Sussman ES - Power Circuit Wiring Diagrams; ES Manual Reset LWCO Wiring

Sussman Boilers
Installation, Operation & Maintenance Manual
Wiring Diagram Control Circuit
RELAY
FIELD WIRING
FACTORY WIRING
PILOT
LIGHT
L
OPERATING
PRESSURE
CONTROL
AUX LWCO
PC BOARD
MANUAL RESET
PILOT
LIGHT
L1
G
NC
COM
NO
L2
HIGH LIMIT
PRESSURE
CONTROL
LIQUID
LEVEL
CONTROL
ON-OFF
SWITCH
CONTROL
TERMINAL
BLOCK
120V 1PH
INPUT
L
N
TO
PROBE
SOLENOID VALVE
CONTACTORS
PUMP MOTOR
P2
P1
R
C1
C2
S
M
GND
LOW
RESET
ES Electric Boilers with Manual Reset Auxiliary Low Water Cutoff
H1 H3 H5 H7
FB1 FB2 FB3 FB4
FIELD WIRING
FACTORY WIRING
PILOT
LIGHT
480V
120V
NOTES:
1. Power Terminal Block only on boilers with two or more contactors
2. Power Fuses only on boilers rated 20 amperes and larger.
3. See Parts List for contactor and heating element information.
H2 H4 H6 H8
TO CONTROL
CIRCUIT
HEATING
ELEMENTS
TRANSFORMER
(optional)
TB 1
TB
FB
C
H
L1
L2
L3
G
POWER FUSES
(see Note 2)
CONTACTORS C1 C2 C3 C4
SINGLE PHASE
MAIN POWER SUPPLY
L1 L2 G
T1
TERMINAL POWER BLOCK
(see note 1)
THREE PHASE
MAIN POWER
SUPPLY
ES and SSB Electric Boilers (Power Circuit)
5