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XII. Electrical (continued)
Wiring Legend
Factory Wire Harness
PCB Trace/Components
Field Wiring
Connector
Screw
Terminal
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)
Air Proving
Switch
NO
C
P8-5
Auto
Auto
On/Off
Reset Ext
Reset Ext
LWCO
Switch
Limit
Limit
P1
P2
1
2
P12-3
Lockout
Alarm
52
EnviraCOM
120V
Line L
P3-9
P2-1
Pump Fuse, F1
(6.3A Slow Blow)
P3-12
Figure 24: AMP 400-1000L Wire Diagram
P8-8
Enable/Disable
Enable/
P8-12
Disable
DWH Demand
DHW
P8-6
Demand
Optional Manual
Reset Ext. Limit
OR
High
Manual
Reset Ext
2
3
1
Limit
(NO)
(COM)
(NC)
P8-13
Honeywell L4006E
Hi Limit
OR
Jumper (Std)
Flow
Switch
C
NO
P12-4
P11-2
P8-7
P11-1
Blocked
Vent
Switch
P8-15
P8-14
D
P10-3
R
P10-1
C
P10-2
1
120VAC/60Hz/1Ph
(Line Voltage)
Combustion
Fan
(120V Conn.)
1
(L)
B1-1
Internal, non replaceable
24VDC
L
Display Power Supply
(+)
Internal, non
replaceable
P3-14
J4-4
Control (R7910)
P3-13
J4-2
P3-15
J4-6
1
LWCO
L2-1
L2-3
24V Transformer
24V Transformer
L3-1
L3-2
Control
J8-3
(R7910)
J7-7
E-1
Spark
Manual
Reset Ext
J5-1
Limit
ILK
P8-16
J6-2
ANNUNCIATOR 1
J8-1
J6-1
ANNUNCIATOR 2
Condensate
Float
Switch
J6-3
LCI
J6-7
J6-8
J3-7
(D)
J3-8
(R)
Modbus
J3-9
1
(C)
3
(G)
B1-3
P3-6
B1-2
P3-3
2
(N)
N
(-)
P2-3
G
P2-2
Combustion Air Damper
(If using Room Air)
AND
P3-1
J4-5
Primary
Primary
Pump L
Pump N
Primary Pump
P3-4
J4-3
DHW
DHW
Pump L
Pump N
DHW Pump / Isolation Valve
P3-7
J4-7
System
System
Pump L
Pump N
System Pump
2
P3-2
Control Panel
Ground Screw
J8-2
J4-10
J4-12
J1-2
J5-2
Gas Valve
1 (DC+)
J2-1
2 (Tach.)
Combustion
J2-2
3 (N/C)
(DC Conn.)
J2-3
4 (PWM)
J2-4
5 (DC-)
+24 VDC
Delta
-24 VDC
DOP
Display
G
J3-1
(A)
COM-1 (A)
COM-4 (A)
J3-2
AMP 400-1000L I&O Manual
(B)
COM-6 (B)
COM-9 (B)
J3-3
(+5V)
COM-5 (C)
Host USB
J3-4
(A)
120V
Line N
G
Ground to
control box
via mounting
screws
Igniter
Flame
Sensor
Fan
+V
24VDC
-V
Display
Power Supply
G
A
MODBUS
P10-9
Communication
B
P10-5
EMS
C
P10-10
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