1/8"
DECIMALS .XX
.03
DECIMALS .XXX
.010
ANGLES
1
MATERIAL:
NA
FINISH
NA
2
D
D
P
P
S
S
P
S
C
IN
I
O
TEMP
TEMP
B
DO NOT SCALE DRAW
THIRD ANGLE PROJEC
DIMENSIONS ARE IN I
APPROV
DRAFT
JM 1-23
ENGR
AL 1-23
APPR
Advertisement
Table of Contents
Troubleshooting
