18

Part Number 550-110-677/0299

VI Wiring — steam

 

 

LADDER WIRING DIAGRAM

EQUIPMENT

 

 

SERVICE

 

120 V.A.C.

 

 

(NOTE 7)

pumped return

 

 

 

 

 

GROUND

 

SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 9

 

 

R

 

 

 

 

C

 

 

 

 

TRANSFORMER

 

 

 

 

 

 

THERMOSTAT

 

RELAY COIL

 

Water boiler wiring —

 

 

 

1K

 

 

 

 

 

 

 

 

 

 

 

 

G

 

 

 

ladder and schematic diagrams

 

 

 

 

OPERATING CONTROL

 

N H C W B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FLOAT LWCO

MANUAL RESET

 

 

 

 

 

MANUAL RESET

& PUMP

 

 

 

1K1

 

PROBE LWCO

 

 

 

PRESSURETROL PRESSURETROL

CONTROL

 

 

 

Y

 

 

 

 

(NOTE 11)

 

 

 

 

 

 

 

 

 

 

 

CABLE

 

 

 

 

 

 

 

 

TO

 

FUSE

 

 

 

 

 

 

DAMPER

 

 

 

 

 

 

 

3

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

5

 

 

 

 

 

 

 

4

4

 

 

 

 

 

 

 

2

2

 

 

 

 

 

 

 

6

6

 

 

 

 

 

 

 

1

1

 

 

 

 

 

 

 

 

2K

 

 

ELECTRICAL SHOCK HAZARD, CAN CAUSE SEVERE

 

 

 

 

SEE NOTE 10

 

 

 

 

 

 

 

 

 

 

INJURY OR DEATH. DISCONNECT POWER

 

 

 

 

2K4

 

 

 

BEFORE INSTALLING AND/OR SERVICING.

 

 

 

 

A1

A2

 

 

 

 

 

 

 

 

 

NOTES:

 

 

 

 

 

N/A

R

 

1. ALL WIRING MUST BE INSTALLED IN ACCORDANCE WITH:

 

 

 

 

 

 

 

 

 

 

2K3

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CODE REQUIREMENTS.

 

 

 

 

2K2

 

 

 

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

 

 

 

 

 

 

 

NATIONAL, PROVINCIAL OR LOCAL CODE REQUIREMENTS.

 

 

 

 

1

 

 

 

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

 

 

 

 

 

 

 

 

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

 

 

 

 

2K1

 

PILOT

 

 

 

 

 

 

 

 

o

 

 

 

 

 

 

 

TYPE 150 C OR IT’S EQUIVALENT MUST BE USED.

 

 

 

 

 

 

SOLENOID

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

VALVE

 

 

 

 

 

 

 

 

 

INFORMATION.

 

 

 

 

 

 

 

 

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

LOW VOLTAGE FIELD

 

 

 

 

 

FOR MULTIPLE ZONE SYSTEMS USING ZONE VALVES OR CIRCULATORS, REFER

 

 

 

TH

 

HIGH VOLTAGE FIELD

 

MV

 

 

TO COMPONENT MANUFACTURER’S INSTRUCTIONS FOR APPLICATION WIRING AND

 

 

 

 

 

 

 

 

 

THERMOSTAT ANTICIPATOR SETTING.

 

LOW VOLTAGE FACTORY

 

MV/PV

 

TR

 

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

 

 

 

 

 

 

 

 

 

 

 

 

INSTALLATION/OPERATING MANUAL.

 

HIGH VOLTAGE FACTORY

 

PV

 

D

 

 

 

 

 

 

 

 

 

 

IGNITION CABLE

 

 

 

 

6. L.W.C.O., PRESSURE CONTROLS, WIRED IN SERIES.

 

 

ALARM

 

 

 

 

 

 

 

D

 

 

 

 

 

 

ALARM

 

 

 

 

 

 

 

 

7. DENOTES FIELD INSTALLED CHASSIS GROUND.

 

 

 

 

24V

ROBERTSHAW

 

 

 

 

IGNITION CONTROL MODULE TERMINAL.

 

GAS VALVE

 

 

 

 

 

 

 

 

8. PILOT LEADWIRES ARE NOT FIELD REPLACEABLE. REPLACE

 

 

 

 

24V (G)

 

2

 

PILOT ASSEMBLY IF NECESSARY.

 

 

IGNITION CONTROL PANEL TERMINAL.

 

SENSE

 

 

 

 

 

 

 

 

 

 

 

9. OPERATING CONTROL REQUIRED WITH TANKLESS HEATER.

 

 

TRANSFORMER TERMINAL.

 

SPARK

 

SENSOR

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11. REMOVE JUMPER BAR BETWEEN TERMINAL "H" AND TERMINAL "C".

550-225-028/0399

R

IGNITION CONTROL PANEL LAMP

 

 

 

IGNITOR

 

 

 

 

 

 

Page 18
Image 18
Weil-McLain EGH-105, EGH-125 manual Pumped return