Part Number 550

SCHEMATIC WIRING DIAGRAM

-110-677/0299

EQUIPMENT

GROUND (NOTE 7)

 

 

(NOTE 6)

 

 

 

 

 

MANUAL

 

MANUAL

HIGH

RESET

 

RESET

LIMIT

HIGH LIMIT

PROBE LWCO

 

 

BK

 

 

BK

 

BK

IMPULSE

RELAY

R

R

Y

MOMENTARY

SWITCH

R R

R

W

G

GR

R

D+

D

TH TR W

ROBERTSHAW GAS VALVE

W

BK

PILOT

SOLENOID

VALVE

BK W R

UNIVERSAL SPARK

IGNITION CONTROL

MV

MV/PV

PV

R

ALARM

R

BK

 

THERMOSTAT

 

 

OR EMCS

 

 

 

 

 

BK BK

(NOTE 5)

G

 

 

 

R Y

Y

ALARM

24V

G

 

SERVICE

Y

W

 

 

SWITCH

 

 

G

G

 

(BY OTHERS)

 

G

G

 

 

 

 

H

 

C

R

 

 

BK

BK

 

BK

 

 

 

 

TRANSFORMER

 

 

 

120/24 V.A.C.

N

 

 

 

G

 

 

 

 

 

 

W

 

PLUG-IN

 

 

Y

 

 

 

 

 

DPST

W

Y

 

 

RELAY

CIRCULATOR

JUNCTION BOX

CABLE

(NOTE 9)

 

 

 

 

TO

 

 

 

 

 

 

WIRE NUTS (3)

DAMPER

G

R

1 2 A 1

Y

 

DAMPER

CONNECTOR

R

TERMINAL

BLOCK

A2

NOTE 10

PRE-WIRED PANEL

24V (GND)

SENSE

SPARK

W O

PILOT

(NOTE 8)

EGH-105 to EGH-125 Control Supplement

CSD-1 control system — Natural gas

11

Page 11
Image 11
Weil-McLain EGH-125, EGH-105 manual Schematic Wiring Diagram