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XII. Electrical (continued)
24V Fuse, F3
Size 400: 1.6A Slow Blow
Size 500-1000: 2.4A fast acting
Enable/
Disable
DHW
Demand
Burner
Gas Pressure Switches
Thermal Fuse
Low
3
(with manual reset)
(COM)
(NO)
Air Proving
Switch
NO
C
P8-5
Auto
Auto
On/Off
Reset Ext
Reset Ext
LWCO
Switch
Limit
Limit
P1
1
2
P2
P12-3
Lockout
Alarm
EnviraCOM
Outdoor
Sensor
Header/
Tank
Sensor
Remote
4-20mA
DHW
Sensor
AMP 400-1000L I&O Manual
P3-12
P8-8
Enable/Disable
Enable/
P8-12
Disable
DWH Demand
DHW
P8-6
Demand
Optional Manual
Reset Ext. Limit
OR
High
Manual
Manual
Reset Ext
Reset Ext
2
3
1
Limit
(COM)
(NC)
P8-13
Honeywell L4006E
Hi Limit
OR
Jumper (Std)
Flow
Switch
C
NO
P12-4
P11-2
P11-1
P8-7
Blocked
Condensate
Vent
Switch
P8-15
P8-14
D
P10-3
R
P10-1
C
P10-2
1
RJ45
(ECOM)
Inlet/
2
Return
Sensor
Outlet/
2
Supply
Sensor
Flue Gas
2
Sensor
P8-11
P8-3
P8-9
P8-1
P8-2
P8-10
Wire Diagram (continued)
1
2
LWCO
L2-1
L2-3
24V Transformer
24V Transformer
L3-1
L3-2
Control
J8-3
J8-2
(R7910)
J4-10
J7-7
E-1
J4-12
Spark
J1-2
J5-1
J5-2
Limit
ILK
P8-16
J6-2
ANNUNCIATOR 1
J8-1
J2-1
J2-2
J2-3
J6-1
J2-4
ANNUNCIATOR 2
Float
Switch
J6-3
LCI
J6-7
J6-8
J3-1
J3-7
(A)
(D)
J3-2
J3-8
(B)
(R)
Modbus
J3-3
J3-9
1
(+5V)
(C)
J3-4
(A)
J3-5
(B)
Modbus
J3-6
2
(C)
J8-4
1
J8-5
J8-8
1
J8-9
J8-10
3
J9-4
1
J9-5
J9-6
3
J10-7
J10-8
J8-11
J8-6
J9-1
J9-2
P3-2
Control Panel
Ground Screw
Igniter
Flame
Sensor
Gas Valve
1 (DC+)
2 (Tach.)
Combustion
3 (N/C)
Fan
(DC Conn.)
4 (PWM)
5 (DC-)
+V
+24 VDC
24VDC
Delta
-V
-24 VDC
Display
DOP
Display
Power Supply
G
G
COM-1 (A)
COM-4 (A)
P10-9
COM-6 (B)
COM-9 (B)
P10-5
COM-5 (C)
Host USB
P10-10
P10-6
P10-7
P10-8
RJ45
1
1
MODBUS
Communication
Peer-to-Peer and EMS
A
MODBUS
Communication
B
EMS
C
A
MODBUS
Communication
B
Peer-to-Peer
C
RJ45
MODBUS
Communication
Peer-to-Peer and EMS
53
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