Weil-McLain EGH-105, EGH-125 Wiring - water boilers, Ladder Wiring Diagram, Water boiler wiring

Models: EGH-125 EGH-105

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Wiring — water boilers

10

Part Number 550-110-677/0299

VI

Wiring — water boilers

 

 

LADDER WIRING DIAGRAM

EQUIPMENT

 

 

120 V.A.C.

 

(NOTE 7)

 

 

 

 

 

 

GROUND

 

 

 

 

SERVICE

 

 

 

CIRCULATOR

 

 

 

 

SWITCH

 

1K2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 5

 

 

 

 

 

 

 

 

 

 

 

R

 

 

 

C

Water boiler wiring

 

 

 

 

TRANSFORMER

 

 

 

THERMOSTAT

 

RELAY COIL

ladder and schematic diagrams

 

 

 

 

 

 

1K

 

 

 

 

 

G

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MANUAL

 

 

 

 

 

 

MANUAL

 

RESET

 

 

 

 

1K1

 

RESET

HIGH

PROBE LWCO

 

 

 

 

 

HIGH LIMIT

LIMIT

 

 

 

 

 

 

Y

 

 

 

 

 

 

 

CABLE

 

 

 

 

 

 

 

 

TO

 

FUSE

 

 

 

 

 

 

DAMPER

 

 

 

 

 

 

 

3

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

5

 

 

 

 

 

 

 

4

4

 

 

 

 

 

 

 

2

2

 

 

 

 

 

 

 

6

6

 

 

 

 

 

 

 

1

1

 

 

 

 

 

 

 

 

 

2K

 

 

ELECTRICAL SHOCK HAZARD, CAN CAUSE SEVERE

 

 

 

 

 

 

 

 

INJURY OR DEATH. DISCONNECT POWER

 

 

 

 

 

 

 

 

BEFORE INSTALLING AND/OR SERVICING.

 

 

 

 

SEE NOTE 10

 

 

 

 

 

 

 

 

NOTES:

 

 

 

 

 

2K4

 

 

 

 

 

A1

A2

 

1. ALL WIRING MUST BE INSTALLED IN ACCORDANCE WITH:

 

 

 

 

 

 

 

 

 

 

 

 

 

A. U.S.A. - NATIONAL ELECTRICAL CODE AND ANY OTHER NATIONAL, STATE OR LOCAL

 

 

 

 

N/A

R

 

CODE REQUIREMENTS.

 

 

 

 

 

 

 

 

 

 

 

 

2K3

 

 

B. CANADA - C.S.A. C22.1 CANADIAN ELECTRICAL CODE PART 1 AND ANY OTHER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NATIONAL, PROVINCIAL OR LOCAL CODE REQUIREMENTS.

 

 

 

 

 

2K2

 

 

 

 

 

 

 

 

 

2. ALL CONTACTS SHOWN WITHOUT POWER APPLIED-OFF SHELF CONDITION.

 

 

 

 

1

 

 

 

 

 

 

 

 

 

3. IF ORIGINALWIRE AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED,

 

 

 

 

 

2K1

 

 

o

 

 

 

 

 

 

 

TYPE 105 C OR IT’S EQUIVALENT MUST BE USED.

 

 

 

 

 

 

PILOT

4. REFER TO CONTROL COMPONENT INSTRUCTIONS PACKED WITH BOILER FOR APPLICATION

 

 

 

 

 

SOLENOID

 

 

 

 

 

VALVE

 

INFORMATION.

 

LOW VOLTAGE FIELD

 

 

 

 

 

 

 

 

 

 

 

5. THERMOSTAT - FOR SINGLE ZONE SYSTEMS, THERMOSTAT ANTICIPATOR SETTING IS 0.40 AMPS.

HIGH VOLTAGE FIELD

 

 

 

 

 

FOR MULTIPLE ZONE SYSTEMS USING ZONE VALVES OR CIRCULATORS, REFER

 

 

 

 

 

LOW VOLTAGE FACTORY

 

MV

 

TH

 

TO COMPONENT MANUFACTURER’S INSTRUCTIONS FOR APPLICATION WIRING AND

 

 

 

 

 

 

 

 

 

 

 

 

THERMOSTAT ANTICIPATOR SETTING.

 

HIGH VOLTAGE FACTORY

 

MV/PV

 

TR

 

EMCS - FOR EMCS CONNECTION IN PLACE OF THERMOSTAT, REFER TO EMCS

 

 

 

 

 

 

 

 

 

 

INSTALLATION/OPERATING MANUAL.

 

IGNITION CABLE

 

PV

 

D+

 

 

 

 

 

 

 

 

6. L.W.C.O., HIGH LIMITS, WIRED IN SERIES.

 

 

 

 

 

ALARM

D

 

 

 

 

 

 

 

ALARM

 

 

 

 

 

 

 

 

7.

DENOTES FIELD INSTALLED CHASSIS GROUND.

 

 

IGNITION CONTROL MODULE TERMINAL.

 

 

24V

ROBERTSHAW

 

 

 

 

 

GAS VALVE

 

 

 

 

 

 

 

 

 

 

IGNITION CONTROL PANEL TERMINAL

 

24V (G)

2

8. PILOT LEADWIRES ARE NOT FIELD REPLACEABLE. REPLACE

 

 

 

 

 

 

 

 

 

 

SENSE

 

 

 

PILOT ASSEMBLY IF NECESSARY.

 

 

 

 

 

 

 

 

 

TRANSFORMER TERMINAL.

 

 

 

SENSOR

 

 

 

 

 

SPARK

 

9. CIRCULATOR NOT USED WITH GRAVITY HOT WATER.

 

 

 

 

 

 

 

 

 

 

 

 

 

10. ALARM CONTACT RATINGS: 15 AMP @ 250 VAC.

550-225-026/0199

R

IGNITION CONTROL PANEL LAMP

 

 

 

IGNITOR

 

 

 

 

 

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Weil-McLain EGH-105 Wiring - water boilers, Ladder Wiring Diagram, Water boiler wiring, ladder and schematic diagrams